HP 5334B User manual

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5334B Universal Counter Service Manual
05334-90042
November 1, 1991

HP 5334B
Universal Counter
CllL FIRMWARE REV. 1.0
This manual applies to Serial Prefix 2937,
unless accompanied by a Manual Change
Sheet indicatingotherwise
SERVICE MANUAL
Copyright HEWLETT-PACKARDCOMPANY 1988
5301 STEVENS CREEK BOULEVARD,SANTA CLARA, CALIFORNIA 95051-7299
Q Printed on recycledpaper.

CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of sltipnent
from thefactory. Hewlett-Packard further certifies that its calibrationmeasurements are traceable to tlie United
States National Bureau of Standards, to the dent allowed by the Bureau's calibration facility, and to the
calibrationfacilities of other International Standards Otganizationmembers.
WARRANTY
This Hewlett-Packard instrument 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 instructionswhen properly installed on that instrument. HP does not warrant that the opera-
tion of the instrument, or software, or firmwarewill 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 of
the environmentalspecifications 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 PUR-
POSE.
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 CONSE-
QUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL
THEORY.
ASSISTANCE
Product maintenance agreerttertls and other customer assistance agreements are availablefor Hewlett-Packard
products.
For any assistance, contactyour nearest Hewlett-Packard Sales and Service Office.Addresses are provided at
the back of this manual.

SAFETY CONSIDERATIONS
GENERAL
This product and related documentation must be reviewed for familiarization with safety markingsand
instructions before operation.
This product is a Safety Class
I instrument (providedwith a protective earth terminal).
BEFORE APPLYING POWER
Verify that the product is set to match the available line voltage and the correct fuse is installed. Refer
to Section II, Installation.
SAFETY EARTH GROUND
An uninterruptible safety earth ground must be provided from the mains power source to the product
input wiring terminals or supplied power cable.
SAFETY SYMBOLS
Instruction manual symbol; the The WARNING sign denotes a hazard. It cails
product will be marked with this attention to a procedure, practice, or the like.
symbol when it is necessaryfor the which, if not correctly performed or adhered to,
user to refer to the instruction could result in personal injury. Do not proceed
manual. beyond a WARNING sign until the indicated
4
. . conditions are fully understood and met.
Indicates hazardous voltages.
a The CAUTION sign denotes a hazard. It calls
lndicates terminal is connected attention to an operating procedure, practice, or
/jS7 OR
to chassis when such connection the like, which, if not correctly performed or
is not apparent. adhered to, could result in damage to or
destruction of part or all of the product. Do not
Alternating current. proceed beyond a CAUTION sign until the
indicated conditions are fully understood and met.
- - - Direct current.
SAFETY INFORMATION
I]
Any interruption of the protective grounding conductor (insideor outside the instrument)or discon-
necting the protective earth terminal will cause a potential shock hazard that could result in personal
injury. (Groundingone conductor of a two conductor outlet is not sufficient protection.)
Whenever it is likely that the protection has been impaired, the instrument must be made inoperative
and be secured against any unintended operation.
If this instrumentistobeenergizedviaan autotransformer (forvoltage reduction
I makesurethecommon
terminal is connected to the earthed pole terminal (neutral)of the power source.
Instructions for adjustments while covers are removed and for servicing are for use by service-trained
personnel only. To avoid dangerous electric shock, do not perform suchadjustments or servicing unless
qualified to do so.
For continued protection against fire, replace the linefuse(s~only with
250V fuse(s)of the same current
rating and type (forexample, normal blow, time delayi. Do not use repaired fuses or short circuited
fuseholders.
When measuring power line signals, be extremely careful and always use a step-down isolation trans-
former whose outputvoltage is compatible with the input measurement capabilitiesof this product.This
product's front and rear panelsare typically at earth ground, so
NEVER TRY TO MEASURE AC POWER
LINE SIGNALS WITHOUT AN ISOLATION TRANSFORMER.
HP 5334B - Service Manual
...
