Service Manual
TAS 455 & TAS 465
Analog Oscilloscopes
B020099 and Below
070-8524-02
Warning
The servicing instructions are for use by
qualified personnel only. To avoid personal
injury, do not perform any servicing unless you
are qualified to do so. Refer to the Safety
Summary prior to performing service.
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:
WARRANTY
!
" " " ! ! " " ! ! "
" ! ! " " ! " ! " " " " " " ! " "
! " THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR OR
REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR
BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
Table of Contents
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vii
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xi
Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xiii
Symbols and Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specific Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xiii
xiv
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xvii
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
xviii
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1Ć1
User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vertical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurement Cursors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1Ć2
1Ć3
1Ć3
1Ć3
1Ć3
Nominal Traits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1Ć5
Warranted Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1Ć9
Performance Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1Ć9
Typical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1Ć17
Installation and Power On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Ć1
Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Ć3
Selecting and Deselecting Input Channels . . . . . . . . . . . . . . . . .
Using the Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting a Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using AUTOSET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compensating the Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Ć3
2Ć3
2Ć4
2Ć4
2Ć5
2Ć8
Specifications
Operation
TAS 455 and TAS 465 Service Manual
Table of Contents
Theory of Operation
Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3Ć1
Logic Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..!(/.),- ,)! ) %(# (.!,"! (&)# +/%-%.%)( 3,% 2.!,(& ,%##!, Processor System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
,)!--), /-3-.!' /-3-.!' ! )/. /-3-.!' ,)(.5(!& (.!,"! /-3-.!' (&)# ), (.!,"! /-3-.!' Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
!,.%& /.*/. ),%4)(.& /.*/. %#$ )&.#! Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
!(/ 1%.$!- ).- ( ,)!- - ( ,%0!, 1%.$!- Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3Ć1
3Ć1
3Ć4
5
5
5
5
3Ć4
5
5
5
5
5
3Ć6
5
5
5
3Ć6
5
5
5
5
5
3Ć8
3Ć8
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć1
Using the Brief Performance Checks Procedures . . . . . . . . . . .
Using the Performance Tests Procedures . . . . . . . . . . . . . . . . . .
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć1
4Ć1
4Ć2
Brief Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć3
PowerĆOn Self Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
/(.%)(& !-.- ,!,!+/%-%.!- !,%"3 .$! ,)! )'*!(-.), /.*/. !,%"3 .$! (*/. $((!&- !,%"3 .$! &.$)* (
/(.%)(- !,%"3 .$! %'! -! !,%"3 .$! ,%##!, 3-.!' !,%"3 .$! 2.!,(& ,%##!, 4Ć3
4Ć3
5
5
5
5
5
5
5
Performance Verification
Contents
Table of Contents
Temperature Compensation Calibrations . . . . . . . . . . . . . . . . . .
Horizontal Sweep Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vertical Signal Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć9
4Ć9
4Ć11
Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć13
Performance Tests Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vertical System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check DC Gain and Voltage Measurement Accuracy . . . . . .
Check Trigger Level Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . .
Check DC Coupling Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . .
Check XĆAxis Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horizontal System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Time Base and Time Cursor Accuracy . . . . . . . . . . . . .
Check Dual Delay Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Trigger Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Video Trigger Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4Ć13
4Ć13
4Ć15
4Ć15
4Ć16
4Ć17
4Ć19
4Ć19
4Ć19
4Ć22
4Ć24
4Ć24
4Ć28
Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5Ć1
Requirements for Performance . . . . . . . . . . . . . . . . . . . . . . . . . . .
Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Access to Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WarmĆUp Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performing the Adjustment Procedures . . . . . . . . . . . . . . . . . . . .
Complete Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Partial Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Dependencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Adjustment
(New Style Power Supply) . . . . . . . . . . . . . . . . . . . . . . . . . .
CRT Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Frequency Output Compensation . . . . . . . . . . . . . . . . . . .
Factory Horizontal Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Factory Vertical Cal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Frequency Step Response . . . . . . . . . . . . . . . . . . . . . . . . .
Attenuator Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vertical Gain Adjust (Cabinet On) . . . . . . . . . . . . . . . . . . . . . . . .
5Ć1
5Ć1
5Ć1
5Ć1
5Ć2
5Ć2
5Ć3
5Ć3
5Ć3
5Ć4
Adjustment
TAS 455 and TAS 465 Service Manual
5Ć4
5Ć4
5Ć6
5Ć7
5Ć11
5Ć14
5Ć16
5Ć17
Table of Contents
Maintenance
iv
Maintenance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6Ć1
Before Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tektronix Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
,,).3 ",0& " "+&, *, '&,.&*) ",0& " Self Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventing ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6Ć1
6Ć1
4
4
6Ć2
6Ć2
Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6Ć5
General Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Cleaning Procedures . . . . . . . . . . . . . . . . . . . . . .
)-+" .&*) 5 2.",&*, '")&)$ ,* "!/," 5 2.",&*, '")&)$ ,* "!/," 5 ).",&*, '")&)$ .%" (+'*-&*) %&"'! 6Ć5
6Ć5
4
4
4
4
Removal and Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . .
6Ć9
Preparation Ċ Please Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
'" "(*0' ")",' )-.,/ .&*)- /((,3 *# ,* "!/,"- Line Cord and Line Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
&)" *,! &)" /-" FrontĆPanel Knobs and Shafts . . . . . . . . . . . . . . . . . . . . . . . . . . . .
"(*0&)$ ,*).4)"' )*- )! %#.- )-.''&)$ ,*).4)"' )*- )! %#.- Feet, Rear Cover, and Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . .
", *0", &)". "+' &)$ .%" ,*). "". FrontĆPanel Trim, Menu and Power Buttons . . . . . . . . . . . . . . . .
"(*0&)$ .%" ,*). ,&( ")/ /..*)- )! '-.*(", *1", /..*) "+' "("). )-.''&)$ .%" ,*). ,&( A62 Front Panel Module Removal . . . . . . . . . . . . . . . . . . . . . . . . .
,*).4)"' *!/'" &---"('3--"('3 Menu Flex Circuit Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . .
A1 Analog Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Driver Board (A3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRT Implosion Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan and Fan Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
) )! ) */). "(*0' ) )! ) */). )-.''.&*) 6Ć9
4
4
4
6Ć14
4
4
6Ć15
4
4
6Ć17
4
4
4
6Ć18
4
4
4
4
6Ć20
4
6Ć23
6Ć24
6Ć26
6Ć27
6Ć29
4
4
Contents
Table of Contents
CRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
#%+" $()"") %$ CRT Light Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRT Front Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A2 Display Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A63 Power Supply Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
%,' *&&"- #%+" %,' *&&"- $()"") %$ 6Ć31
.
.
6Ć34
6Ć35
6Ć36
6Ć37
.
.
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6Ć41
Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symptom Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6Ć41
6Ć41
6Ć42
Repackaging Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6Ć51
&) %$( $)'$) %$" %,' %'( ''$)-."*( '+ &) %$( &) %$ !#%*$) &) %$ '%$) %+' $ %* &) %$ ) %$" '%( &) %$ ') ) % " ') %$ $ () ) &%') .
.
.
.
.
.
Options
Replaceable Electrical Parts List
Diagrams
Diagrams and Circuit Board Illustrations . . . . . . . . . . . . . . . . . . . . . .
9Ć1
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graphic Items and Special Symbols Used in This Manual . . .
Component Locator Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9Ć1
9Ć1
9Ć1
9Ć2
Replaceable Mechanical Parts List
TAS 455 and TAS 465 Service Manual
v
vi
List of Figures
+)74' >='#4 #0'. +)74' >=75' 1/2#46/'06 +)74' >=! 76610 +)74' > =41$' 1/2'05#6+10 +)0#. +52.#;'& #(6'4 +)74' > =100'%6+105 (14 1/2'05#6+0) # 41$' +)74' > =19 41$' 1/2'05#6+10 (('%65 +)0#.5 +)74' > =1%#6+10 1( 41$' '#& &,756/'06 +)74' > ='07 #2 >
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>=4#6+%7.' '('4'0%'5 >='56 11-72 (14 70%6+10#. '565 >=14+<106#. &,756/'065 0' > =14+<106#. &,756/'065 91 > =14+<106#. &,756/'065 *4'' > =#+0 #0& 1.6#)' '56 '672 > =4+))'4 '8'. '56 '672 > =#0&9+&6* '56 '672 >=">:+5 #+0 '56 '672 >=+/+0) '56 '672 >=7#. '.#; '56 '672 >=4+))'4 '05+6+8+6; '56 '672 0' >=4+))'4 '05+6+8+6; '56 '672 91 > =4+))'4 '05+6+8+6; '56 '672 *4'' > =4+))'4 '05+6+8+6; '56 '672 174 > = +&'1 4+))'4 '56 '672 >
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+)74' >=1%#6+10 1( 1#4&5 (14 &,756/'065 +)74' >= &,756/'065 #.+$4#6+10 '672 +)74' >=19 4'37'0%; 76276 1/2'05#6+10 #.+$4#6+10
'672 +)74' > =14+<106#. &,756/'065 0' +)74' > =14+<106#. &,756/'065 91 +)74' > =14+<106#. &,756/'065 *4'' +)74' > =14+<106#. 76276 #.+$4#6+10 '672 +)74' > =#%614; '46+%#. #.+$4#6+10 '672 +)74' >=:6'40#. 4+))'4 #.+$4#6+10 '672 +)74' >= '46+%#. &,756/'065 +)74' >=&,756+0) '46+%#. #+0 #0& '06'4+0) >
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TAS 455 and TAS 465 Service Manual
>
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vii
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Safety Summary
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Safety
Safety Summary
Do Not Remove Covers or Panels
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Preface
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Product Description
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Specifications
Product Description
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TAS 455 and TAS 465 Service Manual
1Ć3
1Ć4
Nominal Traits
This subsection contains a collection of tables that list the various nominal
traits that describe the TAS 455 and TAS 465 Analog Oscilloscopes.
Included are electrical and mechanical traits.
Nominal traits are described using simple statements of fact such as Two,
both identical" for the trait Number of Input Channels," rather than in terms
of limits that are performance requirements.
TableĂ1Ć1:ăNominal Traits Ċ Vertical Deflection System
Name
Description
Number of Input Channels
Two, both identical, called CH 1 and CH 2.
Input Coupling
DC, AC, or GND.
GND input coupling disconnects the input connector from the attenĆ
uator and connects a ground reference to the input of the attenuaĆ
tor.
Sensitivity Range
2 mV/div to 5 V/div.
The sensitivity ranges from 2 mV/div to 5 V/div in a 1-2-5 seĆ
quence.
Trace Separation Control Range
±4 divisions.
Bandwidth Selections
20 MHz and FULL, selected independently for each channel.
TAS 455 Rise Time
5.8 ns.
Nominal rise times are calculated from the following formula:
RiseĄ TimeĄ (ns) TAS 465 Rise Time
350
BWĄ (MHz)
3.5 ns.
Nominal rise times are calculated from the following formula:
RiseĄ TimeĄ (ns) 350
BWĄ (MHz)
Vertical Position Range
±10 divisions from graticule center.
TekProbe Interface
Detects 1X, 10X, and 100X attenuator probes.
TAS 455 and TAS 465 Service Manual
1Ć5
Nominal Traits
TableĂ1Ć2:ăNominal Traits Ċ Time Base System
Name
Description
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TableĂ1Ć3:ăNominal Traits Ċ Triggering System
Name
Description
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Name
Description
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,#. !'#&! +1& &!,#. +$'( %-+, +$,
-$, +$'( +$,#'& '* ,*#!!* %'+ & &,* #&
," +'( '& #!-*,#'& %&-
1Ć6
Specifications
Nominal Traits
TableĂ1Ć5:ăNominal Traits Ċ Cursors
Name
Description
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#& #& +(%-, (%,+ (%,+ *$ *#! .% *(-'
TableĂ1Ć6:ăNominal Traits Ċ XY Operation
Name
Description
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& + *,#% %,#(' 0+,&
(%,+#. .*#%+ #' %#*, +,,#'!+
TableĂ1Ć7:ăNominal Traits Ċ Setup Memory Characteristics
Name
Description
('.(%,#% ,-) &(*0
,-)+
TableĂ1Ć8:ăNominal Traits Ċ Power Fuse
Name
Description
-+ ,#'!
#,"* ( ,/( -++ &0 -+ -+ ,0)+ * + (%%(/+
Voltage Range
TAS 455 and TAS 465 Service Manual
Fuse (250 V)
UL 198.6
(5 20 mm)
Fuse (250 V)
IEC 127
(5 20 mm)
1 +,
+,
1 +,
+,
1Ć7
Nominal Traits
TableĂ1Ć9:ăNominal Traits Ċ Mechanical
Name
Description
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'$ (. ,(0. 2"&$%/ +# - ')+0*/ -/. #+- /%" - '5
)+0*/"! &*./-0)"*/ +,/&+* H
'$ (. 2%"* /%" - ')+0*/"! &*./-0)"*/ &. , '5
$"! #+- !+)"./& .%&,)"*/ *+ )*0(. /-4
&)"*.&+*. /%/ #+((+2 -" *+)&*(
H
"&$%/ )) &*
H
&!/% )) &*
H
",/% )) &*
* (0!&*$ %*!(". )) &*
Specifications
Warranted Characteristics
&'0 02 0#!1',+ )'010 1&# 3/',20 1&1 "#0!/' # 1&#
+" +),% 0!')),0!,-#0 +!)2"#" /# #)#!1/'!) +"
#+3'/,+*#+1) !&/!1#/'01'!0
//+1#" !&/!1#/'01'!0 /# "#0!/' #" '+ 1#/*0 ,$ .2+1'$' )# -#/$,/*+!#
)'*'10 4&'!& /# 4//+1#" &'0 02 0#!1',+ )'010 ,+)5 4//+1#"
!&/!1#/'01'!0 )'01 ,$ 01/10 ,+ -%# 7 NOTE
#/$,/*+!# #/'$'!1',+ boldface type Name
Performance
Conditions
&# #)#!1/'!) !&/!1#/'01'!0 $,2+" '+ 1&#0# 1 )#0 ,$ 4//+1#" !&/!1#/'07
1'!0 --)5 2+"#/ 1&# $,)),4'+% !,+"'1',+0
H
&# ,0!')),0!,-# &0 ##+ "(201#" 1 + * '#+1 1#*-#/12/# #14##+
_ +" _ H
4/*72- -#/'," ,$ 1 )#01
H
&# ,-#/1'+% 1#*-#/12/# '0 #14##+ ,1&#/4'0# +,1#"
H
&# #*-#/12/# ,*-#+01',+ )' /1',+0 0'%+) -1& !,*-#+07
1',+ &3# ##+ -#/$,/*#"
*'+21#0 &0 ,!!2/#"
_ +" _ 2+)#00
TableĂ1Ć10:ăWarranted Characteristics Ċ Vertical Deflection System
Name
+-21 *-#"+!# ,2-)#"
Description
W 6 '+ -/))#) 4'1&
- 6 -
/' )# +%#
+!/#0#0 "#$)#!1',+ $!1,/ 5 DC Gain Accuracy
&# )'*'10 /# 0 $,)),40
TAS 455 and TAS 465 Service Manual
_ 1, _ 6 ,3#/ 1&# !#+1#/ "'3'7
0',+0 $1#/ 0'%+) -1& !,*-#+7
01',+
_ 1, _ +"
_ 1, _ 6 ,3#/ 1&# !#+1#/ "'3'7
0',+0 $1#/ 0'%+) -1& !,*-#+7
01',+
1Ć9
Warranted Characteristics
TableĂ1Ć10:ăWarranted Characteristics Ċ Vertical Deflection System (Cont.)
Name
Description
TAS 455 Bandwidth at the BNC input
and probe tip, using the StandardĆAcĆ
cessory Probe
60 MHz.
TAS 465 Bandwidth at the BNC input
100 MHz.
TAS 465 Bandwidth at the probe tip,
using the Standard
StandardĆAccessory
Accessory Probe
The limits are as follows:
Lower Frequency Limit, AC Coupled
Condition
Bandwidth
+15_ C to +35_ C
100 MHz.
-10_ C to +15_ C and
+35_ C to +55_ C
90 MHz.
10 Hz with 1X probe.
The AC Coupled Lower Frequency Limits are reduced by a factor of
10 when 10X, passive probes are used.
TAS 455 Crosstalk (Channel Isolation)
50 dB at 10 MHz, 35 dB at 60 MHz.
TAS 465 Crosstalk (Channel Isolation)
50 dB at 10 MHz, 35 dB at 100 MHz.
Delay Between Channels, Full BandĆ
width
200 ps between channels 1 and 2 for equal volts/div and coupling
settings.
CommonĆmode Rejection Ratio
(CMRR)
10:1 at 50 MHz.
Trace Shift
The limits are as follows:
Condition
Allowable Trace Shift
Changing volts/div settings
<±(0.1 division + 0.2 mV).
Selecting invert
0.5 division.
Changing from bandwidth limit
to full bandwidth
0.1 division.
Maximum Input Voltage
±400 V (DC + peak AC); derate at 20 dB/decade from 100 kHz to
13 V at 3 MHz.
Low Frequency Linearity
Within ±5%.
1Ć10
Specifications
Warranted Characteristics
TableĂ1Ć11:ăWarranted Characteristics Ċ Time Base System
Name
Description
Time Base Accuracy, Magnify Off
# &$'$-, + , !)&&)0,
Conditions
Time Measurement Accuracy
_ -) _ 4 _ -) _ (
_ -) _ 4 0 * .+2 **&$ , )/ + -# (- + $"#- $/$,$)(, 1&. ,
-# "+ - + )! $-# + -# !$+,- @ $/$,$)( )+ (, !+)' -# ,0 * ,-+)! -# '"($!$ ,0 * ( (2-#$(" 2)( -#
-# '"($!$ $/$,$)(
Time Base Accuracy, Magnify On
# &$'$-, + , !)&&)0,
Conditions
Time Measurement Accuracy
–10_ C to + 55_ C
1&.$(" (, $/ (
(, $/
4
_ -) _ (, $/ ( (, $/
4 _ -) _ (
_ -) _ (, $/ ( (, $/
4
0 * .+2 **&$ , )/ + -# (- + $"#- $/$,$)(, 1&. ,
-# "+ - + )! $-# + -# !$+,- @ $/$,$)( )+ (, !+)' -# ,0 * ,-+)! -# '"($!$ ,0 * ( (2-#$(" 2)( -#
-# '"($!$ $/$,$)(
)+$3)(-& ),$-$)( )(-+)& ("
# *),$-$)( )(-+)& $, & -) ')/ -# ,-+- )! -# ,0 * -) -#
+$"#- )! -# (- + / +-$& "+-$.& ( & -) ')/ -$' '+%
)++ ,*)($(" -) -# - (-# $/$,$)( )( ( .('"($!$ ,0 * -) -#
& !- )! -# "+-$.& (- +
+$& )(-+)& ("
)(-$(.).,&2 /+$& -0 ( &$+- , )(, $/$,$)( , --$(",
1- (, )-# -# $( ( &2 ,0 * , )(, $/$,$)( , -5
-$(", 2 !-)+ )! -$' ,
&2 .+2 $( 0 * +$"" +
)$(- -) -+- )! &2 0 *
4 )! + $(" )!
$/$,$)( )! -# $( ,0
* (,
Delta Delay Accuracy
4 )! + $(" )!
$/$,$)( )! -# $( ,0
*
TAS 455 and TAS 465 Service Manual
(,
1Ć11
Warranted Characteristics
TableĂ1Ć12:ăWarranted Characteristics Ċ Triggering System
Name
Description
TAS 465 EdgeĆType Trigger
S
Sensitivity,
iti it DC C
Coupled
l d
# &$'$-, + , !)&&)/,
TAS 455 EdgeĆType Trigger
Sensitivity DC Coupled
Sensitivity,
Trigger Level or Threshold Accuracy
Trigger Source
Sensitivity
(- +(& (1 #(( &
$.$,$)( !+)' -)
42 $(+ ,$(" -) $. 2
0- +(& ' !+)' -)
2 $(5
+ ,$(" -) ' 2
0- +(& ' !+)' -)
$(+ ,$(" -) -
# &$'$-, + , !)&&)/,
Trigger Source
Sensitivity
(- +(& (1 #(( &
$.$,$)( !+)' -)
42 $(+ ,$(" -) $. 2
0- +(& ' !+)' -)
2 $(5
+ ,$(" -) ' 2
0- +(& ' !+)' -)
2
$(+ ,$(" -) - 2
# &$'$-, + , !)&&)/, !)+ ,$"(&, #.$(" +$, ( !&&
-$' , (,
Coupling
Source
Accuracy
DC
All except
Line and
External
3 )! + $(" $.$,$)(
'
0- +(& 3 )! + $(" '
0- +(& 3 )! + $(" '
&& 0 *- $(
( 0- +(&
3 )! + $(" $.$,$)(
'
0- +(& 3 )! + $(" 0- +(& 3 )! + $(" && 0 *- $(
( 0- +(&
3 )! + $(" '
0- +(& 3 )! + $(" '
0- +(& 3 )! + $(" '
)$, % -
% -
1Ć12
2
2
'
$.$,$)(
Specifications
Warranted Characteristics
TableĂ1Ć12:ăWarranted Characteristics Ċ Triggering System (Cont.)
Name
Description
Delay Difference Between Ext Input and
Any Channel
<2 ns.
External Trigger Input Impedance
1 MW ±2% in parallel with 20 pF ±2.0 pF.
Maximum Input Voltage
±400 V (DC + peak AC); derate at 20 dB/decade from 100 kHz to
13 V at 3 MHz.
TableĂ1Ć13:ăWarranted Characteristics Ċ Video Triggering
Name
Description
Sensitivity
0.75 divisions of composite sync will achieve a stable display.
60 Hz Rejection
Stable video trigger with up to 4 divisions of 60 Hz on the video
signal.
Sync Offset
Stable video trigger if sync tip is ±15 divisions, referenced to input
ground.
Sync Separation
Stable trigger on positive or negative composite horizontal sync
(lines) video, for all 525/60 and 625/50 video systems which include:
NTSC, PAL, and SECAM.
Field Interval
Stable trigger on vertical sync interval >20 ms.
TableĂ1Ć14:ăWarranted Characteristics Ċ Cursors
Name
Description
Time Cursor to Signal Accuracy
Same as Time Base Accuracy + 0.1 division.
1/Time Accuracy
Readouts calculated using Time cursor difference.
Absolute Volts Accuracy
Accuracies are as follows:
Volts Cursor to Signal Accuracy
TAS 455 and TAS 465 Service Manual
Condition
Accuracy
-10_ C to +30_ C
±(1% of reading + 2% of one vertical
division + HF display errors + 0.5 mV +
trace shift errors).
+30_ C to +55_ C
±(1% of reading + 2% of one vertical
division + HF display errors + 4 mV +
trace shift errors).
±(1.6% of reading + 2% of one vertical division + HF display
errors).
1Ć13
Warranted Characteristics
TableĂ1Ć15:ăWarranted Characteristics Ċ XY Operation
Name
Description
XY Accuracy
±4%.
X Bandwidth
DC to at least 3 MHz.
Phase Difference Between X and Y
Amplifiers
±3_, DC to 150 kHz.
TableĂ1Ć16:ăWarranted Characteristics Ċ Power Requirements
Name
Description
Source Voltage and Frequency
90-132 VACRMS continuous range for 48 through 440 Hz.
180-250 VACRMS continuous range for 48 through 440 Hz.
Power Consumption
85 watts (150 VA).
TableĂ1Ć17:ăWarranted Characteristics Ċ Environmental and Safety
Name
Description
Third Party Certifications
This product shall conform to and be certified where appropriate
according to the following requirements:
Underwriter's Laboratories (UL)
Listed or Recognized
Component, Electrical and
Electronic Measuring and Testing
Equipment UL 1244.
Canadian Standards CSA
Association (CSA)
Category Certified Electronic
Development and Test
Equipment, CSA 22.2 no. 231.
SelfĆCertification International
ElectroĆTechnical Commission
(IEC)
SelfĆcertified by Tektronix to
comply with IEC 348
recommendation.
Temperature: Operating and
Nonoperating
Operating: -10_ C to +55_ C.
Nonoperating: -51_ C to +71_ C.
Humidity: Operating and Nonoperating
To 95% relative humidity at or below +40_ C to 75% relative
humidity form +41_ C to +55_ C.
A more sever test than stated in MIL-T-28800E, para. 4.5.5.1.1.2.
Altitude: Operating and Nonoperating
Operating: To 4572 m (15,000 ft.).
Nonoperating: To 12192 m (40,000 ft.).
Random Vibration: Nonoperating
2.46 gRMS, from 5 to 500 Hz, 10 minutes each axis.
1Ć14
Specifications
Warranted Characteristics
TableĂ1Ć17:ăWarranted Characteristics Ċ Environmental and Safety (Cont.)
Name
Description
)!*( &-/&*) +"-/&)$
$ #-*(
(&..&*).
