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TAS 465
Tektronix TAS 465 User Manual
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T
AS
465
Service
Manual
R256
R257
R128
R133
R127
R132
R139
R153
R147
R106
R107
R104
R151
R101
R102
R130
R125
R134
R135
R145
R129
R245
R224
R202
R219
R233
R234
R242
R236
R220
R221
R235
R225
R226
R259
R21
1
R227
R238
R258
R230
R316
R317
A
B
12
3
A23
A2
R1234
ChassisĆmounted
components
have
no
Assembly
Number
prefixĊsee
end
of
Replaceable
Electrical
Parts
List.
COMPONENT
NUMBER
EXAMPLE
ST
ATIC
SENSITIVE
DEVICES
C
B
E
C
E
B
C
E
B
C
E
B
C
E
B
B
E
C
CE
B
CE
B
CE
B
CE
B
CE
B
C
B
E
C
E
B
E
C
B
E
C
B
R103
R1
15
R152
R105
R149
R241
R239
R218
R229
Q202
R222
R214
U201
R120
R121
CR100
R205
R231
CR102
R155
U102
R232
R216
R240
R206
R215
C126
C125
R157
R246
R207
R1
13
R1
14
R255
R109
R108
DS301
DS302
R148
R309
R31
1
R308
R237
R210
C221
Q201
R228
R1
17
R154
R1
1
1
R138
CR101
C323
R1
16
C1
16
C107
R150
R126
R131
C122
C322
C214
J70
J80
L109
R141
C121
R140
R244
C130
R212
C204
C203
R144
C1
19
R142
L1
13
L1
1
1
L1
12
C120
C1
1
1
J72
R321
R322
R323
R326
C320
R329
CR303
J73
CR306
C312
C316
C313
C321
C219
L300
J74
C21
1
C207
Q206
Q209
C205
Q210
VR201
Q208
Q205
Q102
Q101
L102
L101
J75
C1
10
C109
C104
C106
C1
13
C124
C123
C102
L103
C108
C105
R1
12
U101
C1
18
L1
10
L104
L108
L105
L107
L106
R122
R123
C310
R310
R124
C222
R213
C201
CR201
C210
R217
J69
W66
W300
C216
CR202
C223
R260
R368
R307
R325
C305
C306
R370
Q308
C31
1
C315
VR361
Q361
R335
R336
R320
C314
VR362
VR363
VR364
VR365
VR366
VR367
C318
CR309
C333
R314
CR302
R306
R351
CR301
R315
R333
R330
R331
Q310
R371
C307
C335
R302
R303
CR308
R313
R156
C129
R305
C317
C309
C325
R327
CR307
R350
R352
R223
R367
R312
Q305
Q303
C301
Q307
R201
R374
Q306
R332
Q309
Q304
Q301
R304
CR304
R365
R364
R366
R328
CR305
R361
R360
VR360
C303
R301
CR312
C302
Q21
1
Q212
Q204
C334
C304
CR31
1
CR310
R324
C128
#10
#5
#7
#8
#1
#14
#3
#2
#4
J71
C
B
E
C
E
B
C
E
B
C
E
B
C
B
E
671-2904-02
389-1222-01
Q9AĆ1222Ć01
Figure
9Ć7:ăA3
Display
Driver
Board
202
204
Table of Contents
Table of Contents
3
List of Figures
9
List of Tables
13
Safety Summary
15
Symbols and Terms
15
Specific Precautions
16
Preface
19
Related Manuals
20
Product Description
21
User Interface
22
Autoset
22
Menus
22
General Purpose Knob and TOGGLE
22
Save/Recall Setups
22
Vertical System
23
Horizontal System
23
Trigger System
23
Measurement Cursors
23
Nominal Traits
25
Table 1 1: Nominal Traits
25
Table 1 2: Nominal Traits
26
Table 1 3: Nominal Traits
26
Table 1 4: Nominal Traits
26
Table 1 9: Nominal Traits Mechanical
28
Warranted Characteristics
29
Performance Conditions
29
Table 1 10: Warranted Characteristics
29
Typical Characteristics
35
Table 1 18: Typical Characteristics
35
Table 1 19: Typical Characteristics
35
Table 1 20: Typical Characteristics
36
Table 1 21: Typical Characteristics
37
Table 1 22: Typical Characteristics
37
Table 1 23: Typical Characteristics
37
Table 1 24: Typical Characteristics
37
Installation and Power on
39
Figure 2 1: Rear Panel
39
Figure 2 2: Fuse Compartment
40
Figure 2 3: POWER Button
40
Quick Start
41
Selecting and Deselecting Input Channels
41
Using the Menus
41
Connecting a Signal
42
Using AUTOSET
42
Compensating the Probe
43
Figure 2 4: Probe Compensation Signal Displayed after AUTOSET
43
Figure 2 5: Connections for Compensating a Probe
43
Figure 2 6: How Probe Compensation Affects Signals
45
Figure 2 7: Location of Probe Head Adjustment
45
Menu Map
46
Figure 2 8: Menu Map
46
Circuit Description
47
Logic Conventions
47
Module Interconnection
47
Figure 3 1: Block Diagram
48
Analog Board
50
Attenuators A1
50
Probe Coding Interface A1
50
Analog Acquisition Hybrid A1
50
External Trigger A1
50
Processor System
