Tektronix P6231 User manual
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INSTRUCTION Part No. 070-6027-00
TEK
MANUAL
Product Group 60
-
PROBE
Please Check
for
CHANGE
INFORMATION
at the Rear
of
This Manual
First Printing
MAY
1986
Revised
MAR
1987
Copyright
a
1986
Tektronix, Inc.
All
rights reserved.
Contents of this
publication may not be reproduced in any
form without the written permissionof Tektronix, Inc.
Products of Tektronix, Inc. and its subsidiaries are covered
by
U.S. and foreign patents and/or pending patents.
TEKTRONIX, TEK, SCOPE-MOBILE, and are
registered trademarks
of
Tektronix, Inc. TELEQUIPMENT
is a registeredtrademark of Tektronix U.K. Limited.
Printed in
U.S.A.
Specification and price change privileges
are reserved.
TABLE
OF
CONTENTS
...
..............................................
-
LIST OF ILLUSTRATIONS
111
LIST OF TABLES
............................................................
v
................................
OPERATORS SAFETY SUMMARY
vi
--
...................................
SERVICING SAFETY SUMMARY
vii
SECTION
1
SPECIFICATION
DESCRIPTION
...............................................
1-1
.............................................
ACCESSORIES
1-1
PERFORMANCECONDITIONS
....................
1-2
-
SECTION
2
OPERATING INSTRUCTIONS
INTRODUCTION
............................................
2-1
-
OPERATING CONSIDERATIONS
.................
2-1
Probe Handling
...........................................
2-1
Input Dynamic Range
................................
2-1
Probe Grounding
........................................
2-2
-
................
CONTROLS AND CONNECTORS 2-4
................................
PROBE ACCESSORIES 2-4
OPERATION
..................................................
2-7
SECTION
3
PERFORMANCE
CHECK
......................................................
PURPOSE 3-1
TEST EQUIPMENT REQUIRED
.................
.3-1
LIMITS AND TOLERANCES
.........................
3-1
..............................................
PREPARATION
3-1
....................................
PROCEDURESTEPS 3-3
DC Offset Check
........................................
3-3
BandwidthIRise Time
High-FrequencyAberrations Check
...........
3-5
The following servicing instructions are for use by
qualified personnel only. To avoid personal injury, do
not perform any servicing other than that contained in
operating instructions unless you are qualified to do so.
TABLE
OF
CONTENTS
(cont)
SECTION
4
ADJUSTMENT PROCEDURE
PURPOSE
......................................................
4-1
....................
TEST EQUIPMENT REQUIRED
4-1
ADJUSTMENT SEQUENCE
..........................
4-1
.........................
ADJUSTMENT LOCATIONS
4-1
..............................................
PREPARATION
4.2
PROCEDURE STEPS
....................................
4-4
............................
CheckIAdjust Offset Null
4-4
CheckIAdjust Attenuation Accuracy
...................
and Mid-Frequency Response
4-4
SECTION
5
THEORY OF OPERATION
INTRODUCTION
............................................
5-1
GENERALCIRCUIT DESCRIPTION
.............
5-1
DETAILEDCIRCUIT DESCRIPTION
............5-1
TROUBLESHOOTING
...................................
6-4
Troubleshooting Techniques
......................
6-9
CORRECTIVEMAINTENANCE
..................6-10
MaintenancePrecautions
..........................
6-10
....................
Obtaining ReplacementParts
6-10
................................
PROBE DISASSEMBLY
6-11
..........................
Control Box Disassembly
6-11
CableAssembly Replacement
...................
6-12
.............................
Probe Tip Replacement
6-13
..................................
Button Replacement
6-13
READJUSTMENTAFTER REPAIR
..............
6-13
INSTRUMENTREPACKING
.........................
6-13
SECTION
6
MAINTENANCE SECTION
7
REPLACEABLE PARTS
INTRODUCTION
............................................
6-1
DIAGRAMS
STATIC-SENSITIVECOMPONENTS
...........
6-1
REPLACEABLEELECTRICALPARTS
PREVENTIVE MAINTENANCE
.....................
6-3
REPLACEABLEMECHANICAL PARTS
......................................................
Cleaning
6-3
OPTIONAL ACCESSORIES
........................................
Visual Inspection
6-4
..............................
SemiconductorChecks
6-4
LIST
OF
ILLUSTRATIONS
Figure
Page
...
The P6231 Probe
.............................................
VIII
Typical input impedance versus
frequency..
.......................................................
.I-6
Damaging effects of ground-
lead inductance
................................................
2-2
Reducing the effects of
ground-leadinductance
....................................
2-3
Controls, connectors, and
probe accessories
............................................
2-5
Example of reducedloading
............................
2-7
iii
LIST
OF
ILLUSTRATIONS
(cont)
Figure
Page
3-1 Offset-check setup
...........................................
3-4
3-2 High-frequency check setup
............................
3-4
4-1 P6231 adjustment locations
............................
4-5
.................................
5-1 Functionalblock diagram 5-2
.............................
6-1 Disassembly of control box 6-12
7-1 Main circuit-boardlayout.
7-2 Flexible circuit-boardlayout.
7-2 Component layout for trouble shooting.
LIST
OF
TABLES
Table
Page
................................
ElectricalCharacteristics
..I-2
.........................
Environmental Characteristics
1-5
................................
PhysicalCharacteristics.
..I-5
Typical Performance Effects
of Grounding Configurations
............................
2-6
Test Equipment Required
................................
3-2
Test Equipment Required
................................
4-2
RelativeSusceptibility To Static
Discharge Damage
...........................................
6-2
Troubleshooting Equipment
.............................
6-5
..............
Fault Indication and Probable Cause 6-5
OPERATORS SAFETY SUMMARY
The general safety information in this part of the summary isfor both operating and servicing personnel. Specijic warnings and
cautions will befound throughout the manual where they apply, but may not appear in this summary.
Terms In This Manual Do Not Operate In ExplosiveAtmospheres
WARNING
statements identify conditions or practices that TOavoid explosion, do not operate this product in any ex-
could result in personal injury or loss of life. plosive atmosphere unless it has been specifically certified
for such operation.
Do Not Remove Covers
CAUTION
statements identify conditions or practices that
To
avoid personal injury, do not remove the product cov-
could result in damage to the equipment or other property. ers. Do not operate the product without the covers prop-
erly installed.
SERVICE
SAFETY
SUMMARY
FOR
QUALIFIED
SERVICE PERSONNEL ONLY
Refer
also
to [he preceding Operators Safety Summary.
Do Not Service Alone Use Care When Servicing With
Power
On
-
Do not perform internal service or adjustment of this pro- To avoid personal injury, do not touch exposed connec-
duct unless another person is present and capable
of
tions and components while power is on.
renderingfirst aid and resuscitation.
vii
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