%" &)./-0(")/ (""/. *- "2 ""!. /%" -",0&-"(")/. *# /%"
#*''*1&)$ ./)!-!.
'" /-*.//& &. %-$" 0. "+/&&'&/3
TAS 455 and TAS 465 Service Manual
/* 4 (&)0/". " % 2&.
H
H
*!" *# "!"-' "$0'/&*).
'.. -/ 0+-/ 1Ć15
1Ć16
Typical Characteristics
This subsection contains tables that list the various typical characteristics
that describe the TAS 455 and TAS 465 Analog Oscilloscopes.
Typical characteristics are described in terms of typical or average
performance. Typical characteristics are not warranted.
This subsection lists only typical characteristics. A list of warranted characĆ
teristics starts on page 1Ć9.
TableĂ1Ć18:ăTypical Characteristics Ċ Vertical Deflection System
Name
Description
UpperĆFrequency Limit, 20 MHz BandĆ
width Limited
20ĂMHz.
Trace Shift Leakage
The typical amount of trace shift while changing the input coupling
between GND and 1 MW DC is as follows:
Condition
Typical Trace Shift
-10_ C to +35_ C
<0.5 mV.
+35_ C to +55_ C
<2 mV.
Variable Volts/Div Offset
0.5 division trace shift while changing the variable volts/div setting.
Chop Mode Clock Rate
>500 kHz, <1 MHz.
Chop mode is allowed from 0.5 s to 10 ms sec/div settings.
Noise (measured tangentially)
H
0.06 div at 10 mV/div (600 mV).
H
0.10 div at 5 mV/div (500 mV).
H
0.14 div at 2 mV/div (280 mV).
TableĂ1Ć19:ăTypical Characteristics Ċ Time Base System
Name
Description
Time Base Linearity
±5%.
Sweep linearity applies over the center eight divisions. Excludes
the greater of either the first !@4 division or 25 ns from the sweep
start of the magnified sweep and anything beyond the 100th magĆ
nified division.
Delay Jitter
TAS 455 and TAS 465 Service Manual
1 part in 10,000 (20,000 for 1 ms and slower) + 2 ns, peakĆtoĆ
peak during a twoĆsecond time interval. Exclude the first 0.15 diviĆ
sions of the Main sweep.
1Ć17
Typical Characteristics
TableĂ1Ć20:ăTypical Characteristics Ċ Triggering System
Name
Description
#!85,! .%##!. !*/%0%2%05
+0 +1,(!
$! 05,%( /!*/%0%2%0%!/ .! / "+((+3/
Trigger Source
Typical Signal Level for Stable Triggering
+%/! !&!0
%2%/%+*/ ".+) 0+ 76 %*8
.!/%*# 0+ %2%/%+*/ 0 6
%2%/%+* +. (!// 3%(( *+0 0.%##!.
%2%/%+* ".+) 0+ '6 00!*18
0!/ /%#*(/ +2! 0$! 1,,!. 108
+"" ".!-1!*5 +" '6
%2%/%+* ".+) '6 0+ 6
%*.!/%*# 0+ %2%/%+* 0 6
00!*10!/ /%#*(/ !(+3 0$! (+3!.
10+"" ".!-1!*5 +" '6
%2%/%+* ".+) 6 0+ 6
%*.!/%*# 0+ %2%/%+* 0 6
00!*10!/ /%#*(/ !(+3 0$! 108
+"" ".!-1!*5 +" 6
5,%( /%#*( (!2!(/ "+. 40!.*( .%##!.%*# .! !.%2! 5 +*2!.08
%*# %2%/%+*/ 0+ 2+(0/ 3$!.! %2%/%+* !-1(/ ) +" 0.%##!.
/%#*( (!2!(
#!85,! .%##!. !*/%0%2%05
+0 +1,(!
$! 05,%( /!*/%0%2%0%!/ .! / "+((+3/
Trigger Source
Typical Signal Level for Stable Triggering
+%/! !&!0
%2%/%+*/ ".+) 0+ 76 %*8
.!/%*# 0+ %2%/%+*/ 0 6
%2%/%+* +. (!// 3%(( *+0 0.%##!.
%2%/%+* ".+) 0+ '6 00!*18
0!/ /%#*(/ +2! 0$! 1,,!. 108
+"" ".!-1!*5 +" '6
%2%/%+* ".+) '6 0+ 6
%*.!/%*# 0+ %2%/%+* 0 6
00!*10!/ /%#*(/ !(+3 0$! (+3!.
10+"" ".!-1!*5 +" '6
%2%/%+* ".+) 6 0+ 6
%*.!/%*# 0+ %2%/%+* 0 6
00!*10!/ /%#*(/ !(+3 0$! 108
+"" ".!-1!*5 +" 6
5,%( /%#*( (!2!(/ "+. 40!.*( .%##!.%*# .! !.%2! 5 +*2!.08
%*# %2%/%+*/ 0+ 2+(0/ 3$!.! %2%/%+* !-1(/ ) +" 0.%##!.
/%#*( (!2!(
1Ć18
Specifications
Typical Characteristics
TableĂ1Ć20:ăTypical Characteristics Ċ Triggering System (Cont.)
Name
Description
+3"/0 ."-1"* 5 #+. 1 "//#1( ,".9
0&+* +# 7"0 "2"( 0+ 1* 0&+*
+(!+## +*0.+( *$"
6 3&0%
!&2&/&+*
* ."/"/ &* /3"", %+(!+## 0&)" 5 # 0+. +# TableĂ1Ć21:ăTypical Characteristics Ċ Video Triggering System
Name
Description
&"(! ",.0&+*
0(" 0.&$$". +* +!! +. "2"* #&"(!/ &* &*0".( "! 2&!"+ /5/0")/
3&0% (&*" .0"/ "03""*
'6 *!
'6
TableĂ1Ć22:ăTypical Characteristics Ċ ZĆAxis
Name
Description
"*/&0&2&05
%" /"*/&0&2&05 &/ / #+((+3/
Condition
Sensitivity
0+
+/&0&2" 2+(0$" !" ."/"/ &*0"*/&05
(*'/ )4&)1) &*0"*/&05 0. "
6
6 0+ 6
&/" &)"
*,10 "/&/0* "
)+!1(0"/ *+.)( &*0"*/&05 0. "
0+ 6 (*'/ m ")
*/
'W ± 4&)1) *,10 +(0$"
8
,"'
,9, 0 '6 +. ("//
TableĂ1Ć23:ăTypical Characteristics Ċ Probe Compensator
Name
Description
.+" +),"*/0+. 10,10 +(0$"
*!
! ."-1"*
5
%" (&)&0/ ." / #+((+3/
TAS 455 and TAS 465 Service Manual
Characteristic
Limits
10,10 +(0$"
/"90+, 8 &*0+ W (+!
."-1"* 5
'6 8 1Ć19
Typical Characteristics
TableĂ1Ć24:ăTypical Characteristics Ċ Setup Memory
Name
#!
Description
& !! ! !! ! ! ! "!" # & $ ! ! ! !
!!" _ ! _ !! ! !
#! " ! ! ! !! !!& " $ ! !"! ! %! ! # _ ! ! & ! $
! %! ! $ _ 1Ć20
Specifications
Installation and Power On
!"*-! 4*0 !#%) 0.%)# /$! ) )'*# .%''*.*+!.
+!-"*-( /$%. +-*! 0-! /* +-*+!-'4 %)./'' ) +*2!- /$!( *)
$!& /$/ 4*0 $1! /$! +-*+!- !'!/-%' *))!/%*). $! )
)'*# .%''*.*+!. -!,0%-! /* *- /*
*)/%)0*0. -)#! "-*( 5 /* 5 (3%(0( *"
//. (4 ! -!,0%-! $!& /$/ /$! %)! *'/#! )#! .2%/$ %#0-! 6 %. / /$! +-*+!.!//%)# "*- 4*0- +*2!- .4./!(
$!& /$! "0.! /* !).0-! %/ %. /$! +-*+!- /4+! ) -/%)# /$! -!- +)!'
+-*1% !. 4*0 2%/$ /$%. %)"*-(/%*) $! ) )'*#
.%''*.*+!. -! .$%++! 2%/$ /$! ++-*1! "0.! %)./''! %#6
0-!6 %''0./-/!. $*2 /* *+!) /$! "0.! -2!-
*))!/ /$! +-*+!- +*2!- *- "-*( /$! -!-6+)!' +*2!- *))!/*%#0-! 6 /* /$! +*2!- .4./!(
Power
Connector
Fuse
Compartment
Line Voltage Range Switch
Figure 2Ć1:ăRear Panel
TAS 455 and TAS 465 Service Manual
2Ć1
Installation and Power On
Spare Fuse
Grasp the Fuse Drawer
and Pull Straight Out
Pop the Fuse Up from
the Bottom of the Drawer
Figure 2Ć2:ăFuse Compartment
"$! ($ % # ! !# !# %!# #"
! # !#$! !#% $#( ##$ %!#" """ !
# Specifications
% " ! #" ( %!( ## # ! # '$"# " # "" # # ! ! ( !& "#!$)
#" % # "# ! "
!"" # POWER $## # &! # "" $! )
POWER
Button
Figure 2Ć3:ăPOWER Button
2Ć2
Operating Information
Quick Start
$%- -!.%)( $!&*- 2)/ #!. +/%(.! 1%.$ -% )(.,)&- ( )*!,.%(#
-2-.!'- )" .$! ( (&)# -%&&)-)*!- )(! 2)/ $0!
*)1!, **&%! Selecting and
Deselecting Input
Channels
$! ( -%&&)-)*!- $0! .1) %(*/. $((!&- )/ (
%-*&2 .$! $((!&- -!*,.!&2 ), -%'/&.(!)/-&2 $! ")&&)1%(# -.!*!')(-.,.! $)1 .) -!&!. ( !-!&!. $((!&- "), %-*&2
)1!, )( .$! )-%&&)-)*! ( 1%. "), .$! -!&" .!-.- .) )'*&!.!
,!-- .$! CH 1 /..)( &).! )( .$! ",)(. *(!& $! CH 1 %( %.),
&%#$.- $((!& %- %-*&2! ( 0!,.%& )(.,)&- ( '!(/- ,!
--%#(! .) $((!& ,!-- .$! CH 2 /..)( &).! )( .$! ",)(. *(!& $! CH 2 %( %.),
&%#$.- $((!& %- %-*&2! ( )(.,)&- ( '!(/- ,! --%#(! .)
$((!& ,!-- .$! CH 1 /..)( --%#(%(# )(.,)& .) $((!& ,!-- .$! WAVEFORM OFF /..)( ,!')0%(# $((!& ",)' .$! %-3
*&2 ( &!0%(# $((!& %-*&2! Using the Menus
$! ( -%&&)-)*!- /-! '!(/- "), '(2 %(-.,/'!(.
-!..%(#- ( .$! ")&&)1%(# -.!*- 2)/ 1%&& -!. )(&2 $((!& )( ( ./,( .$!
/,-),- )(
,!-- .$! WAVEFORM OFF /..)( /(.%& )(&2 $((!& %- %-*&2! ,!-- .$! CURSOR '!(/ /..)(
!. .$! !&. 0)&.- VOLT /,-),- )( /-%(# .$! ")&&)1%(# #/% !
""
TAS 455 and TAS 465 Service Manual
""
""
(
""
(
2Ć3
Quick Start
(/ ,/( !(*"2(',% * -*+(*+ * "+)%1 ! ,". &(.% ('
"+ +(%" %"' ' ,! "',". (' "+ +! %"' + ,! '*%
-*)(+ '( ,( &(. ,! ,". -*+(* ' -+ ,! TOGGLE -,,(' ,(
+%, /!"! -*+(* "+ ,".
Position Active
Cursor
Active Cursor
Set
Active Cursor
Connecting a Signal
! ' +"%%(+()+ ), +" '%+ ,!*(- ! ,! *(',
)'% "')-, ('',(*+ %% CH 1 ' CH 2 ! )*(+ 1(- -+ (*
,$"' &+-*&',+ +!(-% ('%1 ,!(+ +-))%" /",! ,! '
+"%%(+()+ ('',"' +" '%+ ,( ,! ' +"%%(+()+ "+ %+( )(++"% /",! ,! -+ ( W (0"% %+
(* -+"' '1 )*( ,( ,$ &+-*&',+ (&)'+, ,! )*( ,(
&,! ,! "')-, !''% Compensating the Probe (' ) 3 Using AUTOSET
! AUTOSET ,-* ( ,! ' %%1 +,+ &(+, ( ,! *(', )'% (',*(%+
+"%%(+()+ -,(&,"3
('', ,! )*( (&)'+,"(' +" '% *(& ,! PROBE COMP
('',(* (' ,! *(', )'% ,( ",!* !''% ( ,! (+"%%(+() '
"+)%1 ,!, !''% + " -* 3 -*' %% (,!* !''%+ (
*++ ,! AUTOSET -,,(' (' ,! *(', )'% ", (' ,( ,!* +3
('+ ,( %%(/ ,! "'+,*-&', ,( #-+, %% ,! (',*(% +,,"' +
! "'+,*-&', /"%% ,*" * (' ,! /.(*& "+)%1 , %+, (' (&)%,
1% ' ',* ", !(*"2(',%%1 (' ,! ! +%"' ( ,! /.(*&
/"%% , ,! ',* !(*"2(',% *,"-% %"' + " -* 3 ! "','+",1
%.% "+ "'*+ " +, ,(( %(/ (* ."/% "+)%1
2Ć4
Operating Information
Quick Start
Figure 2Ć4:ăProbe Compensation Signal Displayed after AUTOSET
Compensating the
Probe
$$' !# $ #"&# !$% % $&# )& $% #% +#
!&% % % $ $ !$ # % * +
$&#%$ &$ !# #$% % !$% % !# &$% % % % % !&%$ $ $ &# # %$ $ %
# %+! PROBE COMP $ &#+ %% % !# % %# % CH 1 # CH 2 !&% % #$ %
(# #% % # % !
%% % !# %! % % PROBE COMP % #
Figure 2Ć5:ăConnections for Compensating a Probe
TAS 455 and TAS 465 Service Manual
2Ć5
Quick Start
(/(&7 7+( $335235,$7( ,1387 &+$11(/ &+$11(/ 25 &+$11(/ %; 35(66=
,1* 7+( CH 1 25 CH 2 )5217=3$1(/ %87721
#,7+ 7+( 352%( $77$&+(' %(7:((1 $1 ,1387 &+$11(/ $1' 7+( 352%( &20=
3(16$7,21 287387 2) 7+( 26&,//26&23( 35(66 7+( AUTOSET %87721 21 7+(
)5217 3$1(/
(7 7+( 9(57,&$/ 6&$/( 72 " 86,1* 7+( VOLTS/DIV &21752/
(17(5 7+( :$9()250 9(57,&$//; 86,1* 7+( 9(57,&$/ POSITION &21752/
(7 7+( +25,<217$/ 6&$/( 72 6 86,1* 7+( SEC/DIV &21752/
(7 7+( 75,**(5 &283/,1* 72 Noise Reject 86( 7+( )2//2:,1* *8,'(
!
872
+
2,6(
,6(
))
2,6( (-(&7
(-(&7
2) (7 7+( 9(57,&$/ %$1':,'7+ 72 Full 86( 7+( )2//2:,1* *8,'(
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"
))
"
))
<
#
8//
8//
+(&. 7+$7 7+( ',63/$;(' :$9()250 ,6 $ 648$5( :$9( :,7+ )/$7 7236 $1'
%277206 (( ,*85( = )25 ,//8675$7,216 ,1',&$7,1* 3523(5 $1' ,03523(5
352%( &203(16$7,21
2Ć6
Operating Information
Quick Start
Probe Compensated Correctly
Probe Over Compensated
Probe Under Compensated
Figure 2Ć6:ăHow Probe Compensation Affects Signals
! LowĆfrequency
Adjustment
Figure 2Ć7:ăLocation of Probe Head Adjustment
TAS 455 and TAS 465 Service Manual
2Ć7
Quick Start
Menu Map
)'41% 8 )2 ! ,!/ .& 3(% ,%-42 3. (%+/ 6.4 +.#!3% ,%-48$1)5%- &4-#3).-2
!-$ 3(%)1 !5!)+!"+% 2%33)-'2 %&%1 3. 3(% Instruction ,!-4!+ &.1 ./%1!3)-'
)-&.1,!3).- !".43 %!#( ,%-4
VERTICAL
MENU
433.-
Main Mode
Select LED on
&&
-
.$$ %5%- ".3(
&&
7
4++
TRIGGER
MENU
433.-
ALT/CHOP,
ADD
%-4 433.-
HORIZONTAL
MENU
433.-
&&
+3
(./
43.
43. %5%+
.1,!+
)-'+% %04%-#%
)$%. )-%
)$%. )%+$
SELECT toggles
between Main and
Delay modes
&&
-
1).1)36 %13
(
(
$$
)-%
.)2% %*%#3
%*%#3
%*%#3
)2)-'
!++)-'
&& ,)-
-
SAVE/RECALL
SETUP
%-4 433.-
CURSOR
%-4 433.-
&&
-
UTILITY
%-4 433.-
Delay Mode
Select LED off
Refer to the Instruction
manual for actual Utility
menus
Delay Intensity
Video Sync
Dual Delay
Single Sequence
Readout
Calibration Routines
TRIGGER
MENU
433.-
SELECT toggles
between Main and
Delay modes
Software Version
4-2 &3%1
1)' &3%1
)$%. )-%
(
(
$$
)-%
.)2% %*%#3
%*%#3
%*%#3
)2)-'
!++)-'
Figure 2Ć8:ăMenu Map
2Ć8
Operating Information
Circuit Description
& &'#" &%& ' '% #$%'#" # ' '%#"+ "
" # & #&#$& % '# ' &!'& " ' &'#" & "&&%,
Logic Conventions
& !"( %%& '# ' # %('& *' &'"% # &,!# & "
'%!& " && #'%*& &'' # ("'#"& % &% (&" '
$#&') # #")"'#" ' !#% $#&') # ' '*# # ) & & ' &'' " ' !#% "') ) & ' #* &'' " &''& !,
&# &% & .'%( !"" '% ') &'' #% . & !""
'% "#"/') &'' &$ )# '& '' #"&''(' #% #*
&'' )%, !#" ' '%#" )&
')/ #* &" & % "' , ' - $%+ '# ' &" "!
- " "!& % #"&% '# '% ')/ ')/ #*
#% '# ) #' ')/ " ')/ #* &''&
Module
Interconnection
(% / &#*& ' "'%#""'#" $'& '*" ' !#( & # '
" & #&#$&
TAS 455 and TAS 465 Service Manual
3Ć1
Circuit Description
DISPLAY CONTROL BOARD
A02
J82
2 PINS
J80
2 PINS
P82
2
P80
2
5 PINS
J84
P84
5
P84
J84
PROCESSOR BOARD
A05
5 PINS
P30 P30
16
J30
16 PINS
J30
16 PINS
J50
40 PINS
P50
J55
5 PINS
P55
40
FRONTĆPANEL
BOARD
A04
PROBE COMP
J35
J40
10 PINS
GND
BEZEL
BUTTON
BOARD
A09
10 PINS
P40
5
SW
115/230V
5 TERMINATIONS
LV & HV POWER SUPPLY BOARD
A63
12 TERMINATIONS
FAN
2 PINS
2 TERMINATIONS
12
2
1 TERMINATION
Figure 3Ć1:ăBlock Diagram
3Ć2
Theory of Operation
Circuit Description
ANALOG BOARD
A01
J10
CH 1
ATTENUATOR
J401
J11
CH 2
ATTENUATOR
J402
DISPLAY DRIVER BOARD
A03
J20
EXT TRIG
P80
J403
P50
J50
40 PINS
J68
2 PINS
P68
J67
23 PINS
P67
23
J75
VERTICAL
J69 DEFLECTION
2 PINS
J21
J66
P71
J70
13 PINS
P75
NC
J73
5
PINS
W66
23 TERMINATIONS
P70
P66
EXT ZĆAXIS
P69
DL68
J80
2 PINS
A64
P73 P76
5
9
J72
4 PINS
P72
4
J74
P74
HORIZONTAL
J71 DEFLECTION
2 PINS
NC
12
2
HIGH VOLTAGE
TAS 455 and TAS 465 Service Manual
3Ć3
Circuit Description
Analog Board
2*(-"+ &-3&12 3)& .2$*++.2$./& 3)1.4() " /1.#& $.--&$3&% 3. " .- 3)&
-"+.( #."1%
Attenuators )& "33&-4"3.1 )8#1*%2 "-% "-% 3)& 5&13*$"+ /1&",/+*'*&1 2&+&$3 3)& *-/43 $.4/+*-( "33&-4"3*.- '"$3.1 5"1*"#+& ("*- "-% 3)& *-5&13
'4-$3*.- )& /1.$&22.1 2823&, $.-31.+2 "-% $"+*#1"3&2 3)& "33&-4"3.12
Probe Coding Interface 1.#& $.%*-( *-3&1'"$& 2*(-"+2 /"22 3)1.4() 3)& -"+.( #."1% 3. 3)& #."1% "-% 3)&- 3. 3)& 1.-3 "-&+ #."1% )& /1.#& *-3&1'"$&
2*(-"+2 "1& %*(*3*9&% .- 3)& 1.-3 "-&+ #."1% "-% $.,,4-*$"3&% 3. 3)&
/1.$&22.1 2823&, 3. $.-31.+ 3)& *-2314,&-3
Analog Acquisition Hybrid )& *-/43 2*(-"+2 "1& 1.43&% 3. 3)& )*()+8 *-3&(1"3&% "-"+.( "$04*2*3*.)8#1*%
6)*$) %.&2 3)& "-"+.( /1.$&22*-( 1&04*1&% 3. /1.5*%& 5&13*$"+
).1*9.-3"+ "-% !:"7*2 2*(-"+2 3. 3)& *2/+"8 1*5&1 #."1% -%&1 $.-31.+
.' 3)& /1.$&22.1 3)& )8#1*% /1.5*%&2 5&13*$"+ 2*(-"+ /1.$&22*-( 31*((&12
26&&/2 2&04&-$*-( +.(*$ "-% *-3&-2*38 $.-31.+
External Trigger )*() *,/&%"-$& #4''&1 *2 42&% 3. *-3&1'"$& 3)& &73&1-"+ 31*((&1 2*(-"+ 3. 3)&
"-"+.( "$04*2*3*.- )8#1*%
Processor System
)& /1.$&22.1 #."1% *2 " ,*$1.$.-31.++&1 %&2*(- *$1.$.-31.++&1
*2 3)&
$.1& .' 3)& $*1$4*3 ./&1"3*-( "3 9 )& /1*,"18 '4-$3*.- .' 3)& /1.$&2:
2.1 *2 3. 1&$&*5& *-/43 '1., 3)& '1.-3 /"-&+ %*2/+"8 3)& 1&"%.43 "-% $.-31.+
3)& -"+.( #."1%
)& /1.$&22.1 #."1% $"- #& %*5*%&% *-3. '*5& 24#2823&,2 3)& /1.$&22.1 3)&
3)& 1&"%.43 3)& '1.-3:/"-&+ *-3&1'"$& "-% 3)& "-"+.( #."1%
*-3&1'"$& %&2$1*/3*.- .' &"$) 24#2823&, '.++.62
Processor Subsystem )& /1.$&22.1 24#2823&, $.-2*232 .' " :#*3 *-3&(1"3&% ,*$1.$.-31.++&1 "-%
*32 24//.13*-( $*1$4*32 3 $.-3"*-2 '.41 /&1*/)&1"+ ,.%4+&2 3)& " (&-&1:
"+:/41/.2& 3*,&1 " 04&4&% 2&1*"+ ,.%4+& "-% " 2823&, *-:
3&(1"3*.- ,.%4+& 3Ć4
Theory of Operation
Circuit Description
!-* ! .24987 &6* 97*) +36 1*&796.2, 8-* 1&.2 &2) )*0&= 7;**4 ,&8*7 &7
;*00 &7 8-* 1*&796*1*28 0&8(-*7 !-* 3984987 3+ 8-* ! &6* 97*) +36
03&).2, 36 6*7*88.2, :&6.397 7*(8.327 3+ 8-* &2&03, '3&6)
!-* .7 46.1&6.0= 97*) &7 & 7=2(-632397 '97 +36 7*88.2, 94 8-* .28*62&0
6*,.78*6 '.87 3+ 8-* 46*&14 &2) 7 32 8-* &2&03, '3&6)
!-* 13)90* )3*7 &00 3+ 8-* (-.4 7*0*(8.2, +36 &00 3+ 8-* &))6*77&'0* 7
32 8-* 463(*7736 '3&6) " -&7 8-6** 8=4*7 3+ 7944368 (.6(9.86= !-* +.678
8=4* .7 4900?94 6*7.78367 +36 0.2*7 &2) +36 (32+.,96.2, 8-* 463(*7736 '338
94 !-* 7*(32) 8=4* .7 & (6=78&0 37(.00&836 !-* (6=78&0 37(.00&8*7 &8 />
!-* 463(*7736 97*7 & 4-&7* 03(/ 0334 83 (6*&8* & > 7=78*1 (03(/ +631
8-.7 (6=78&0 !-* 8-.6) 8=4* .7 & 43;*6?32 6*7*8 (.6(9.8 !-* 6*7*8 (.6(9.8
(327.78.2, 1&.20= 3+ " .7 & 4&77.:* (.6(9.8 8-&8 132.8367 # $-*2 8-*
43;*6 79440= *<(**)7 # " 6*0*&7*7 8-* 6*7*8 0.2* &003;.2, 8-* 463?
