HP 5004A Service manual

CERTIFICATION
Hewlett - Packard Company certifies that this instrument met its published specifications
at the time of shipment from the factory. Hewlett
- Packard Company 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 AND ASSISTANCE
This Hewlett - Packard product is warranted against defects in materials and workmanship
for a period of one year from the date of shipment. Hewlett
- Packard will, at its option,
repair or replace products which prove to be defective during the warranty period pro
-
vided they are returned to Hewlett - Packard, and provided the preventive maintenance
procedures in this manual are followed. Repairs necessitated by misuse of the product
are not covered by this warranty. NO OTHER WARRANTIES ARE EXPRESSED OR
IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HEWLETT-
PACKARD IS NOT LIABLE FOR CONSEQUENTIAL DAMAGES.
Service contracts or 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 this manual.

OPERATING AND SERVICE MANUAL
5004A
SIGNATURE ANALYZER
SERIAL NUMBERS
This manual applies directly to instruments with serial
numbers prefixed
1704.
Copyright HEWLETT - PACKARDCOMPANY 1977
5301STEVENS CREEK BLVD., SANTA CLARA, CALIF. 95050
MANUAL PART NO. 05004-90001
MicrofichePart No. 05004-90002
Printed: MAR 1977

Model 5004A
Table of Contents
TABLE OF CONTENTS
Section Title Page
I GENERAL INFORMATION ........................................... 1 - 1
1.1
. Introduction .................................................. 1 - 1
. ......................................... 1.3 Safety Considerations 1 - 1
1.6
. Options (Line Voltages) ....................................... 1 - 1
1.8
. Instruments Covered by Manual ............................... 1 - 1
1.13
. Specifications ................................................. 1 - 1
1.15
. Description of 5004A Signature Analyzer ........................ 1 - 2
1.17
. Signature Analysis ........................................... 1 - 2
1.19
. Accessories Supplied ........................................ 1 - 3
1.21
. Recommended Test Equipment ................................ 1 - 3
INSTALLATION
...................................................... 2 - 1
2.1 . Introduction .................................................. 2-1
2.3 . Initial Inspection .............................................. 2 - 1
2.5
. Preparation for Use ........................................... 2 - 1
2.6
. Power Requirements ........................................ 2 - 1
2.8
. Line Voltage Selection ....................................... 2 - 1
2.10
. Line Voltage Label .......................................... 2 - 1
2.12 . Power Cable ............................................... 2-1
2.14 . Operating Environment ..................................... 2 - 2
2.18
. Storage and Shipment ......................................... 2 - 3
2.19
. Environment ............................................... 2 - 3
2.22
. Packaging .................................................. 2 - 3
OPERATION
........................................................ 3 - 1
3.1
. Introduction .................................................. 3 - 1
3.3
. Panel Features ................................................ 3 - 1
3.5
. SignatureDisplay ............................................. 3 - 1
................... 3.8 . Hexadecimal Number System Symbols (Digits) 3 - 1
............................. 3.10 . Test Terminal Grabber Connectors 3 - 1
3.12
. Operator's Maintenance ....................................... 3 - 5
3.14
. Operator Self-Test of 5004A .................................... 3 - 5
............................ 3.16 . InstrumentsCompatible with 5004A 3 - 7
3.18
. Operating Instructions ........................................ 3 - 7
3.20
. Typical Connections of 5004A to Device Under Test
............. 3 - 8
3.22
. Probe, Pod, and Power Cable Storage .......................... 3 - 9
............. 3.24 . Troubleshooting with the 5004A Signature Analyzer 3 - 9
IV PERFORMANCETESTS ............................................... 4 - 1
4
- 1 . Introduction .................................................. 4 - 1
4
- 3 . Test EquipmentRequired ...................................... 4 - 1
4
- 4 . Logic Level Performance Test .................................. 4 - 1
4
- 6 . Positive Pulse Performance Test ................................ 4 - 2
4
- 8 . Negative Pulse Performance Test ............................... 4 - 3
....................... 4 - 10 . Data Probe Setup Time PerformanceTest 4 - 3
........................ 4 - 12 . Data Probe Hold Time PerformanceTest 4 - 5
4
- 14 . Test Record .................................................. 4 - 5
ADJUSTMENTS
...................................................... 5 - 1
5.1
. Introduction .................................................. 5 - 1
........... 5.3 . Data Probe Threshold Voltage Check and Adjustments 5 - 1
5.5
. Power Transformer Primary Line Voltage Change Procedure ...... 5 - 1
iii