50
Processor Subsystem A5
50
ROM/RAM Subsystem A5
51
Readout Subsystem A5
51
Front Panel Interface Subsystem A5
51
Analog Board Interface Subsystem A5
51
Display Assembly
52
Vertical Output A3
52
Horizontal Output A3
52
High Voltage A3
52
Front Panel
52
Menu Switches A4
53
Cpu A4
53
FPP Pots & Probes A4
53
Leds & Driver A4
53
Switches A4
54
Power Supply
54
Fan
54
General Instructions
55
Using the Brief Performance Checks Procedures
55
Using the Performance Tests Procedures
55
Conventions
56
Figure 4 1: Graticule References
56
Brief Performance Checks
57
Power on Self Tests
57
Functional Tests
57
Functional Tests Prerequisites
58
Verify the Probe Compensator Output
58
Figure 4 2: Test Hookup for Functional Tests
58
Verify the Input Channels
59
Verify the Alt/Chop and Add Functions
60
Verify the Time Base
60
Verify the Trigger System
61
Verify the External Trigger
63
Temperature Compensation Calibrations
63
Horizontal Sweep Path
63
Figure 4 3: Horizontal Adjustments (One)
64
Figure 4 4: Horizontal Adjustments (Two)
64
Vertical Signal Path
65
Figure 4 5: Horizontal Adjustments (Three)
65
Performance Tests
67
Performance Tests Prerequisites
67
Equipment Required
67
Table 4 1: Required Test Equipment
68
Vertical System Checks
69
Check DC Gain and Voltage Measurement Accuracy
69
Figure 4 6: Gain and Voltage Test Setup
69
Check Trigger Level Accuracy
70
Table 4 2: DC Gain and Delta Volts Accuracy
70
Check DC Coupling Bandwidth
71
Figure 4 7: Trigger Level Test Setup
71
Figure 4 8: Bandwidth Test Setup
72
Table 4 3: DC Coupled Bandwidth
72
Check X Axis Gain
73
Figure 4 9: X Axis Gain Test Setup
73
Horizontal System Checks
74
Check Time Base and Time Cursor Accuracy
74
Figure 4 10: Timing Test Setup
74
Table 4 4: Time Base and Cursor Accuracies (Mag Off)
75
Check Dual Delay Accuracy
76
Table 4 5: Time Base Accuracy (Mag On)
76
Figure 4 11: Dual Delay Test Setup
77
Trigger System Checks
78
Check Trigger Sensitivity
78
Table 4 6: 500 Ms Dual Delay Accuracy
78
Figure 4 12: Trigger Sensitivity Test Setup (One)
79
Figure 4 13: Trigger Sensitivity Test Setup (Two)
80
Figure 4 14: Trigger Sensitivity Test Setup (Three)
81
Figure 4 15: Trigger Sensitivity Test Setup (Four)
81
Video Trigger Sensitivity
83
Figure 4 16: Video Trigger Test Setup
83
Adjustment Procedures
85
Requirements for Performance
85
Personnel
85
Access to Adjustments
85
Warm up Period
85
Equipment Required
86
Figure 5 1: Location of Boards for Adjustments
86
Performing the Adjustment Procedures
87
Complete Adjustment
87
Partial Adjustment
87
Adjustment Dependencies
87
Adjustment Instructions
88
Power Supply Adjustment
88
Table 5 1: Adjustments and Dependencies
88
CRT Adjustments
89
Figure 5 2: CRT Adjustments Calibration Setup
89
Low Frequency Output Compensation
90
Figure 5 3: Low Frequency Output Compensation Calibration
91
Factory Horizontal Cal
92
Figure 5 4: Horizontal Adjustments (One)
93
Figure 5 5: Horizontal Adjustments (Two)
93
Figure 5 6: Horizontal Adjustments (Three)
94
Figure 5 7: Horizontal Output Calibration Setup
95
Factory Vertical Cal
96
Figure 5 8: Factory Vertical Calibration Setup
97
Figure 5 9: External Trigger Calibration Setup
97
Figure 5 10: Vertical Adjustments
98
High Frequency Step Response
99
Figure 5 11: Adjusting Vertical Gain and Centering
99
Attenuator Compensation
100
Figure 5 12: High Frequency Step Response Test Setup
100
Figure 5 13: Attenuator Compensation Test Setup
101
Vertical Gain Adjust (Cabinet On)
102
Figure 5 14: Display Driver Board Adjustment Locations
104
Figure 5 15: Analog Board Adjustment Locations
105
Figure 5 16: Power Supply Adjustment Location
106
Figure 5 17: Location of J205 (CAL-DIS) on the CPU Board
107
Maintenance Information
