Tektronix 2445A Manuals

Manuals and User Guides for Tektronix 2445A. We have 4 Tektronix 2445A manuals available for free PDF download: Service Manual, Operator's Manual

Tektronix 2445A Service Manual

Tektronix 2445A Service Manual (326 pages)

Brand: Tektronix | Category: Test Equipment | Size: 12 MB

Table of Contents

Table of Contents
4
List of Illustrations
6
List of Tables
7
OPERATORS SAFETY Summary
8
SERVICING SAFETY Summary
9
For Qualified Service Personnel Onl y
9
Specification
10
Introduction
10
Performance Conditions
10
Horizontal Deflection System
16
Ac Power Source
19
Option 06 (CIT IT) Electrical Characteristics
20
Signal Input
20
Logic Trigger
21
Resolution Selections
25
Option 09 (WR) Electrical Characteristics
26
Asynchronous Mode
26
Inputs and Outputs
26
Mechanical Characteristics
27
Environmental Requirements
28
Operating Information
31
Safety
31
Line Voltage Selection
31
Line Fuse
31
Power Cord
31
Instrument Cooling
31
Start-Up
32
Repackaging for Shipment
32
Power Cord and Voltage Data
33
Theory of Operation
34
Detailed Circuit Description
38
Processor and Digital Control
38
FRONT-PANEL SCANNING and ANALOG CONTROLS
42
Front Panel Controls
44
Switch Matrix
45
Attenuators and Preamps
46
SCALE ILLUM Control
49
Display Sequencer, Triggers, and Sweeps
49
Status Monitoring
51
Intensity Control
51
Vertical Channel Switch and Output Amplifiers
55
High Voltage Power Supply and Crt
67
Low-Voltage Power Supply
71
Low-Voltage Regulators
76
Power down
76
Power Distribution
79
Performance Check and Functional Verification Procedure Introduction
80
Preparation
80
Test Equipment Required
81
Initial Control Settings
83
Vertical
83
Vertical Mode
84
Trigger Level
85
Accuracy Limits
87
Accuracy Limits
89
3 And CH 4 Accuracy Limits
89
Triggering
95
1 Or CH 2 Triggering Conditions
96
3 Or CH 4 Triggering Conditions
97
Horizontal
100
Settings for a and B Timing Accuracy Checks
102
Horizontal Timing Accuracy Checked against the Graticule
103
Delta Time Display Accuracy
105
Delayed Sweep Delta Time Accuracy
106
Counter/Timer/Trigger Checks
107
Trig Aft Dly
111
HORIZONTAL (Cont)
112
Calibrator, External Z-Axis and Gate Outputs
114
Trigger Holdoff
115
ADDITIONAL FUNCTIONAL Verification
116
Word Recognizer Checks
118
Data Setup Time Checks
119
Data Hold Time Checks
120
Minimum Clock Pulse Width Checks
120
Delay from Selected Edge to WORD RECOG out Checks
121
Word Recognition Delay
121
Adjustment Procedure
123
Introduction
123
Power Supplies
124
Power Supply Voltage and Ripple Tolerances
125
Crt Adjustments
126
Readout Intensity
127
Adjust-Trace Rotation
127
Dac Ref, Ch 1 and Ch
129
Input Capacitance, and Vertical Readout Jitter Adjustments
129
Automatic Calibration
132
Response Adjustments
132
Cal 01-Horizontal
132
Volts DIV
133
Horizontal Timing
134
Horizontal Timing
135
Cal 02-Vertical
136
Vertical Calibration Signals
136
Cal 03-Triggering
137
Vertical Calibration Signals
137
Cal 04-Ch 2 Delay Enable/Disable
138
CAL 05-Set HRS on and PWR ON/OFF Cycles
139
Cal 06-Vertical Transient Response
139
Cal 07-Readout Centering and Gain
142
Dynamic Centering, DC Balance, and X-Y Phase Differential Adjustments
143
Maintenance
146
Static-Sensitive Components
146
Susceptibility to Static Discharge Damage
146
Preventive Maintenance
147
Introduction
147
General Care
147
Inspection and Cleaning
147
External Inspection Check List
147
Internal Inspection Check List
148
Lubrication
149
Semiconductor Checks
149
Periodic Readjustment
149
Troubleshooting
150
Introduction
150
Troubleshooting Aids
150
Troubleshooting Equipment
151
Troubleshooting Techniques
151
Diagnostic Routines
154
Sequence of Diagnostic Tests
156
Sequence of Exerciser Routines
157
Kernel Test Failure Codes
158
Front-Panel LED Option Codes
158
Front-Panel LED Device Codes
159
Potentiometer Codes and Values (Exerciser 01)
161
Pots and Switches Column and Row Code Definitions
162
NOP Test Data
164
Corrective Maintenance
165
Introduction
165
Maintenance Precautions
165
Obtaining Replacement Parts
165
Maintenance Aids
165
Interconnections
166
Maintenance Aids
166
Transistors, Integrated
167
Circuits
167
Soldering Techniques
167
Removal and Replacement Instructions
169
Front Panel Removal
174
Options
178
Introduction
178
Power Cord Options
178
Option 01
178
Option 05
179
OPTIONS 06 and 09
179
Option 10
179
Option 11
179
Replaceable Electrical Parts
180
Cross Index - Mfr. Code Number to Manufacturer
181
Cross Index - Mfr. Code Number to Manufacturer
215
Diagrams and Circuit Board Illustrations
246
Other Parts
290
Replaceable Mechanical Parts
294
Parts Ordering Information
294
Indentation System
294
Manual Change Information
326