111

TABLE OF CONTENTS
SECTION 4 PERFORMANCE TESTS
Introduction ................................................................................ 4.1
Equipment Required
......................................................................... 4.1
Operational VerificationRerformance Test Record
.............................................. 4.1
Calibration Cycle
............................................................................ 4.1
Test Procedures
............................................................................. 4.1
Operational Verification Tests
................................................................ -4-2
4.15 . Preliminary Procedure .............................................................. 4.2
Power-up Self-Testmiagnostic Mode
........................................................... 4.3
Read Levels
................................................................................ -4-4
Ratio A/B .................................................................................. 4.5
Frequency ..................................................................................4.6
Input Signal Conditioning Check
............................................................... 4.6
T.I. A-+B
................................................................................... 4.8
Auto Trigger ................................................................................4.9
Channel C (Option 030)
...................................................................... 4.10
Performance Tests ...........................................................................4.12
4.27 . Preliminary Procedure
............................................................... 4.12
Channel A Frequency Response and Sensitivity Test, 10 Hz-20 MHz
............................... 4.13
Channel
B Frequency Response and Sensitivity Test, 10 Hz-20 MHz ............................... 4.16
Channel A Frequency Response and Sensitivity Test, 80 MHz-100 MHz
............................ 4.17
Channel
B Frequency Response and SensitivityTest, 80 MHz-100 MHz ............................4.20
Channel A Frequency Response and Sensitivity Test, 80 MHz-100 MHz
............................ 4.21
Channel
B Frequency Response and SensitivityTest, 80 MHz-100 MHz ............................ 4.23
Period A Test
.............................................................................. -4-24
Pulse Width A Test .......................................................................... -4-26
Time Interval A to B Test ..................................................................... 4.28
Time Interval A to
B Delay Test ............................................................... 4.29
Ratio
A/B Test .............................................................................. 4.30
Risepall Time A Test ....................................................................... -4-32
Channel C Frequency Response and SensitivityTest .............................................. 4.34
HP-IB Verification Test ......................................................................4.39
SECTION 5 ADJUSTMENTS
Introduction ................................................................................ 5.1
SafetyConsiderations
....................................................................... -5-1
Equipment Required ......................................................................... 5.3
Factory-Selected Components
................................................................. 5.3
Related Adjustments
......................................................................... 5.3
Power Supply Voltage Adjustment
............................................................. 5.3
Digital-to-Analog Converter (DAC)
A/B Zero Adjustment ........................................ 5.4
Digital-to-Analog Converter (DAC)
A/B Gain Adjustment ........................................ 5.5
10MHz Reference Oscillator Frequency Adjustment
............................................. 5.7
Channel A Sensitivity OffsetAdjustment
........................................................ 5.9
Channel B Sensitivity Offset Adjustment
........................................................ 5.11
Multiple-Register Counter (MRC) Input Adjustment, Ch A .......................................5.13
Multiple-Register Counter (MRC) Input Adjustment, Ch
B .......................................5.15
Attenuator Adjustment
....................................................................... 5.17
Channel C Peak Detector Adjustment, Option 030 ............................................... 5.19
HP 5334B . ServiceManual
iv

SECTION 6 REPLACEABLE PARTS
................................................................................. 6.1 . Introduction 6.1
...............................................................................
.
............................................................................
6-3 Abbreviations 6.1
6-5
. Replaceable Parts 6.3
...................................................................
6.8 . Illustrated Parts Breakdown 6.3
........................................................................
6-10 . Ordering Information 6.3
SECTION 7 MANUAL CHANGES
................................................................................
7.1 . Introduction 7.1
.............................................................................
7.3 . Manual Changes 7.1
SECTION 8 SERVICE
................................................................................
Introduction 8.1
.......................................................................
Safety Considerations -8-1
...................................... ...................................
Circuit Descriptions : 8.2
.............................................................................
Troubleshooting -8-2
..........................................................................
8.10 . General 8.2
.....................................................................
8.12 . Signal Tracing 8.2
..................................................................
8.14 . SignatureAnalysis 8.2
...............................................................
RecommendedTest Equipment 8.3
........................................................................
ServiceTools and Aids 8.3
....................................................................
8.21 . Parts Locations 8.3
.................................................
8.23 . Adjustment and Test Point Locations 8.3
...............................................
8.25 . ServiceAids on Printed Circuit Boards 8.3
..............................................................
8.27 . Pozidriv Screwdrivers 8.3
.....................................................................................
Repairs 8.3
.....................................................
8.30 . CleaningPrinted-CircuitBoards 8.3
.............................................
8.32 . Disassembly and Reassembly Procedures 8.4
...........................................................
8.34 . Post-Repair Adjustments 8.4
..................................................
8.36 . Post-ServiceProduct Safety Checks 8.4
.....................................................................
SchematicDiagram Notes 8.4
.............................................................
8.43 . Reference Designations 8.4
........................................
8.45 . IdentificationMarks on Printed Circuit Boards 8.4
...............................................................................
Logic Symbols 8.7
.........................................................
8.51 . General Qualifying Symbols 8.7
..............................................................
8.53 . Gate Symbols : ...... 8.9
............................................
8.55 . QualifyingSymbols for Inputs and Outputs 8.9
..........................................
8.57 . QualifyingSymbols for Internal Connections 8.10
..........................................................
8.59 . Symbols Inside the Outline 8.10
..............................................................
8.61 . Dependency Notation 8.12
....................................................................
8.64 . Control Blocks 8.13
.....................................................
8.66 . Logic Device Notation Example 8.14
................................................................................
Logic Levels 8.15
.........................................................................
Theory Of Operation 8.15
..........................................................................
8.72 . General 8.15
..........................................................
8.80 . Executive Block Assembly 8.16
.......................................................
8.82 . Measurement Block Assembly 8.16
.....................................................
8.84 . Input Amplifier Block Assembly 8.16
..............................................................
8.86 . DAC Block Assembly 8.16
.........................................................