109
Before Servicing
109
Tektronix Service
109
Warranty Service
109
Repair or Calibration Service
110
Self Service
110
Preventing ESD
110
Table 6 1: Relative Susceptibility to Static Discharge Damage
111
Inspection and Cleaning
113
General Care
113
Inspection and Cleaning Procedures
113
Inspection Exterior
114
Cleaning Procedure Exterior
114
Table 6 2: External Inspection Check List
114
Cleaning Procedure Interior
115
Cleaning the CRT Implosion Shield
115
Removal and Installation Procedures
117
Preparation Please Read
117
Cable Removal
117
General Instructions
118
Summary of Procedures
118
Figure 6 1: Oscilloscope Orientation
118
Table 6 3: Tools Required for Module Removal
119
Figure 6 2: Cabinet and Front Panel Mounted Modules
120
Figure 6 3: Internal Modules
121
Line Cord and Line Fuse
122
Line Cord
122
Figure 6 4: Cables and Cable Routing
122
Line Fuse
123
Front Panel Knobs and Shafts
123
Figure 6 5: Line Fuse and Line Cord Removal
123
Removing Front Panel Knobs and Shafts
124
Installing Front Panel Knobs and Shafts
124
Figure 6 6: Knob and Shaft Removal
124
Feet, Rear Cover, and Cabinet
125
Figure 6 7: Rear Cover, Cabinet, and Feet Removal
125
Rear Cover
126
Cabinet
126
Replacing the Front Feet
126
Front Panel Trim, Menu and Power Buttons, EMI Gasket
126
Removing the Front Trim
126
Menu Buttons and Elastomer
127
Power Button Replacement
127
Installing the Front Trim
127
Installing the EMI Gaskets
128
Figure 6 8: Trim Ring and Menu Buttons Removal
128
A62 Front Panel Module Removal
129
Figure 6 9: EMI Gasket Installation
129
Front Panel Module Disassembly/Assembly
130
Figure 6 10: A62 Front Panel Module Removal
130
Figure 6 11: Disassembly of Front Panel Assembly
131
Reassembly of the Front Panel Module
132
Figure 6 12: Front Panel Ground Spring
132
Menu Flex Circuit Replacement
133
Figure 6 13: Menu Flex Circuit Board Removal
133
A1 Analog Board
134
Display Driver Board (A3)
135
Figure 6 14: A1 Analog Board Removal
135
Figure 9 5: A1 Analog Board
135
CRT Implosion Shield
136
Figure 6 15: Location of Display Driver Board
136
Figure 6 16: CRT Implosion Shield Removal
137
Figure 6 17: Fan Mount Removal
138
Figure 6 18: Fan and Fan Mount Removal
139
Figure 6 19: CRT Rear Bracket and Ground Wire
141
Figure 6 20: CRT Removal
143
Figure 6 21: Removing the CRT Front Bracket
145
Figure 6 22: Removing the Display Control Board
146
Figure 6 23: Power Button Shaft Disconnect
147
Figure 6 24: Power Supply Removal
147
Table 6 4: Equipment Required for Troubleshooting
149
Table 6 5: Symptom Matrix
150
Figure 6 25: A5 CPU Board Troubleshooting Procedure
152
Figure 6 26: A1 Analog Board Troubleshooting Procedure
153
Figure 6 27: A3 Display Driver Board Troubleshooting Procedure
155
Figure 6 28: A62 Front Panel Module Troubleshooting Procedure
157
Figure 6 29: A2 Display Control Board Troubleshooting Procedure
158
Table 7 1: International Power Cords
161
Figure 9 1: Graphic Items and Special Symbols Used in this
194
Figure 9 2: Circuit Board Component Locator Diagram Key
194
Figure 9 3: Semiconductor Lead Configurations
195
Figure 9 4: Locating Components on Circuit Board or Schematic
196
Figure 9 6: A2 Display Control Board
201
Figure 9 7: A3 Display Driver Board
203
Figure 9 8: A4 Front Panel Board
205
Figure 9 9: A5 Processor Board
207
Figure 9 10: A63 Power Supply
209
Figure 10 1: Cabinet and Rear
261
Figure 10 2: Front Panel Assembly
263
Figure 10 3: Chassis
265
Figure 10 4: Circuit Boards
267
Figure 10 5: Accessories
268
5
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Tektronix TAS 465 Specifications
General
Brand
Tektronix
Model
TAS 465
Category
Test Equipment
Language
English
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