Tektronix 465M User manual

TI 6200.15 AIR FORCE TO 33A1-13-496-1
NAVELEX 0969-LP-1 70-0010
TECHNICAL MANUAL
OPERATION AND MAINTENANCE INSTRUCTIONS
WITH
ILLUSTRATED PARTS BREAKDOWN
OSCILLOSCOPE
(100 MHz BANDWIDTH)
AN/USM-425(V)1
Model 465M
NSN 6625-01-032-6914
Published under authority of the Secretaries of the Air Force and Navy
15 MARCH 1977

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LIST OF EFFECTIVE PAGES INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED PAGES.
NOTE: The portion of the text affected by the changes Is indicated by a
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tions are Indicated by miniature pointing hands. Changes to wiring
diagrams are indicated by shaded areas.
Dates of issue for original and changed pages are:
Original 015 MAR 77
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TABLE OF CONTENTS
Section/Para Page
LIST OF ILLUSTRATIONS iii
LIST OF TABLES v
SAFETY SUMMARY vii
IINTRODUCTION AND GENERAL
INFORMATION 1-1
1-1 INTRODUCTION M
a. Manual Purpose 1-1
b. Manual Scope 1-1
c. Manual Arrangement 1-1
1-2 USE OF WARNING, CAUTION, AND
NOTE SYMBOLS 1-1
1-3 GENERAL INFORMATION 1-1
a. Equipment Description 1-1
b. Accessories Supplied 1-1
c. Leading Particulars 1-2
II SPECIAL TOOLS AND TEST EQUIPMENT .2-1
2-1 SPECIAL TOOLS 2-1
2-2 TEST EQUIPMENT 2-1
2-3 CONSUMABLE MATERIALS 2-1
2-4 RACKMOUNTING ACCESSORY 2-3
III PREPARATION FOR USE AND SHIPMENT. 3-1
3-1 PREPARATION FOR USE 3-1
a. Unpacking the Instrument 3-1
b. Initial Inspection 3-1
c. Faceplate Filter Installation 3-1
d. Carrying Handle Positioning 3-1
e. Operating Voltage Selection 3-1
f. Power Cord Information 3-1
3-2 OPERATING TEMPERATURE 3-3
3-
3PREPARATION FOR SHIPMENT 3-3
IV OPERATION INSTRUCTIONS 4-1
4-
1THEORY OF OPERATION 4-1
4-2 BASIC CIRCUIT FUNCTIONS 4-1
a. Vertical Module ,4-1
b. Horizontal Module 4-1
c. Main Module 4-4
Section/Para Page
IV OPERATION INSTRUCTIONS (cont)
4-3 DETAILED CIRCUIT OPERATION .... 4-4
a. Vertical Module 4-4
(1) CH 1andCH 2Input 4-4
(2) CH 1and CH 2Preamplifier and
Vertical Switching 4-5
(3) Vertical Switching Control 4-5
(4) Delay Line Driver and Delay Line ..4-7
(5) Vertical Amplifier 4-8
b. Horizontal Module 4-8
(1) Trigger Input Amplifiers and
Trigger Switching 4-8
(2) ATrigger Generator 4-9
(3) BTrigger Generator 4-13
(4) ASweep Generator 4-13
(5) BSweep Generator 4-16
(6) Horizontal Preamplifier 4-19
(7) -HA GATE OUT Amplifier 4-20
(8) -HB GATE OUT Amplifier 4-20
(9) Sweep Control 4-20
c. Main Module 4-23
(1) ZAxis Amplifier 4-23
(2) Crt Circuit 4-24
(3) Horizontal Amplifier 4-26
(4) -HB GATE OUT Amplifier 4-26
(5) Calibrator 4-28
(6) Low-Voltage Power Supplies 4-28
4-4 FUNCTIONS OF CONTROLS, CON-
NECTORS, AND INDICATORS 4-29
4-5 OPERATING CONSIDERATIONS 4-35
a. Signal Connections 4-35
b. Loading Effect of input Connections. ..4-35
c. Coaxial Cables 4-35
d. Grounding 4-35
e. Graticule 4-35
f. Common-Mode Rejection 4-36
g. Cascaded Operation 4-36
h. Delayed-Sweep Magnification 4-36
4-6 INITIAL INSTRUMENT TURN-ON . . ..4-37
4-7 PRELIMINARY ADJUSTMENTS 4-38
a. Initial Control Settings 4-38
b. Intensity Adjustment 4-38
c. Focus and Astigmatism Adjustment. ...4-38
d. Trace Rotation Adjustment 4-38
e. Graticule Scale Illumination 4-39
f. Probe Compensation 4-39
I

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TABLE OF CONTENTS (cont)
Section/Para
IV OPERATION INSTRUCTIONS (continued)
4-8 NORMAL OPERATION 4-39
a. Beam Finder 4-39
b. Intensity and Focus 4-40
c. Vertical Deflection system 4-40