(*7736 83 692 + # )6347 '*03; # & 6*7*8 3((967
ROM/RAM Subsystem !-* 79'7=78*1 (327.787 3+
/' 3+ 0&7- /' 3+ 78&8.(
&2)
/' 3+ 232?:30&8.0* 78&8.( !-* 0&7- -&7 & 6*59.6*?
1*28 ;-.(- 78&8*7 8-&8 .8 1978 238 -&:* &2 )96.2, & ;6.8* (=(0* 327*?
59*280= 8-* ,&8*7 3+ " .2 8-.7 79'7=78*1 46*:*28 8-.7 +631 -&44*2.2,
Readout Subsystem !-* 6*&)398 79'7=78*1 (327.787 3+ & (97831 6*&)398 8;3 7 & #
6*+*6*2(* :308&,* &2) 731* 7944368 6*7.78367 &2) (&4&(.8367 +36 (314*27&?
8.32 &2) +.08*6.2, !-* 6*&)398 -&7 &2 .28*62&0 .283 ;-.(- 8-* 463(*7?
736 4987 &7(.. (-&6&(8*67 !-* 463(*7736 &073 (3286307 8-* 78&8* 3+ 8-* 6*&)?
398 +36 (&0.'6&8.32 (96736 437.8.32.2, &2) 94)&8* 6&8* !-* 6*&)398 .87*0+ 8-*2 )6.:*7 8-* :*68.(&0 &2) -36.>328&0 7 &7 ;*00 &7 8-* '0&2/.2,
FrontĆPanel Interface Subsystem !-* +6328?4&2*0 .28*6+&(* 79'7=78*1 (327.787 3+ " "! &2) .87
> (6=78&0 !-* 463(*7736 (31192.(&8*7 83 8-* +6328?4&2*0 463(*7?
736 8-639,- &2 0./* .28*6+&(* !-.7 .28*6+&(* .7 1&.28&.2*) '= 8-*
"! 6922.2, &8 '&9) !-* "! .7 (322*(8*) 83 32 8-*
463(*7736 " 8&0/7 83 " 97.2, )&8& 0.2*7 8-639,- Analog Board Interface Subsystem !-* &2&03, '3&6) .28*6+&(* 79'7=78*1 (327.787 3+ &2 83 (32:*68?
*6 &2) & 83 (32:*68*6 !-* 0.2*7 (31.2, +631 8-* &2&?
03, '3&6) &6* !-*7* 0.2*7 &6* (32:*68*) 83 '= 97.2, 8;3 86&27.7?
8367 &2) & (3940* 3+ 6*7.78367
!-* %!! 0.2*7 ,3.2, 83 8-* &2&03, '3&6) 2**) 83 '* !-*7* 0.2*7
&6* (32:*68*) 97.2, 8-6** 6*7.78367 *&(-
TAS 455 and TAS 465 Service Manual
3Ć5
Circuit Description
Display Assembly
!! #$'")$# ,+$'"( )-) # *'($'( ( (%!. . ) (%!.
'+' $' ) #')( ) +$!)( #(('. )$ '+ ) )
!($ $#)#( ) +')! # $'/$#)! "%!' '*)'.
Vertical Output +')! $*)%*) "%!' %'$+( ) #! () $ "%!)$# $ )
+')! (#! $*)%*) $ ) +')! "%!' ( $##) )$ ) +')! %!)( ')! )" # '&*#. $"%#()$# #),$' ( ($"
, ' *()! ' !($ $#)# # )( '*) !$ $"%#(0
)$# #),$' ( $'')( $' ''$'( # ) )" '(%$#( $ ) +')! !.0
!# # +')$#( # )" # '&*#. '(%$#( $ ) )$)! +')! (.(0
)" +')! (#! ) ) #%*) $ ) +')! $*)%*) () ( ("%!
# (#) )$ ) )'' '*)'. $# ) #!$ $' ( +')! (#! ( *( $' !')$#
Horizontal Output $'/$#)! $*)%*) "%!' %'$+( ) #! () $ "%!)$# $ )
$'/$#)! (#! # '+( ) $'/$#)! %!)( ')!. #%*)
(#! '$" ) #!$ $' ( *''#) # ) $*)%*) (#! )$ ) (
+$!)
High Voltage ( '*)'. %'$+( ) #(('. ()) # .#" !+!( )$ (*%%$')
) (# # 0-( '+ 0-( "%!' %'$+( "%!)$#
$ ) 0-( (#! '$" ) #!$ $' , ( *''#) $*)%*) $
) 0-( "%!' ( )# %%! )$ )
'()$'' '*)'. , !+!
()( )( (#! )$ ) )$ !+! $*( "%!' '+( )( #%*)
(#! '$" *(' $#)'$! $# ) '$#) %#! ( #!( ) *(' )$ $%)0
"/ ) $*( )$#! '*)'. ( %'$+ )$ (*%%$') ) #(('.
( # $%')$# !+!( $' ) -)'#! 0 -( $##)$' %'$+( ) !). )$ "$*!) ) 0-(
"%!' '*) $# ) (%!. '+' $' )*( "$*!)# $' !# #
) #)#(). $ ) (%!.
Vertical Termination (TAS 485 only)
Front Panel
3Ć6
%'$(($' (.()" (#( # '+( #$'")$# )$ # '$" )
'$#) #! $' '$#) #! $' '( ) '$#)0%#! $#)'$!( #
#( # )' ())#( ' '%$') )$ ) %'$(($' (.()" '$#)0
%#! %'$(($' )*'#( ) ( $# # $ #')( ) %'$ $"%#(0
)$# (#! # %'$((( ) %'$ $# #)' (#!(
Theory of Operation
Circuit Description
Menu Switches A4
4
FrontĆpanel menu switches are read by the Front Panel board and changes
in menu selections are sent to the processor system.
CPU A4
1
U101 is the frontĆpanel processor (FPP) and monitors the frontĆpanel conĆ
trols. It is a single chip microprocessor with builtĆin RAM, ROM, AĆtoĆD
converter, programmable timer, and serial communications interface.
The frontĆpanel processor reports any changes in state of the frontĆpanel
controls to the U201 on the A5 CPU board via the serial communication
interface.
The programmable timer TCMP1 (U101 pin 2) produces a 0 to 5V, 1kHz
square wave signal (CALSIG) that is used for probe compensation. TCMP2
(U101 pin 1) produces a 0 to 5V, 1 kHz signal that is converted to ECL level
(DITHER) by the resistive divider R503-R505. DITHER is used by the AnaĆ
log Signal Processor on the analog board.
FPP Pots and Probes A4
1
2
The pot/probe scanner working with the AĆtoĆD converter internal to the
frontĆpanel processor digitizes the inputs and reports the amount a pot has
turned and the type of probe used.
Control lines to analog multiplexers U420 and U421 determine whether to
scan for pots or probes. If pots are to be scanned, one of 10 possible pot
inputs is read from either multiplexer U420 or U421. The voltage at the wiper
of the pot selected is applied to the frontĆpanel processor and digitized. The
amount and direction of change from the previous stored value is calculated
and sent to the host processor 68331 on the processor board.
The intensity and readout intensity pots on the front bezel are stopped pots
and represent one input each on the analog multiplexer U420. The other 8
pot inputs on U420 and U421 represent the 4 continuous rotation pots on
the front panel which are made of two wipers separated by 180 degrees and
contact a single resistive arc. Each continuous rotation pot represents two
inputs to the multiplexers.
Analog multiplexer U420 also selects one of the 4 possible probe inputs.
The probe code resistance from the P6139 probe is converted to a voltage
by pullĆup resistors R411-R414. This voltage is read by the pot/probe
scanner and the probe type is determined and sent to the host processor.
LEDs and Driver A4
3
There are 5 LEDs (light emitting diodes) on the front panel which are conĆ
nected between the outputs of an 8 bit LED latch, U202, and a pullĆup
resistor to +5 V. When a particular LED needs to be turned on or off, the
TAS 455 and TAS 465 Service Manual
3Ć7
Circuit Description
!-*)/6+) ' +-* ..*- *)1 -/. /# $ )/$!$/$*) - $1 !-*( /# #*./
+-* ..*- /* /# *-- / - .. *) /# '/# ) #)" . /#
.// *! /# Switches A4
# !-*)/6+) ' .2$/# . ) ( )0 .2$/# . - --)" $) ) --4 *! -*2. ) *'0(). # .2$/# .)) - . /. /# )$) -*2 '$) . '*2 $)
. ,0 ) ) + -!*-(. ) $"#/ *'0() .) /* # & !*- )4 #)" . $)
.// ) - +*-/. /# . #)" . /* /# #*./ +-* ..*- # ) .2$/# $.
'*. *) -*2 $. *)) / /* *) *'0() '$) /#-*0"# ) $.*'/$*) $*
) /# *'0() '$) $. +0'' '*2 $)$/$)" .2$/# '*.0- Power Supply
# +*2 - .0++'4 $. .2$/#$)" +*2 - *)1 -/ - / .0++'$ . +*2 - /* ''
*.$''*.*+ $-0$/-4
2* " ) -/$*). *! +*2 - .0++'$ . 2 - +-*0 # -'4 1 -.$*) - 6
,0$- . /# *+ -/*- /* *)!$"0- $/ /* /# $)*($)" '$) 1*'/" /# '/ 1 -.$*) 0/*(/$''4 %0./. /* /# $)*($)" '$) 1*'/" ) #. )* 3/ -6
)' %0./( )/. # ) 2 +*2 - .0++'4 2. $)/-*0 / . -$' )0( ) $. )*/ *0( )/ $) /#$. ()0'
! ) -'4 (* ' +*2 - .0++'4 $. - +' 2$/# /# '/ - 1 -.$*) # & 2$/#
4*0- '*' &/-*)$3 - +- . )//$1 *0/ */$)$)" /# ) ..-4 !$-(20+"- # POWER .2$/# '*/ *) /# !-*)/ +) ' *)/-*'. '' +*2 - /* /#
*.$''*.*+ $)'0$)" /# +*2 - .0++'4
Fan
3Ć8
# !) +-*1$ . !*- $- **'$)" !*- /# *.$''*.*+ / *)) /. /* 5
*) /# *2 - 0++'4 *-
Theory of Operation
General Instructions
' &#&!" &(#" '(#" ' * "(# (+# ')'(#"' Brief
Performance Checks " Performance Tests
Brief Performance Checks '(#" #"("' $&#)&' (# *&- (
#$&(#" # ( " " # ' #'#$'
Performance Tests '(#" #"("' $&#)&' (# #"&! (
$&#&!" # ( " ' #'#$' (# (' +&&"(
'$(#"'
Using the Brief
Performance Checks
Procedures
Brief Performance Checks #"(" (& $&#)&' #+&." '(' )"(#" '(' " !$&()& #!$"'(#" &(#"' #!.
$ (" (' ' (' $$&#,!( - #" #)&
Self Tests & $&#&! (! ( #' #'#$ " $#+& #"
Functional Tests )' ( $&# #!$"'(#" #)($)( #" ( &#"( $"
' ('(.'" '#)& #& )&(& *&-" (( ( #' #'#$ )"(#"'
$&#$& - '("&.''#&- $&# " ) +( (' #' #'#$ ' (
#" - %)$!"( &%)&
# &$ - #"&! (( (' #' #'#$ )"(#"' " +' )'( $&#$&.
- $&#&! ( $&#)&' " ( Functional Tests '(#" + " #"
$ .
Advantages: ' $&#)&' & %) (# # &%)& "# ,(&" %)$.
!"( #& '" '#)&' " $&#* #"" (( ( #' #'#$
+ $&#&! $&#$& - ' '# $&#* "'.#" ,$&" (# #!
! & +( ( #"(&# ' " !")'
Temperature Compensation Calibrations #+ -#) (# )'( ( '$ )&- # ( #' #'#$
Using the
Performance Tests
Procedures
Performance Tests #"&! (( ( " ' #'#$'
$&#&! ' '$ Performance Tests " #" $. #!$ (.
" (' ('(' (' $$&#,!( - (+# #)&' " &%)&' ')( ('(
%)$!"( Equipment Required #" $ .
Advantages ' $&#)&' &( " # +&&"( '$.
(#"'
TAS 455 and TAS 465 Service Manual
4Ć1
General Instructions
Conventions
!# &#$ %$ $% !# ' % ( #% H
H
H
% %$%
"&!% #"&# !!
# &#
# $%#&% % &$ # %,! %# # $% # & %
!!#$ %*! # )! +!#$$ VERTICAL MENU
% +$% CPLG % DC
$* % % % $ ! * #% * & &$% #
% % !# &# !# !#*
$ !# &#$ ##$ % % #%& $ # )!
+! $% % &#$ # % % $ '#% #%& &# , $ ($
( % %#!#% % ##$
Top Horizontal
Graticule Line
Center Horizontal
Graticule Line
First Vertical
Graticule Line
Center Vertical
Graticule Line
Tenth Vertical
Graticule Line
Figure 4Ć1:ăGraticule References
$ !# &#$ * $ * & % # $% $!* $% $,
!* $ $$%% $!* $ & % ' %$ %## ! % $(%
$ !$ & %## # $ & % +#,#& MAIN SWP TRIG'D $ & # %
4Ć2
Performance Verification
Brief Performance Checks
* *+ &% &%+ %* +) ) ')&,)* +.& ++ -) 0 + &')+ &% &
+ % %#& * ##&*&'* % &% +& ')&)$ ) # )+ &% +& &$'%*+ &) +$')+,) -) %*
PowerĆOn Self Tests ,* %+)%# )&,+ %* ')&)$ + '&.) &%
+& &% )$ * ,%+ &%# +0 % ')&') !,*+$%+
Functional Tests ,)+) -) 0 ++ + &* ##&*&' ,%+ &%* ')&')#0
* +*+* ,+ # 1 + )&%+ '%# PROBE COMP * %# % *+%)
**&)0 ')&
Temperature Compensation Calibrations ,* %+)%# )&,+ %* %
+ &%* )&$ 0&, +& !,*+ + *'#0 ,)0 & + &* ##&*&' *
!,*+$%+* ) +0' ##0 %**)0 &%#0 .% + &')+ % +$')+,)
% + #*+ # )+ &% +$')+,) -) * $&) +% _ &.-)
')&)$ % +* &$'%*+ &%* &) $" % ) + # $*,)$%+
%*,)* &'+ $,$ ,)0
%0 & +* +*+* )+,)% # $** &) & %&+ ')&)$ * *++
&%++ 0&,) #&# "+)&% / *)- %+) &) *#* % %) &) $&)
%&)$+ &%
PowerĆOn Self Tests
* +*+* -) 0 ++ + %+)%# '&.)3&% %&*+ * '** 0 &% )$3
% %& ))&) $*** ) )'&)+ &% *)%
Functional Tests
',)'&* & +* ')&,)* * +& &% )$ ++ + * &* ##&*&' ,%3
+ &%* ')&')#0 &%#0 (, '$%+ )(, ) * *+%)3**&)0 ')&
* ')&,)* -) 0 ,%+ &% ++ * +0 -) 0 ++ + &* ##&3
*&' operates 0 & not -) 0 ++ + &')+* . + % # $ +*
)&) .% + ,%+ &%# +*+* ++ &##&. %*+),+ 0&, +& -) 0
++ * %# '')* &% *)% 2++ * &,+ - - * &%* % $'# 3
+, &) 2* ') & & &,+ * / &) 1&%+# - * &%* & not
%+)')+ + (,%+ + * -% * # $ +* ')+ &% . + % # $ +* *
" % Performance Tests . % &% ' 3
$" %* +& + )&%+3'%# *++ %* ++ ) %&+
## &,+ % + ')&,)* -) + &% ')&,) )(, )*
0&, +& *+ + &* ##&*&' +& )+ % ,#+ *++ %* &) -) 0 %
,%+ &%* 0&, $" %* +& +* ,#+ *++ %* &+) +%
+&* ## &,+ % + ')&,) 0&, $0 &+ % %-# )*,#+* %
+ * * % + ')&,) % )&$ *+' TAS 455 and TAS 465 Service Manual
4Ć3
Brief Performance Checks
Functional Tests Prerequisites
)1, )( ." )-#&&)-)* ( &&)1 '#(/. 1,'3/* ), *,3
),'#(! ."#- *,)/, $/-. ." READOUT )(.,)& .) #-*&2 ."
,)/. ( ." INTENSITY )(.,)& .) #-*&2 10 ),'-
#-& ." /& &2 1#." ." )&&)1#(! '(/ -&.#)(-
,-- ." UTILITY /..)( ( -&. CONFIG ,)' ." '#( '(/
&. MORE /(.#& 2)/ ( -&. Dual Delay Disabled
,-- ." ALT/CHOP, ADD /..)( ( -. ADD .) Off
(-.&& ." *,) )( CH 1 )((. ." *,) .#* .) PROBE COMP )(
." ,)(.3*(& )((. ." *,) !,)/( .) ." !,)/( ,,& ) (
/(/- #(*/. - #!/, 3
)' /(.#)(& "%- ,+/#, .". 2)/ #(-.&& ." *,) )( )((.),).", ."( CH 1 && /(.#)(& "%- /- ." PROBE COMP )( ."
,)(.3*(& - ." -#!(& -)/,
Figure 4Ć2:ăTest Hookup for Functional Tests
Verify the Probe Compensator Output
,-- ." WAVEFORM OFF /..)( /(.#& ." ,)/. #(#.- .". )(&2
"((& #- -&.
,-- ." AUTOSET /..)(
,-- ." VERTICAL MENU /..)( ( -. CPLG .) DC
. ." 0)&.-#0 -& .) ( 0,.#&&2 (., ." #-*&2
. ." -#0 -& .) -
,-- ." CURSOR /..)( ( -. VOLT .) On
&#!( ." .#0 /,-), .) ." .)* ) ." -#!(& /-#(! ." (,& /,*)-
()
4Ć4
Performance Verification
Brief Performance Checks
, -- .# TOGGLE /..)( ( &$"( .# .$0 /,-), .) .# )..)' )!
.# -$"(& /-$(" .# ( ,& /,*)- ()
,$!3 .#. .# )&.- , )/. $- )/. . 1/T .) On
&$"( .# .$0 /,-), .) ,$-$(" " )! .# -$"(& /-$(" .# ( ,&
/,*)- ()
, -- .# TOGGLE /..)( ( &$"( .# .$0 /,-), .) .# ( 2. ,$-$("
" )! .# -$"(& /-$(" .# ( ,& /,*)- ()
,$!3 .#. .# , )/. $- )/. %4
. TIME .) On
,$!3 .#. .# $' , )/. $- )/. '-
Verify the Input Channels
$-*&3 .# #(( & .) 0 ,$!$ ( ./,( && ).# ,- )!!
(-.&& .# *,) )( .# #(( & .) 0 ,$!$ , -- .# AUTOSET /..)(
, -- .# VERTICAL MENU /..)( ( - . CPLG .) DC
,$!3 .#. .# #(( & $- )* ,.$)(& )(!$,'$(" .# !)&&)1$(" -.. 5
' (.- , .,/ H
# 0 ,.$& -& , )/. $- - . .) !), .# #(( & /( , . -.
( -+/, 10 -$"(& )/. $0$-$)(- $( '*&$./ $- )(5
-, (
H
, --$(" .# SET LEVEL TO 50% /..)( - .- .# .,$"" , & 0 &
, )/. .) **,)2$'. &3 H
# 0 ,.$& POSITION )(.,)& ')0 - .# -$"(& /* ( )1( .#
-, ( 1# ( ,).. ./,( .# )..)' *),.$)( )! .# $-*&3 10 !),' .) .# (. , #),$4)(.& ",.$/& &$( H
/,($(" .# VOLTS/DIV )(.,)& )/(. ,&)%1$- ( &)%1$ , - - ( $(, - - .# '*&$./ )! .# 10 !),' ./,( .#
0)&.-$0 -& .) , -- .# VERTICAL MENU /..)( ( - & . CPLG & . .# !)&&)15
$(" )/*&$(" .3* - ( 0 ,$!3 .# $-*&3
TAS 455 and TAS 465 Service Manual
H
& . DC )/*&$(" ( 0 ,$!3 .#. .# 10 !),' '*&$./ $- *)-$5
.$0 5")$(" !,)' .# (. , #),$4)(.& ",.$/& &$( H
& . AC )/*&$(" *, -- .# SET LEVEL TO 50% /..)( (
0 ,$!3 .#. .# 10 !),' $- (. , . )/. .# (. , #),$4)(.&
",.$/& &$( H
& . GND )/*&$(" ( 0 ,$!3 .#. -.,$"#. &$( $- $-*&3 ()
10 !),'
4Ć5
Brief Performance Checks
$%" $ %! $ DC !"## $ CLEAR MENU %$$ !$ $# !" %" %$ !%$ # " &"
Verify the Alt/Chop and Add Functions
#$ $ !" CH 1
"## $ WAVEFORM OFF %$$ %$ $ " %$ $# # $ ) #$ "## $ AUTOSET %$$ "## $ CH 2 %$$ $ ! #$ $ $" $ $ $$ "* $ "$% "## $ WAVEFORM OFF %$$ " & $ #!)
"## $ ALT/CHOP, ADD %$$ #$ ADD $ On
") $$ # '& " !!" ($) &# # !$%
# $ $ #!)
$ DISP $ Chop
$ $ #& # $ #
") $$ $ $' '& "# " #!) #%$ %#)
$ DISP $ Alt
") $$ $ $' '& "# " #!) $"$)
$ ADD $ Off
"## $ CLEAR MENU %$$ Verify the Time Base
"## $ WAVEFORM OFF %$$ %$ $ " %$ $# # $ ) #$ #$ $ !" CH 1
"## $ AUTOSET %$$ 4Ć6
Performance Verification
Brief Performance Checks
,# 3 .". ." '#( .#' - #- )*,.#)(& )( #,'#(! ." )&&)1#(!
-..'(.- , .,/
H
( *,#) ) ." -+/, 10 #- )/. #0 "),#4)(.& #0#-#)(-
H
).. ." SEC/DIV )(.,)& &)%1#- ( 0,# 3 .". ." 10 ),'
2*(- '), "),#4)(.& #0#-#)(- *, *,#) ) 10 ),' ( .".
)/(.,&)%1#- ,)..#)( )(.,.- #.
H
. ." -#0 -& .) '- ( 0,# 3 .". **,)2#'.&3 )(
*,#) ) 10 ),' *, "),#4)(.& #0#-#)( #- #-*&3
H
).. ." "),#4)(.& POSITION )(.,)& ( 0,# 3 .". ." 10 ),'
')0- & . ( ,#!". )(5-,(
H
,--#(! ." MAG /..)( "(!- ." -#0 -& ,)' '- .)
- ( )( *,#) ) ." -+/, 10 #- )/. .( "),#4)(.&
#0#-#)(- ./,( .) ()(5'!(# # #-*&3 3 *,--#(! ." MAG
/..)( !#(
,-- ." HORIZONTAL MENU /..)( ( -. DELAY .) On
. ." &3 -#0 -& .) -
,-- ." TRIGGER MENU /..)( ( -. MODE .) Runs After
,-- ." HORIZONTAL MENU /..)(
&. TRCSEP ,)' ." '#( '(/ ( 0,.#&&3 *)-#.#)( ." &3
.#' - &)1 ." '#( .#' - /-#(! ." (,& /,*)- ()
&. DELAY ,)' ." '#( '(/
,# 3 .". ." &3 .#' - #- )*,.#)(& )( #,'#(! ." )&&)1#(!
-..'(.- , .,/
H
" '#( -1* "- ( #(.(-# # 4)( ) **,)2#'.&3 "),#5
4)(.& #0#-#)(- $/-. ." INTENSITY &0& # (--,3 .) 0#1 ."
(.#, #(.(-# # 4)(
H
)..#(! ." (,& /,*)- () &)%1#- ')0- ." #(.(-# #
4)( .) ." ,#!". )(5-,( )-#.#)( ." #(.(-# # *),.#)( .) ."
