HP 16530A User manual

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HP 16530A/16531A
DIGITIZING OSCILLOSCOPE MODULE
Service Manual
FJ/0"1 HEWLETT
~~PACKARD

rf/pta HEWLETT
a!~ PACKARO
SERVICE MANUAL
HP 16531A 400 Msamplejs Digitizing
Oscilloscope Acquisition Card
AND
HP 16530A 400 Msamplejs Digitizing
Oscilloscope Timebase Card
@ COPYRIGHT HEWLETT-PACKARD COMPANY/COLORADO DIVISION 1987
1900 GARDEN OF THE GODS ROAD, COLORADO SPRINGS, COLORADO U.S.A.
Manual Part No. 16530-90901
Microfiche Part No. 16530-90801
ALL RIGHTS RESERVED
PRINTED: SEPTEMBER 1987

CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of
shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are
traceable
to the United States National Bureau of Standards, to the extent allowed by the Bureau's
calibration facility, and
to the calibration facilities of other International Standards Organization
members.
WARRANTY
This Hewlett-Packard product is warranted against defects in material and workmanship for a
period
of one year from date of shipment. During the warranty period, Hewlett-Packard Company
will, at its option, either repair or replace products which prove to be defective.
For warranty service or repair, this product must
be returned to a service facility designated by HP.
Buyer shall prepay shipping charges to
HP and HP shall pay shipping charges to return the
product to Buyer. However, Buyer shall pay all shipping charges, duties, and taxes for products
returned to
HP from another country.
HP warrants that its software and firmware designated by HP for use with an instrument will
execute its programming instructions when properly installed on that instrument. HP does not
warrant that the operation of the instrument or software, or firmware will be uninterrupted or error
free.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by Buyer, buyer-supplied software or interfacing, unauthorized modification
or
misuse, operation outside the environmental specifications for the product, or improper site
preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
EXCLUSIVE REMEDIES
THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. HP
SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, WHETHER BASED
ON CONTRACT, TORT, OR ANY OTHER LEGAL
THEORY.
ASSISTANCE
Product maintenance agreements and other customer assistance agreements are available for
Hewlett-Packard products.
For any assistance, contact your nearest Hewlett-Packard Sales and Service Office. Addresses are
provided
at the back of tf1is manual.
CWA584
------ --------~~--~~-~~-

SAFETY CONSIDERATIONS
GENERAL • This Is a Safety Class I Instrument (provided
with terminal for protective earthing).
OPERATION • BEFORE APPLYING POWER verify that the
power transformer primary
is matched to the available line
voltage, the correct fuse is installed, and Safety Precautions
are taken (see the following warnings). in addition, note the
instrument's external markings which are described under
"Safety Symbols."
IWARNING I
o Servicing instructions are for use by service-trained
personnel. To avoid dangerous electric shock, do not
perform any servicing unless qualified to do so.
o BEFORE SWITCHING
ON THE INSTRUMENT, the
protective earth terminal
of the instrument must be
connected to the protective conductor of the (mains)
powercord. The mains plug shall only
be inserted in a
socket outlet provided with a protective earth contact. The
protective action must not be negated
by the use of an
extension cord (power cable) without a protective
conductor (grounding). Grounding one conductor
of a two-
conductor outlet is not sufficient protection.
o If this instrument
is to be energized via an
auto-transformer (for voltage reduction) make sure the
common terminal is connected to the earth terminal of the
power source.
o
Any interruption of the protective (grounding) conductor
(Inside or outside the instrument) or disconnecting the
protective earth terminal will cause a potential shock
hazard that could result in personal injury.
o Whenever
it is likely that the protection has been impaired,
the instrument must be made inoperative and be secured
against any unintended operation.
o Only fuses with the required rated current, voltage, and
specified type (normal blow, time delay, etc.) should be
used. Do
not use repaired fuses or short circuited
fuseholders. To do so could cause a shock
or fire hazard.
o Do not operate the instrument in the presence
of flammable
gasses
or fumes. Operation of any electrical instrument in
such an environment constitutes a definite safety hazard.
o Do not Install substitute parts
or perform any unauthorized
modification to the instrument.
o Adjustments described
In the manual are performed with
power supplied to the instrument while protective covers
are removed. Energy available at many points may, If
contacted, result in personal injury.
o Any adjustment, maintenance, and repair
of the opened
Instrument under voltage should be avoided
as much as
possible, and when inevitable, should be carried out only by
a skilled person who Is aware of the hazard Involved.
o Capacitors Inside the instrument may still be charged even
If the Instrument has been disconnected from Its source of
supply.
SAFETY SYMBOLS
Instruction manual symbol. The product will be
marked with this symbol when It is necessary for
the user to refer to the Instruction manual in order
to protect against damage to the product.
Indicates hazardous voltages.
_J_ Earth terminal (sometimes used in manual to
indicate circuit common connected to grounded
chassis).
IWARNING I The WARNING sign denotes a hazard. It
calls attention to a procedure, practice,
or the like, which, if not correctly
performed
or adhered to, could result in personal injury. Do
not proceed beyond a WARNING sign until the indicated
conditions are fully understood and met.
r:::·:;;::::::::1 The CAUTION sign denotes a hazard. It
~J calls attention to an operatin~ procedure,
practice, or the like, which,
if not
correctly performed or adhered to, could result In damage to
or destruction of part or all of the product. Do not proceed
beyond a CAUTION sign until the Indicated conditions are
fully understood or met.
SC10984