8.88 . Time Base Block Assembly 8.16
HP 5334B
. Service Manual
v

SECTION 8 SERVICE (Continued)
.............................................................
8.90 . HP-IB Block Assembly 8.16
.......................................................
8.92 . Power Supply Block Assembly 8.17
........................................
8.94 . Channel C Input Block Assembly (Option 030) 8.17
..........................................
8.96 . MATE (CIIL) Block Assembly (Option700) 8.17
................................................
8.98 . Oven Oscillator Module (Option 010) 8.17
.....................................................
8.100 . A2 Front Panel Board Assembly 8.17
..................................................................
8.102 . Detailed Theory of Operation 8.17
........................................................................
8.104 . Input Amplifier Block 8.17
8-108 Input Amplifier Block Circuit Description (Channel A)
................................. 8.18
......................................................
8.134 . Digital-to-AnalogConverter (DAC) Block 8.20
............................................
8.138 . DAC Block Circuit Description (DAC A) 8.20
.............................................................................
8.157 . Executive Block 8.22
..................................................
8.162 . Executive Block Circuit Description 8.23
..........................................................................
8.170 . Measurement Block 8.24
..............................................
8.174 . Measurement Block Circuit Description 8.24
............................................................................
8.196 . Time Base Block 8.28
.................................................
8.198 . Time Base Block Circuit Description 8.28
...............................................................................
8.206 . HP-IB Block -8-29
....................................................
8.212 . HP-IB Block Circuit Description 8.29
................................................
8.218 . Power-upRESET Circuit Description 8.30
..........................................................................
8.220 . Power SupplyBlock 8.30
..............................................
8.223 . Power SupplyBlock Circuit Description 8.30
............................................................
8.226 . ChannelC Input Block (Option 030) 8.30
............................................
8.231 . Channel C Input Block Circuit Description 8.30
........................................................................
8.239 . A2 Front Panel Board 8.31
............................................
8.242 . A2 Front Panel Board Circuit Description 8.32
.............................................................
8.246 . MATE (CIIL) Block (Option 700) 8.32
.............................................
8.251 . MATE (CIIL) Block Circuit Description 8.33
..........................................................
8.259 . Oven Oscillator Module (Option 010) 8.33
..................................................................
8.280 . Disassembly and Reassembly 8.37
............................................................................
8.282 . Cover 8.38
.............................................
8.284 . A1 Main Board Removal and Installation 8.38
....................................
8.287 . A2 Front Panel Assembly Removal and Installation 8.38
.............................................................................
8.292 . Troubleshooting 8.39
.......................................................
8.297 . Electrostatic Discharge (ESD) 8.40
.....................................................................
8.299 . Signal Tracing 8.40
................................................................
8.302 . Power SupplyTroubleshooting 8.41
...............................................................
8.306 . Input Amplifier Troubleshooting 8.42
.............................................
8.345 . Digital-to-AnalogConverter (DAC) Troubleshooting 8.48
..........................................
8.353 . Troubleshooting the DAC SwitchingSection 8.50
...........................................................
8.358 . Measurement Block Troubleshooting 8.51
..............................................................
8.366 . Executive Block Troubleshooting 8.53
............................................................
8.371 . Front Panel Block Troubleshooting 8.53
...............................................................
8.376 . Time Base Troubleshooting ... :
8.54
....................................................
8.381 . TroubleshootingOption 010 Oven Oscillator 8.54
........................................................................
8.382 . Inspection 8.54
............................................
. 8.384 Special Parts Replacement Considerations 8.54
.............................................................
8.386 . SpecialTest Connector 8.55
..................................................................
8.390 . Types of Failures 8.57
HP 5334B . Service Manual
vi

SECTION 8 SERVICE (Continued)
8.397 . Disassembly for Troubleshooting ..................................................... 8.58
....................................................
. ..........................................................................
8.400 Option 010 Oven Controller Troubleshooting 8.59
.
8.401 General 8.59
.................................................................
8.405 . Normal Operation 8.59
..............................................................
8.407 . TroubleshootingTree 8.60
...........................................................
8.411 . TroubleshootingCautions 8.60
...................................................
8.414 . Option 010 Oscillator Circuit Troubleshooting 8.63
.................................................................
8.416 . Normal Operation 8.63
...................................................................
8.418 . Troubleshooting 8.63
....................................................................
8.421 . Helpful Hints -8-63
......................................................
8.427 . Output Amplitude Adjustment 8.65
.................................................................
8.431 . HP-IB Block Troubleshooting 8.67
.........................................................
8.438 . Option 030 Channel C Troubleshooting 8.70
.................................
8.441 . Determiningthe Failed Circuit in the Channel C Block 8.71
..........................................
8.445 . Troubleshootingthe 30 dB Amplifier Circuit 8.72
8.447
. Troubleshootingthe Divider Circuit .................................................. 8.73
............................................
8.449 . Troubleshootingthe Peak Detector Circuit 8.74
..................................
8.451 . Troubleshootingthe Peak Detector Diode 8.74
.................................
8.453 . Troubleshootingthe Threshold Comparator 8.74
...........................................................................