d. Horizontal Deflection System 4-40
4-9 INSTRUMENT TURN-OFF 441
4-10 APPLICATIONS 441
a. Peak to Peak Amplitude Measurement .441
b. Instantaneous Amplitude Measurement 442
c. Dual Trace Phase Difference
Measurement 4-42
d. High Resolution Phase Difference
Measurement 4-43
e. Time Duration and Frequency
Measurement 4-43
f. Rise Time Measurement 4-43
g. Differential Time Measurement 4-43
VMAINTENANCE INSTRUCTIONS 5-1
5-1 OPERATIONAL CHECKOUT 5-1
5-2 PREVENTIVE MAINTENANCE 5-20
a. Preventive Maintenance Schedule 5-20
b. External Preventive Maintenance 5-21
c. Internal Preventive Maintenance 5-22
5-3 TROUBLESHOOTING 5-22
a. Troubleshooting Aids 5-23
b. Troubleshooting Techniques 5-30
54 CALIBRATION AND CHECKOUT AFTER
REPAIR 5-32
5-5 COMPONENT REMOVAL, REPLACEMENT,
AND DISASSEMBLY 5-32
a. Cabinet Top and EMI Shield Removal
and Replacement 5-32
b. Interconnecting Cables and Connectors .5-33
c. Rear Panel Assembly Removal and
Replacement 5-33
d. Cabinet Bottom Removal and
Replacement 5-34
e. Vertical Module Removal 5-34
f. Horizontal Module Removal 5-34
g. Cathode Ray Tube (Crt) Removal 5-35
h. Shaft-Knob Removal 5-36
i. Interface Board Removal 5-36
Section/Para P®9®
VMAINTENANCE INSTRUCTIONS (continued)
j. Aand BTiming Switch Board Assembly
Removal and Replacement 5-37
k. Aand BTiming Switch Disassembly ...5-38
l. Trigger Board Removal and
Replacement 5-39
m. Source and Coupling Switch
Disassembly 5-40
n. Horizontal Board Removal and
Replacement 540
o. Sweep Board Removal and Replacement 5-40
p. Graticule Illumination Board Removal
and Replacement 5-40
q. Hybrid 1C Removal and Replacement ..5-40
r. VOLTS/DIV Attenuator Disassembly. ..541
s. Probe Disassembly and Repair 5-43
t. Light Emitting Diode (LED)
Replacement 5-44
u. Push Button, Shaft Extension, and Shaft
Extension Adapter Removal and
Replacement 5-44
5-6 CALIBRATION 5-45
a. Preliminary Calibration Set-Up
Procedure 5-45
b. +32 Volt Power Supply 5-45
c. Crt Bias 5-45
d. Z-Axis Compensation 5-46
e. Y-Axis Alignment 5-46
f. Geometry 5-47
g. Calibrator 5-47
h. Dc Balance 5-47
i. Vertical Gain 5-47
j. Channel 2Low Frequency
Compensation 5-47
k. Channel 1Low Frequency
Compensation 5-48
l. High-Frequency Compensation 5-49
m. Trigger Hysteresis and Slope Centering .5-50
n. External Trigger Centering 5-51
o. Sweep Start-Stop 5-51
p. Horizontal Gain 5-52
q. Magnifier Registration 5-53
r. BSweep Timing 5-53
s. .5 JUS Timing 5-54
t. 5ns Timing 5-54
u. XGain 5-54
II

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TABLE OF CONTENTS (cont)
Section/Para ^^9®
VI DIAGRAMS 6-1
6-1 INTRODUCTION 6-1
6-2 ARRANGEMENT 6-1
a. Schematic Diagrams 6-1
b. Symbols and Reference Designators. ... 6-1
6-
3WAVEFORMS AND VOLTAGE TEST
CONDITIONS 6-2
VII ILLUSTRATED PARTS BREAKDOWN
INTRODUCTION 7-1
7-
1GENERAL 7-1
7-2 INTRODUCTION 7-1
7-3 MAINTENANCE PARTS LIST
INTRODUCTION 7-1
7-4 INDENTATION 7-1
7-5 FIGURE CROSS REFERENCE NOTES. .7-1
7-6 SIMILAR ASSEMBLIES 7-1
7-7 ATTACHING PARTS 7-1
7-8 TEKTRONIX PART NUMBERING
SYSTEM 7-2
7-9 EXPLANATION OF COLUMNS IN
SECTION VIII 7-2
Section/Para
VII ILLUSTRATED PARTS BREAKDOWN
INTRODUCTION (continued)
7-10 NUMERICAL INDEX INTRODUCTION 7-2
7-1 1SOURCE, MAINTENANCE, AND
RECOVERABILITY (SMR) CODE 7-2
7-12 REFERENCE DESIGNATION INDEX
INTRODUCTION 7-2
7-13 HOW TO USE THIS IPB 7-2
7-14 ABBREVIATIONS AND LETTER SYMBOL
LIST 7-2
7-15 MANUFACTURER'S CODE CROSS
REFERENCE LIST 7-3
VIII illustrated PARTS BREAKDOWN
MAINTENANCE PARTS LIST 8-1
IX ILLUSTRATED PARTS BREAKDOWN