16530/31 A- Table of Contents
TABLE OF CONTENTS
SECTION
PAGE
I. GENERAL INFORMATION ........................................................................ 1-1
1-1. Introduction ........................................................................... 1-1
1-2. Modules Covered By Manual ......................................................... 1-1
1-3. Safety Requirements .................................................................. 1-1
1-4. Product Description ................................................................... 1-2
1-5. Accessories Supplied
................................................................. 1-2
1-6. Accessories Available ................................................................. 1-2
1-7. Specifications ......................................................................... 1-2
1-8. Operating Characteristics
............................................................. 1-2
1-9. Recommended Test Equipment ...................................................... 1-2
II. INSTALLATION ................................................................................... 2-1
2-1. Introduction ........................................................................... 2-1
2-2. Initial Inspection ....................................................................... 2-1
2-3. Preparation For Use .................................................................. 2-1
2-4. Power Requirements ................................................................. 2-1
2-5. Installation ............................................................................. 2-1
2-6. Module Installation .................................................................... 2-2
2-7. Adding Acquisition Cards
............................................................. 2-5
2-8. Operating Environment
............................................................... 2-8
2-9. Storage
................................................................................ 2-8
2-1 0. Packaging ............................................................................ 2-8
2-11. Tagging For Service
.....................•............................................ 2-8
Ill. PERFORMANCE TESTS ......................................................................... 3-1
3-1. Introduction ........................................................................... 3-1
3-2. Recommended Test Equipment ...................................................... 3-1
3-3. Test Record
........................................................................... 3-1
3-4. Performance Test Interval ............................................................ 3-1
3-5. Performance Test Procedures ........................................................ 3-1
3-6. Bandwidth Test ....................................................................... 3-2
3-7. Voltage Measurement Accuracy Test
................................................ 3-6
3-8. Time Interval Measurement Accuracy Test
........................................... 3-9
3-9. Trigger Sensitivity Test .............................................................. 3-12
iv

---
HP 16530/31A-Table of Contents
SECTION PAGE
IV. ADJUSTMENTS .................................................................................. 4-1
4-1. Introduction ........................................................................... 4-1
4-2. Calibration Interval .................................................................... 4-1
4-3. Maintaining Calibration Integrity ...................................................... 4-1
4-4. Safety Requirements .................................................................. 4-1
4-5. Recommended Test Equipment ...................................................... 4-2
4-6. Instrument Warmup ................................................................... 4-2
4-7. Calibration ............................................................................. 4-2
4-8. Vertical Calibration .................................................................... 4-3
4-9. Trigger Level Calibration .............................................................. 4-4
4-10. Delay Calibration ..................................................................... 4-5
4-11. Channel-To-Channel Skew ........................................................... 4-6
4-12. Extender Board Installation ........................................................ 4-13
4-13. Adjustments ........................................................................ 4-16
4-14. Set to Default Values ............................................................... 4-16
4-15. DC Balance Adjustment ............................................................ 4-17
4-16. DC Matching Adjustment .......................................................... 4-19
4-17. Attenuator Compensation Adjustment ............................................. 4-21
4-18. HF Compensation Adjustment ..................................................... 4-23
V. REPLACEABLE PARTS .......................................................................... 5-1
5-1 . Introduction ............................................................................ 5-1
5-2. Abbreviations .......................................................................... 5-1
5-3. Replaceable Parts List ................................................................ 5-1
5-4. Ordering Information .................................................................. 5-1
5-5. Exchange Assemblies ................................................................ 5-1
5-6. Direct Mail Order System ............................................................. 5-2
VI. SERVICE .......................................................................................... 6-1
6-1. Introduction ............................................................................ 6-1
6-2. Safety Requirements .................................................................. 6-1
6-3. Recommended Test Equipment ...................................................... 6-1
6-4. Module Block Diagram and Theory Of Operation ................................... 6-1
6-5. Acquisition Card Theory of Operation ................................................ 6-3
6-6. Timebase Card Theory Of Operation ................................................. 6-4
6-7. Self Tests .............................................................................. 6-5
6-8. Troubleshooting ....................................................................... 6-9
6-9. Card Replacement .................................................................. 6-25
v
------------- ~-~----~-~----~