8.456 . SignatureAnalysis 8.75
8.459
. Executive and HP-IB Block SignatureAnalysis Troubleshooting ......................... 8.76
......................................................
8.461 . Option 700 MATE Block Troubleshooting 8.80
..................................................
8.464 . Self-Test and Basic Signal Checking 8.80
......................................
8.465 . MATE Block Signature Analysis Troubleshooting 8.82
..............................................
8.468 . SignatureAnalysis Setup #1
8.82
..............................................
8.469 . SignatureAnalysis Setup #2 8.84
..............................................
8.470 . SignatureAnalysis Setup #3 8.87
8.472
. MATE SignatureAnalysis Summary ........................................ 8.89
...............................................................
8.475 . Field Installationof Option 010 -8-89
HP 5334B . Service Manual
vii

LlST OF TABLES
Table
page a
............................................
4.1 . HP 5334B O~erationalVerificationTest Record 4-11
4.2
. HP 5334B PerformanceTest Record Card ................................................. 4-37
4.3
.
HP 5334B HP-IB VerificationTest Record Card ............................................ 4-44
4.4
. HP-IB Operational Verification Program Listing ............................................ 4-45
..................................................................
5.1 . Adjustable Components 5-2
5.2
. Post-Repair Adjustments ................................................................. 5-3
.................................................
6.1 . Reference Designations and Abbreviations 6-2
....................................................................... 6.2 . Replaceable Parts 6-4
.................................................................
6.3 . ManufacturersCode List 6-20
................................................................... 7.1 . HP 5334B Backdating 7-1
..............................................................
General QualifpgSymbols 8-8
.................................................
QualifyingSymbols for Inputs and Outputs
8-10
.................................................
QuwgSymbols for Internal Connections
8-10
................................................................
Symbols Inside the Outline 8-11
............................... ........................
Summary of DependencyNotation : 8-12
........................................................
Examples of DependencyNotation 8-13
............................................................................
Logic Levels 8-15
........................................................
Power SuppliesResistanceChecks 8-41
.....................................................................
DC Voltages Check 8-41
............................................................
Temperature Set Resistor List 8-55
...................................................................
Oven Circuit Voltages 8-61
........................................................
Oscillator Section Normal Voltages 8-64
LlST OF FIGURES
Figure Page
..............................................................
Time Base Reference Setup 4-13
..................................
ChannelA Frequency and SensitivitySetup. 10 Hz - 20 MHz
4-14
..................................
ChannelB Frequency and SensitivitySetup. 10 Hz - 20 MHz
4-16
.................................
ChannelA Frequencyand SensitivitySetup. 80 Hz - 100 MHz
4-18
.................................
ChannelB Frequencyand SensitivitySetup. 80 Hz - 100 MHz
4-20
....................................
ChannelA Frequency and SensitivitySetup for Option 060
4-21
....................................
ChannelB Frequency and SensitivitySetup for Option 060
4-23
.....................................................................
Period A Test Setup 4-24
................................................................
PulseWidth A Test Setup
4-26
..........................................................
Time Interval A to B Test Setup
4-28
.....................................................
Time Interval A to B Delay Test Setup
4-29
....................................................................
Ratio A/B Test Setup 4-30
..............................................................
Rise/Fall Time A Test Setup
4-32
........................................
HP 5334B ChannelC Frequency and SensitivitySetup
4-34
............................................................
HP-IB Verification Test Setup 4-40
HP 5334B . Service Manual
...
Vlll

LIST OF FIGURES (Continued)
Figure Page
5.1 .
+ 3 Volt Power Supply Adjustment Setup .................................................. 5-4
5.2 .
DAC A/B Zero Adjustment Setup ......................................................... 5-5
. *
.........................................................
DAC A/B Gain Adjustment Setup 5-6
Standard Oscillator Adjustment Setup ..................................................... 5-7
Option 010 Oscillator Adjustment Setup ................................................... 5-8
........................................................
Channel A SensitivityAdjust Setup 5-10
........................................................
Channel B SensitivityAdjust Setup 5-11
......................................................
MRC Input AdjustIChannelA Setup 5-13
.......................................................
MRC Input AdjustlChannel B Setup 5-15
.............................................................
Attenuator Adjustment Setup 5-18
..................................................................
Square Wave Overshoot 5-19
..........................................
Option 030 ChannelC Peak Detector Adjust Setup 5-20
................................................................
6.1 . HP 5334B Exploded View 6-21
.............................................................................
6.2 . Front View 6-22
............................................................................
6.3 . Rear View -6-22
................................................................
. 8.1 SchematicDiagram Notes 8-6
8.2
. Gate Symbols ........................................................................... 8-9
..................................................................
.
8.3 Common Control Block 8-13
..........................................................
.
8.4 3-StateBidirectionalTransceiver 8-14
.............................................................
.
8.5 Interpolator Timing Diagram 8-25
........................................................
.
8.6 Expanded Interpolator Error Pulse 8-26
....................................................