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Tektronix 2445A Service Manual

Tektronix 2445A Service Manual (330 pages)

Brand: Tektronix | Category: Test Equipment | Size: 20 MB

Table of Contents

Table of Contents
3
List of Illustrations
5
List of Tables
6
Operators Safety Summary
7
Servicing Safety Summary
8
Specification
9
Introduction
9
Performance Conditions
9
Mechanical Characteristics
26
Environmental Requirements
27
Operating Information
30
Safety
30
Line Voltage Selection
30
Line Fuse
30
Power Cord
30
Instrument Cooling
30
Start-Up
31
Repackaging for Shipment
31
Power Cord and Voltage Data
32
Theory of Operation
33
Introduction
33
Preparation
79
Test Equipment Required
80
Vertical
82
Accuracy Limits
86
Accuracy Limits
88
Triggering
94
CH 1 or CH 2 Triggering Conditions
95
CH 3 or CH 4 Triggering Conditions
96
Horizontal
99
Settings for a and B Timing Accuracy Checks
101
Delta Time Display Accuracy
104
Delayed Sweep Delta Time Accuracy
105
Counter/Timer/Trigger Checks
106
HORIZONTAL (Cont)
111
Calibrator, External Z-Axis and Gate Outputs
113
Additional Functional Verification
115
Word Recognizer Checks
117
Data Setup Time Checks
118
Data Hold Time Checks
119
Minimum Clock Pulse Width Checks
119
Delay from Selected Edge to WORD RECOG out Checks
120
Word Recognition Delay
120
Adjustment Procedure
122
Introduction
122
Power Supplies
123
Power Supply Voltage and Ripple Tolerances
124
Crt Adjustments
125
Dac Ref, Ch 1 and Ch
128
Input Capacitance, and Vertical Readout Jitter Adjustments
128
Automatic Calibration
131
Response Adjustments
131
Cal 01-Horizontal
131
Horizontal Timing
133
Horizontal Timing
134
Cal 02-Vertical
135
Vertical Calibration Signals
135
Cal 03-Triggering
136
Vertical Calibration Signals
136
Cal 04-Ch 2 Delay Enable/Disable
137
CAL 05-Set HRS on and PWR ON/OFF CYCLES
138
Cal 06-Vertical Transient Response
138
Cal O7-Readout Centering and Gain
141
Dynamic Centering, DC Balance, and X-Y Phase Differential Adjustments
142
Maintenance
145
Static-Sensitive Components
145
Susceptibility to Static Discharge Damage
145
Preventive Maintenance
146
Introduction
146
General Care
146
Inspection and Cleaning
146
External Inspection Check List
146
Internal Inspection Check List
147
Lubrication
148
Semiconductor Checks
148
Periodic Readjustment
148
Troubleshooting
149
Introduction
149
Troubleshooting Aids
149
Troubleshooting Equipment
150
Troubleshooting Techniques
150
Diagnostic Routines
153
Sequence of Diagnostic Tests
155
Sequence of Exerciser Routines
156
Kernel Test Failure Codes
157
Front-Panel LED Option Codes
157
Front-Panel LED Device Codes
158
Potentiometer Codes and Values (Exerciser 01)
160
Pots and Switches Column and Row Code Definitions
161
NOP Test Data
163
Corrective Maintenance
164
Introduction
164
Maintenance Precautions
164
Obtaining Replacement Parts
164
Maintenance Aids
164
Maintenance Aids
165
Transistors, Integrated
166
Circuits
166
Removal and Replacement
168
Instructions
168
Options
177
Introduction
177
Power Cord Options
177
Option 1R
177
Option 01
177
Option 05
178
OPTIONS 06 and 09
178
Option 10
178
Option 11
178

