Tektronix TAS 455 Manuals

Manuals and User Guides for Tektronix TAS 455. We have 2 Tektronix TAS 455 manuals available for free PDF download: Instruction Manual, Service Manual

Tektronix TAS 455 Service Manual (227 pages)

Analog Oscilloscope

Brand: Tektronix | Category: Test Equipment | Size: 3 MB

Table of Contents
5
List of Figures
11
List of Tables
15
Safety Summary
17
Symbols
17
Specific Precautions
18
Product Description
24
User Interface
25
Autoset
25
Menus
25
Save/Recall Setups
25
Vertical System
26
Horizontal System
26
Trigger System
26
Measurement Cursors
26
Nominal Traits
28
Typical Characteristics
40
Installation and Power on
45
Fuse Compartment
46
Power Button
46
Quick Start
47
Selecting and Deselecting Input Channels
47
Using the Menus
47
Connecting a Signal
48
Using AUTOSET
48
Compensating the Probe
49
Connections for Compensating a Probe
49
How Probe Compensation Affects Signals
51
Location of Probe Head Adjustment
51
Menu Map
52
Circuit Description
54
Logic Conventions
54
Module Interconnection
54
Block Diagram
55
Analog Board
57
Attenuators
57
Probe Coding Interface
57
Processor System
57
Display Assembly
59
Front Panel
59
Vertical Output
59
Horizontal Output
59
Menu Switches
60
Cpu A4
60
FPP Pots and Probes A4
60
Leds and Driver A4
60
Power Supply
61
Fan
61
General Instructions
63
Using the Brief Performance Checks Procedures
63
Using the Performance Tests Procedures
63
Conventions
64
Graticule References
64
Brief Performance Checks
65
Power-On Self Tests
65
Functional Tests
65
Functional Tests Prerequisites
66
Verify the Probe Compensator Output
66
Verify the Input Channels
67
Verify the Alt/Chop and Add Functions
68
Verify the Time Base
68
Verify the Trigger System
69
Temperature Compensation Calibrations
71
Verify the External Trigger
71
Horizontal Sweep Path
71
Vertical Signal Path
73
Performance Tests
75
Performance Tests Prerequisites
75
Equipment Required
75
Vertical System Checks
77
Check DC Gain and Voltage Measurement Accuracy
77
Gain and Voltage Test Setup
77
Check Trigger Level Accuracy
78
DC Gain and Delta Volts Accuracy
78
Check DC Coupling Bandwidth
79
Trigger Level Test Setup
79
Bandwidth Test Setup
80
DC Coupled Bandwidth
80
Horizontal System Checks
81
Check X-Axis Gain
81
Check Time Base and Time Cursor Accuracy
81
Timing Test Setup
82
Time Base and Cursor Accuracies
82
Check Dual Delay Accuracy
84
Time Base Accuracy
84
Dual Delay Test Setup
85
Trigger System Checks
86
Check Trigger Sensitivity
86
Low Frequency
86
High Frequency
89
Video Trigger Sensitivity
90
Adjustment Procedures
94
Requirements for Performance
94
Personnel
94
Access to Adjustments
94
Performing the Adjustment Procedures
95
Location of Boards for Adjustments
95
Complete Adjustment
96
Partial Adjustment
96
Adjustment Dependencies
96
Power Supply Adjustment
97
New Style Power Supply
97
CRT Adjustments
97
CRT Adjustments Calibration Setup
98
Low Frequency Output Compensation
99
Factory Horizontal Cal
100
Factory Vertical Cal
104
External Trigger Calibration Setup
106
Vertical Adjustments
106
High Frequency Step Response
107
Adjusting Vertical Gain and Centering
107
High Frequency Step Response Test Setup
108
Attenuator Compensation
109
Attenuator Compensation Test Setup
109
Vertical Gain Adjust (Cabinet On)
110
Adjustment Complete
111
Display Driver Board Adjustment Locations
112
Analog Board Adjustment Locations
113
Power Supply Adjustment Location
114
Location of J205 on the CPU Board
115
Maintenance Information
117
Before Servicing
117
Tektronix Service
117
Repair or Calibration Service
118
Preventing ESD
118
Inspection and Cleaning
121
General Care
121
Inspection - Exterior
122
External Inspection Check List
122
Cleaning Procedure - Exterior
122
Cleaning - Interior
123
Cleaning the CRT Implosion Shield
123
Removal and Installation
125
Preparation
125
Cable Removal
125
Summary of Procedures
126
Oscilloscope Orientation
126
Tools Required for Module Removal
127
Cabinet and Front Panel Mounted Modules
128
Internal Modules
129
Line Cord and Line Fuse
130
Cables and Cable Routing
130
Front Panel Knobs and Shafts
131
Line Fuse
131
Removing Front Panel Knobs and Shafts
131
Installing Front Panel Knobs and Shafts
132
Knob and Shaft Removal
132
Feet, Rear Cover, and Cabinet
133
Rear Cover
134
Cabinet
134
Replacing the Front Feet
134
Removing the Front Trim
134
Menu Buttons and Elastomer
135
Power Button Replacement
135
Installing the Front Trim
135
A62 Front Panel Module Removal
136
Front Panel Module Disassembly/Assembly
137
A4 Front Panel Board Removal
137
Front Panel Buttons and Elastomer
138
Ground Spring Removal
138
Menu Flex Circuit Replacement
139
Reassembly of the Front Panel Module
139
A1 Analog Board
140
Menu Flex Circuit Board Removal
140
Display Driver Board
142
A1 Analog Board Removal
142
CRT Implosion Shield
143
Location of Display Driver Board
143
Current Method
143
CRT Implosion Shield Removal
144
Fan and Fan Mount
145
Early Method
145
Fan and Fan Mount Removal
145
Crt
147
Fan and Fan Mount Installation
147
CRT Removal
147
CRT Rear Bracket and Ground Wire
148
CRT Installation
149
CRT Light Guide
150
CRT Front Bracket
151
A2 Display Control Board
152
Removing the CRT Front Bracket
152
A63 Power Supply Module
153
Power Supply Removal
153
Removing the Display Control Board
153
Power Supply Installation
154
Power Button Shaft Disconnect
154
Troubleshooting
157
Equipment
157
Symptom Matrix
158
A5 CPU Board Troubleshooting
160
A1 Analog Board Troubleshooting
161
A3 Display Driver Board Troubleshooting
163
Repackaging Information
167
Options
170
International Power Cords
170
Rackmount
170
Front Cover and Pouch
171
Additional Probes
171
Replaceable Electrical Parts
173
Parts Ordering Information
173
List of Assemblies
173
Component Number
173
Serial No.
174
Name & Description
174
Mfr. Code
174
Mfr. Part No.
174
Cross Index
175
Diagrams and Circuit Board Illustrations
206
Component Values
206
Component Locator Diagrams
207
Graphic Items and Special Symbols
207
Circuit Board Component Locator Diagram Key
207
Replaceable Mechanical Parts
209
Using the Replaceable Parts List
209
Item Names
209
Indentation System
210
Abbreviations
210
Cabinet and Rear
213
Front Panel Assembly
215
Chassis
220
Circuit Boards
222

Tektronix TAS 455 Instruction Manual (260 pages)

Analog Oscilloscopes

Brand: Tektronix | Category: Test Equipment | Size: 3 MB

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