8.7 . Oven Oscillator Overall Block Diagram 8-35
.................................................................
.
* .
8.8 SpecialTest Connector -8-56
...........................................................
. 8.9 Oven Controller Block Diagram 8-61
....................................................................
. 8.10 TroubleshootingTree 8-62
......................................................
8.11 . Output Amplitude Adjustment Setup 8-67
.....................................................
8.12 . Channel C Troubleshooting Flowchart 8-71
8.13
. ExecutiveBlock Signatures ............................................................... 8-77
8.14
. HP-IB Block Signatures .................................................................. 8-79
8.15
. HP 5334B. Option 700 Signaturesfor Setup 1 ............................................... 8-83
8.16
. HP 5334B. Option 700 Signaturesfor Setup 2 ............................................... 8-85
...............................................
8.17 . HP 5334B. Option 700 Signaturesfor Setup3 8-88
8.18
. HP 5334B Overall Block Diagram .......................................................... 8-93
8.19
. A1Main Board Component Locator ....................................................... 8-94
8.20
. PI0 A1 Main Board Input Amplifier Block Schematic Diagram ................................ 8-95
8.21 . PI0 A1 Main Board DAC Block SchematicDiagram ......................................... 8-97
8.22
. PI0A1 Main Board Executive/Measurement Block Schematic Diagram ........................ 8-99
........................................
8.23 . PI0 A1Main Board HP-IB Block Schematic Diagram 8-101
........................ 8.24 . PI0 A1 MainBoard TimebaseIPower Supply Blocks SchematicDiagram 8-103
.............................
8.25 .
PI0A1Main Board Option 700 MATE Block Schematic Diagram 8.105
.......................... 8.26 . P/O A1Main Board Option 030 Channei C Block Schematic Diagram 8-107
........................................
8.27 . Option 010 Oven Oscillator Block Schematic Diagram 8-109
............................................
.
8.28 A2 Front Panel Board Block SchematicDiagram 8-111
HP 5334B
. Service Manual
ix

SECTION 4
PERFORMANCETESTS
4-1. INTRODUCTION
4-2. Theprocedures in this section provide three groups of tests to check for proper operation of the HP5334B
Universal Counter. Thefirst is a quick method of verifying the basic functioning of the counter when its normal
operation is in question. Thesecond is a complete test of the instrument's electrical performance using the speci-
fications of
Table 1-1 as the performance standards. And the third is an HP-IB verification test using either the HP
9000 Series200/300 computer or the HP85A computer as a controller. All tests can be performed without access to
the interior of the instrument.
4-3. EQUIPMENT REQUIRED
4-4. Equipment required for the performance tests is listed in Table 1-4, Recommended Test Equipment. Any
equipment that satisfies the critical specifications given in the table may be substituted for the recommended
model(s).
4-5. OPERATIONAL VERIFICATION/PERFORMANCE TEST RECORD
4-6. Results of the operation verification tests may be recorded on a copy of the Operational VerificationTest
Record which follows the verification tests,
Table 4-1. The results of the complete performance tests may be
recorded on a copy of the Performance Test Record which follows the performance tests,
Table 4-2.
e
4-7. CALIBRATION CYCLE
4-8. To maintain the HP5334B in optimum operating condition, depending on the use and environmental con-
ditions, it is suggested that the instrument be checkedusing the tests at least once each year. The
Counter's reference oscillator must be checked and adjusted, if necessary, to a house frequency standard before
beginning the performance tests. Refer to Adjustment Procedure 5-15in Section V of this manual. Follow the
preliminary instructions given in the INTRODUCTION and SAFETY CONSIDERATIONS paragraphs in Sec-
tion
V.
4-9. Additionally, to maintain peak instrument performance between yearly checks, the instruments containing
the standard time base crystal oscillator, i.e., all non-Option
010 units, should be adjusted every 3 months to a
house frequency standard using Adjustment Procedure 5-15, Reference Oscillator Adjustment in Section V of
this manual. Again, refer to the preliminary instructions before beginning the adjustment procedure.
4-10. TEST PROCEDURES
4-11. It is assumed that the person performing the followingtests understands how to operate the specified test
equipment. Equipment settings, other than those for the Universal Counter, are stated in general terms. It is also
assumed that the person performing the tests will supply whatever cables, connectors, and adapters that are
necessary.
HP 5334B - Service Manual
4-
1

4-12. OPERATIONAL VERIFICATION TESTS
4-13. The
is intended
performing
tests included here are not as thorough and exhaustive as the performance tests. This group of tests
only to serve as a method for giving the operator a high degree of confidence that the instrument is
properly. No attempt is made to check the specifications of the instrument.
4-14. These tests are useful for incoming QA or as a first check on an instrument suspected of having a
problem.
4-1 5. Preliminary Procedure
CAUTION
Before the Universal Counter is switched on, it must be set to the
same line voltage as the power source or damage to the instrument
may result. For details, see Power Requirements, Line Voltage Selec-
tion,. Power Cable, and associated warnings and cautions in Section
I1
of the Operating and Programming Manual.