NUMERICAL INDEX 9-1
XILLUSTRATED PARTS BREAKDOWN
REFERENCE DESIGNATION INDEX ....10-1
XI DIFFERENCE DATASHEETS 11-1
LIST OF ILLUSTRATIONS
Figure Title Page
1-0 AN/USM 425(V)1 with front cover 1-0
3-1 Removal and installation of faceplate filters ..3-2
3-2 Carrying handle positioning 3-3
3-
3Power section of rear panel 3-3
4-
1Overall block diagram (sheet 1of 2) 4-2
4-1 Overall block diagram (sheet 2of 2) 4-3
4-2 Channel switching gates 4-6
4-3 Trigger switching 4-10
4-4 Trigger signal paths with SOURCE set to
NORM and COUPLING set to AC 4-1
1
4-5 Atrigger generator 4-12
4-6 Simplified diagram of the Asweep
generator 4-14
F'9ure Title Page
4-7 Waveforms produced during A
sweep operation 4-15
4-8 Simplified diagram of the B
sweep generator 4-17
4-9 Waveforms produced during Bsweep
generation 4-18
4-10 Functional block diagram of the sweep
control integrated circuit and associated
circuitry 4-21
4-1 1Waveforms produced by holdoff control
circuitry 4-22
4-12 Waveforms produced during AUTO sweep
gate generation 4-23
4-13 Waveforms produced in the high-voltage
oscillator 4-24
iii

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NAVELEX 0969-LP-170-0010
Figure
4-14
4-15
4-16
4-17
4-18
4-19
4-20
4-21
4-22
4-23
4-24
4-25
4-26
4-27
4-28
5-1
5-2
5-2
5-2
5-2
5-2
5-3
54
5-5
5-6
5-7
5-8
5-9
5-10
5-11
5-12
5-13
5-14
5-15
5-16
LIST OF ILLUSTRATIONS (cont)
Title Page
High-voltage rectifier 4-26
Dc restorer 4-27
(blank)
Graticule measurement markings 4-35
Common-mode rejection of an undesired
line-frequency 4-36
Delayed sweep magnification 4-37
Probe compensation 4-39
Example of peak to peak voltage
measurement 4-42
Example of instantaneous voltage
measurement 4-42
Example of dual trace phase difference
measurement 4-43
Example of high resolution phase
difference measurement 4-43
Example of time duration and frequency
measurement 4-44
Example of rise time mesurement 4-44
Example of time-duration measurement
using AINTEN mode 4-44
Example of time-duration measurement
using BDLY'D mode 445
Component value identification 5-24
Troubleshooting chart (sheet 1of 5) 5-25
Troubleshooting chart (sheet 2of 5) 5-26
Troubleshooting chart (sheet 3of 5) 5-27
Troubleshooting chart (sheet 4of 5) 5-28
Troubleshooting chart (sheet 5of 5) 5-29
Semiconductor lead configurations 5-31
Multiconductor connector identification ....5-33
Rear panel removal 5-34
Cabinet bottom removal 5-35
Vertical module removal 5-36
Horizontal module removal 5-37
Shaft-knob removal 5-38
Horizontal module board locator 5-38
TIME/DIV switch disassembly 5-39
Hybrid 1C removal 5-41
VOLTS/DIV attenuator disassembly 5-42
Probe BNC connector removal and
replacement 5-44
Light-emitting diode (LED) lead
identification 5-44
-1-32 volt test point and adjustment
location 5-46
Figure Title Page
5-17 Crt and Z-Axis test point and adjustment
locations 546
5-18 Crt and Calibration test point and adjust-
ment locations 4-57
5-19 Vertical adjustment locations 548
5-20 Trigger hysteresis and slope centering
adjustment locations 5-50
5-21 External trigger centering setup 5-51
5-22 Trigger and horizontal adjustment
locations 5-52
5-23 Sweep adjustment locations 5-53
5-
24 5nanosecond timing adjustment locations ...5-55
6-
1Schematic symbols 6-3
FO-1 (Front) Front and rear panel controls,
connectors, and indicators 6-5
FO-1 (Rear) A1/A3 Cam Switching, A2/A4
Attenuator, and A5 Vertical
circuit board layouts and com-
ponent locators 6-6
FO-2 (Front) CH 1and CH 2Input schematic
diagram 16-7