(., ) ." -,(
$/-. ." &3 -#0 -& .) -
. MAIN .) Off ( )( #,' .". )(&3 ." &3 -#0 -& ##-*&3 ( ." *,#) ) ." -+/,510 -#!(& #- )/. #0 "),#4)(5
.& #0#-#)(-
. MAIN .) On ( DELAY .) Off
Verify the Trigger System
,-- ." WAVEFORM OFF /..)( /(.#& ." ,)/. #(#.- "((& #- ." )(&3 -&. "((&
,-- ." AUTOSET /..)(
TAS 455 and TAS 465 Service Manual
4Ć7
Brief Performance Checks
) ) (!+ (" )% #(
'(( ) TRIGGER MENU *))%$ $ () MODE )% Auto
'!. ) ) ) #!$ )'!' !( %&')!%$" %$!'#!$ ) ) ) %""%,!$
())#$)( ' )'*
H
%))!$ ) )'!' LEVEL %$)'%" $( ) #!$ )'!' "+"
'%*)
H
%))!$ ) )'!' LEVEL %$)'%" ) '%* !)( '$ )'!'( $
*$)'!'( ) !(&". + ) (!$" *$)'!'
H
'((!$ ) SET LEVEL TO 50% *))%$ )'!'( ) (!$" $ ) )'!' "+" '%*) !$!)( &&'%-!#)". '(( ) HORIZONTAL MENU *))%$ $ () DELAY )% On
) ) ". (!+ (" )% (
'!. ) ) ) ". (,& !( %&')!%$" %$!'#!$ ) ) $ !$)$(!0
! /%$ &&'( %$ ) #!$ (,&
'(( ) TRIGGER MENU *))%$ $ () MODE )% Trig After $
SRC )% Ch1
'!. ) ) ) ". )'!' !( %&')!%$" %$!'#!$ ) ) ) %""%,0
!$ ())#$)( ' )'*
H
%))!$ ) )'!' LEVEL %$)'%" $( ) ". )'!' "+"
'%*)
H
%))!$ ) )'!' LEVEL %$)'%" ) '%* !)( '$ )'!'( $
*$)'!'( !$)$(!! /%$ !(&". $ $%) !(&". ) ". (,& + ) (!$" *$)'!'
H
'((!$ ) SET LEVEL TO 50% *))%$ )'!'( ) (!$" ) )'!' "+" '%*) !$!)( &&'%-!#)". $ ) !$)$(!0
! /%$ !( !(&".
'(( ) HORIZONTAL MENU *))%$ $ () DELAY )% Off
) ) (!+ (" )% #(
'(( ) TRIGGER MENU *))%$ $ () MODE )% Single Sequence
$ %$!'# ) %""%,!$ ())#$)( ' )'*
H
' !( $% ,+%'# !(&".
H
'((!$ ) RESET S SEQ *))%$ *(( %$ (,& % ) ,+%'# !(&". )% %*'
) ) (!+ (" )% #(
) MODE )% Auto Level
!(%$$) ) &'% '%# ) %(!""%(%&
4Ć8
Performance Verification
Brief Performance Checks
Verify the External Trigger
."// 0%" TRIGGER MENU 100+* /"0 MODE 0+ Normal *! SRC 0+
EXT <1> +*#&.) 0%0 *+ /3"", &/ !&/,(5"!
*/0(( 0%" ,.+" +* 0%" EXT TRIG +**" 0+. +**" 0 0%" ,.+" 0&, 0+
PROBE COMP +* 0%" #.+*08,*"( +**" 0 0%" ,.+" $.+1*! 0+ 0%"
$.+1*! .."( +# * 1*1/"! &*,10 ."// 0%" SET LEVEL TO 50% 100+*
".&#5 0%0 0%" )&* /3"", &/ 0.&$$"."! *! /&*$(" 0. " &/ !&/,(5"!
."// 0%" AUTOSET 100+*
&/ +**" 0 0%" ,.+" #.+) 0%" +/ &((+/ +,"
Temperature
Compensation
Calibrations
%" ,.+ "!1."/ 0%0 #+((+3 ((+3 5+1 0+ -1& '(5 +),"*/0" 0%" (&.0&+*
+# 0%" +/ &((+/ +," #+. *5 "40".*( 0"),".01." 2.&0&+*/ %&/ "*/1."/ 0%"
)+/0 1.0" )"/1.")"*0/ + 0"/0 "-1&,)"*0 &/ ."-1&."! 0+ ,".#+.)
0%"/" ,.+ "!1."/
,0&)1) &*/0.1)"*0 ,".#+.)* " !","*!/ +* 0%" ." +))"*!"!
)&*10" )&*&)1) 3.)81, 0&)" ,.&+. 0+ ,".#+.)&*$ 0%" #+((+3&*$
(&.0&+* .+10&*"/ (( (&.0&+* .+10&*"/ ."-1&." /1 "//#1(
+),("0&+* *+ 7#&("! )"//$"
%" "),".01." +),"*/0&+* (&.0&+*/ ##" 0 0%" 1. 5 +#
0%" !&/,(5 /5/0") 0%"."#+." 0%"5 /%+1(! +*(5 " ,".#+.)"! 5 -1(&#&"! 0" %*& &*
Horizontal Sweep Path
."// 0%" AUTOSET 100+*
."// 0%" UTILITY 100+* *! /"(" 0 CAL #.+) 0%" )&* )"*1
"(" 0 Horizontal Sweep Path #.+) 0%" /1 )"*1 &*&0&0&*$ 0%" .+10&*"
%" Horizontal Sweep Path .+10&*" 0'"/ +10 /" +*!/ 0+ +)8
,("0" &0/ &*&0&( (&.0&+*/ * " +),("0" 03+ !+0/ ." !&/,(5"! %"
!&/,(5"! !+0/ ." 1/"! #+. 0%" *"40 %+.&6+*0( (&.0&+* /0",/
NOTE
The following steps use both the General Purpose Knob and the
TOGGLE button to make adjustments. The General Purpose Knob
performs two functions: to adjust gain and centering. Pressing the
TOGGLE button selects the function of the General Purpose Knob.
/" +)&*0&+* +# 0%" TOGGLE 100+* *! 0%" "*".( 1.,+/"
*+ 0+ ,+/&0&+* 0%" 03+ !+0/ "&$%0 !&2&/&+*/ ,.0 "*0"."! %+.&6+*0((5
/"" &$1." 8 TAS 455 and TAS 465 Service Manual
4Ć9
Brief Performance Checks
Gain and Position
Adjustment
Dots Eight Divisions
Apart, Centered
Horizontally
Toggle Between
Gain and Position
Adjustment
Figure 4Ć3:ăHorizontal Adjustments (One)
' Done *" +#( ) ' $$%#$%' &$ +
" (& #!"'#" # ' TOGGLE (''#" " ' "% (%$#& "# '# $#&'#" ' '*# #'& ' )&#"& $%' "'%
#%,#"' + & (% -
' Done *" +#( ) ' $$%#$%' &$ +
" #' & "#* &$ +
& #!"'#" # ' TOGGLE (''#" " ' "% (%$#&
"# '# #%,#"' + "'% ' &" #' ' ' "'% # ' &%"
& (%-
#"'"( '# $%&& ' TOGGLE (''#" " (&'" ' #' '# "'%
&%" *' ' "% (%$#& "# ("' ' #' &'+& #%,#"' +
"'% * $%&&" ' TOGGLE (''#"
Position
Adjustment
Center Dot
Horizontally
Toggle Dot Position
Figure 4Ć4:ăHorizontal Adjustments (Two)
4Ć10
Performance Verification
Brief Performance Checks
") Done ,$ .%* + ) &&'%&' ) (&".
,% +') " " $( ' $%, (&".
Gain and Position
Adjustment
Lines Eight Divisions
Apart, Centered
Horizontally
Toggle Between
Gain and Position
Adjustment
Figure 4Ć5:ăHorizontal Adjustments (Three)
( %# $) %$ % ) TOGGLE *))%$ $ ) $'" *'&%(
$% )% &%( ) %$ ) ),% " $( ) + ( %$( &') $)' %' /%$)"".
( *' 0 ") Done ,$ .%* + ) &&'%&' ) (&".
pass %' failed ())*( &&'( %$ ) ('$
") Done )% - ) ) '%*) $ (&". $ Calibration Finished
#((
Vertical Signal Path
'(( ) AUTOSET *))%$
'(( ) UTILITY *))%$ $ (") CAL '%# ) # $ #$*
") Vertical Signal Path '%# ) (* #$* $ ) ) $ ) '%*) $
#%+ $. $&*) ( $"( '%# ) %( ""%(%&
") Done
Vertical Signal Path '%*) $ )!( %*) %$ # $*) )% %#&")
$ $ ( pass %' failed ())*( , "" &&' %$ ) ('$
'(( Done )% - ) ) '%*) $ (&". $ Calibration Finished #(0
(
'(( ) CLEAR MENU *))%$
TAS 455 and TAS 465 Service Manual
4Ć11
Brief Performance Checks
4Ć12
Performance Verification
Performance Tests
!* *,*+!&% &%+!%* ')&,)* +& -)!0 + + + %#& *!##&*&'* ')&)$ * .))%+
% ')&,)* ) ))% !% + ) #&!# )&,'!%* $ % 0 " ## + )+)!*+!*
+ + ) *!%+ * " !% +!&% "
)+)!*+!* '') !% boldface +0' ,%) !%
+!&% * ')&,)* # + &%!% #-# ')&-! 0 + %
!% + !* *+!&%
Performance Tests
Prerequisites
+*+* !% + !* *,*+!&% &$')!* % /+%*!- -#! &%!)$1
+!&% & ')&)$% % ,%+!&%#!+0 . % + &##&.!% )(,!)1
$%+* ) $+
H
!%+ $,*+ !%*+## &% + &*!##&*&'
H
"% * &. %& !#,)*
H
&, $,*+ - &$'#+ + ! !%%!% &% ' 1
H
&*!##&*&' $,*+ - % &')+!% .)$1,' ')!& & + #*+
$!%,+* + % $!%+ +$')+,) +.% _ % _ H
+ + INTENSITY % READOUT &%+)&#* &) %&$!%# -!.!% #-#*
H
+ + #0 *.' !%+%*!+0 +& Intensity Delay > Main !% + +!#!+0
&%!,) $%,
Related Information 2 ! + + *+)+ &% ' 1 0&, ) %&+ $!#!) .!+ &')+!% + !* &*!##&*&' )
+!&% &) ')&)$!% + * ')&,)*
Equipment Required
!
!%
* ')&,)* ,* /+)%# +)# *!%# *&,)* +& !)+#0 "
.))%+ )+)!*+!* # 1 #!*+* + )(,!) +*+ (,!'$%+
TAS 455 and TAS 465 Service Manual
4Ć13
Performance Tests
TableĂ4Ć1:ăRequired Test Equipment
Item Number and
Description
Minimum Requirements
Example
Purpose
1
Attenuator, 5X1
Ratio: 5X; Impedance 50 W;
Connectors: female BNC input,
male BNC output
Tektronix part number
011-0060-02
Signal attenuation
2
Attenuator, 10X
Ratio: 10X; Impedance 50 W;
Connectors: female BNC input,
male BNC output
Tektronix part number
011-0059-02
Signal attenuation
3
Termination,
50 W (two reĆ
quired)
Impedance 50 W; Connectors:
female BNC input, male BNC
output
Tektronix part number
011-0049-01
Signal
interconnection
4
Termination,
75 W
Impedance 75 W; Connectors:
female BNC input, male BNC
output
Tektronix part number
011-0102-01
Signal
interconnection,
video
5
Cable, Precision
Coaxial
50 W, 36 in, maleĆtoĆmale BNC
connectors
Tektronix part number
012-0482-00
Signal
interconnection
6
Cable, Coaxial
75 W, 36 in, maleĆtoĆmale BNC
connectors
Tektronix part number
012-1338-00
Signal
interconnection,
video
7
Coupler, DualĆ
Input
FemaleĆBNCĆtoĆdualĆmaleĆBNC
Tektronix part number
067Ć0525Ć02
Signal
interconnection
8
Generator, LevĆ
eled Sine Wave
200 kHz to 250 MHz; Variable
amplitude from 5ĂmV to 4 VpĆp
into 50 W
Trigger and
bandwidth checks
9
Generator, Time
Mark
Variable marker frequency from
10 ms to 10 ns; accuracy within
25 ppm
Wavetek 9100 Universal
Calibration System with
Oscilloscope Calibration
Module (Option 250)
Timing accuracy
checks
10 Generator, Pulse
High Amplitude pulse with variable
amplitude of 60 V to 100 V
Gain accuracy
checks
11 Generator, DC
Calibration
DC voltage levels from 100 mV to
10 V
Gain accuracy
checks
12 Probe, 10X, inĆ
cluded with this
instrument
Standard accessory probe
TEKTRONIX P6109B
Signal
interconnection
13 Digital
Multimeter
DC voltage to 10ĂV
TEKTRONIX DMĂ2510
Power Supply
Adjustment
14 Generator, Video
Signal
Provides NTSC compatible
outputs
TEKTRONIX TSG 100
Video trigger check
15 Adjustment Tool1
0.1 inch hex on both ends
GC Electronics #8606
Internal adjustments
1 This
4Ć14
item is used only when performing the Adjustment Procedures.
Performance Verification
Performance Tests
Vertical System
Checks
'$0$ ./-"$#2/$0 "'$") 1'-0$ "' / "1$/(01("0 1' 1 /$* 1$ 1- 1'$ 3$/1(" *
0601$+ ,# /$ *(01$# 0 "'$")$# 2,#$/ Warranted Characteristics (,
$"1(-, Specifications.
Check DC Gain and Voltage Measurement Accuracy
Equipment Required: ,$ .2*0$ &$,$/ 1-/ (1$+ ,# -,$ ./$"(0(-,
"- 5( * " !*$ (1$+ (0.* 6 1'$ "' ,,$* 1- !$ 3$/(%($# 12/,(,& ** -1'$/0 -%%
/$00 1'$ AUTOSET !211-,
$1 1'$ 0$"#(3 0" *$ 1- 0
/$00 1'$ TRIGGER MENU !211-, ,# 0$1 CPLG 1- Noise Reject
/$00 1'$ CURSOR !211-, ,# 0$1 Volt 1- On
/$00 1'$ VERTICAL MENU !211-, ,# + )$ 1'$ %-**-4(,& 0$*$"1(-,0
H
$1 CPLG 1- DC
H
$1 BW 1- 20 MHz
$1 1'$ 3-*10#(3 0" *$ 1-
+
-0(1(-, 1'$ 1/ "$ 1'/$$ #(3(0(-,0 !$*-4 1'$ "$,1$/ '-/(7-,1 * &/ 1("2*$
*(,$
-,,$"1 1'$ 01 ,# /# +.*(12#$ -21.21 -% 1'$ .2*0$ &$,$/ 1-/ 1- 1'$
(,.21 -% 1'$ "' ,,$* 1- !$ 3$/(%($# 0 0'-4, (, (&2/$ 8 Pulse Generator
Precision Cable
Figure 4Ć6:ăGain and Voltage Test Setup
$1 1'$ .2*0$ &$,$/ 1-/ %-/ + +.*(12#$ -21.21
0$ 1'$ $,$/ * 2/.-0$ ,-! ,# TOGGLE !211-, 1- ./$"(0$*6 *(&,
1'$ "2/0-/0 1- 1'$ 0(&, * .$ )0
'$") 1'$ (0.* 6$# (&, * ""2/ "6 ,# -*10 $ #-21 ""2/ "6 4'(*$
0$11(,& 1'$ -*10(3 " *$ ,# 1'$ ,.21 +.*(12#$ &(3$, (, !*$ 8 TAS 455 and TAS 465 Service Manual
4Ć15
Performance Tests
TableĂ4Ć2:ăDC Gain and Delta Volts Accuracy
Volts/Div
Scale
Input
Amplitude
Displayed
Signal Accuracy
Delta Volts
Readout Accuracy
&
&
,( #.
& ,( &
&
&
,( #.
& ,( &
&
&
,( #.
& ,( &
&
,( #.
& ,( &
&
,( #.
& ,( &
&
,( #.
& ,( &
,( #.
,( ,-*' ," .(%,+#. +% ,(
&)%#,- (-,)-,
& ' +, ," )-%+ !'*,(* (* &
*++ ," VERTICAL MENU -,,(' ' +, VAR ,( On
"$ ,", *(,,#'! ," '*% -*)(+ '( (-',*%($/#+ *3
-+ ," #+)%1 +#!'% &)%#,- ,( ,/( #.#+#('+ (* %++ , VAR
,( Off
#+('', ," ,+, +,-) *(& ," (+#%%(+()
), ,"#+ )*(-* -',#% 1(- ". .*# # %% #')-, "''%+
*++ ," CURSOR -,,(' ' +, Volt ,( Off
Check Trigger Level Accuracy
Equipment Required: ' %#*,#(' !'*,(* #,& ' ('
)*#+#(' (0#% % #,& #+)%1 "''% ,-*'#'! %% (,"*+ ( *++ ," AUTOSET -,,('
, ," +#. +% ,( +
*++ ," TRIGGER MENU -,,(' ' &$ ," (%%(/#'! +%,#('+
H
, CPLG ,( DC
H
, SLOPE ,( Rising
*++ ," VERTICAL MENU -,,(' ' &$ ," (%%(/#'! +%,#('+
H
, CPLG ,( DC
H
, BW ,( 20 MHz
, ," .(%,+#. +% ,( &
(+#,#(' ," ,* ,"* #.#+#('+ %(/ ," ',* "(*#2(',% !*,#-%
%#'
4Ć16
Performance Verification
Performance Tests
'&&+ +! $")+"'& &)+') +' +! CH 1 "&(,+ * *!'.& "&
" ,) 1 DC Calibration Generator
Precision Cable
Figure 4Ć7:ăTrigger Level Test Setup
+ +! $")+"'& &)+') ') % ',+(,+
)** +! SET LEVEL TO 50% ,++'&
!# +!+ +! )"
+' %
) -$ ,)0 )',+ "* "& +! )& ' %
)** +! TRIGGER MENU ,++'& & *+ SLOPE +' Falling
)** +! SET LEVEL TO 50% ,++'&
!# +!+ +! )"
+' %
) -$ ,)0 )',+ "* "& +! )& ' %
)** +! MAIN/DELAY SELECT ,++'& "*($0"& +! $0 +)"
%&,
)
+ MODE +' Runs After & SRC +' Ch1
)** +! SET LEVEL TO 50% ,++'&
!# +!+ +! )"
+' %
) -$ ,)0 )',+ "* "& +! )& ' %
"*'&&+ +! +*+ *+,( )'% +! '*"$$'*'(
)** +! MAIN/DELAY SELECT ,++'& & *+ SLOPE +' Rising
)** +! HORIZONTAL MENU ,++'& & *+ DELAY +' Off
Check DC Coupling Bandwidth
Equipment Required: & $-$ *"& .- &)+') "+% '& ()"1
*"'& '/"$ $ "+% & '& W +)%"&+"'& "+% "*($0 +! !&&$ +' -)"" +,)&"& $$ '+!)* '
'&&+ +! ',+(,+ ' +! *"& .- &)+') +' +! !&&$ +' -)"" * *!'.& "& " ,) 1
TAS 455 and TAS 465 Service Manual
4Ć17
Performance Tests
Sine Wave Generator
Precision Cable
50 Termination
Figure 4Ć8:ăBandwidth Test Setup
+,, -! AUTOSET .--('
- -! /(%-,"/ ,% -(
&
- -! ,"/ ,% -( ,
- -! ,"' 0/ '+-(+ (+ $3 ++' +*.'2 ' #.,-! &)%"-. (+ ,"1 "/","(' ",)%2
+,, -! TRIGGER MENU .--(' ' ,- CPLG -( Noise Reject
, -! (%%(0"' ,.,-), -( ' -! ,--"' , ' %"&"-, "/' "'
% 4 -( ('"+& -! '0"-! ( -! "').- !''%,
- -! /(%-,"/ ,% , "'"-
- -! ," '% '+-(+ (+ -! ,)"" &)%"-. - -! ++'
+*.'2
!"% ('"+&"' -! ",)%2 &)%"-. +&"', +-+ -!' -!
&"'"&.& '.&+ ( "/","(', "'+, -! ," '% '+-(+ +4
*.'2 -( 3 (+ 3 )'"' (' -! "',-+.&'- &(%
TableĂ4Ć3:ăDC Coupled Bandwidth
Display Amplitude
Volts/Div
Scale
4Ć18
50 kHz
Reference Amplitude
TAS 455
To 60 MHz
TAS 465
To 100 MHz
&
"/","('
"/","('
"/","('
&
"/","('
"/","('
"/","('
&
"/","('
"/","('
"/","('
&
"/","('
"/","('
"/","('
&
"/","('
"/","('
"/","('
&
"/","('
"/","('
"/","('
"/","('
"/","('
"/","('
Performance Verification
Performance Tests
#+('', ," ,+, +,-) *(& ," (+#%%(+()
), ,"#+ )*(-* -',#% %% #')-, "''%+ * .*# #
Check XĆAxis Gain
Equipment Required: ' )-%+ !'*,(* #,& ' (' )*#+#('
(0#% % #,& #+)%1 "''% ,-*'#'! %% (,"*+ ( ('', ," (-,)-, ( ," )-%+ !'*,(* ,( ," CH 1 #')-, + +"(/'
#!-* 3
Pulse Generator
Precision Cable
Figure 4Ć9:ăXĆAxis Gain Test Setup
, ," (-,)-, ( ," )-%+ %#*,#(' !'*,(* (* &
*++ ," AUTOSET -,,('
, ," .(%,+#. +% ,( &
',* ," #+)%1 -+#'! ," .*,#% POSITION (',*(%
*++ ," HORIZONTAL MENU -,,(' ' +, XY ,( On
"$ ,", ," &)%#,- ( ," 30#+ +#!'% #+ ,( #.#+#('+
, XY ,( Off
#+('', ," ,+, +,-) *(& ," (+#%%(+()
Horizontal System
Checks
"+ )*(-*+ "$ ,"(+ "*,*#+,#+ ,", *%, ,( ," "(*#2(',%
+1+,& ' * %#+, + "$ -'* Warranted Characteristics #'
,#(' Specifications
Check Time Base and Time Cursor Accuracy
Equipment Required: ' ,#& &*$* !'*,(* #,& (' )*#+#('
(0#% % #,& ' (' W ,*&#',#(' #,& #+)%1 "''% ,-*'#'! %% (,"*+ ( TAS 455 and TAS 465 Service Manual
4Ć19
Performance Tests
&%%* * &+*'+* & * *!$ $("( %(*&( *& * CH 1 !%'+* )
) &-% !% !+( 1
Time Mark Generator
50 Termination
Precision Cable
Figure 4Ć10:ăTiming Test Setup
* * &+*'+* & * %(*&( &( %) $("()
()) * AUTOSET +**&%
* * )!, )# *& %)
* * ,&#*)!, )# *& $
%*( * *!$ $(" !)'#. ,(*!##.
()) * CURSOR +**&% % )* TIME *& On
&)!*!&% * (!)!% & * )&% *!$ $(" *& * )&% ,(*!#
(*!+# #!%
#!% * *!, +()&( *& * )&% *!$ $(" * * '&!%* * (!)!%
!%*()*) * %*( &(!/&%*# (*!+# #!% +)!% * %(#
+('&) %&
()) * TOGGLE +**&% % #!% * )&% +()&( *& * *%* *!$
$(" * * '&!%* * (!)!% !%*()*) * %*( &(!/&%*#
(*!+# #!% +)!% * %(# +('&) %&
" * * * !$1$(" *& (*!+# +(. % * !$ +()&(
&+* +(. &,( * %*( ! * !,!)!&%) ( -!* !% * #!$!*)
) &-% &( !, # #!)* !% #1
TableĂ4Ć4:ăTime Base and Cursor Accuracies (Mag Off)
4Ć20
TimeĆmark to
Graticule Accuracy
Time Cursor
Readout Accuracy
2nd and 10th
Time Marks
Sec/Div Scale
(Mag Off)
Time Mark
Setting
Over Center
8 Divisions
%)
%)
0 !,!)!&%
%)
%)
0 !,!)!&%
%) *& %)
%)
)
0 !,!)!&%
%) *& %)
%) *& %)
Performance Verification
Performance Tests
TableĂ4Ć4:ăTime Base and Cursor Accuracies (Mag Off) (Cont.)