NOTE
To avoid confusion, each test procedure begins with a REINITIALIZATION
of the instrument. This simply means switching the HP 53348 to STANDBY
and then to ON.
Procedure:
1. Set the HP5334B as follows:
POWER ................................................................................................................. STANDBY
TIME BASE .......................................................................................................... INT (rear panel)
2. Connect the HP5334B as follows:
HP 5334B Power Cable ....................................................................................... to Line Voltage
Observe: STANDBY LED is ON.
3.
Do not connect an input signal to the HP5334B.
HP 5334B - Service Manual
4-2

4-1 6. POWER-UP SELF-TEST/DlAGNOSTlC MODE
Description: During the power-up sequence, the HP 5334B performs a fairly thorough check of major com-
ponents.
Procedure:
1. Set the HP5334B as follows:
POWER
.................................................................................................................ON
Observe: STANDBY LED goes out.
2.
All front panel LEDs light momentarily (except STANDBY LED which does not light and ARM and
GATE annunciators which flash alternately).
3.
The instrument's model number, "HP 5334b", is displayed.
4.
The instrument's HP-IB address is displayed. (Address "03" is set at the factory but can be set by the user to
addresses
"00" to "30").
5. If the instrument successfullyexecutes the power-up self-test routine, the front panel displays "PASS" and
then defaults to preset conditions.
Front Panel Preset Conditions:
9 Digit Display ....................................................................................................... all dashes
......................................................................................................
Hz annunciator ON
PRESET annunciator
........................................................................................... ON
FREQ A
................................................................................................................ ON
.........................................................................................................
AUTO TRIG ON
.................................................. Channel A and B TRIGGER LEVEL LEDs Flash Alternately
.............................................................................................
All Other Indicators OFF
Test Record: Mark Pass or Fail on the Operational Verification Test Record Card, line 1.
What Checked:
1.
Thethree microcomputers perform a ROM and RAM check.
2.
The alternately flashing ARM and GATE annunciators indicate that the Measurement microcomputer pas-
ses the ROM/RAM test.
3. The Executive microcomputer runs the front panel display check.
4.
The Executive and Measurement microcomputers perform a limited InputIOutput port check.
5. The Measurement microcomputer checks for the presence of a time base oscillator.
6.
A test of the ~~lti~le-~e~isterCounter (MRC) is made to check for basic operation.
HP
5334B - Service Manual
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7.
A handshake communication test is performed between the Executive and Measurement and the Executive
and HP-IB microcomputers.
8.
The Executive microcomputer reads the HP-IB address from the CMOS RAM and displays it to the front
panel.
For Failures: Any failures during the power-up cycle will disable the counter and produce a display of a num-
bered Error or Fail message. For a description of failuremessages, refer to Error Indicationsin Section
111 of
the Operating and Programming Manual.
Additional Comments: The HP 5334B can be put into a diagnostic mode where it repeatedly cycles through the
power-up self tests. This is accomplished by pressing the RESETLOCAL key while switching the power ON.
The tests are repeated until the power is switched to STANDBY.
NOTE
Inthe diagnostic mode, neither the instrument model number nor the HP-IB
address is displayed.
4-17. READ LEVELS
Description: Checking the operation of the READ LEVELS function can indicate the health of several circuits
criticalto the operation of the counter.
Procedure:
1.
Set the HP 5334B as follows:
Reinitializethe 5334B.
No Input Signal.
READ LEVELS
................................................................................................. Trigger Levels
(Press once to display trigger level settings, indicated on the display by an
"L" in the place of the ex-
ponent value.)
2. Rotate each front panel TRIGGER LEVELISENS control fully counterclockwise, then fully clockwise.
Observe: The voltage extremes displayed should be less than - 5V and greater than + 5V, respectively.
3. From the fully clockwise position, slowly rotate each control counterclockwise, then clockwise past the mid-
point position where the displayed voltage is approximatelyOV.
Observe: Each trigger light should turn on then off as the polarity level changes between + 100 mV and
- 100 mV.
4. Adjust each control for a setting of
+ 2.54V, and then - 2.54V.
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Observe: These exact settings should be possible with the voltage reading increasing or decreasingin 0.02V
steps.
5. Set the HP53348 as follows:
SENS
....................................................................................................................... ON
Observe: Both trigger level settings should display 0.OOV.
Test Record: Mark Pass or Fail on the Operational VerificationTest Record Card, line 2.
What checked:
1.
In the READ LEVELS mode, the Digital-to-Analogcircuitry and the Measurement microcomputer are
operatingwhile the Input Amplifier and Multiple-Register Counter circuitry are inactive.
2. The DAC circuitry and the Measurement Data Bus are operating properly if the
+ 2.54V settings can be ob-
tained.
3. If all tests are passed, the likelihood is high that the DACs, operational amplifier loops, the Read Level com-
parators, the analog switches(all are DAC circuitry components),and the front panel pots are operating
properly.