Section Title Page
VI REPLACEABLE PARTS ................................................ 6 - 1
6.1
. Introduction ................................................. 6 - 1
6.4
. Ordering Information ........................................ 6 - 3
6.6
. HP Part Number Organization ................................ 6 - 3
6.8
. Component Parts and Materials ............................. 6 - 3
6.11
. General Usage Parts ........................................ 6 - 4
6.13
. Specific Instrument Parts ................................... 6 - 4
6.15
. Mechanical Parts ........................................... 6 - 4
VII MANUAL CHANGES ................................................. 7 - 1
7.1
.
l ntroduction ................................................. 7 - 1
Vl l l SERVICE ............................................................ 8 - 1
8.1
. Introduction ................................................. 8 - 1
8.3
. Safety Considerations ........................................ 8 - 1
8.9
. Recommended Test Equipment ............................... 8 - 1
8.11
. Logic Symbols ............................................... 8 - 2
8.13
. Logic Concepts ............................................ 8 - 2
8.15
. Negation .................................................. 8 - 2
8.17
. Logic Implementation and Polarity Indication ................ 8 - 3
8.26
. Other Symbols ............................................ 8 - 5
8.28
. Dependency Notation " C " " G " " V " "F" ..................... 8 - 6
8.30
. Control Blocks .............................................. 8 - 7
Complex Logic Devices
..................................... 8 - 8
Troubleshooting (Failure Analysis)
............................. 8 - 9
Troubleshooting Flowchart
................................. 8 - 9
Major Test Point Signatues
.................................. 8 - 9
Troubleshooting Signatures with SELF
- TEST and NORMAL/
SERVICE Switches
......................................... 8 - 9
Disassembly and Reassembly Procedures
...................... 8 - 14
Data Probe Disassembly and Reassembly
.................... 8 - 15
Gating Signals Pod Disassembly and Reassembly
............. 8 - 15
Block Diagram Description
.................................. 8 - 16
Clock. Start. and Stop Signal Paths
......................... 8 - 16
ScanAest Oscillator (InternalClock) ........................ 8 - 16
Self
- Test ................................................. 8 - 16
Display Scan and Comparator Strobe
....................... 8 - 18
Service (Troubleshooting)Mode
........................... 8 - 18
Power Supply
............................................. 8 - 18
Circuit Theory (Principlesof Operation)
...................... 8 - 18
Purpose of 5004A
........................................ 8 - 18
Schematic Diagram
....................................... 8 - 18
Gating Signals Pod
........................................ 8 - 18
Edge Selection
............................................ 8 - 18
ECL
- to - TTL Level Converters .............................. 8 - 19
Gate Control
........................................ 8 - 19
State Diagram
............................................ 8 - 19
Data Signal Flow
.......................................... 8 - 19
Pseudo
- Random Word Generator (Data
Signal Path Continued)
................................. 8 - 20
Display Control (DataSignal Path Continued)
............... 8 - 21
SignatureComparator (UNSTABLE Signature Lamp)
.......... 8 - 21
ScanAest Oscillator ....................................... 8 - 21
Display Scan
.............................................. 8 - 21
NORMAL/SERVICE Test Switch ............................ 8 - 21
Input Signal Timing
......................................... 8 - 21

Model 5004A
List of Tables
List of Figures
LlST OFTABLES
Table
Figure
Title Page
Specifications ....................................................... 1 - 2
Recommended Test Equipment
....................................... 1 - 3
Test Equipment Required
............................................ 4 - 1
Performance Test Record
........................................... 4 - 5a
ReplaceableParts
.................................................... 6 - 5
Manufacturers Code List
............................................. 6 - 9
Troubleshooting SignaturesMajor Test Points
......................... 8 - 11
SELF-TEST and NORMAL/SERVICE Signatures
......................... 8 - 13
LlST OFFIGURES
Title Page
Model 5004A Signature Analyzer ...................................... 1 - 0
Power CableHP Part Numbers Versus Mains Plugs Available
............ 2 - 2
Front Panel. Probe. and Pod Features
................................. 3 - 2
................................................... Operator Self - Test 3 - 4
Operating
l nstructions ............................................... 3 - 6
Typical Connections of 5004A to Device Under Test
.................... 3 - 8
Probe. Pod. and Power Cable Storage
................................. 3-9
Logic Level Performance Test Setup ................................... 4 - 2
Positive Pulse Performance Test Setup
................................. 4 - 2
NegativePulse Performance Test Setup
................................ 4 - 3
Data Probe Vcc-Vref Graph
......................................... 5 - 2
......................................
Fuse and Line Voltage Selection 5
- 3
Mechanical Parts
................................................... 6 - 10
Troubleshooting Flowchart
.......................................... 8 - 11
.......................................... Heat Sink Screws Locations 8 - 14
5004A Circuit Block Diagram ........................................ 8 - 17
Gate Control State Diagram
......................................... 8 - 20
Input Signals Timing
................................................ 8 - 21
Schematic Diagram Notes
........................................... 8 - 22
Probeand Pod (A3 and A4) Component Locations
.................... 8 - 24
Display Board and Main Board (Al)Component Location
.............. 8 - 25
SchematicDiagram
................................................. 8 - 27