FO-2 (Rear) A5 Vertical circuit board layout and
component locators 6-8
FO-3 (Front) Vertical Preamplifier and Switching
schematic diagram 26-9
FO-3 (Rear) A5 Vertical circuit board layout and
component locator 6-10
FO-4 (Front) Delay Line Driver Vertical Amplifier,
and Interface Connector schematic
diagram 36-1
1
F04 (Rear) A6 Horizontal and A7 Trigger circuit
board layouts and component
locators 6-12
FO-5 (Front) Trigger schematic diagram 46-13
FO-5 (Rear) A6 Horizontal and A8 Sweep circuit
board layouts and component
locators 6-14
FO-6 (Front) Sweep and Horizontal Preamplifier
schematic diagram 56-15
FO-6 (Rear) A9 ATiming Switch and A10 B
Timing Switch circuit board lay-
outs and component locators 6-16
FO-7 (Front) Aand BTiming Switch and Interface
Connector schematic diagram 6. . .6-17
FO-7 (Rear) Partial A1 1Interface circuit board
layout and component locator . . ..6-18
IV

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LIST OF ILLUSTRATIONS (cont)
Figure Title Page Figure Title Page
FO-8 (Front) Horizontal Amplifier, +Gate, and 8-7 Circuit Board Assembly, Horizontal
Calibrator schematic diagram 7. ...6-19 Module .8-26
FO-8 (Rear) Partial A1 1Interface circuit board 8-8 Circuit Board Assembly, Trigger
layout and component locator .. . .6-20 (sheet 1of 3) .8-30
FO-9 (Front) Crt and ZAxis schematic diagram 8.6-21 8-8 Circuit Board Assembly, Trigger
FO-9 (Rear) Partial A1 1Interface circuit board (sheet 2of 3) .8-31
layout and component locator ....6-22 8-8 Circuit Board Assembly, Trigger
FO-10 (Front) Power Supply and Interface Con- (sheet 3of 3) .8-32
nector schematic diagram 9.6-23 8-9 Circuit Board Assembly, A
FO-11 (Front) Interconnect Wiring schematic Timing (sheet 1of 2) .8-36
diagram 10 .6-25 8-9 Circuit Board Assembly, B
FO-12 (Front) P6101 and P6104 Probe schematic Timing (sheet 2of 2) .8-38
diagram 11 .6-27 8-10 Circuit Board Assembly, Horizontal .8-40
8-11 Circuit Board Assembly, Sweep
8-1 Oscilloscope, AN/USM-425(V)1 ....8-0 8-43
8-2 Accessories and Cover Assembly. ...8-2 8-11 Circuit Board Assembly, Sweep
8-3 Cabinet and Handle Assembly ... . .8-5 (sheet 2 of 3) .8-44
84 Circuit Board Assembly, Vertical 8-11 Circuit Board Assembly, Sweep
Module .8-7 (sheet 3of 3) .8-45
8-5 Circuit Board Assembly, Vertical 8-12 Electron Tube Assembly .8-50
(sheet 1of 4) .8-12 8-13 Main Chassis Assembly .8-53
8-5 Circuit Board Assembly, Vertical 8-14 Circuit Board Assembly, Interface
(sheet 2of 4) .8-13 (sheet 1of 4) .8-58
8-5 Circuit Board Assembly, Vertical 8-14 Circuit Board Assembly, Interface
(sheet 3of 4) .8-14 (sheet 2of 4) .8-59
8-5 Circuit Board Assembly, Vertical 8-14 Circuit Board Assembly, Interface
(sheet 4of 4) .8-15 (sheet 3of 4) .8-60
8-6 Circuit Board Assembly, Cam 8-14 Circuit Board Assembly, Interface
Switch Channel 1(sheet 1of 2) ...8-22 (sheet 4of 4) .8-61
8-6 Circuit Board Assembly, Cam
Switch Channel 2(sheet 2 of 2) ...8-24
LIST OF TABLES
Number Title Page Number Title Page
1-1 Electrical Characteristics . . 1-2 4-2 Functions of Controls, Connectors,
1-2 Environmental Characteristics ..... 1-7 and Indicators .4-30
1-3 Physical Characteristics ..1-8
5-1 Operational Checkout Procedures. . . 5-1
2-1 Test Equipment List ..2-1 5-2 Preventive Maintenance Schedule ...5-20
22Consumable Materials List ..2-3 5-3 External Inspection Checklist . . . ..5-21
5-4 Internal Inspection Checklist .5-23
5-5 Power Supply Tolerance and Ripple .5-30
4-1 Attenuation and Gain Switching
Sequence .... . . 4-5 6-1 Reference Designators .6-1
V(vi blank)