HP 16530/31A-Table of Contents
LIST OF TABLES
TABLE TITLE PAGE
1-1. HP 16530/31A Specifications ................................................................. 1-3
1-2.
HP 16530/31A Operating Characteristics .................................................... 1-5
1-3. Recommended Test Equipment
.............................................................. 1-10
3-1 . Performance Test Record .................................................................... 3-16
4-1 . Calibration Sequence .......................................................................... 4-2
4-2. Sequence of Adjustments
.................................................................... 4-16
5-1 . Reference Designators and Abbreviations .................................................... 5-3
5-2. Replaceable Parts
............................................................................. 5-4
LIST OF ILLUSTRATIONS
FIGURE TITLE PAGE
2-1 . Endplate Overhang ........................................................................... 2-2
2-2. Configuration Guide
.......................................................................... 2-2
2-3. Cable End
..................................................................................... 2-3
2-4. Cable Position
................................................................................. 2-3
2-5. Installation Summary
......................................................................... 2-4
2-6. Endplate Overhang
........................................................................... 2-4 ,.-.....,
2-7. Endplate Overhang ........................................................................... 2-5
2-8. Configuration Guide
.......................................................................... 2-5
2-9. Cable End
..................................................................................... 2-6
2-10. Cable Position ................................................................................ 2-6
2-11. Endplate Overhang
........................................................................... 2-7
3-1. Bandwidth Test Equipment Hookup
......................................................... 3-2
3-2. Startup Screen
................................................................................ 3-3
3-3. Channel Screen Configuration
............................................................... 3-3
3-4. Trigger Screen Configuration
................................................................. 3-4
3-5. Display Screen Configuration ................................................................. 3-4
3-6. Auto-Meas the vp-p
.......................................................................... 3-5
3-7. Channel Configuration ........................................................................ 3-6
3-8. Trigger Configuration ......................................................................... 3-6
3-9. Display Configuration
......................................................................... 3-7
3-10. Voltage Measurement Accuracy Test Equipment Hookup .................................. 3-7
3-11 . Set v/Div to +2 Volts ......................................................................... 3-8
3-12. Channel Configuration
....................................................................... 3-9
vi

HP 16530/31A-Table of Contents
LIST OF ILLUSTRATIONS
FIGURE TITLE
PAGE
3-13. Trigger Configuration ......................................................................... 3-9
3-14. Display Configuration
....................................................................... 3-1 0
3-15. Test Equipment Hookup .................................................................... 3-10
3-16. Auto Markers Configuration ................................................................. 3-11
3-17. Channel Configuration ...................................................................... 3-12
3-18. Trigger Configuration
........................................................................ 3-12
3-19. Display Configuration
....................................................................... 3-13
3-20. Trigger Sensitivity Test Equipment Hookup ................................................ 3-13
3-21. Auto-Meas the V p-p
........................................................................ 3-14
3-22. Trigger Screen and External Source
........................................................ 3-14
3-23. Test Equipment Hookup .................................................................... 3-15
4-1 . Startup Screen ................................................................................ 4-3
4-2. Vertical Cal Choice Screen ................................................................... 4-4
4-3. Trigger Level Cal Choice Screen ............................................................. 4-4
4-4. Delay Cal Equipment Hookup ................................................................ 4-5
4-5. Channel Screen 1Impedance Select ......................................................... 4-6
4-6. Channel Selection ............................................................................. 4-6
4-7. Channel to be Calibrated ..................................................................... 4-7
4-8. Input Label Field
.............................................................................. 4-7
4-9. Overlay Screen
................................................................................ 4-8
4-10. Insert Field
.................................................................................... 4-8
4-11. Insert Channel Labels
........................................................................ 4-9
4-12. Channel Screen
.............................................................................. 4-9
4-13. Channel to Channel Skew Equipment Hookup
............................................ 4-10
4-14. Run Option Select ........................................................................... 4-1 0
4-15. Overlayed Waveforms ....................................................................... 4-11
4-16. Channel to Channel Skew Equipment Hookup
............................................ 4-11
4-17. Channel for Skew Calibration ............................................................... 4-12
4-18. Card Endplate Overhang
.................................................................... 4-13
4-19. Connector End
.............................................................................. 4-14
4-20. Cable Position ............................................................................... 4-14
4-21. Installation Summary
........................................................................ 4-15
4-22. Startup Screen
............................................................................... 4-17
4-23. Set to Default Screen
........................................................................ 4-17
4-24. Component Location
........................................................................ 4-18
4-25. Offset Voltage Tick Marks
................................................................... 4-18
4-26.
De Matching Adjustment Equipment Hookup .............................................. 4-19
4-27. Square Wave Response
..................................................................... 4-20
4-28. Attenuator Compensation Adjustment Equipment Hookup ................................ 4-21
4-29. Square Wave Response ..................................................................... 4-22
4-30. HF Compensation Adjustment Equipment Hookup ........................................ 4-23
4-31. Impedance Select
........................................................................... 4-23
4-32. Channel Select Field
........................................................................ 4-24
4-33. Square
Wave Response ..................................................................... 4-25
4-34. Square
Wave Response ..................................................................... 4-25
vii
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