Model 5004A
Safety Considerations
SAFETY CONSIDERATIONS
GENERAL
This is a Safety Class I instrument. This instrument has been designed and tested according to
IEC Publication
348, " Safety Requirements for Electronic Measuring Apparatus. "
OPERATION
BEFORE APPLYING POWER verify that the power transformer primary is matched to the
available line voltage and the correct fuse
is installed (see Section 11). Make sure that only
fuseswiththerequired ratedcurrentandofthe specifiedtype(normalblow, timedelay, etc.)are
used for replacement. The use of repaired fuses and the short-circuiting of fuseholders must
be avoided.
SERVICE
Although this instrument has been designed inaccordancewith international safety standards,
this manual contains information, cautions, and warnings which must be followed to ensure
safe operation and to retain the instrument in safe condition. Service and adjustmentsshould
be performed only by qualified service personnel.
Any adjustment, maintenance, and repair of the opened instrument under voltage should be
avoidedas muchas possibleand, when inevitable, shouldbecarriedoutonly by askilledperson
who
is aware of the hazard involved.
Capacitors inside the instrument may still be charged even if the instrument has been discon
-
nected from its source of supply.
Whenever it
is likely that the protection has been impaired, the instrument must be made in-
operative and be secured against any unintended operation.

Model 5004A
Safety Considerations
WARNING
IF THlS INSTRUMENT IS TO BE ENERGIZED VIA AN AUTOTRANS -
FORMER (FOR VOLTAGE REDUCTION) MAKE SURE THE COMMON
TERMINAL IS CONNECTED TO THE EARTHED POLE OF THE POWER
SOURCE.
WARNING
BEFORE SWITCHING ON THE INSTRUMENT, THE PROTECTIVE EARTH
TERMINALS OF 'THE INSTRUMENT MUST BE CONNECTED TO THE
PROTECTIVE CONDUCTOR OF THE (MAINS) POWER CORD. THE
MAINS PLUC SHALL ONLY BE INSERTED
IN A SOCKET OUTLET PRO -
VIDED WlTH A PROTECTIVE EARTH CONTACT. THE PROTECTIVE
ACTION MUST NOT BE NEGATED BY THE USE OF AN EXTENSION
CORD (POWER CABLE) WITHOUT A PROTECTIVE CONDUCTOR
(GROUNDINC).
WARNING
THE SERVICE INFORMATION FOUND IN THlS MANUAL IS OFTEN
USED WlTH POWER SLIPPI-IED AND PROTECTIVE COVERS REMOVED
FROM THE INSTRUMENT. ENERGY AVAILABLE AT MANY POINTS
MAY, IF CONTACTED, RESULT INPERSONAL INJURY.
CAUTION
BEFORE SWITCHING ON THlS INSTRUMENT:
1. MAKE SURE THE INSTRUMENT IS SET TO THE VOLTAGE OF
THE POWER SOURCE.
2. ENSURE THAT ALL DEVICES CONNECTED TO THlS INSTRU -
MENTARECONNECTEDTOTHEPROTECTIVE(EARTH) GROUND.
3.
ENSURE THAT THE LINE POWER (MAINS) PLUC IS CONNEC -
TED TOA THREE - CONDUCTOR LINEPOWER OUTLET THATHAS
A PROTECTIVE (EARTH) GROUND. (GROUNDINC ONE CON
-
DUCTOROFA TWO - CONDUCTOROUTLETISNOTSUFFICIENT.)
4.
MAKE SURE THAT ONLY FUSES WlTH THE REQUIRED RATED
CURRENT AND OF THE SPECIFIED TYPE (NORMAL BLOW,
TIME DELAY, ETC.) ARE USED FOR REPLACEMENT. THE USE
OF REPAIRED FUSES AND THE SHORT
- CIRCUITING OF FUSE
HOLDERS MUST BE AVOIDED.
vii