TimeĆmark to
Graticule Accuracy
Time Cursor
Readout Accuracy
2nd and 10th
Time Marks
Sec/Div Scale
(Mag Off)
Time Mark
Setting
Over Center
8 Divisions
%)
)
/ !,!)!&%
%)
)
/ !,!)!&%
) *& )
)
)
/ !,!)!&%
) *& )
)
)
/ !,!)!&%
) *& )
)
)
/ !,!)!&%
) *& )
)
)
/ !,!)!&%
) *& )
)
)
/ !,!)!&%
)
)
/ !,!)!&%
) *& )
)
$)
/ !,!)!&%
) *& )
)
$)
/ !,!)!&%
)
$)
/ !,!)!&%
$) *&
$)
$)
/ !,!)!&%
$) *& $)
$)
$)
/ !,!)!&%
$) *& $)
$)
$)
/ !,!)!&%
$) *& $)
) *& ) *& $) *& )
)
$)
$)
* TIME *& Off
* * *!$ $(" %(*&( *& %)
* * $!% )!, )# *& %)
()) * HORIZONTAL MENU +**&% % )* DELAY *& On % MAIN
*& Off
* * #. )!, )# *& %)
* * #. *!$ *&
%) +)!% * %(# +('&) %&
&)!*!&% * & * )&% *!$ $(" *& * )&% ,(*!#
(*!+# #!%
" * * * !$ (" *& (*!+# +(. &,( * %*( ! *
!,!)!&%) ( -!* !% * #!$!*) ) &-% &( )!, )# #!)* !%
# 0 !)(( * !$ +()&( &+* +(. &#+$%
* MAIN *& On
* * $!% )!, )# *& %)
* MAIN *& Off
TAS 455 and TAS 465 Service Manual
4Ć21
Performance Tests
)** +! MAG ,++'& +,)&"& % &""+"'& '&
+ +! +"% %)# &)+') ')
&* %)#)*
+ +! -'$+*"- *$ +' %
!# +!+ +! +"%"& ,)"* + +! "&&"& %"$ & & '
*.( '-) +! &+) " !+ "-"*"'&* ) ."+!"& +! $"%"+* *!'.& ')
! ' +! *"- *$* "-& "& $ 2 /$, +! ")*+ & $*+
"- "-"*"'&* ' +! % &"" *.( ') ,)0 %*,)%&+*
TableĂ4Ć5:ăTime Base Accuracy (Mag On)
Sec/Div Scale
(Mag On)
1
Time Marker
Setting
Time Mark to Graticule
Over Center 8 Divisions
&*
&*1
1
"-"*"'&2
&*
&*1
1
"-"*"'&
&*
&*
1
"-"*"'&
&*
m*
1
"-"*"'&
m*
%*
1
"-"*"'&
Change the volts/div scale as necessary to maintain vertical amplitude.
this setting, two cycles of the signal are displayed for every five horizontal divisions.
2 At
+ MAIN +' On & DELAY +' Off
+ +! *"- *$ +'
&*
+ +! +"% %)# &)+') ')
&* %)#)*
!# +!+ +! +"%"& ,)"* + +! "&&"& %"$ & & '
*.( '-) +! &+) " !+ "-"*"'&* ) ."+!"& +! $"%"+* *!'.& ')
! "- $ "-& "& $ 2 /$, +! ")*+ & $*+ "-
"-"*"'&* ' +! % &"" *.( ') ,)0 %*,)%&+*
)** +! MAG ,++'& +,)&"& % &""+"'& '
Check Dual Delay Accuracy
Equipment Required: & +"% %)#) &)+') "+% '& ()"*"'&
'/"$ $ "+% & '& W +)%"&+"'& "+% "*($0 !&&$ +,)&"& $$ '+!)* '
'&&+ +! ',+(,+ ' +! +"% %)#) &)+') +' +! CH 1 "&(,+ *
*!'.& "& " ,) 2
4Ć22
Performance Verification
Performance Tests
Time Mark Generator
Precision Cable
50 Termination
Figure 4Ć11:ăDual Delay Test Setup
- -" ).-*.- ) -" -#' '+%+ !(+-)+ )+ ', '+%+,
+,, -" AUTOSET .--)(
- -" ,#/ ,& -) ,
- -" /)&-,#/ ,& -) '
),#-#)( -" -#' '+%+ #,*&1 -) -" .**+ "& ) -" !+-#.& (
&#!( -" #+,- -#' '+%+ -) -" ,)( /+-#& !+-#.& &#(
+,, -" TRIGGER MENU .--)( ( -"( -" MAIN/DELAY SELECT
.--)(
- MODE -) Runs After
- -" &1 ,#/ ,& -) ,
+,, HORIZONTAL MENU
&- TRCSEP ( *),#-#)( -" &1 -#' '+%+ #,*&1 -) -"
&)0+ "& ) -" !+-#.& .,#(! -" (+& .+*), ()
&- DELAY
,#(! -" (+& .+*), () *),#-#)( -" #(-(,# # 2)( )( -"
'#( ,0* -) -" ,)( -#' '+%+ -"( ,&#!"-&1 $.,- -" (+&
.+*), () .(-#& -" &1 ,0* -#' '+%+ #, - -" !+-#.&
(-+
+,, -" UTILITY .--)( ( ,&- CONFIG +)' -" '#( '(.
&- MORE .(-#& 1). ( ,&- Dual Delay Enabled +)' -" ,.
'(.
+,, -" CURSOR .--)( ( ,- TIME -) On
,#(! -" (+& .+*), () *),#-#)( -" ,)( #(-(,# # 2)(
)( -" '#( ,0* -) -" -"#+ -#' '+%+ -"( ,&#!"-&1 $.,- -"
(+& .+*), () -) ,.*+#'*), -" &1 ,0* -#' '+%+,
- -" !+-#.& (-+ +,, -" TOGGLE .--)( -) ,,#!( -" (+&
.+*), () -) -" ,)( #(-(,# # 2)( # (,,+1
"% -" .& &1 .+1 #(! )+ " -#' '+%+ *#+ &#,-
#( & 3 TAS 455 and TAS 465 Service Manual
4Ć23
Performance Tests
TableĂ4Ć6:ă500 s Dual Delay Accuracy
Time Markers Intensified
Dual Delay Accuracy
Reading Limits
#!-," ," 1&'/"
m0 1-
m0
#!-," ," $-2/1&
m0 1- +0
#!-," ," 0'51&
+0 1- +0
#!-," ," 1#,1&
+0 1- +0
/#00 1&# MAIN/DELAY SELECT 211-, ," 0#1 1&# +', 0#!"'3 0!*#
1- ,0
/#00 1&# MAIN/DELAY SELECT 211-, ," 0#1 1&# "#*6#" 0#!"'3
0!*# 1- ,0
#1 1&# 1'+# +/) %#,#/1-/ $-/ m0 +/)#/0
0',% 1&# #,#/* 2/.-0# ,- .-0'1'-, 1&# 0#!-," ',1#,0'$'#" 7-,#
-, 1&# +', 04##. 1- 1&# 1#,1& 1'+# +/)#/ 1&#, 0*'%&1*6 "(201 1&#
#,#/* 2/.-0# ,- 1- 02.#/'+.-0# 1&# "#*6#" 04##. 1'+# +/)#/0
1 1&# %/1'!2*# !#,1#/
&#!) 1&# "2* "#*6 !!2/!6 '+# /#"',% '0 ', 1&# /,%# -$
m0 1- m0
/#00 1&# CURSOR 211-, ," 0#1 TIME 1- Off
/#00 1&# UTILITY 211-, ," 0#*#!1 Dual Delay Disabled
/#00 1&# HORIZONTAL MENU 211-, ," 0#1 DELAY 1- Off
'0!-,,#!1 1&# 1#01 0#12. $/-+ 1&# -0!'**-0!-.#
Trigger System
Checks
&#0# ./-!#"2/#0 !&#!) 1&-0# !&/!1#/'01'!0 1&1 /#*1# 1- 1&# 1/'%%#/
0601#+ ," /# *'01#" 0 !&#!)#" 2,"#/ Warranted Characteristics ',
#!1'-, Specifications
Check Trigger Sensitivity
Equipment Required: ,# 0',# 43# %#,#/1-/ '1#+ -,# 11#,21-/
'1#+ -,# ./#!'0'-, !-5'* ! *# '1#+ -,# "2*8',.21 !-2.*#/
'1#+ ," 14- W 1#/+',1'-,0 '1#+ Low Frequency 9 &# $-**-4',% 01#.0 !&#!) 1/'%%#/ 0#,0'1'3'16 1
7
'0.*6 !&,,#* 12/,',% ** -1&#/0 -$$
-,,#!1 1&# -21.21 -$ 1&# 0',# 43# %#,#/1-/ 1- 1&# CH 1 ,"
EXT TRIG ',.210 0 0&-4, ', '%2/# 8 4Ć24
Performance Verification
Performance Tests
Sine Wave Generator
50 Terminations
Precision Cable
DualĆinput
Coupler
Figure 4Ć12:ăTrigger Sensitivity Test Setup (One)
, , *)-&0 ' , +!& /. &*,'* ,' 1
*++ , AUTOSET -,,'&
, , .'$,+!. +$ ,' %
, , +!. +$ ,' &+
*++ , VERTICAL MENU -,,'& & +, CPLG ,' DC
*++ , TRIGGER MENU -,,'& & %# , '$$'/!& +$,!'&+
*'% , %!& ,*!* %&-
H
, MODE ,' Auto
H
, SRC ,' Ch1
H
, CPLG ,' DC
H
, SLOPE ,' Rising
*++ , MAIN/DELAY SELECT -,,'& & %# , '$$'/!& +$2
,!'&+ *'% , $0 ,*!* %&-
H
, MODE ,' Runs After
H
, SRC ,' Ch1
H
, CPLG ,' DC
H
, SLOPE ,' Rising
, , $0 +!. +$ ,' &+
*++ , HORIZONTAL MENU -,,'& & +$, DELAY
, , $0 ,!% ,' &+ -+!& , &*$ -*('+ &'
, DELAY ,' Off
"-+, , +!& /. &*,'* %($!,- '* , * !.!+!'& !+($0
,,&-,'* ,' , ,+, +,-( + + '/& !& !-* 2
TAS 455 and TAS 465 Service Manual
4Ć25
Performance Tests
Sine Wave Generator
50 Terminations
Precision Cable
10X Attenuator
DualĆinput
Coupler
Figure 4Ć13:ăTrigger Sensitivity Test Setup (Two)
'(( ) SET LEVEL TO 50% *))$# # $#'" ()! (%!-
'(( ) TRIGGER MENU *))$# # () SLOPE )$ Falling
'(( ) SET LEVEL TO 50% *))$# # $#'" ()! (%!-
'(( ) HORIZONTAL MENU *))$# # () DELAY )$ On
!) TRCSEP # %$()$# ) !- (,% !$, ) "# (,%
*(# ) #'! *'%$( #$
'(( ) TRIGGER MENU *))$# # () MODE )$ Trig After
'(( ) SET LEVEL TO 50% *))$# # $#'" ()! !-
(,% (%!-
) SLOPE )$ Falling
'(( ) SET LEVEL TO 50% *))$# # $#'" ()! !-
(,% (%!-
'(( ) HORIZONTAL MENU *))$# # () DELAY )$ Off
) ) +$!)(+ (! )$ "
) ) (# ,+ #')$' )$ .
) ) (+ (! )$ (
*() ) (# ,+ #')$' "%!)* $' +($# (%!-
) ) (# ,+ #')$' '&*#- )$ .
) ) "# (+ (! )$ #(
'(( ) TRIGGER MENU *))$# # () SRC )$ EXT <1>
'(( ) SET LEVEL TO 50% *))$# # $#'" ()! (%!-
4Ć26
Performance Verification
Performance Tests
High Frequency 4 ! (%%(0"' ,-), !$ -+"
2 (+ 2 + ,',"-"/"-1 -
&(/ -! --'.-(+ +(& -! -,- ,-.) (''- , ,!(0' "'
" .+ 3 Sine Wave Generator
50 Terminations
DualĆinput
Coupler
Precision Cable
Figure 4Ć14:ăTrigger Sensitivity Test Setup (Three)
- -! /(%-,"/ ,% -( #.,- -! ,"' 0/ '+-(+ &)%"-. (+ (' "/","(' ",)%1 2
- -! ,"' 0/ '+-(+ +*.'1 , (%%(0,
H
4 2
H
4 2
+,, -! MAG .--('
- SRC -( EXT <10>
+,, -! SET LEVEL TO 50% .--(' ' ('"+& ,-% ",)%1
--'.-(+ -( -! -,- ,-.) , ,!(0' "' " .+ 3 Sine Wave Generator
50 Terminations
Precision Cable
10X Attenuator
DualĆinput
Coupler
Figure 4Ć15:ăTrigger Sensitivity Test Setup (Four)
TAS 455 and TAS 465 Service Manual
4Ć27
Performance Tests
- -" /)&-,#/ ,& -) '
$.,- -" ,#( 0/ !(+-)+ '*&#-. )+ )( #/#,#)( #,*&2
- SRC -) Ch1
+,, -" SET LEVEL TO 50% .--)( ( )( #+' ,-& #,*&2
- SLOPE -) Rising
+,, -" SET LEVEL TO 50% .--)( ( )( #+' ,-& #,*&2
+,, -" MAIN/DELAY SELECT .--)( ,&-#(! &2
+,, -" SET LEVEL TO 50% .--)( ( )( #+' ,-& &2
,0* #,*&2 , -" )&&)0#(! ()-
NOTE
A slight adjustment of the delay time may be necessary to obtain a
stable delayed sweep display. Press the Horizontal Menu button
and adjust the delay time using the General Purpose Knob. Press
the Trigger Menu button after confirming a stable display.
- SLOPE -) Rising
+,, -" SET LEVEL TO 50% .--)( ( )( #+' ,-& &2
,0* #,*&2
NOTE
A slight adjustment of the delay time may be necessary to obtain a
stable delayed sweep display. Press the Horizontal Menu button
and adjust the delay time using the General Purpose Knob.
+,, -" HORIZONTAL MENU .--)( ( ,- DELAY -) Off
#,)((- -" -,- ,-.* +)' -" ),#&&),)*
Video Trigger Sensitivity
" )&&)0#(! ,-*, "% -" /#) -+#!!+ ,(,#-#/#-2
Equipment Required: ( &/#,#)( ,#!(& !(+-)+ #-' )(
W -+'#(-#)( #-' ( )( W )1#& & #-' #,*&2 "((& -.+(#(! && )-"+, ) )((- -" )'*),#- ,2( ).-*.- ) -" -&/#,#)( ,#!(& !(+-)+ -)
-" CH 1 #(*.- , ,")0( #( #!.+ 3 4Ć28
Performance Verification
Performance Tests
Television Signal Generator
75 Cable
75 Termination
Figure 4Ć16:ăVideo Trigger Test Setup
#$$ % AUTOSET &%%! % % '!%$' $ %! % % $' $ %! $
#$$ % UTILITY &%%! $% CONFIG
% MORE & % )!& $% Video Sync Negative #! % $&
&
#$$ % TRIGGER MENU &%%! % !!( $%! $
H
% MODE %! Video Field <odd>
H
% SLOPE %! Falling
! # $% $") ! % '! % MODE %! Video Field <even>
! # $% $") ! % '! $!
TAS 455 and TAS 465 Service Manual
% % %$% $%&" #! % !$!$!"
4Ć29
4Ć30
Adjustment Procedures
* *+ &% &%+ %* %&)$+ &% % +& !,*+ + %#& * ##&*&'*
%
Description 2 Adjustment Procedures ) - %+& +.& ')+*
H
%)# %&)$+ &% &,+ !,*+ % + &* ##&*&'
H
) ++% ')&,)* &) # )+ % + &* ##&*&'
Purpose 2 * +* ')&,)* +& )+,)% + &* ##&*&' +& &%&)1
$% . + +* Warranted Characteristics * # *+ % + &% SpecificaĆ
tions / #*& &'+ $ 0 + ')&)$% & + &* ##&*&'
* ')&,)* ) not )(, ) +& -) / + &* ##&*&' &%&)$* . +
+* .))%+ )+) *+ * )&)$% -) + &% ')&,)* ) &,%
% + &% Performance Verification
Adjustment Interval 2 * %)# ),# ')&)$ +* !,*+$%+* +)
-)/ &,)* & &')+ &% &) &% /) ,* %)(,%+#/
Requirements for
Performance
&) /&, ')&)$ + * ')&,) /&, % +& )** + &##&. %
)(, )$%+*
Personnel
* ')&,) * &%#/ +& ')&)$ / +) % *)- +% %*
Access to Adjustments
%+ $,*+ )$&- +& ')&)$ + !,*+$%+ ')&,) ) +&
+ &% Maintenance, &) ')&,)* +& )$&- + %+ !,*+1
$%+ ')&,)* $" ))%* +& !,*+$%+* #&+ &% %+)%# ), +
&)* ,) 1 *&.* + #&+ &% & &) . + !,*+$%+* % & + * *+ &% &%+ %* ,)* ++ *&. + #&+ &% & !,*+1
$%+ &) ), + &)
WarmĆUp Period
* &* ##&*&' )(, )* $ %,+ .)$1,' ') & % _ +& _ %- )&%$%+ &) ')&)$ % + * !,*+$%+ ')&,) !,*+$%+*
')&)$ &) + &')+ % +$')+,) * *+ # 0 $/ ,* ))&)*
% ')&)$%
TAS 455 and TAS 465 Service Manual
5Ć1
Adjustment Procedures
Display Driver board
Analog board
Figure 5Ć1:ăLocation of Boards for Adjustments
Equipment Required
" " %! ! " ! " ! !
' ' ! ! ! !
"! " ! " Performing the
Adjustment
Procedures
$ ! # $! " ! " ! ! ! #" " !! " 5Ć2
Factory Horizontal Cal Factory Vertical Cal " !! "!
! ! !!& " ! "! " ! !' ! %! ! &" # !
!"! & !
"!
Adjustment Procedures
Adjustment Procedures
Complete Adjustment
)'*&. $/-.'(. )(-#-.- ) -+/( ) #(#0#/& $/-.'(.
-.*- *, ),' #( ." ),, -")1(
)1, /**&2 $/-.'(.
$/-.'(.
)1 ,+/(2 /.*/. )'*(-.#)(
.),2 ),#3)(.& &
.),2 ,.#& &
#!" ,+/(2 .* -*)(- $/-.'(.
..(/.), )'*(-.#)(
,.#& #( $/-.'(.
Partial Adjustment
" $/-.'(. ,)/,- &&)1 2)/ .) '% #(#0#/& $/-.'(.- ) ."
-.*- )/.&#( )0 ")10, /-/&&2 && $/-.'(. -.*- , ' ." #( ),'.#)( /(, Adjustment Dependencies .". )&&)1- ), *, ),'4
#(! ( #(#0#/& $/-.'(.
Adjustment Dependencies
)' $/-.'(.- *( )( ." -/-- /& *,#), )'*&.#)( ) ).",
$/-.'(.- (,&&2 ." *,)/,- -")/& *, ),' #( ." ),,
-")1( /(, Complete Adjustment )' $/-.'(.- ) (). *( )(
)'*&.#)( ) ).", $/-.'(.- & 4 &#-.- ." $/-.'(.- ( ."#,
*((#-
TableĂ5Ć1:ăAdjustments and Dependencies
Adjustment
Prior Completion Requirements
)1, /**&2
)(
$/-.'(.
)(
)1 ,+/(2 /.*/. )'4
*(-.#)(
)(
.),2 ),#3)(.& &
$/-.'(.
.),2 ,.#& &
)1 ,+/(2 /.*/. )'*(-.#)(
( .),2 ),#3)(.& &
#!" ,+/(2 .* -*)(-
.),2 ,.#& &
..(/.), )'*(-.#)(
)1 ,+/(2 /.*/. )'*(-.#)(
TAS 455 and TAS 465 Service Manual
5Ć3
Adjustment Procedures
TableĂ5Ć1:ăAdjustments and Dependencies (Cont.)
Adjustment
Instructions
Adjustment
Prior Completion Requirements
!'46+%#. #+0 &,756/'06
19 4'37'0%; 76276 1/2'05#=
6+10 #%614; !'46+%#. #. #0& 66'07=
#614 1/2'05#6+10
*' (1..19+0) +05647%6+105 9+.. )7+&' ;17 6*417)* '#%* 1( 6*' #&,756/'065
176.+0'& +0 Complete Adjustments. #%* #&,756/'06 5'%6+10 .+565 #.. 0'%'5=
5#4; '37+2/'06 4'37+4'& 61 2'4(14/ 6*' #&,756/'065
Power Supply Adjustment
(New Style Power Supply)
*+5 241%'&74' +5 2418+&'& 61 5722146 +05647/'065 9+6* 6*' 0'9'4 219'4
5722.; 1 #&,756/'06 +5 0'%'55#4; 9+6* 1.&'4 219'4 5722.+'5 '('4 61
2#)'< = (14 &'6#+.5
Equipment Required: 0' &+)+6#. /7.6+/'6'4 +6'/ #0& 10' #&,756/'06
611. +6'/ Adjustment Locations: *+5 241%'&74' 4'37+4'5 #&,756/'06 61 6*' 19'4
722.; $1#4& '' +)74' = 10 2#)' = (14 6*' .1%#6+10 1( 6*' #&,756=
/'06
100'%6 6*' &+)+6#. 81.6/'6'4 .19 .'#& 61 %*#55+5 )4170& #0& %100'%6
6*' 81.65 .'#& 61 6*' ! 5722.; " 10 6*' $1#4&
'#574' 6*' ! 5722.; ( 6*' 5722.; /'#574'5 (41/ ! 61
! 6*' 5722.; +5 #&,756'& 2412'4.; #0& ;17 /#; &+5%100'%6 6*'
81.6/'6'4
( 6*' 219'4 5722.; +5 016 9+6*+0 6*' .+/+65 52'%+(+'& +0 56'2 #&,756 6*'
! 216'06+1/'6'4 (14 # 81.6/'6'4 4'#&+0) 1( !
+5%100'%6 6*' 81.6/'6'4 (41/ 6*' +05647/'06
CRT Adjustments
Equipment Required: 0' 6+/' /#4-'4 )'0'4#614 +6'/ 10' 24'%+5+10
%1#:+#. %#$.' +6'/ #0& 10' W 6'4/+0#6+10 +6'/ Adjustment Locations: *+5 241%'&74' 4'37+4'5 #&,756/'065 61 6*' +52.#;
4+8'4 $1#4& '' +)74' = 10 2#)' = (14 6*' .1%#6+10 1( 6*' #&,756=
/'065
+5%100'%6 #.. 5+)0#. +02765 (41/ 6*' 15%+..15%12'
+52.#; %*#00'. 6740+0) #.. 16*'45 1((
4'55 6*' AUTOSET $76610
5Ć4
Adjustment Procedures
Adjustment Procedures
, ,! .(%,+". +% ,( &
, ,! +". +% ,(
+
*++ ,! VERTICAL MENU -,,(' ' &$ ,! (%%(/"' +%,"('+
*(& ,! &'-
H
, CPLG ,( GND
H
, BW ,( 20 MHz
(+","(' ,! !''% ,* ,( ,! ',* !(*"2(',% *,"-% %"' '
#-+, ,! FOCUS (',*(% (* /%%3"' "+)%1
#-+, ,! TRACE ROTATION (',*(% +*/3*".* #-+,&', ,( %" '
,! ,* /",! ,! ',* !(*"2(',% *,"-% %"'
*++ ,! HORIZONTAL MENU -,,(' ' +, XY ,( On
, ,! INTENSITY (',*(% -%%1 (-',*%($/"+ (
#-+, (' ,! "+)%1 *".* (* -',"% ,! (, "+ ."+"% ,!'
*3#-+, -',"% ,! (, #-+, 0,"' -"+!+
, XY ,( Off
('', ,! (-,)-, ( ,! ,"& &*$ '*,(* ,( ,! CH 1 "')-, +
+!(/' "' " -* 3 Time Mark Generator
50 Termination
Precision Cable
Figure 5Ć2:ăCRT Adjustments Calibration Setup
, ,! ,"& &*$ '*,(* (* + &*$*+
, ,! INTENSITY (',*(% ,( ."/ ,! "+)%1
*++ ,! VERTICAL MENU -,,(' ' +, CPLG ,( DC
*++ ,! SET LEVEL TO 50% -,,('
#-+, ,! FOCUS ' (' ,! "+)%1 *".* (* (* ,! +,
(-+ ( ,! ,"& &*$ "+)%1 ' *(-, "+)%1
, ,! .*,"% POSITION (',*(% (-',*%($/"+ &(."' ,! +3
%"' ( ,! ,"& &*$ "+)%1 (/' ( ,! *,"-% *
TAS 455 and TAS 465 Service Manual
5Ć5
Adjustment Procedures
. ." READOUT INTENSITY )(.,)& /&&3 )/(.,&)%1#- ) $/-. )( ." #-*&3 ,#0, ), ." -. !)'.,3 '#(#'/'
)1#(! ) ." .#' ',% #-*&3 ,)-- ." (.#, !,.#/& ,
. ." READOUT INTENSITY )(.,)& .) 0#1 ." ,)/.
#-)((. ." &#,.#)( -./* ,)' ." )-#&&)-)*
Low Frequency Output Compensation
Equipment Required: ( */&- !(,.), #.' )( *,#-#)( )2#&
& #.' )( W .,'#(.#)( #.' ( )( /&4#(*/. )/*&,
#.'
Adjustment Locations: "#- *,)/, ,+/#,- $/-.'(.- .) ." #-*&3
,#0, ), #!/, 4 )( *! 4 ), ." &).#)( ) ." $/-.4
'(.-
#-*&3 "((& ./,(#(! && ).",- ) ,-- ." AUTOSET /..)(
. ." 0)&.-#0 -& .) '
. ." -#0 -& .) '-
,-- ." ALT/CHOP, ADD /..)( ( -. DISP .) Alt
,-- ." VERTICAL MENU /..)( ( -. CPLG .) AC
)((. ." *)-#.#0 -. ,#- */&- )/.*/. ) ." */&- !(,.), .) ."