For Failures: If any failures are encountered in this test, refer to Section VIII of this manual. The Digital-to-
Analog Block is a likely candidate as a startingpoint for troubleshooting. Other circuit blocks involved are the
Measurement,Executive, and Front Panel blocks.
4-18. RATIO A/B
Description: This test uses the time base oscillator to drive the A and B input amplifier in a test of the Multiple-
Register Counter (MRC).
Procedure:
1. Connect the rear panel TIME BASE oscillator signal to the Channel A Input.
2.
Set the HP 5334B as follows:
Reinitialize the 5334B.
COM A ................................................................................................................... ON
AUTO TRIG
......................................................................................................... OFF
.............................................................................. TRIGGER LEVEL controls midpoint setting
............................................................................................
CHAN A and B 50R ON
......................................................................................................... GATE TIME 1 Second
FUNCTION
........................................................................................................... RATIO A/B
Observe: The HP 5334B front panel displays 1 000 000 0 MHz k 0.2 Hz and both trigger lights are flashing.
Test Record: Mark Pass or Fail on the Operational VerificationTest Record Card, line 3.
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What Checked:
1.
The operation of the MRC is checked using the ratio function.
2. The 10MHz oscillator signal at the rear panel BNC connector is verified.
For Failure: Refer to SectionVIII of this manual. The Measurement Block contains the MRC (Multiple-
Register Counter) and other blocks involved are the Input Amplifier, Executive,Front Panel, and Time
BasePower Supplyblocks.
4-19. FREQUENCY
Description: Using this test, a frequencyis measured which will exercise the interpolators.
Procedure:
1. Connect the rear panel TIME BASE oscillator signalto the ChannelA Input.
2. Set the HP5334B as follows:
Reinitializethe 5334B.
Observe: The HP5334B front panel displays 10.000 000 0 MHz a 0.2 Hz.
Test Record: Mark Pass or Fail on the Operational Verification Test Record Card, line 4.
What Checked: The interpolators which provide the accuracy of the frequencycount are tested. Defectiveinter-
polators may cause the reading to vary up to
+ 100 Hz.
For Failure: Refer to Section VIII of this manual. The interpolators are part of the Measurement Block. Other
blocks involved here are the Input Amplifier,DAC, Executive, Front Panel, and Time BasetPower Supplyblocks.
4-20. INPUT SIGNAL CONDITIONING CHECK
Description: This series of checks performs a functionaltest of the front panel relays and circuitry associated
with those relays.
Procedure:
1.
Connect the rear panel TIME BASE oscillator signal to the Channel A Input.
2. Set the HP5334B as follows:
Reinitializethe 5334B.
AUTO TRIG ......................................................................................................... OFF
COM A
................................................................................................................... ON
CHAN A and B 50n
............................................................................................ ON
GATE TIME
......................................................................................................... 1 Second
3. Adjust both TRIGGER LEVELISENS controls clockwise until trigger lights just go off.
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4.
Set the HP 5334B as follows:
COM A
................................................................................................................... OFF
CHAN A and
B 500 ............................................................................................ OFF
Observe: The HP 5334B front panel displays 10.000 000 0 MHz + 0.2 Hz. Channel A trigger light flashing
and Channel
B light not flashing.
5.
Set the HP 5334B asfollows:
CHANA 50i2 ........................................................................................................ ON
Observe: The HP 5334B front panel displays all dashes and Channel A trigger light stops flashing.
6. Set:
........................................................................................................
CHAN A 50R OFF
Observe: Condition prior to switchingin 50R impedance.
7. Set: CHAN A
XI0 A'ITN ........................................................................................... ON
Observe: The HP 5334B front panel displaysall dashes and Channel A trigger light stops flashing.
8. Set:
........................................................................................... CHAN A XI0 ATTN OFF
Observe: Condition prior to switchingin XI0 attenuator.
9. Set:
100 kHz FILTER A .............................................................................................. ON
Observe: The HP 5334B frontpanel displaysall dashes and Channel A trigger light stops flashing.
10. Set:
.............................................................................................. 100 kHz FILTER A OFF
Observe: Condition prior to switching in 100 kHz Filter.
11. Set:
................................................................................................................... COM A ON
........................................................................................................... FUNCTION FREQ B
Connect the rear panel TIME BASE oscillator signal to the Channel B Input.
Observe: The HP 5334B front panel stops updating and the trigger lights stop flashing.
12. Set:
................................................................................................................... COM A OFF
Observe: The HP 5334B front panel displays 10.000000 0 MHz 2 0.2 Hz. Channel B trigger light flashing
and Channel A trigger light not flashing.
13. Set:
CHAN B 50R ........................................................................................................ ON
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Observe: The HP 5334B front panel displays all dashesand Channel B trigger light stops flashing.
14. Set: CHAN
B 500 ........................................................................................................ OFF
I
Observe: Conditionprior to switching in 50n impedance.
15. Set: CHAN B XI0 ATTN
........................................................................................... ON
Observe: The HP 5334B front panel displays all dashesand Channel B trigger light stops flashing.