Model 5004A
~eneralInformation
SECTION I
GENERAL INFORMATION
I
1 - 2. This operating and service manual contains information needed to operate, test, and
service the Hewlett
- PackardModel 5004A Signature Analyzer. Figure 1-1 shows the 5004A.
TC 1-3. SAFETY CONSIDERATIONS
1 - 4. The 5004A Signature Analyzer is a Safety Class I instrument. This instrument has been
designed according to international safety standards.
1
- 5. This operating and service manual contains information, cautions, and warnings which
mustbefollowedbytheuser toensuresafeoperationandkeeptheinstrumentinsafe condition.
1-6. OPTIONS (LINE VOLTAGES)
1 - 7. Options for the 5004A are the four possibleline voltagesettings for the instrument. (Any
5004A may be set for any of the four line voltages, but the cabinet must beopened to change
the line voltage setting.) The four optionnumbers are the same as the corresponding linevolt
-
ages: 100, 120, 220, and 240, (e.g., Option 120 is for 120 Volt line supply). The procedure to
.. .
chan
g
e the line voltage setting iigiven inSection V.
1 - 8. INSTRUMENTS COVERED BY MANUAL
1 - 9. Attached to the instrument is a serial number plate. The serial number is in the form:
I
0000A00000. It is in two parts; the first four digits and the letter are the serial prefix and the
last five digits are the suffix. Theprefix
is the same for all identical instruments; itchanges only
when a change
is made to the instrument. The suffix however, is assigned sequentially and is
different for each instrument. The contents of this manual apply to instrumentswith the serial
number prefix(es)listed under SERIAL NUMBERS on the title page.
1
- 10. An instrument manufacturedafter the printing of this manual may have aserial number
prefix that
is not listed on the titlepage. This unlisted serial number prefix indicates the instru -
ment is different from those described in this manual. The manual for this newer instrument
is accompanied by a yellow Manual Changes supplement. This supplement contains " change
information
" that explains how to adapt the manual to the newer instrument.
1-11. Inadditiontochangeinformation, thesupplementmay containinformationforcorrecting
errors inthe manual. To keep this manual as current andaccurateas possible, Hewlett
- Packard
recommendsthat you periodically request the latest ManualChanges supplement. The supple
-
ment for this manual is identified with the manual print date and part number, both of which
appear on the manual title page. Complimentary copies of the supplement are available from
Hewlett
- Packard.
1
- 12. For information concerning a serial number prefix that is not listed onthe titlepage or
in theManual Changes supplement, contact your nearest Hewlett
- Packard office.
1 - 13. SPECIFICATIONS
1 - 14. Overall specifications for the 5004A are given in Table 7-1.