CH 1 ( CH 2 #(*/. )((.),- - -")1( #( #!/, 4 Pulse Generator
DualĆinput
Coupler
50 Termination
Precision Cable
Figure 5Ć3:ăLow Frequency Output Compensation Calibration Setup
. ." */&- !(,.), ), -. ,#- *,#) ) '- ( #-*&3
#0#-#)(
,-- ." SET LEVEL TO 50% /..)(
5Ć6
Adjustment Procedures
Adjustment Procedures
."// 0%" CURSOR 100,+ +! /"0 VOLT 0, On
"0 0%" 1./,./ !&2&/&,+/ -.0 1/&+$ 0%" "+".) 1.-,/" +, +!
0%" TOGGLE 100,+
"0 0%" 2,)0/!&2 / )" 0, *
."// 0%" CH 2 100,+
"0 0%" %++")
2,)0/!&2 / )" 0, *
."// 0%" VERTICAL MENU 100,+ +! *(" 0%" #,)),3&+$ /")" 0&,+/
#.,* 0%" *"+1 %++") H
"0 CPLG 0, GND
H
"0 VAR 0, Off
H
"0 INV 0, Off
H
"0 BW 0, Full
,/&0&,+ 0%" %++")
0. " 0, 0%" "+0". 2".0& ) $.0& 1)" )&+"
"0 CPLG 0, AC
!'1/0 ), 0"! ,+ 0%" &/-)5 .&2". ,.! #,. *&+&*1* 2".0& )
*,2"*"+0 ,# 0%" ."!,10 ,2". 0%" "+0&." $.0& 1)" ."
&/ ,++" 0 0%" 0"/0 /"01- #.,* 0%" ,/ &)),/ ,-"
Factory Horizontal Cal
Equipment Required: +" 0&*" *.( $"+".0,. &0"* ,+" -." &/&,+
,4&) )" &0"* +! ,+" W 0".*&+0&,+ &0"* Prerequisites: !'1/0*"+0 -., "!1."
NOTE
To enable factory calibration on oscilloscopes with firmware version
2.10 or above, remove jumper J205 (CAL-DIS) on the CPU board.
(See Figure 5Ć17 on page 5Ć22 for the location of J205.) If you do
not remove this jumper, the message See manual to enable FactoĆ
ry Cal" appears when you select the factory calibration routine.
Firmware versions below 2.10 do not have the calibration lockout
feature and the factory calibration routine can still execute with J205
installed.
&/ ,++" 0 )) /&$+) &+-10/ #.,* 0%" ,/ &)),/ ,-"
."// 0%" UTILITY 100,+ 0, !&/-)5 0%" 0&)&05 *"+1
TAS 455 and TAS 465 Service Manual
5Ć7
Adjustment Procedures
CAUTION
") CAL '%# ) # $ #$*
") Factory Horizontal Cal $ ) ) $ ) " ') %$ '%*) $
( '%*) $ )!( %*) (%$( )% %#&") )( $ ) " " ') %$(
$ %#&") %)( ' (&". $ ) #(( 0Toggle to set
8div about center &&'( (&". %)( ' *( %' ) $-)
%' /%$)" " ') %$ ()&(
NOTE
TOGGLE TOGGLE ( %# $) %$ % ) TOGGLE *))%$ $ ) $'" *'&%(
$% )% &%( ) %$ ) %)( + ( %$( &') $)' %' /%$)"". (
*' 1 ") Done ,$ .%* + ) &&'%&' ) (&".
Gain and Position
Adjustment
Dots Eight Divisions
Apart, Centered
Horizontally
Toggle Between
Gain and Position
Adjustment
Figure 5Ć4:ăHorizontal Adjustments (One)
$ *( %# $) %$ % ) TOGGLE *))%$ $ ) $'" *'1
&%( $% )% &%( ) %$ ) %)( + ( %$( &') $)' %' /%$)"".
( *' 1 5Ć8
Adjustment Procedures
Adjustment Procedures
") Done ,$ -%* + ) &&'%&' ) (&"-
$ %) ( (&"-
( %# $) %$ % ) TOGGLE *))%$ $ ) $'" *'&%(
$% )% $)' ) ( $" %) ) ) $)' % ) ('$ (
*' / Position
Adjustment
Center Dot
Horizontally
Toggle Dot Position
Figure 5Ć5:ăHorizontal Adjustments (Two)
%$) $* )% &'(( ) TOGGLE *))%$ $ !*() $ ) %) )% $)'
('$ , ) ) $'" *'&%( $% *$) " ) %) ()-( $)' , "
&'(( $ ) TOGGLE *))%$
") Done ,$ -%* + ) &&'%&' ) (&"-
,% +') " *'(%' " $( ' (&"-
( %# $) %$ % ) TOGGLE *))%$ $ ) $'" *'&%(
$% )% &%( ) %$ ) +') " " $( + ( %$( &') $)' %' .%$)""( *' / Gain and Position
Adjustment
Lines Eight Divisions
Apart, Centered
Horizontally
Toggle Between
Gain and Position
Adjustment
Figure 5Ć6:ăHorizontal Adjustments (Three)
TAS 455 and TAS 465 Service Manual
5Ć9
Adjustment Procedures
' Done *' ' !"( (''#" *" +#( ) ' $$%#$%'
&$ +
NOTE
At this time, the calibration routine can be terminated by selecting
Abort instead of Done. The abort option appears through the
remainder of this Factory Horizontal Cal routine.
' Done '# #"'"( #% Abort '# '%!"' ' %'#" %#('"
#""' ' #('$(' # ' '! !% "%'#% '# ' CH 1 "$(' &
&#*" " (% , Time Mark Generator
Precision Cable
50 Termination
Figure 5Ć7:ăHorizontal Output Calibration Setup
' ' '! !% "%'#% #% "& !%%&
' Done *" #!$ '
(&' ' "& !" &*$ (%+ + $%#%!" '& &(&'$&
&" ' "% (%$#& "# (&' ' &$ + #% '!
!%% $% )&#" #)% ' "'% )&#"&
' Done *" (&'
(&' ' "& + &*$ (%+ + $%#%!" '& &(&'$&
&" ' "% (%$#& "# (&' ' &$ + #% '!
!%% $% )&#" #)% ' "'% )&#"&
' Done *" (&'
(&' ' "& !" &*$ (%+ + $%#%!" '& &(&'$&
&" ' "% (%$#& "# (&' ' &$ + #% '!
!%%& $% )&#"& #)% ' "'% )&#"&
' Done *" (&'
5Ć10
(&' ' "& + &*$ (%+ + $%#%!" '& &(&'$&
Adjustment Procedures
Adjustment Procedures
2(-& 3'$ $-$1 + 41/.2$ -.! #)423 3'$ #(2/+ 8 %.1
, 1*$12 /$1 #(5(2(.-2 .5$1 3'$ "$-3$1 #(5(2(.-2
! $+$"3 Done 6'$- #)423$#
3(,$
Cal Passed ,$22 &$ //$ 12
$+$"3 Done 3. $7(3 3'$ 1.43(-$
(2".--$"3 3'$ 3$23 2$34/ %1., 3'$ .2"(++.2"./$
% 8.4 #. -.3 (-3$-# 3. /1."$$# 6(3' "3.18 $13(" + 1$/+ "$ 3. +."* .43 3'$ " +(!1 3(.- 1.43(-$ '(2 )4,/$1 .-+8 6.1*2
6(3' %(1,6 1$ 5$12(.- 2.10 -# !.5$
CAUTION
To prevent accidental loss of calibration, be sure the calibration
lockout jumper (J205) is in place. If J205 is not in place, erroneous
calibration constants can result if the calibration routine is accidenĆ
tally invoked and not properly completed.
Factory Vertical Cal
Equipment Required: -$ " +(!1 3(.- &$-$1 3.1 (3$, .-$ /1$"(:
2(.- ". 7( + " !+$ (3$, -# .-$ #4 +:(-/43 ".4/+$1 (3$, Prerequisites: .6 1$04$-"8 43/43 .,/$-2 3(.- #)423,$-3 -# $+%
+ .1(9.-3 + #)423,$-3 /1."$#41$2
NOTE
To enable factory calibration on oscilloscopes with firmware version
2.10 or above, remove jumper J205 (CAL-DIS) on the CPU board.
(See Figure 5Ć17 on page 5Ć22 for the location of J205.) If you do
not remove this jumper, the message See manual to enable FactoĆ
ry Cal" appears when you select the factory calibration routine.
Firmware versions below 2.10 do not have the calibration lockout
feature and the factory calibration routine can still execute with J205
installed.
1$22 3'$ UTILITY !433.-
TAS 455 and TAS 465 Service Manual
5Ć11
Adjustment Procedures
CAUTION
To avoid replacing the calibration constants with erroneous values,
be sure to complete all steps of this procedure after initiating the
calibration routine.
% CAL #! % &
% Factory Vertical Cal %% % #%! #!&% #%! #!&% $"($ &$# "#!"%$ ! )$# %#!&!&% %$
"#!&#
NOTE
At this time, the calibration routine can be terminated by selecting
Abort. The abort option appears through the remainder of this
Factory Vertical Cal routine.
% % #%! #%!# !# !&%"&% !
CH 1 CH 2 "&%$ $ $!' &# ) % %! %
DC Calibration Generator
Precision Cable
DualĆinput
Coupler
Figure 5Ć8:ăFactory Vertical Calibration Setup
% Done ' !"%
% % #%! #%!# !# !&%"&%
% Done ' !"%
% % #%! #%!# !# !&%"&%
% Done ' !"%
$!
% % %$% $%&"
% Done ' !"%
$ "!#%! ! % #!&% %$ !&% ! &% %! !"%
5Ć12
Adjustment Procedures
Adjustment Procedures
$##( ( ! &( $# #&($& ($ ( EXT TRIG #%)( ' '$+#
# )& .
DC Calibration Generator
Figure 5Ć9:ăExternal Trigger Calibration Setup
( ( ! &( $# #&($& $& " $)(%)(
!( Done +# $"%!(
( ( ! &( $# #&($& $&
$)(%)(
!( Done +# $"%!(
NOTE
TOGGLE TOGGLE ' $" #( $# $ ( TOGGLE )(($# # ( #&! )&%$'
#$ ($ %$' ( $# ( $(' * ' $#' %&( #(& $& -$#(!!, '
)& .
Dots Six Divisions
Apart, Centered
Horizontally
Gain and Position
Adjustment
Toggle Between
Gain and Position
Adjustment
Figure 5Ć10:ăVertical Adjustments
TAS 455 and TAS 465 Service Manual
5Ć13
Adjustment Procedures
!(!0 Done 3$!* 5+1 $2! 0$! ,,.+,.%0! %/,(5
&1/0 2!.0%( #%* * 2!.0%( !*0!.%*# +* 0$! %/,(5
.%2!. +. /!00%*# 0$! $+.%6+*0( 1./+./
%2%/%+*/ ,.0 !*0!.!
2!.0%((5 /!! %#1.! 7
Lines Six Divisions
Apart, Centered
Vertically
Figure 5Ć11:ăAdjusting Vertical Gain and Centering
!(!0 Done 3$!* 5+1 $2! +),(!0! 0$! &1/0)!*0/
!(!0 Done #%* 0+ !4%0 0$! .+10%*!
!,(! 0+ (+' +10 0$! (%.0%+* .+10%*! $%/ &1),!.
+*(5 3+.'/ 3%0$ "%.)3.! 2!./%+* 2.10 * +2!
CAUTION
To prevent accidental loss of calibration, be sure the calibration
lockout jumper (J205) is in place. If J205 is not in place, erroneous
calibration constants can result if the calibration routine is accidenĆ
tally invoked and not properly completed.
High Frequency Step Response
Equipment Required: *! ,1(/! #!*!.0+. %0!) +*! ,.!%/%+* +4%(
(! %0!) +*! 00!*10+. %0!) * +*! W 0!.)%*0%+* %0!) Adjustment Locations: $%/ ,.+! 1.! .!-1%.!/ &1/0)!*0/ 0+ 0$! %/,(5
.%2!. +. !! %#1.! 7 +* ,#! 7 "+. 0$! (+0%+* +" 0$! &1/07
)!*0/
Prerequisites: 0+.5 !.0%( ( &1/0)!*0 ,.+! 1.!
%/,(5 $**!( 01.*%*# (( +0$!./ +""
5Ć14
Adjustment Procedures
Adjustment Procedures
$##( ( %$'(* '( &' %)!' $)(%)( $ ( %)!' #&($& ($ (
CH 1 #%)( ' '$+# # )& -
Pulse Generator
50 Termination
Precision Cable
5X Attenuator
Figure 5Ć12:ăHigh Frequency Step Response Test Setup
( ( %)!' #&($& '( &' %&$ ($ ' # %)!' "%!() ($
"-&#
&'' ( AUTOSET )(($#
( ( *$!('* '! ($ "
( ( '* '! ($ #'
&'' ( VERTICAL MENU )(($# # '( CPLG ($ DC
)'( ( *&(! POSITION $#(&$! # ( #&($& %)!' "%!()
($ $(# *'$# *&(!!, #(& '%!,
TAS 465 Only . )'( # $# ( '%!, &*& $& $&
!(('( !$# (&" &'%$#' $ ( %)!' &$#( $&#&
( ( '* '! ($ #'
)'( # $# ( '%!, &*& $& $& "#")" '#!
&&($#' $ ( %)!' &$#( $&#&
NOTE
Some interaction of the adjustments made in steps 9 and 11 may
occur. For optimum oscilloscope performance, these steps should
be rechecked after making adjustments.
'$##( ( !&($# '()% &$" ( $'!!$'$%
TAS 455 and TAS 465 Service Manual
5Ć15
Adjustment Procedures
Attenuator Compensation
Equipment Required: *! ,1(/! #!*!.0+. %0!) +*! ,.!%/%+* +4%(
(! %0!) +*! W 0!.)%*0%+* %0!) * +*! 1(6%*,10 +1,(!.
%0!) Adjustment Locations: $%/ ,.+! 1.! .!-1%.!/ &1/0)!*0/ 0+ 0$! *(+#
+. !! %#1.! 6 +* ,#! 6 "+. 0$! (+0%+* +" 0$! &1/0)!*0/
Prerequisites: +3 .!-1!*5 10,10 +),!*/0%+* &1/0)!*0 ,.+!6
1.!
%/,(5 $**!( 01.*%*# (( +0$!./ +""
+**!0 0$! $%#$ ),(%01 ! +10,10 +" 0$! ,1(/! #!*!.0+. 0+ 0$! CH 1
* CH 2 %*,10/ / /$+3* %* %#1.! 6 Pulse Generator
DualĆinput
Coupler
50 Termination
Precision Cable
Figure 5Ć13:ăAttenuator Compensation Test Setup
!0 0$! ,1(/! #!*!.0+. $%#$ ),(%01 ! ,!.%+ 0+ )/
.!// 0$! AUTOSET 100+*
.!// 0$! VERTICAL MENU 100+* * /!0 CPLG 0+ DC
!0 0$! 2+(0/ %2 /(! 0+ )
!0 0$! /! %2 /(! 0+ m/
/%*# 0$! 2!.0%( POSITION +*0.+( * 0$! #!*!.0+. ,1(/! ),(%01 !
+0%* %2%/%+* 2!.0%((5 !*0!.! %/,(5 +" $**!( !0 0$! 2+(0/ %2 /(! 0+ )
.!// 0$! CH 2 100+*
.!// 0$! VERTICAL MENU 100+* * )'! 0$! "+((+3%*# /!(!0%+*/
".+) 0$! )!*1
5Ć16
H
!0 CPLG 0+ DC
H
!0 VAR 0+ Off
Adjustment Procedures
Adjustment Procedures
H
. INV .) Off
H
. BW .) Full
H
. ." 0)&.-#0 -& .) '
H
)-#.#)( ." "((& #-*&3 **,)2#'.&3 #0#-#)(- &)1 ."
"((& #-*&3
,-- ." CH 1 /..)(
$/-. " )( ." (&)! ), ), ." &..-. ,-*)(- ) ."
')-. *)-#.#0 *),.#)( ) ." "((& 10 ),'
. ." "((& 0)&.-#0 -& .) ,-- ." CH 2 /..)(
$/-. " $/-.'(. )( ." (&)! ), ), ." &..-. ,4
-*)(- ) ." ')-. *)-#.#0 *),.#)( ) ." "((& 10 ),'
. ." "((& 0)&.-#0 -& .) . ." */&- !(,.), '*&#./ .) '2#'/'
$/-. " )( ." (&)! ), ), ." &..-. ,-*)(- ) ."
"((& 10 ),'
$/-. " )( ." (&)! ), ), ." &..-. ,-*)(- ) ."
"((& 10 ),'
#-)((. ." .-. -./* ,)' ." )-#&&)-)*
Vertical Gain Adjust (Cabinet On)
Equipment Required: )(
Adjustment Locations: "#- *,)/, ,+/#,- $/-.'(.- .) ." #-*&3
,#0, ), #!/, 4 )( *! 4 ), ." &).#)( ) ." $/-.4
'(.-
Prerequisites: )1 ,+/(3 /.*/. )'*(-.#)( .),3 ,.#& &
( ..(/.), )'*(-.#)( $/-.'(. *,)/,-
&# ." #(. )( ." #(-.,/'(. ( &&)1 4'#(/. 1,' /*
,-- ." CURSOR /..)( ( -. VOLT .) On
. ." 0)&.-#0 -& .) )-#.#)( ." /,-),- #0#-#)(- *,. (., 0,.#&&3 ( "% .".
." )&.- ,)/. #- .1( ( NOTE
If the readout in step 4 is within the limits given, stop here. The
calibration is complete.
If the readout is outside the limits, continue with this procedure.
TAS 455 and TAS 465 Service Manual
5Ć17
)'( ( )&'#&' )"( ( # (' &#)( '
#( ( )&'#& '$ - &&#& & ( )&'#&' !#& #& '' (" ',
*'#"' $&(
( "( # ( "'(&)!"( " )'( #" ( '$ &*& #& (# #!$"'( #& ( '$ - &&#& "#( " '($ #& ,!$ -#) "#( " '($ (( +( ( # (' &#)( ( ( )&'#& '$ - %) *'#"' #!$"'( - )'(" (
)&'#& '$ - (# *'#"' +( ( "( #" ( "'(&)!"( " &$( (' $&#)& )"( (
)&'#& '$ - !(' ( # (' &#)(
)'(!"( $&#)& ' #!$ ( "'( ( "( " && #*&
5Ć18
Adjustment Procedures
R321
R322
R323
R140
C121
R112
C122
R141
R154
R111
Figure 5Ć14:ăDisplay Driver Board Adjustment Locations
TAS 455 and TAS 465 Service Manual
5Ć19
Adjustment Procedures
Ch1 10X
Ch1 100X
Ch2 10X
Ch2 100X
Figure 5Ć15:ăAnalog Board Adjustment Locations
5Ć20
Adjustment Procedures
Adjustment Procedures
R43
Figure 5Ć16:ăPower Supply Adjustment Location (New Power Supply)
TAS 455 and TAS 465 Service Manual
5Ć21
Adjustment Procedures
J205 (CAL-DIS)
Figure 5Ć17:ăLocation of J205 (CAL-DIS) on the CPU Board
5Ć22
Adjustment Procedures
Maintenance Information
$ $% %$ % #% % !# % % $ $ !$
Before Servicing
H
Maintenance Information , $ $&$% % &$ %$ %# &+
% $#' #% !&$ # #% !#'% +
% %# &$ ( %
H
Inspection and Cleaning , #% !# &#$ # $!%
% $ $ ! %$ )%# %# &$
H
Removal and Installation Procedures , # &#$ # # ' $% % &$ #&% #$ !#%$
H
Troubleshooting Aids , # &#$ %% ! $ % !# $ % &
$ & $ # $#' % $ +
$ !$ !#'% &#* % * &#$ # % % $ $ ! %
( # * & %%!% $#'
H
$&# * & # "& $#' !#$ H
% & % % %$ &
&$ %$ & # $#' $&# % (#$ &+
% $ %$
Tektronix Service
%# ) !# '$ $#' % '# #!# &# (##%* $ ( $ %#
$#'$ %% * !# ' $%+%' $(# % * &# $#' $
%# !# ' (##%* #!# $#' # * % %# $#'$ $%
( %# ) $#' %$ %# %# ) !# &%$ # $%
"&!! % $#' * &# $ $ !$
%# ) %$ # !!#$ % %$% #% !# '%$
% % !# &% $ ( $ % %$% ( !% $
Warranty Service
%# ) (##%$ %$ !# &% # %# *#$ # % !&#$ )+
& !# $ # ( % (##%* $ *# %# ) %$
!# ' (##%* $#' % $% %# ) $#' % $ ( #( &#
%# ) !# &% % $%$ $#' % $ ( #(
TAS 455 and TAS 465 Service Manual
6Ć1
Maintenance Information
Repair or Calibration Service
#,*'&!0 '*+ +.*$ ,1(+ ' +*.! '&,*,+ , , 1'- %1 (-* + ,'
,!$'* *(!* &'* $!*,!'& ' 1'-* & &$' +!$$'3
+'(+ ,' !, 1'-* *)-!*%&,+
* ,' , WarrantyĆPlus Service Options ( 3 '* $!+, ' , .!$3
$ +*.! '&,*,+ '* , & &$' +!$$'+'(+
Self Service
!+ %&-$ '&,!&+ $$ , !&'*%,!'& & '* (*!'! %!&,&&
& *(!* ' , & &$' +!$$'+'(+
'* (*!'! %!&,&& -+ , + +,!'&+
H
*'*%& .*!!,!'& (*'-*+
H
"-+,%&, (*'-*+
'* !&+,*-%&, *(!* -+ , + +,!'&+
H
*'-$+ '',!& !+ ,' $( !+'$, (*'$%+ ,' %'-$
H
!+++%$1 (*'-*+
H
$,*!$ + %,!+
H
*,+ $!+,+
($ !$ %'-$+ /!, -$$1 ,+, %'-$+ ',!& *'% , ,'*1
%,!+ ' %'-$ * (*'.! '* *(!* ,' , '%('&&, $.$
' , !*-!, '*+ / * +!$
'* !&'*%,!'& '&,, 1'-* $'$ #,*'&!0 +*.! &,* '* +$+ &!3
&* '& &1 *(!* +*.!+
Preventing ESD
& (*'*%!& &1 +*.! / ! *)-!*+ !&,*&$ ++ ,' , '+!$$'3
+'( * ,' , '$$'/!& (*-,!'&+ ,' .'! %!& !&,*&$
%'-$+ & , !* '%('&&,+ - ,' $,*'+,,! !+ * CAUTION
Static discharge can damage any semiconductor component in this
oscilloscope.
!&!%!2 &$!& ' +,,!3+&+!,!. %'-$+
!+ * , +,,! .'$, *'% 1'-* '1 1 /*!& *'-&
&,!+,,! /*!+, +,*( / !$ &$!& , + %'-$+ $$ +*.! %-+, '& , +,,!3* /'*# +,,!'&
6Ć2
Maintenance
Maintenance Information
+ *+0 .")+2" 0%" +/ &((+/ +," &*"0 1*("// 4+1 %2" )"0 ,." 10&+*
*1)". +2" +*/&!". (( &*0".*( )+!1("/ /00& /"*/&0&2"
")+2" *40%&*$ ,(" +# $"*".0&*$ +. %+(!&*$ /00&
0%" 3+.' /00&+* /1.# "
%.$" #.+)
+ *+0 /(&!" 0%" )+!1("/ +2". *4 /1.# "
+ *+0 1/" %&$%52"(+ &04 +),."//"! &. 3%"* ("*&*$ !1/0 #.+)
)+!1("/
(" 5 (&/0/ 0%" ."(0&2" /1/ ",0&&(&04 +# 2.&+1/ (//"/ +# /")& +*!1 5
0+./ 00& 2+(0$"/ +# ' 0+ ' ." +))+* &* 1*,.+0" 0"! "*2&.+*5
)"*0/
TableĂ6Ć1:ăRelative Susceptibility to StaticĆDischarge Damage
Semiconductor Classes
Relative
Susceptibility
Levels1
+. )& .+ &. 1&0/ +. !&/ ."0" &. 1&0/ +. (&*5
". )& .+ &. 1&0/ 3&0% &*,10/ )+/0 /"*/&0&2"
%+00'4 /&$*( !&+!"/
%+00'4 &$%5#."-1"* 4 &,+(. 0.*/&/0+./
&*". )& .+ &. 1&0/
+35,+3". %+00'4 ("/0 /"*/&0&2"
1Voltage equivalent for levels (voltage discharged from a 100ĂpF capacitor through resisĆ
tance of 100 ohms
1Ă=Ă100 to 500 V
6 = 600 to 800 V
2 = 200 to 500 V
7 = 400 to 1000 V (est.)