16. Set: CHAN
B XI0 ATTN ........................................................................................... OFF
Observe: Condition prior to switchingin XI0 A'ITN.
Test Record: Mark Pass or Fail on the Operational Verification Test Record Card, line 5.
What Checked: Relays and circuitry.
For Failures: Refer to Section VIII of this manual. The Input Amplifier and Executive Blocks are the main com-
ponents of this test. Other blocks involved are DAC, Measurement, and Front Panel blocks.
4-21. T.I. A+B
Description: Slopeswitch verification.
Procedure:
1. Connect the rear panel TIME BASE oscillator signal to the Channel A Input.
2. Set the
HP 5334B as follows:
Reinitialize the 5334B.
C0M.A ................................................................................................................ ON
TRIGGER LEVEL controls
.............................................................................. set to OV + 0.2V
using READ LEVELS "L" mode
AUTO TRIG
......................................................................................................... OFF
CHAN A and B 500 ............................................................................................ ON
GATE TIME
......................................................................................................... 1 Second
FUNCTION
........................................................................................................... T.I. A+ B
Observe: The HP 5334B front panel displays 0 ns +- 6 ns.
3. Set both:
ChannelA and B Negative SLOPE
.................................................................. ON
(Counter now triggers on negative slope.)
Observe: The HP5334B front panel displays 0 ns +- 6 ns.
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4. Set:
..........................................................................
Channel A to Negative SLOPE OFF
-
..........................................................................
Channel B to Negative SLOPE ON
Observe: The HP5334B front panel displays 50 ns + 6 ns.
5. Set:
..........................................................................
Channel A to Negative SLOPE ON
..........................................................................
Channel B to Negative SLOPE OFF
Observe: TheHP5334B front panel displays 50 ns + 6 ns.
Test Record: Mark Pass or Fail on the Operational Verification Test Record Card, line 6.
What Checked: Time interval measurement and slope switch operation.
For Failures: Refer to Section VIII of this manual. In this case, the Input Amplifier, DAC, Measurement, Execu-
tive, Front Panel, and Time Basepower Supply blocks are involved.
4-22. AUTO TRIGGER
Description: TheMeasurement microcomputer sends a signal to the DAC block and disables the front panel trig-
ger level controls.
Procedure:
1.
Connect the rear panel TIME BASE oscillator signal to the Channel A Input.
2.
Set the HP5334B as follows:
Reinitialize the 5334B.
GATE TIME ......................................................................................................... 1 Second
Obsewe: The HP5334B front panel displays 10.000000 0 MHz -+ 0.2 Hz and both Channel A and B trigger
lights are flashing.
3.
Rotate Channel A trigger level control.
Observe: There is no effect on the Counter's operation.
4. Set AUTO TRIG to OFF. Rotate Channel A trigger level control.
Obsewe: Extreme clockwise and counterclockwise control settings will stop the gating and update of the
Counter. Trigger light stops flashing.
5. Set AUTO TRIG to ON. Connect the rear panel TIME BASE oscillator signal to Input B. Set FUNCTION
to FREQ B.
Obsewe: The HP5334B front panel displays 10.000 000 0 MHz + 0.2 Hz and Channel A and B trigger
lights are flashing.
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- Service Manual
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6.
Rotate ChannelB trigger level control.
Observe: There is no effect on the Counter's operation.
7. Set AUTO TRIG to OFF. Rotate Channel B trigger level control.
Observe: Extreme clockwise and counterclockwisecontrol settingswill stop the gating and update of the
Counter. Trigger light stops flashing.
Test Record: Mark Pass or Fail on the Operational Verification Test Record Card, line 7.
What Checked: Controllines and DAC circuitry.
For Failures: Refer to Section VIII of this manual. The test involves all of the functional blocks: the Input
Amplifier,DAC, Measurement,Executive, Front Panel, and Time BaseIPower Supplyblocks.
4-23. CHANNEL C (Option 030)
This operationalcheck is for HP5334B7scontaining Option 030.
Description: The ChannelC option is checked by simply measuring a frequency within its range of 90 MHz to
1300
MHz.
Equipment: A signal source capable of outputtingsome frequencyfrom 90 MHz to 1300 MHz.
Procedure:
1. Set the signal source as follows:
Frequency
............................................................................................................... 90 to 1300 MHz
Amplitude
.............................................................................................................. 300 mV rms ( + 2.5 dBm)
2.
Set the HP 5334B as follows:
Reinitialize the 5334B.
........................................................................................................... FUNCTION FREQ C
3. Connect the signal source to the HP 5334B Input C.
4. Adjust the Channel C Sensitivitycontrol as needed to cause the Counter to gate and display a stable reading.
Observe: The HP5334B front panel displays the generated frequency.
Test Record: Mark Pass or Fail on the Operational Verification Test Record Card, line 11.
What Checked: Basic operation of the Channel C option.
For Failures: Refer to Section VIII of this manual. The Channel C, Measurement,Executive, and Front Panel
blocks are involved here.
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