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Tektronix 465M User Manual
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AIR
FORCE
T033A1-13-496-1
NAVELEX
0969-LP-170-0010
Maintenance
Instructions
TRACE
CAN
BE
CENTERED
WITH
POSITION
CONTROL
TRACE
APPEARS
SHORT
DELAY
LINE
LEADS
TOGETHER
IF
POSITION
CONTROL
IS
NOT
MIDRANGE,
WILL
VERTICAL
BALANCE
ADJUSTMENTS
ALLOW
TRACE
TO
BE
CENTERED
WHEN
POSITION
CONTROL
IS
MIDRANGE
CHECK
VERTICAL
PREAMPLIFIER
&
DELAY
LINE
DRIVER
CHECK
VERTICAL
OUTPUT
AMPLIFIER
SPOT
/SPEARS
SWEEP
WAVEFORM
AT
TP2797
DISCONNECT
VERTICAL
DEFLECTION
PLATE
LEADS
FROM
VERTICAL
BOARD.
TRACE
OR
SPOT
APPEARS.
r
1
Figure
5-2.
Troubleshooting
chart
(sheet
2
of
5).
5-26
99
101
Table of Contents
Table of Contents
5
List of Illustrations
7
Common-Mode
8
Delayed-Sweep
8
Sweep
8
Vertical
8
Ground the Instrument
11
Safety Summary
11
Safety Warning Identification
11
And Indicators
13
General Information
13
Introduction
13
Equipment
13
Use of Warning, Caution and Note Symbols
13
Electrical Characters
14
Leading Particulars
14
Cascaded Operation
15
Accessories
20
Special Tools and Test Equipment
21
Consumable Materials
21
Test Equipment List
21
Rackmounting Accessory
23
Carrying Handle Positioning
25
Faceplate Filter Installation
25
Grounding
25
Operating Voltage Selection
25
Power Cord
25
Preparation for Use and Shipment
25
Installation Instructions
26
Removal Instructions
26
Operating Temperature
27
Preparation for Shipment
27
Delay Line Driver and Delay Line
29
Operation Instructions
29
Basic Circuit
29
Horizontal
29
Ch Ch
29
A Sweep
29
Switching Control
29
Overall Block Diagram
30
Detailed Circuit Operation
32
Horizontal Preamplifier
32
Calibrator
32
Theory of Operation
29
Trigger Generator
29
Vertical
29
Main Module
32
Gate out
32
Voltage Power
32
Attenuation and Gain Switching Sequence
33
Gain Switching
33
Input Source Followers
33
Vertical Switching
33
Channel Switching Gates
34
Add Vertical Mode
35
ALT Vertical Mode
35
CH 2 Vertical Mode
35
CHOP Vertical Mode
35
BW Limit 20 Mhz Switch
36
Horizontal Module
36
NORM Trigger Signal Pickoff
36
TRIG VIEW Switch
36
During Holdoff
37
Sequence of Events During Trigger Generation
37
Trigger Switching
37
Low
37
High-Frequency Signal Path
38
Low-Frequency Trigger Signal Path
38
After the Arm Latch Sets
39
At the End of Holdoff
39
Beginning of Holdoff
39
Slope Selection
39
A Trigger Generator
40
A Sweep Generator
41
B Trigger Generator
41
Hysteresis Adjustment
41
Trigger View Pickoff
41
Main Module
41
Axis Amplifier
41
Sequence of Events During a Sweep Generation
42
Queiscent Condition
42
Simplified Diagram of the a Sweep Generator
42
Simplified Diagram of the B Sweep Generator
45
Waveforms Produced During B Sweep Generation
46
End of Retrace
47
Before a Sweep Starts
47
After a Sweep Starts
47
Single Sweep Control
51
Crt
51
Intensity
51
BEAMFINDER Z-Axis Amplifier Operation
52
Crt Circuit
52
High Voltage Oscillator
52
High Voltage Multiplier
53
High Voltage Rectifier
53
High Voltage Regulator
53
Horizontal Amplifier
54
DC Restorer
55
Theoretical DC Restorer Waveform
55
Low Voltage Power Supplies
56
Multivibrator
56
Output Amplifier
56
Primary Circuit
56
Functions of Controls, Connectors and Indicators
57
Overcurrent Protection
57
Calibrator
58
Graticule
58
Probe
58
Input
59
Trace Rotation
58
Coaxial Cables
63
Loading Effect of Input Connections
63
Operating Considerations
63
Signal Connections
63
Cascaded Operation
64
Common Mode Rejection
64
Delayed Sweep Magnification
64
Initial Instrument Turn-On
65
Magnified Sweep Triggered after Delay
65
Initial Control Settings
66
Intensity Adjustment
66
Preliminary Adjustments
66
Trace Rotation Adjustment
66
Beam Finder
67
Normal Operation
67
Probe Compensation
67
Horizontal Deflection System
68
Intensity and Focus
68