3 = 250 V
8 = 900 V
4 = 500 V
9 = 1200 V
5 = 400 to 600 V
ąą
TAS 455 and TAS 465 Service Manual
6Ć3
6Ć4
Inspection and Cleaning
Inspection and Cleaning #"# ' $ # $ $ ## # # $ " "&$&
$ "&$& $ ' "%"( ( "&$
## %$ $# "$(
"&$& $ ##$# &#%( # $ $
## %# " " ' "$ $
' $ $ $ # $ #&"$( $ &"$ ' (% %# $ ## " " $ $ "" "&$& $)
# %#$ " ## %#$$
General Care
$ # %#$ %$ $ ## $ # " )
$ $# #(#$ $ #% "( ' "$ $
## ## "$ &" "$$# $ "$ # ( " %#$ #$ $ ' #$" " $"# "$ $
## Inspection and
Cleaning Procedures
# $ $ ## # $ # "$ $# "!%"
$ "$ $# # %# $ $ &"$ "' "$ $# # #%$ $ "&$ $ $
## $ "$ # "&# $" %$ $ $$ % %#
## %" # ( %" )%$( $#
CAUTION
Avoid the use of chemical cleaning agents that might damage the
plastics used in this oscilloscope. Use a 75% isopropyl alcohol
solution as a cleaner and rinse with deionized water. Use only
deionized water when cleaning the menu buttons or frontĆpanel
buttons. Before using any other type of cleaner, consult your TektroĆ
nix Service Center or representative.
Avoid the use of high pressure compressed air when cleaning dust
from the interior of this instrument. (High pressure air can cause
ESD.) Instead, use low pressure compressed air (about 9 psi).
TAS 455 and TAS 465 Service Manual
6Ć5
Inspection and Cleaning
Inspection Ċ Exterior
#'%( ( $)(' $ ( $'!!$'$% $& " +& # "''# %&('
' ! - ' ) '!!$'$%' (( %%& ($ * # &$%%
$& $(&+' )' '$)! ($&$)!, ($ *&, $&&( $%&($# # %&$&"# %& (' (( $)! )' %&'$#! #)&, $&
! ($ )&(& " ($ ( $'!!$'$% ""(!,
TableĂ6Ć2:ăExternal Inspection Check List
Item
Inspect For
Repair Action
#( &$#( %#!
# $*&
& ' '&(' $&"($#'
" &+& $& ' ('
%! (* "$)!
&$#(-%#! #$'
''# " $& !$$' #$'
%& $& &%! "''# $& (* #$'
&$ # '!!' & #')!($#
# $&" $#((' &( # $##($&'
%! (* "$)!' !& $& +' $)(
&(
$##($&'
&&,# #! #
#( (
''$&'
$&&( $%&($#
''# ("' $& %&(' $ ("' #(
%#' &$ # $& &, !' #
" $##($&'
%& $& &%! (* "$)!
%! " $& "''# ("'
Cleaning Procedure Ċ Exterior
"$* !$$' )'( $# ( $)(' $ ( $'!!$'$% +( !#( &
!$(
"$* &"## &( +( !#( & !$( "%# # #&!%)&%$' (&#(-#-+(& '$!)($# $ #$( )' &'*!#&'
CAUTION
To prevent getting moisture inside the oscilloscope during external
cleaning, use only enough liquid to dampen the cloth or applicator.
!# ( '&# +( !#(-& !$( "%# +((& '$%&$%,! !$$! '$!)($# $& %&&!, #(! #&! %)&%$'
(&#(-#-+(& '$!)($#
NOTE
If the CRT Implosion Shield needs further cleansing, refer to the
procedure on page 6Ć7.
6Ć6
Maintenance
Inspection and Cleaning
Cleaning Procedure Ċ Interior
" "0!. +%*# /0!,/ *
0$! .!)%*%*# /0!,/
)+ 1(! %/ (!* 1,+* %*/,!0%+* /'%,
(+3 +"" 1/0 3%0$ .5 (+38,.!//1.! !%+*%6! %. ,,.+4%)0!(5 ,/%
!)+2! *5 .!)%*%*# 1/0 3%0$ (%*0 ".!! (+0$ ),!*! %* %/+,.+,5(
(+$+( /+(10%+* * .%*/! 3%0$ 3.) !%+*%6! 30!. +00+*80%,,! ,,(%0+. %/ 1/!"1( "+. (!*%*# %* *..+3 /,!/ * +*
%.1%0 +. /
" /0!,/ *
+ *+0 .!)+2! (( 0$! 1/0 +. %.0 0$! +/%((+/+,! )5
! /,.5 3/$! 1/%*# /+(10%+* +" %/+,.+,5( (+$+( 5 +%*#
/0!,/ 0$.+1#$ %* !// 0+ 0$! ,.0/ 0+ ! (!*! 5 .!)+2%*# !/%(5 !//%(!
/$%!( / * ,*!(/ /!! Removal and Installation Procedures
,.5 3/$ %.05 ,.0/ 3%0$ 0$! %/+,.+,5( (+$+( /+(10%+* * 3%0
/!+* / "+. 0$! )&+.%05 +" 0$! (+$+( 0+ !2,+.0!
/! $+0 _7 0+ _7 !%+*%6! 30!. 0+ 0$+.+1#$(5 .%*/! 0$!)
.5 (( ,.0/ 3%0$ (+38,.!//1.! !%+*%6! %.
.5 (( +),+*!*0/ * //!)(%!/ %* * +2!* +. .5%*# +),.0)!*0
1/%*# (+380!),!.01.! _7 0+ _7 %.1(0%*# %.
Cleaning the CRT Implosion Shield
$%/ ,.+! 1.! !/.%!/ $+3 0+ (!* +0$ /% !/ +" 0$! ),(+8
/%+* $%!( 0$1/ .!-1%.%*# %0/ .!)+2( !."+.) 0$%/ ,.+! 1.! +*(5 %"
(!*%*# 0$! '/% ! +" 0$! ),(+/%+* $%!( %/ *!!//.5
!)+2! 0$! ),(+/%+* $%!( / !/.%! %* 0$! .!)+2( * .!,(!8
)!*0 ,.+! 1.!/ !#%**%*# +* ,#! 8 (!* 0$! /$%!( 3%0$ (%*0 ".!! (+0$ ),!*! %* #!*!.(,1.,+/!
!0!.#!*08* 830!. /+(10%+* + *+0 1/! ./%2!(!*!./
!)+2! *5 /00% $.#! 0$0 )5 $2! 1)1(0! 5 $+( %*# 0$!
/$%!( %* !%+*%6! %. "(+3
*/0(( 0$! /$%!( / !/.%! %* 0$! .!)+2( * .!,(!)!*0 ,.+!8
1.!/ !#%**%*# +* ,#! 8 TAS 455 and TAS 465 Service Manual
6Ć7
6Ć8
Removal and Installation Procedures
!) )+)*!%$ %$*!$) &(%+() %( (#%," $ !$)*""*!%$ % ""
(&"" # $!" $ "*(!" #%+") &"" # $!"
$ "*(!" #%+") ( "!)* !$ *!%$) $ % * !) #$+"
Preparation Ċ
Please Read
WARNING
Before doing this or any other procedure in this manual, read the
*. +##(. found at the beginning of this manual. Also, to
prevent possible injury to service personnel or damage to
oscilloscope components, read $)*""*!%$ $ %-( $ in
Section 2, and (,$*!$ in this section.
!) )+)*!%$ %$*!$) * %""%-!$ !*#)
H
!) &(&(*%(. !$%(#*!%$ * * .%+ $ *% &(%&(". % * &(%+() * * %""%-
H
"!)* % '+!&#$* ('+!( *% (#%, $ !)))#" "" #%+")
H
(%+() %( (#%," $ (!$)*""*!%$ % * "*(!" $
# $!" #%+")
H
( #%+" "%*%( !(#) %( !$!$ "" * #%+") !$ * !)
%)!""%)%& !+() / / $ / WARNING
Before doing any procedure in this subsection, disconnect the
power cord from the line voltage source. Failure to do so could
cause serious injury or death.
Cable Removal
") ( &(*!"". %( %#&"*". (#%, !$ * %+() % (#%,!$ %( %( #%+" * . &"+ !$*%
TAS 455 and TAS 465 Service Manual
6Ć9
Removal and Installation Procedures
General Instructions
READ THESE GENERAL INSTRUCTIONS BEFORE REMOVING A
MODULE.
! Summary of Procedures " %
" Equipment
Required ! $ $ $ % Figure 6Ć1:ăOscilloscope Orientation
Summary of Procedures
" # # # ! %
# Table of Contents Equipment Required &
% #
# ! 6Ć10
Maintenance
Removal and Installation Procedures
TableĂ6Ć3:ăTools Required for Module Removal
Item No.
Name
&+&*& #!
/ $&, (%
$&,R/&*& ( $& / '. '&+ '
/ $&, (%
$&,R/&*& ( $& / '. '&+ ' ' $#!- $& &"$*/
! $ ( #( #!
)( &*& #
' $& &"$*# ( &( &$)# !
#!/(% (+.&'
Description
%(' $&,R/&*& ('
' $& #$ # '( &"$*!
!(/! '%)&
#$#/"(!! %&$/! ($$! +( !( ! (% ' ($
&"$* ( &$#(/%#! (&" # &$#( "$)!
!%/+ !&'
' $& &"$*# ( &$#( ( &$" ( #(
TAS 455 and TAS 465 Service Manual
6Ć11
Removal and Installation Procedures
Line Cord
Rear Cover
Cabinet
Mounting
Screw
Handle
Assembly
Front
Foot (2)
Line Fuse
Menu Flex
Circuit
Menu Button
Elastomer
Menu Button
Trim Ring
Front Cover
(Optional)
A4 Front Panel
Assembly
FrontĆPanel
Knobs & Shafts
Figure 6Ć2:ăCabinet and FrontĆPanel Mounted Modules
6Ć12
Maintenance
Removal and Installation Procedures
Rear CRT Bracket
Fan Mount
Fan
MU Shield
Mounting Screw
Power Supply
CRT
CPU Board
Implosion Shield
Front CRT Bracket
ÁÁÁ
ÁÁÁ
ÁÁÁ
Mounting Screw
Display Board
Display Control Board
Mounting Screw
High Voltage Cover
Attenuator
Assembly
Mounting Screw
Attenuator
Shield
Figure 6Ć3:ăInternal Modules
TAS 455 and TAS 465 Service Manual
6Ć13
Removal and Installation Procedures
Power Supply to CPU
Power Supply to
Display Board
Display Control Board
to Front Panel
Display Board to
Analog Board
Display Control Board
to Display Board
Display Board to
Analog Board
CPU to Analog Board
CPU to Front Panel
Power Supply to
Display Board
Figure 6Ć4:ăCables and Cable Routing
Line Cord and Line
Fuse
' !" %"# #" ' $ " & #$ $ "
%# $ $ # $ # # !
WARNING
Unplug the line cord from the line voltage power source before
continuing. Failure to do so can cause injury or death.
"!" $ # # ! ( ! #$ $ $$ # ' $ ' "
#%" $ # $ '" ( % " $ %" ) Line Cord
!% $ " " $ ! '" # %"
!% $ $" $ " " $ $ # # !
"#! $ $ " "$ ! " $$ $
"# %$" '# %" ) % $ " ! '( " $ $ # # !
6Ć14
Maintenance
Removal and Installation Procedures
! " # ! ! ! $ !
Line Fuse
" ! ! $ "
" "! ! " $ # ! " " '
! " # ! ! ! " Line Fuse
(1) Unplug
(2) Rotate
(3) Pull
Figure 6Ć5:ăLine Fuse and Line Cord Removal
FrontĆPanel Knobs
and Shafts
! $ " ! # ! !' ! ! % !! ! !! $ ! $ "
! ! !$ %"
Removing FrontĆPanel Knobs and Shafts
# % % " ! !! "! ! ! !%
$ ! !$ ! ! !
! ! ! !$ ! ! ! ! ! ! !$& !$ ! ! " ! !
# ! !! ! " ' TAS 455 and TAS 465 Service Manual
6Ć15
Removal and Installation Procedures
Installing FrontĆPanel Knobs and Shafts
When reĆinstalling the
knobs, note there are two
sizes. Be sure to reĆinstall
the proper size knob in the
proper location.
Figure 6Ć6:ăKnob and Shaft Removal
6Ć16
Maintenance
Removal and Installation Procedures
Feet, Rear Cover, and
Cabinet
Mounting Screws (4)
Mounting Screw
Front Foot: Rotate
and remove.
Figure 6Ć7:ăRear Cover, Cabinet, and Feet Removal
TAS 455 and TAS 465 Service Manual
6Ć17
Removal and Installation Procedures
Rear Cover
'+!,!'& , '+!$$'+'( + !&!, !& !-* 2 + , +*/*!.* ,' *%'. , '-* 2 '*0 +*/+ , , +-* , ** '.* ,' , '+!$$'+'(
!, ' , ** '.* ' , + +,(+ !& *.*+ '** ,' !&+,$$ , **
'.*
Cabinet
%'. , ** '.*
%'. , +!&$ 2 '*0 +*/ '& , $, +! ' , '+!$$'+'(
*+( , ,/' &$ -+ & (-$$ , % '-,/* + ! ,' *',, , &$
!$ '$!& , &$ -+ '-, $!, , !&, -( & +$! !, ' , '+!$$'+'( # * &', ,' !& '* +& , !&, '& , !&,*&$
$!& + 1'- *%'. !,
Replacing the Front Feet
1'- * *($!& *'&, '', -+ (!* ' +$!(2"/ ($!*+ ,' !*%$1 *!( , '', , & (-$$ /!, ,-*&!& %',!'& ,' *%'. ' , !+ +,( !& *.*+ '**
,' *($ , '',
FrontĆPanel Trim,
Menu and Power
Buttons
+ , '$$'/!& (*'-*+ ,' *%'. & !&+,$$ , *'&,2(&$ ,*!% &
-,,'&+ * ,' !-* 2 Additional procedures required 3 + (*'-*+ *)-!* , , , '$$'/!& (*'-*+ (*'*% !*+,
H
H
* '.* %'.$
!&, %'.$
Removing the Front Trim
$! $,2$ +(-* ,/& , ++!+ & , ($+,! *'&,
,*!% &* '& ' , '-* $0 $'#+ !-* 2 &,$1 (*1 , *'&, ,*!% -( & +$! ,$1 '*/* ,' !+& , $0
$'# ' , !+ -&,!$ $$ '-* $0 $'#+ * !+&
-$$ , *'&, ,*!% '*/* & ' , !&+,*-%&,
6Ć18
Maintenance
Removal and Installation Procedures
Menu Buttons and Elastomer
) $ " $ $" $ #%"
$) " & $ % %$$ #$ " & $ % $ $"
$$#
& $ % %$$ #
#$ % %$$ # ) ! % %$$ % %$$ $ $ % %$$ #$ " &" $ % %$$ # #%" $$
#$ # !" $"% $" % $ #$ " & $ % $ $"*
$$#
Power Button Replacement
$ $ " $ $" " & "#! $ ! '" %$$ !% #$"$ %$
" $ ###
#$ $ ! '" %$$ ) !%# $ %$$ $ $ ! '" %$$ #$ %$ $ # $ !
Installing the Front Trim
$ % %$$ # '" " & #"$ %$$ $ $# $
$" " #$ $ % %$$ #$ "
$ " $ $" $ $ " $ $ #$"%$ '$ %$ )
$ %" ( #
#$ $ ! '" %$$ '$ $ " $*! ! '" %$$ !
$ " $ $" $ $ #$"%$ #%" $$ %" ( #
TAS 455 and TAS 465 Service Manual
#$ ' " $ $" !!) $ !!" !"$ " $ $" 6Ć19
Removal and Installation Procedures
Trim Ring: To remove, grasp its back edge
and press up on its two tab locks. Flex the
trim ring upward; then pull it forward. Repeat
for the bottom edge of trim ring.
Tab Lock
Trim Ring
Menu Button
Menu Button Elastomer
Figure 6Ć8:ăTrim Ring and Menu Buttons Removal
A62 Front Panel
Module Removal
# #+" $&#)& '&' #+ (# &!#* (
!#) &#"( "
Additional procedures required . ' $&#)& &%)&' (( (
# #+" $&#)&' $&#&! &'(
H
H
H
& #*& !#*
"( !#*
&#"(-" &! "
( ( #' #'#$ '# (' #((#! ' #+" #" ( +#& ')& " ('
&#"( ' " ,#)
"'&( ( '$)& "(# ( ' #( ( ( &#"(-&( # ( ''' )'
"+&' (# & ' ( '"$ # ( ( &( ' )& - ) ( &#"( " !#) ' ( , +, &#! ( &#"( # ( '''
)"( ,#) " & ( "(&#""( ' ( ( && # ( !#) "$ ) ( # #+" ' &#! (& ' #" ( &#"( " !#) 6Ć20
Maintenance
Removal and Installation Procedures
H
!*'#0 &%+)&#1+&1)&%+1'%# # + H
$%, #/ !),!+1+&1)&%+ '%# + H
1+&1)&%+1'%# # + !+ + )&%+ %# $&,# &,+ )&$ + **!*
Front Panel
Assembly
Press Latch
to Release
Figure 6Ć9:ăA62 Front Panel Module Removal
FrontĆPanel Module Disassembly/Assembly
&##&.!% ')&,)* *)! + !***$#0 & + )&%+ %#
$&,# !%+& !+* *,')+* &% !+ !* )$&- )&$ + !%*+),$%+
Additional procedures required 2 * ')&,)* )(,!) + + + &##&.!% ')&,)* ')&)$ !)*+
H
)&%+1%# %&* % +* $&-#
A4 Front Panel board Removal 2 )&)$ + &##&.!% *+'* +& )1
$&- + )&%+ %# &)
$&- + )&%+1'%# "%&* % * +* )&$ + $&,#
&#!% + )&%+ %# $&,# )#* + + ) *%' #&"* + + & + !),!+ &) + % +!#+ + &) .0 )&$ + **$#0
,%+!# !+ ,%'#,* )&$ !,) 1
TAS 455 and TAS 465 Service Manual
6Ć21
Removal and Installation Procedures
' %(' #% #(' %#! ' %'"%& #(" ' ' #$$#&'
' &"$ #& " ' ' *, %#! ' %&' # ' &&! ,
' '& $#"' ' #"'%# $#'"'#!'%& !, ' #(' #% ""
', % "#' %$ ' ' '*# $#'"'#!'%& #(' %#! '
# ' %#"'/$" &&! ,
FrontĆPanel Buttons and Elastomer 0 %#%! ' # #*" &'$& #" ,
%$ " ! (''#" #% ' %#"'/$" (''#" &'#!%
!#) ' %#"'/$" (''#" &'#!% %#! ' # ' %#"'/$"/
&&! , # "#' '#( ' #"''& *' ,#(% "%& (% /
$ ! (''#"& #% &'#!%
Front Panel Board
FrontĆPanel
Button Elastomer
Menu Button
Flex the latches (3) downward
to release board. Then, rotate
the board and pull it down.
Figure 6Ć10:ăDisassembly of FrontĆPanel Assembly
Ground Spring Removal 0 %#%! ' "+' &'$ #" , %$ " ! %#(" &$%"
&" (%. / & ( %&$ #!$%&& ' & # ' %#("
&$%" '# % & ' &$%" *' '*-%& '!. " $( ' %#("
&$%" *, %#! ' &&! ,
6Ć22
Maintenance
Removal and Installation Procedures
Reassembly of the Front Panel Module 2 (%(# * $.* )*&) *%
())#" * (%$* $" #%+"
* (%$*1&$" ))#"/ -) )))#" %( "$ $ $ )*& &&"/ " * * $ %* $ % ( $ () %- %($ $ *% *
*-% )- * &**($) (+"( &**($) %( * ,(* " $ %( 0%$*"
)" (%*(/ )- *) %$ * (+ * %(
(%(# $ (,() %(( )*& *!$ +( $ * )))#"/ % *
(%$* $" #%+"
Rear of Front Panel
Ground Spring
Figure 6Ć11:ăFrontĆPanel Ground Spring
Menu Flex Circuit
Replacement
(%(# * ) &(%+( %$"/ (&" $ " %( # #$+
". (+ * - * () +$ * (%# * *%(/ #%," % * (+ *
- "" )*(%/ *
Additional procedures required 2 ) &(%+( ('+ () ** *
%""%- $ &(%+() &(%(# ()*
H
( %,( #%,"
H
$* #%,"
H
(%$* ( # #%,"
H
(%$* $" %+" #%,"
+"" * ". (+ * -/ (%# * (%$* % * # $ )) ) * ) " %$
/ *) )* !/ ! $ +( 1
TAS 455 and TAS 465 Service Manual
6Ć23
Removal and Installation Procedures
$ ( &#"( # ( ''' )'" '#$&#$- ## " " "(.
& #( ( &- #! '* &#! ( , &)( -#) &!#* +
( #" ( &#"( # ( ''' ' ' "#&! Figure 6Ć12:ăMenu Flex Circuit Board Removal
" ( '#& " " ( '* " " $ ( " # #
( !") , &)(
NOTE
DO NOT touch the contacts on the menu flex circuit with your bare
fingers. You should wear clean cloth gloves that are free of lint
when installing the menu flex circuit on the front chassis.
&) - " ( (& # ' #" ( !") , &)( (# ( #(#&
'()' #" ( &#"( # ( !" ''' " ( "!"( ' #&&(
$&'' ( , &)( "'( ( ''' '# ( &' (# ( '''
" ( ')& # ( !") , &)( )'( "'( )'" '#$&#$ ## " " "(.& #(
$( $&#)&' $&#&! " &*&' #&& (# &''! (
"'(&)!"(
A1 Analog Board
# #+" $&#)& '&' #+ (# &!#* ( " # #&.
Additional procedures required / ' $&#)& &%)&' (( (
# #+" $&#)&' $&#&! &'(
6Ć24
Maintenance
Removal and Installation Procedures
H
( &,( $&,#
H
!%* $&,#
H
(&%* (!$ $&,#
* * &)!##&)&' )& !*) *&' )! !) &-% &% * -&(" )+( % !*)
(&%* !) !% /&+
!)&%%* * #/ #!% (&$ !*) &#( % * &%%*&( %#& &(
!)&%%* * #) * &%%*&() % &% * &% * %#& &(
!)&%%* * # *& * (( '%# 0.!) &%%*&(
)!% !+( 0 ) +! ($&, * &+( 0 &(.R )(-) )+(0
!% * **%+*&( ))$#/ *& * (&%* & * ))!) .* ($&, * &+( 0 &(.R )(-) )+(!% * **%+*&( &( *& * ))!)
!* * **%+*&( ))$#/ -/ (&$ * &)!##&)&' *& &$'#* !*)
($&,#
TAS 455 and TAS 465 Service Manual
6Ć25
Removal and Installation Procedures
Mounting Screws (4)
A1 Analog board
Mounting Screws (4)
Figure 6Ć13:ăA1 Analog Board Removal
Display Driver Board
(A3)
"$* # &%! ( '%!- & *& $& ' $!!$+'
"$* ( %!'( *$!( $*& &$" ( && $ ( '%!- & *&
$& & ($ )&. / '$##( ( !- ! # &$" (' $!& # ( $##($& $# (
'%!- & *& $&
'$##( ( !' &$" '%!- & *& $&
'$##( # $# (
&$" ( #!$ $& "$* ( $)& / $&, '&+' )' ($ (( ( '%!- & *&
$& ($ ( '' '
6Ć26
Maintenance
Removal and Installation Procedures
! ! ! Display Driver
Board (A3)
Mounting Screw
High Voltage Cover
Mounting Screw
Figure 6Ć14:ăLocation of Display Driver Board
CRT Implosion Shield
! !