Tektronix 2445A Operator's Manual

Tektronix 2445A Operator's Manual (177 pages)

Brand: Tektronix | Category: Test Equipment | Size: 10 MB

Table of Contents

Table of Contents
6
Illustrations
9
Tables
10
Operators Safety Summary
11
The 2465A. 2455A. 2445A
14
1 Generallnformation

16
- Preparation for Use
  16
  - Safety
    16
  - Line Voltage Selection
    16
  - Line Fuse
    16
  - Power Cord
    18
  - Instrument Cooling
    19
  - Start-Up
    19
- Repackaging for Shipment
  20
2 Operation

22
- Fundamentals
  23
- Getting a Display
  23
- Vertical
  24
- Horizontal
  26
- Trigger Controls
  26
- Video Triggering
  28
- Readout
  30
- Measurements with Cursors
  32
- Display Operation
  34
- Signal Connections
  34
- Magnify Waveform Details with Delayed-Sweep
  35
- B-Trigger Operation
  36
- Delta-Delay-Time
  37
- Single-Delay-Time Measurements
  38
- Precision Timing
  39
- Triggered Delta-Delay-Time Measurements
  40
- Time Interval Resolution
  42
- Measurement Updating
  42
- Frequency. Period. and Totalize Counting
  44
- Delay Sweeps by Event Counts
  45
- Logic Triggering
  50
- Word Recognizer Operation
  52
- The Word out Signal
  53
- DMM
  53
- Save and Recall Operation
  54
3 Applications

58
4 Checks and Adjustments

70
- Introduction
  71
- Initial Setup
  71
- Trace Rotation and Adjustment
  71
- Astigmatism Adjustment
  72
- Auto DC Balance Routine
  72
- Probe Compensation
  73
- Matching Channel 2 Delay
  74
- Amplitude Check
  75
- Timing Check
  75
5 Controls, Connectors, and Indicators

77
- Introduction
  78
- Power and Display
  78
- Setup and Vertical
  81
- Horizontal
  88
- Delay and Delta Controls
  91
- Rear Panel
  102
- DMM
  104
  - DMM Displays
    108
  - Display-Mode Interactions
    108
6 Performance Characteristics

110
- Performance Conditions
  111
7 Options and Accessories

149
- Introduction
  150
- Option 11
  150
- Option 1R
  150
- Power Cord Options
  151
- Standard Accessories
  152
- Appendixa
  156
  - Extended Functions with Diagnostic Exercisers
    157
8 Appendixb

164
- Sequence Programming and Operation
  164
- Executing Sequences
  166
- Appendixc
  169
  - Power up Tests
    169
    
    Kernel Test
    169
    
    Confidence Tests
    169
- Appendixd
  171
  - Delta-Time and Delta-Delay-Time Accuracy under Noted
    172
  - Delay-Time Accuracy under Noted Conditions for the CIT IT Option
    173

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Tektronix 2445A Operator's Manual

Tektronix 2445A Operator's Manual (166 pages)

OSCILLOSCOPES and OPTIONS

Brand: Tektronix | Category: Test Equipment | Size: 5 MB

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