Vertical Deflection System
68
Delayed Sweep
69
Intensified Sweep
69
Mixed Sweep
69
Normal Trigger
69
Dual Trace Phase Difference Measurement
70
Differential Time Measurement
71
High Resolution Phase Difference Measurement
71
Rise Time Measurement
71
Time Duration and Frequency Measurement
71
Maintenance Instructions
75
Operational Checkout
75
Vertical Deflection Factor Accuracy
76
Variable Vertical Deflection Factor Range
77
X Gain
77
Channel Position Effect
78
Trigger View Gain
78
Cascaded Sensitivity and Bandwidth
80
And CH
81
Trigger Jitter
82
Trigger Level Range
82
25 Mhz Triggering
83
100 Mhz Triggering
85
Low Frequency Trigger
86
Z-Axis Input
87
Sweep Rate Accuracy
88
Magnified Sweep Accuracy
89
Variable Sweep Rate Range
89
Differential Time Measurement Accuracy
91
Delay Time Jitter
92
+Gate Outputs and a Trigger Holdoff
93
Calibrator Output
94
Chopped Mode Repitition Rate
94
Preventive Maintenance
94
External Cleaning, Except Crt Faceplate and Filter
95
External Inspection
95
External Inspection Checklist
95
External Preventive Maintenance
95
Cabinet Removal
96
Internal Cleaning
96
Internal Preventive Maintenance
96
TIME/DIV Switch Cleaning
96
Circuit Board Illustrations
97
Diagrams
97
Internal Inspection Checklist
97
Troubleshooting Aids
97
Component Value Identification
98
Troubleshooting Chart
99
Check Associated Equipment
104
Check Control Settings
104
Troubleshooting Techniques
104
Visual Check
104
Semiconductor Lead Configurations
105
Cabinet Top and EMI Shield Removal and Replacement
106
Calibration and Checkout after Repair
106
Component Removal, Replacement, and Disassembly
106
Interconnecting Cables and Connectors
107
Rear Panel Assembly Removal and Replacement
107
Cabinet Bottom Removal and Replacement
108
Horizontal Module Removal
108
Vertical Module Removal
108
Cabinet Bottom Removal
109
Cathode Ray Tube Removal
109
Interface Board Removal
110
Shaft-Knob Removal
110
TIME/DIV Switch Disassembly
113
Trigger Board Removal and Replacement
113
Gratitude Illumination Board Removal and Replacement
114
Horizontal Board Removal and Replacement
114
Source and Coupling Switch Disassembly
114
Sweep Board Removal and Replacement
114
Hybrid IC Removal
115
VOLTS/DIV Attenuator Disassembly
115
BNC Connector
117
Compensation Box
117
Probe Disassembly and Repair
117
Probe Head
117
Light-Emitting Diode Replacement
118
+32 Volt Power Supply
119
Calibration
119
Crt Bias
119
Preliminary Calibration Set-Up
119
Y-Axis Alignment
120
Z-Axis Compensation
120
Channel 2 Low Frequency Compensation
121
DC Balance
121
Geometry
121
Vertical Gain
121
Channel 1 Low Frequency Compensation
122
Vertical Adjustment Locations
122
High-Frequency Compensation
123
Trigger Hysteresis and Slope Centering
124
External Trigger Centering
125
Sweep Start-Stop
125
Horizontal Gain
126
Horizontal Module Chassis
126
Magnifier Registration
127
Sweep Adjustment Locations
127
Sweep Timing
127
5 Nanosecond Timing Adjustment Locations
129
Arrangement
131
Reference Designators
131
Schematic Diagrams
131
Symbols and Reference Designators
131
Instrument Setup
132
Test Oscilloscope Setup
132
Voltage Conditions
132
Waveforms and Voltage Test Conditions
132
Schematic Symbols
133
Illustrated Parts Breakdown Introduction
135
Indention
135
Maintenance Parts List Introduction
135
Similar Assemblies
135
Tektronix Part Numbering
136
How to Use the Illustrated Parts Breakdown
140
Vertical
151
Capacitor, Fixed, Ceramic Dielectric
167
Airforce T033A1
174
Navelex 0969-Lp-170-0010
174
Ref
175
Usable on Code
175
25W
176
Ohm, 5%, 25W
176
125W
177
Ohm, 125W
177
Rise Time
80
5
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Tektronix 465M Specifications
General
Brand
Tektronix
Model
465M
Category
Test Equipment
Language
English
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