! ! Current Method" NOTE
TAS 455 Ċ SN: B011876 and Above
TAS 465 Ċ SN: B011640 and Above
TAS 455 and TAS 465 Service Manual
6Ć27
Removal and Installation Procedures
Additional procedures required * # "%" "!%"# $$ $
' "%"# "" "#$
H
" &" &
H
$ &
H
"$ " &
" $ "$ $ # # $ # %" $ $ #$
"& $ # $ "$ "$ %" )
"%( "( $ # % %$ $ "$ "$
%#
)#$ $ # ( $ $ # $ # $
$ "$ "$ %# #$ ' # "& $ " "$$& &"#
$ "$ # $ # # $ $ "$ "$
# #
#$ "&%#( "& $#
Implosion Shield
Guides
CRT Implosion
Shield
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
Slot In CRT Bracket
Spudger
Figure 6Ć15:ăCRT Implosion Shield Removal
6Ć28
Maintenance
Removal and Installation Procedures
Early Method2 &##&.!% ')&,)* *)! + )$&-# & + $'#&*!&% !# &) + !%*+),$%+ $&#* *)! !% + &##&.!% %&+
NOTE
TAS 455 Ċ SN: B011875 and Below
TAS 465 Ċ SN: B011639 and Below
Additional procedures required 2 !* ')&,) )(,!)* + + + &##&.!% ')&,)* ')&)$ !)*+
H
) &-) $&-#
H
!%+ $&-#
H
)&%+ )!$ $&-#
H
!*'#0 )!-) &)
H
% **$#0
H
)&$ + )&%+ & + $'#&*!&% !# ',* + +&' & + * !# ,%+!# !+
'&'* &,+ & + " *! & + )&%+ )"+
1!%*+## + $'#&*!&% * !# 0 *%''!% + * !# !%+& + ))
& + )&%+ )"+ !%*+##!% %. $'#&*!&% !# )$&-
+ #) ')&++!- &-)*
%*+## ## ')-!&,*#0 )$&- &$'&%%+*
Fan and Fan Mount
')&,)* + + &##&. *)! &. +& )$&- % !%*+## + % %
% &,%+
Additional procedures required 2 !* ')&,) )(,!)* + + + &##&.!% ')&,)* ')&)$ !)*+
H
) &-) $&-#
H
!%+ $&-#
Fan and Fan Mount Removal
+ + &*!##&*&' *& !+* &++&$ !* &.%
%'#, + % '&.) # )&$ + &.) ,''#0 $&,#
&++ + &*!##&*&' *& + *! + + &,** + % $&,%+ !* !%
,'.)*
')** + +.& #/ #&"* +& )#* + $ * !,) 1 TAS 455 and TAS 465 Service Manual
6Ć29
Removal and Installation Procedures
!
Flex Locks
Retainer Lugs
(4)
Figure 6Ć16:ăFan Mount Removal
!
Flex locks
Fan Mount
Fan
Figure 6Ć17:ăFan and Fan Mount Removal
6Ć30
Maintenance
Removal and Installation Procedures
(#%, * $ (%# * $ #%+$* +$")) )(, $ (%!$ $ %( $ #%+$* %( (#%, $ * #%+$* %( "$ $
") * *-% ". "%!) )+( $ * *%& % * $ *% * $ #%+$*,
*$ " * * $ %+* (%# * #%+$*
Fan and Fan Mount Installation
* $ -) (#%, (%# * $ #%+$* &()) * $ $*% * $
#%+$* +$* " * %+( (* $( " &) )$& $*% &" )+( $ * $
$)*"" * $ ))#"/ )% ** * (* $( "+) %$ * #%+$* ( &%) 0
* %$ $ * "( %") % * )) ) *$ )" * $ ))#"/ +$* "
* "+) )" & $*% * )#"" %") $ * *-% ". "%!) )$& $*% &"
%$$* * $ &%-( "
0 $)*"" "" (#%, %#&%$$*)
CRT
&(%+() ** %""%- )( %- *% (#%, $ $)*"" * ( *% +( 0 %( * ) &(%+(
Additional procedures required 1 ) &(%+( ('+ () ** *
%""%- $ &(%+() &(%(# ()*
H
( %,( #%,"
H
$* #%,"
H
(%$* ( # #%,"
H
)&"/ ( ,( %(
CRT Removal
* * %) ""%)%& )% *) %**%# ) %-$ %$ * -%(! )+( - * *)
(%$* $ /%+
WARNING
Breaking a CRT causes it to implode, scattering glass fragments
with high velocity and possibly injuring you. Wear protective
clothing and safety glasses (preferably a fullĆface shield). Avoiding
striking the CRT with or against any object.
Store the CRT with its display face down in a protected location,
placing it on a soft, nonabrasive surface to prevent scratching the
face plate.
TAS 455 and TAS 465 Service Manual
6Ć31
Removal and Installation Procedures
)+'/# .$! .$! 41% ! ,! '& '! ",*( .$! %-+'2 *).,*'
*, WARNING
HighĆvoltage is present on the anode lead. Do not touch the end of
the anode lead until it has been fully discharged to ground.
%-*))!. .$! ,! )* ! '! ",*( .$! *1!, /++'2 (* /'!
) %((! %.!'2 %-$,#! .* $--%- #,*/) -%)# @ %)$ )/. ,%0!, ,!(*0! .$! )/. -!/,%)# .$! #,*/) 1%,! .
.$! ,!, *" .$! ,*( .$! *..*( *" .$! $--%- /)-)+ .$! !, ,&!. ",*( .$!
$--%- !! %#/,! 4 Rear CRT Bracket
Spring Ground Wire
Release Rear CRT
Bracket Latch From
Chassis
Figure 6Ć18:ăCRT Rear Bracket and Ground Wire
%". .$! ,!, *" .$! /).%' %. %- *0! .$! $--%- $!) +/'' .$! 12 ",*( .$! ,*). ,&!.
.*+ $!,! %" 2*/ ,! ,!(*0%)# .$! --!('2 .* #%) !-- .*
*.$!, +*,.%*)- *" .$! %)-.,/(!). " 2*/ ,! %)-.''%)# )!1 *,
$, 1,! ..$! .* .$! *).%)/! 1%.$ .$%- +,*! /,!
'% ! .$! !, ,&!. ",*( .$! $! +,%)# ,*/) %,! 1%''
-'% ! */. '-*
!(*0! .$! *&!. 1%.$ %.- *0!, ",*( .$! ,!, +%) *))!.*, *" .$!
%-*))!. .$! 0!,.%' ) $*,%3*).' *).,*' 1%,!- ",*( .$! -% ! *" .$!
*.! .$! +,*+!, '*.%*) *" *.$ -!.- *" 1%,!- "*, ,!%)-.''.%*)
6Ć32
Maintenance
Removal and Installation Procedures
%# ," +"#% ' #,+ *(', +-))(*, ( ," ,(* ," #' + %(,#('
CRT Installation
%# ," +"#% ' #,+ *(', +-))(*, (',( ," + * (*/* +
)(++#%
%#!' ," "(%+ #' ," +"#% +( ,", ," .*,#% ' "(*#1(',% (',*(%
)#'+ (' ," +# ( ," * ++#%
%#!' ," +%(, #' ," ($, ,( ," $0 (' ," )#' ('',(*
' +%# ," ($, (',( ," )#'+
%#) ," +($, /#*+ ,"*(-!" ," * *$, ' +%# ,"
*$, (',( ," ** ( ," '+-* ,", ," * *$, #+ )*()*%0 %#!' /#," ," +%(,+
)*(.# #' ," "#%
%# ," )*#'! *(-' %#) #',( ," +%(, )*(.# #' ," * *$,
('', ," .*,#% ' "(*#1(',% (',*(% /#*+ ,( ," +# )#'+
-# ," *(', ( ," #',( ," *(', *$, '+-* ,", ,"
(-* -+"#('+ * #' ,"#* )*()* )% #' " (*'* ( ," *$2
,
(/* ," ** ( ," #',( ," "++#+ ' )*++ (/' (' ," * *$, -',#% #, +')+ #',( ," "++#+
(-, ," .*,#% ' "(*#1(',% (',*(% %+ ,( ," (,,(& ( ,"
"++#+
('', ," * '( % ,( #,+ ('',(* *(& ," (/* -))%0
&(-%
%-! ," ," 2/# *%$ % ,( ," #+)%0 (',*(% (*
'+,%% %% )*.#(-+%0 *&(. (&)('',+
TAS 455 and TAS 465 Service Manual
6Ć33
Removal and Installation Procedures
Rear CRT Bracket
CRT
Socket
Cover
CRT Shield
CRT
Socket
CRT
CRT Mount
Cushion (4)
Static Ground
Contact
Front CRT
Bracket
Implosion
Shield
CRT Anode Lead
CRT Shield
Support
ÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁÁ
ÁÁÁ
Light Guide
Display
Control
Board
Figure 6Ć19:ăCRT Removal
CRT Light Guide
! ! " Additional procedures required # ! H
6Ć34
H
H
Maintenance
Removal and Installation Procedures
H
%"* $($ !$
H
& & & ' ! & & '% ! & %"* ! &$! !$
+ %& & & ' * % & ' !($ & & '% ! &
%"* ! &$! !$
NOTE
To properly guide the light to the CRT, the beveled edge of the light
guide must be facing up, toward the CRT.
%& "$(!'%* $!( !"! &%
CRT Front Bracket
"$!'$% && !!) %$ !) &! $!( %& & $! & $& $ &! '$ + !$ &% "$!'$
Additional procedures required , % "$!'$ $#'$% && &
!!) "$!'$% "$!$ $%&
H
$ !($ !(
H
& !(
H
$! & $ !(
H
H
H
%"* $($ !$
%%*
!( & !'$ %$)% %'$ & $! & $& &! & %%%
& & $! & $& !'& $! % & %%% '$ +
TAS 455 and TAS 465 Service Manual
6Ć35
Removal and Installation Procedures
Mounting
Screw
Figure 6Ć20:ăRemoving the CRT front bracket
,!&' ' %"!' %' + &! ' %' !'" ' &&&
! &(% ' *' ' "(% "(!'! &%*&
!&' #%)"(&+ % ") " #"!!'&
A2 Display Control
Board
#%"(%& '' ""* &% "* '" % ") ! !&' ' %"!' %'
Additional procedures required - & #%"(% %$(%& '' '
""*! #%"(%& #%"% %&'
H
H
H
H
H
H
% ")% ")
!' ")
%"!' %
")
&#+ %)% "%
! && +
!#( ' & %"
"!'%" "%
6Ć36
"!!'"%& ! "! ' &#+
Maintenance
Removal and Installation Procedures
* * )&". %$*(%" %( +& *%-( * *%& % * )) )
)" $ * %( %+* % * %( (* $() +( /
Figure 6Ć21:ăRemoving the Display Control Board
/ $)*"" * )&". %$*(%" %( . )" $ * %( $*% *
%( (* $()
/ $)*"" "" ") * %$$*%() $ $)*"" "" &(, %+)". (#%, %#&%$$*)
A63 Power Supply
Module
&(%+() ** %""%- )( %- *% (#%, $ $)*"" * %-(
+&&". #%+"
Additional procedures required 0 ) &(%+( ('+ () ** *
%""%- $ &(%+() &(%(# ()*
H
( %,( #%,"
H
$* #%,"
Power Supply Removal
* * %) ""%)%& )% *) *%& ) %-$ %$ * -%(! )+(
)%$$* * &%-( +**%$ )* (%# * &%-( )- * %$ * %-(
+&&". #%+" +( /
TAS 455 and TAS 465 Service Manual
6Ć37
Removal and Installation Procedures
Power Button Shaft
Power Switch
Located on Power
Supply Module
Figure 6Ć22:ăPower Button Shaft Disconnect
%'#+ * #) &!% *& * !)'#. (!,( &( * % * * &)!##&)&' )& !*) &**&$ &-% &% * -&(" )+(
%'#+ * # &!% *& * &( * %'#+ * *-&/-! # (&$ * %
%'#+ * ( %& # (&$ * '&-( )+''#. &%%*&(
$&, * *-& )(-) )+(!% * &-( +''#. $&+# *& * ))!)
!* * &-( +''#. $&+# &+* & * ))!) *& &$'#* !*) ($&,#
#! * &-( +''#. $&+# !%*& * ))!) %&*!% * * * * *
* &**&$ & * &-( +''#. $&+# )#!) !%*& * )#&* * * &**&$
& * ))!) !+( /
Power Supply Installation
&%%* ## #) % -!() !)&%%* +(!% * ($&,# '(&/
+(
/!%)*## ## &$'&%%*) ($&,
6Ć38
Maintenance
Removal and Installation Procedures
Mounting Screw (2)
Mounting Tab
Figure 6Ć23:ăPower Supply Removal
TAS 455 and TAS 465 Service Manual
6Ć39
Removal and Installation Procedures
6Ć40
Maintenance
Troubleshooting
&'0 02 0#!1',+ !,+1'+0 '+$,/*1',+ +" -/,!#"2/#0 "#0'%+#" 1, &#)- 6,2
'0,)1# -/, )#*0 1, $2)16 *,"2)# '+ 1&# ,0!')),0!,-# $ *,"2)# +##"0 1,
# /#*,3#" $,/ /#-'/ ,/ /#-)!#*#+1 $,)),4 1&# Removal and Installation
Procedures ),!1#" '+ 1&'0 0#!1',+
Troubleshooting
Procedure
$ 1&# ,0!')),0!,-# ",#0 +,1 -#/$,/* !,//#!1)6 +,1# #!& 06*-1,* ,/ $')2/#
#51 /#$#/ 1, 1&# 6*-1,* 1/'5 )# )# 7 ,!1# 1&# 06*-1,*0
1&1 *,01 !),0#)6 /#0#* )# 1&# 06*-1,*0 6,2 +,1#" $ 1&#/# /# *2)1'-)#
06*-1,*0 20# -/,!#00 ,$ #)'*'+1',+ 1, /#"2!# 1&# +2* #/ ,$ -,00' )#
$2)16 *,"2)#0 "#+1'$6 -,00' )# $2)16 *,"2)#0 +" 1&#+ -#/$,/* 1&#
1/,2 )#0&,,1'+% -/,!#"2/#0 '+"'!1#"
&# ! '+#1 *201 # /#*,3#" 1, %'+ !!#00 1, 1&# *,"2)#0 $,/ *#02/'+%
0'%+)0 +" 3,)1%#0 #$#/ 1, 1&# Removal and Installation Procedures
#%'++'+% ,+ -%# 7 $,/ '+01/2!1',+0 1, /#*,3# 1&# ! '+#1
Equipment
)# 7 )'010 1&# #.2'-*#+1 /#.2'/#" 1, -#/$,/* 1&# 1/,2 )#0&,,1'+% -/,!#7
"2/#0
TableĂ6Ć4:ăEquipment Required for Troubleshooting
Equipment
Example
#01 0!')),0!,-#
#(1/,+'5 '%'1) 2)1'*#1#/ #(1/,+'5 '%& ,)1%# /, #
)2(# ,"#) CAUTION
'%& 3,)1%#0 /# -/#0#+1 4&#+ 1&# ! '+#1 '0 /#*,3#" , +,1 /#*,3# 1&#
&'%& 3,)1%# 0&'#)" $/,* 1&# '0-)6 /'3#/ ,/" 2+)#00 '1 '0 +#!#00/6 1,
*#02/# 1&# &'%& 3,)1%# , +,1 -#/$,/* 1&'0 -/,!#"2/# 4'1&,21 1&# -/#07
#+!# ,$ +,1&#/ -#/0,+ 4&, '0 ! )# ,$ -/,3'"'+% '"
TAS 455 and TAS 465 Service Manual
6Ć41
Troubleshooting
Symptom Matrix
-"%($" (&, ! . ' # # (&"## + "$)!' ($
(&$)!'$$( & ' #$ '%&( (&$)!'$$(# %&$)& $& ( %$+&
')%%!- '# "$)! (&$)!'$$(# %&$)& #!)' ' $
( %$+& ')%%!- ' # ( '%!- $#(&$! # '%!&*& (&$)!'$$(# %&$)&'
F #(' ( (&$)!'$$(# %&$)& "$'( ! !- ($ !$( (
! "$)! f #(' ($#! (&$)!'$$(# %&$)&' ((
"- !% !$( ( ! "$)!
TableĂ6Ć5:ăSymptom Matrix
Processor Analog
Display
Driver
Front
Panel
Display
Control
$ '%!- ( !!
f
f
f
f
F
&' $& &$)( )( #$( $(
f
F
f
f
#$&"! &$)(
F
f
#$&"! (&'
f
F
#$&"! (&' # &$)(
f
f
$+&.$# #$'(' #(' !)&
F
F
!.!&($# $' #$( %''
f
F
# $#(&$! +$& ' )( #$( $(
f
F
f
(& $#(&$! +$& '
f
f
F
$ $#(&$! $ $!(' * $& *&(! %$'($# $ '#! ##!
f
F
$ $#(&$! $ $!(' * $& *&(! %$'($# $
#- ##!'
f
f
F
f
f
F
F
f
Symptom
'%!- &$!"'
F
f
$!(' * # * $#(&$!'
#(#'(- $#(&$! &$!"'
$ $#(&$! $ &$)( # (& #(#'($#(&$! $ &$)( $& (& #(#'(- )(
#$( $(
$)' &$!"'
$ $#(&$! $ $)'
f
F
#! ($ $)' %&$%&!-
F
f
$ $#(&$! $ (& &$(($#
F
$ $#(&$! $ '! !!)"#($#
F
6Ć42
Maintenance
Troubleshooting
TableĂ6Ć5:ăSymptom Matrix (Cont.)
Symptom
Processor Analog
Display
Driver
Front
Panel
Display
Control
%% ) )%' $#&'#" " #%,#"'
$#&'#"
'% $#&'#" #"'%# & "#% ' %% ) #"'%# *#%&
f
f
F
#! # '& #"'%# & *#% (' "#' f
F
f
%# %# !&
# '& ) %#(' #& "#' " *' $%# #" "+ ""
%#"' "
F
#"'%# %# !&
%#"' $" #"'%# & # "#' *#% ('
%#(' &$ + *#%&
f
F
%#"' $" #"'%# & # "#' *#% " '
%#(' &$ + & "#%!
F
f
, (''#"& # "#' *#% (' #'%
(''#"& " "#& *#%
%#"' $" F
%# !&
# & !#!"'% + ' ' $#*%-#"
(' %#(' & #+
f
F
# & !#!"'% + ' ' $#*%-#"
" "#%! %#('
F
f
#! & !#!"'% + ' ' $#*%#" (' "#' #
# '%% #" " &#(%
TAS 455 and TAS 465 Service Manual
F
f
F
f
6Ć43
Troubleshooting
)*2 01/$&%41& "224-&2 3)"3
3)&1& *2 '1/.3 0".&, $/.31/,
".% 1&"%/43 /. 3)& &"241& 3)& 0/6&1 2400,8 5/,3"(&2
"3 /. 3)& #/"1%
*.
*.
*.
1/4.%
*.
*.
1&
3)& 5/,3"(&2
"001/7*-"3&,8 3)&
2"-& "2 3)& ./-*.",
5",4&
/
41. 3)& 0/6&1 /'' &-/5& 3)&
$"#,& 3/ /. 3)& #/"1% ".% $)&$+ 0*.2 ".%
'/1 2)/132 3/ (1/4.% 0*. !&2
&"241& 3)& 2*(.", /. 0*.
/. 3)& #/"1% 6*3) 3)&
3&23 /2$*,,/2$/0&
2 3)&
2*(.", "-0,*34%&
"001/7*-"3&,8
".% 3)& 0&1*/%
.
1&
".8 /' 3)& 0*.2
2)/13&%
/
!&2
/
*2$/..&$3 3)& $"#,& "3
/. 3)& 1/.3
".&, #/"1% ".% $)&$+
3)& 0*.2 "("*. '/1 2)/132
!&2
41. 3)& 0/6&1 /'' ".% 1&-/5&
3)& 0/6&1 $/1% &-/5& 3)&
'42& '1/- 3)& '42& )/,%&1
&"241& 3)& '42& 1&2*23".$&
6*3) " &"241& 3)& 2*(.", /. 0*.2
".%
/' /. 3)& #/"1% 6*3) 3)& /2$*,,/2$/0& 6)*,&
341.*.( 3)& VOLTS/DIV $/.31/,
#"$+ ".% '/13)
1&
".8 /' 3)& 0*.2
2)/13&%
2
3)& ,*.& '42&
1&2*23".$& ,&22
3)". W
&0,"$& 3)&
,*.& '42&
!&2
/
!&2
&3 3)& 3&23 /2$*,,/2$/0& 31*((&1
3/ /1- ".% 31*((&1 ,&5&, 3/ /
/&2
3)& ,*.& '42&
#,/6 6)&. 3)&
POWER #433/. *2
01&22&%
!&2
/&2
3)& 2*(.", 31*((&1
3)& /2$*,,/2$/0&
6)&. 3)& +./# *2
341.&%
!&2
#/"1%
&0,"$& 3)& /6&1
400,8 -/%4,&
/
&0,"$& 3)& #/"1%
&1'/1- 3)& 1/.3 ".&,
#/"1% 31/4#,&2)//3*.(
01/$&%41&
Figure 6Ć24:ăA5 CPU Board Troubleshooting Procedure
6Ć44
Maintenance
Troubleshooting
This procedure assumes that
there is front panel control.
Measure the power supply
voltages on J67 on the A1
Analog board.
Pin 12
+15V
Pin 10
+8.6V
Pin 9
-8.6V
Pin 6
+5.2V
Pin 1
-5.2V
Are
the voltages
approximately the
same as the nominal
value?
No
Turn the power off. Remove
the cable at J67 on the A1
Analog board and check
pins 12, 10, 9, 6, and 1 for
shorts to ground.
Yes
No
No
Perform the A3 Display Driver
Board Troubleshooting
Procedure.
Yes
Replace the A1 Analog board.
Press the CH1 button
and rotate the VOLTS/DIV
knob several times in
each direction. Repeat
for remaining channel(s).
Listen for clicks between
some of the voltage
ranges.
Were
clicks heard for
each channel?
Are any
of the pins
shorted?
Have you
performed both
the A5 CPU Board and the
A62 Front Panel module
Troubleshooting
Procedures?
No
Perform both to isolate
the problem.
Yes
Go to
Part
Two
Yes
Replace the A1 Analog board.
Figure 6Ć25:ăA1 Analog Board Troubleshooting Procedure
TAS 455 and TAS 465 Service Manual
6Ć45
Troubleshooting
/1 4-
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Figure 6Ć25:ăA1 Analog Board Troubleshooting Procedure (Cont.)
6Ć46
Maintenance
Troubleshooting
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Figure 6Ć26:ăA3 Display Driver Board Troubleshooting Procedure
TAS 455 and TAS 465 Service Manual
6Ć47
Troubleshooting
!13
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%0,!#% 3(% Figure 6Ć26:ăA3 Display Driver Board Troubleshooting Procedure (Cont.)
6Ć48
Maintenance
Troubleshooting
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Figure 6Ć27:ăA62 Front Panel module Troubleshooting Procedure
TAS 455 and TAS 465 Service Manual
6Ć49
Troubleshooting
%&/ -., "!1." %" (/ 0%"
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"-) " 0%" Figure 6Ć28:ăA2 Display Control Board Troubleshooting Procedure
6Ć50
Maintenance
Repackaging Information
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TAS 455 and TAS 465 Service Manual
6Ć51
6Ć52
Options
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Power Cord
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7
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WarrantyĆPlus Service Options
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TAS 455 and TAS 465 Service Manual
7Ć1
Options
Option 02: Front Cover and Pouch
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Options
Replaceable Electrical Parts
Parts Ordering
Information
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component number
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A2
R1234
Subassembly number
Circuit number
Read: Resistor 1234 of Subassembly 2 of Assembly 23
TAS 455 and TAS 465 Service Manual
8Ć1
Replaceable Electrical Parts
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Replaceable Electrical Parts
CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER
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8Ć6
Replaceable Electrical Parts
Component
Number
Tektronix
Part No.
Serial No.
Effective Dscont
Name & Description
Mfr. Part No.
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8Ć22
Replaceable Electrical Parts
Replaceable Electrical Parts
Component
Number
Tektronix
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Replaceable Electrical Parts
Component
Number
Tektronix
Part No.
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Mfr.
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8Ć24
, ( Replaceable Electrical Parts
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8Ć25
Replaceable Electrical Parts
Component
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8Ć27
Replaceable Electrical Parts
Component
Number
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8Ć28
( "# Mfr. Part No.
Replaceable Electrical Parts
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Component
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TAS 455 and TAS 465 Service Manual
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8Ć29
Replaceable Electrical Parts
Component
Number
8Ć30
Tektronix
Part No.
Serial No.
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8Ć32
Diagrams and Circuit Board Illustrations
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9Ć1
Diagrams and Circuit Board Illustrations
Locator Grid
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Component Locator
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Replaceable Mechanical Parts
CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER
Mfr.
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Replaceable Mechanical Parts
Fig. &
Index
No.
Tektronix
Part No.
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Qty
Mfr.
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10Ć5
Replaceable Mechanical Parts
Fig. &
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No.
Tektronix
Part No.
Serial No.
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Qty
Mfr.
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12345 Name & Description
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10Ć8
Replaceable Mechanical Parts
Fig. &
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Tektronix
Part No.
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10Ć9
Replaceable Mechanical Parts
Fig. &
Index
No.
Tektronix
Part No.
Serial No.
Effective Dscont
Qty
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Fig. &
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Tektronix
Part No.
Qty
12345 Name & Description
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TAS 455 and TAS 465 Service Manual
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Serial No.
Effective Dscont
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10Ć12
Replaceable Mechanical Parts
Fig. &
Index
No.
Tektronix
Part No.
Serial No.
Effective Dscont
Qty
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TAS 455 and TAS 465 Service Manual
10Ć13
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10Ć14
Replaceable Mechanical Parts
Fig. &
Index
No.
Tektronix
Part No.
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Figure 10Ć5:ăAccessories
TAS 455 and TAS 465 Service Manual
10Ć15
10Ć16