Model 5004A
General Information
Table 7-7. Specifications
DISPLAY:
Signature:
Four - digit hexadecimal. Characters 0,1,2,3,4,5,6,7,8,9,A,C,F,H,P,U.
GATE, UNSTABLE SIGNATURE indicators: Panel Lights. Stretching: 100 millisconds.
Probe - tip indicator: Light indicates high, low, bad - level, and pulsing states.
Minimumpulsewidth: 10nanoseconds. Stretching:50milliseconds.
PROBABILITY OF CLASSIFYING CORRECT DATA STREAM AS CORRECT: 100%.
PROBABILITY OF CLASSIFYING FAULTY DATA STREAM AS FAULTY: 99.998%.
MINIMUM GATE LENGTH: One clock cycle.
MINIMUM TIMING BETWEEN GATES (from last STOP to next START): One clock cycle.
DATA PROBE:
lnput Impedance:
50 Kn to1.4 Volt, nominal. Shunted by 7 pF, nominal.
Threshold: Logic one: 2.0 Volt +.2 -.3. Logic zero: .8 Volt, +.3 -.2.
Setup Time: 15 nanoseconds, with .2 volt over - drive. (Data required to be valid at least
15 nanosecondsbefore selected clock edge.)
HoldTime: 0nanoseconds.(Datarequired tobehelduntiloccurrenceofselectedclockedge.)
GATING INPUT LINES:
START, STOP, CLOCK inputs:
lnputImpedance: 50 Kfl to1.4 volt, nominal. Shunted by
7 pF, nominal. Threshold: 1.4 volt k.6
(.l volt hysteresis, typical).
START, STOP inputs:
Setup Time:
25 nanoseconds. (START, STOP to be valid at least 25 nanoseconds before
selected clock edge.)
HoldTime: Zeronanoseconds(START, STOP tobehelduntiloccurrenceof selectedclock edge).
CLOCK INPUT:
Maximumclock frequency: 10 MHz.
MinimumClock Time in High or Low State: 50 nanoseconds.
VOLTAGE OVERLOAD PROTECTION: All inputs +I50 volts continuous.
k 250 volts intermittent.
250 volts ac for 1 minute.
OPERATING ENVIRONMENT:
Temperature:
0-55OC.
Relative Humidity: 95% at 40°C.
Altitude: 4,600M.
POWER REQUIREMENTS:
Option 100:
l00V ac line, +5%, -lo%, 48-440 Hz
Option 120: 120V ac line, +5%, -lo%, 48-440 Hz
Option 220: 220V ac line, +5%, -lo%, 48 - 66 Hz
Option 240: 240V ac line, +5%, -lo%, 48 - 66 Hz
I
WEIGHT: Net: 2.5 kg, 5.5 lbs. Shipping: 7.7 kg, 17 lbs.
DIMENSIONS:
90 mm high x 215 mm wide x 300 mm deep (3l/, in. x 5l/, in. x 12 in.)
Dimensions excludetilt bale, probes, and pouch.
1 - 15. DESCRIPTION OF 5004A SIGNATURE ANALYZER
1 - 16. The HP Model 5004A Signature Analyzer is a test instrument for troubleshooting com -
plex electronic logic circuits. It uses the signature analysis technique of troubleshooting.
1 - 17. Signature Analysis
1 - 18. Signature analysis is a method of troubleshooting complex electronic logic circuits to
the individual component level. To use signature analysis with the 5004A, the unit to be tested
must have certain characteristics included with the original design. Typically a logic product

Model 5004A
General 1 nformation
intended for signatureanalysis troubleshooting will have aprogrammed controller andastored
short test program that can exercise most of the unit. Usually the test program
is started by a
" self - test " mode of the instrument. With the test program running, the 5004A (connected to
the unit being tested) will display a unique hexadecimal signature for each signature analysis
test point in the unit being tested. The 5004A requires four signals from the unit being tested:
Clock, Start, Data, and Stop. The CLOCK signal synchronizes the two instruments. The exactly
repetitive START and STOP signals define a window during which theDATA signal
is being re-
ceived by the 5004A. After the STOP signal the 5004A displays the unique hexadecimalsigna-
ture of the data received.
1 - 19. ACCESSORIES SUPPI-IED
1 - 20. The accessories supplied with the 5004A are shown inFigure 7-7.
a. Depending on the customer's location, the linepower cable may be suppliedwithone
of four line (mains)connectors. Refer to the
" Power Cable " paragraph in Section II.
b. Five detachable
" grabber " test connectors are supplied with the 5004A. Refer to Sec -
tion Ill for adescription and use.
c.
One ground wire for the data probe is supplied with the 5004A.
1 - 21. RECOMMENDED TEST EQUIPMENT
1 - 22. Table 7-2 lists recommended test equipment to test, maintain, and troubleshoot the
5004A.
Table 7-2. Recommended Test Equipment
INSCRUMENT
Pulse Generator
Pulse Generator
Oscilloscopewith dual
- trace
vertical amp.
Power Supply
Digital Voltmeter
Resistor
Resistor
Capacitor
Capacitor
Logic Probe
Logic Pulser
Logic Current Tracer
CRITICAL SPECS I RECOMMENDED HP MODEL
5 ns-100 ns delay
10
MHz, 5 volts pulse
100 MHz
I
5 volts
10 volts
1000R 5% 1/4W
50R5% 2W
0.1 pF +20% 25V
10
pF +75 - 10% 25V
mL compatibility
n'L compatibility
1 ma-1
A Range

Model 5004A
General Information
intended for signatureanalysis troubleshooting will have aprogrammed controller andastored
short test program that can exercise most of the unit. Usually the test program
is started by a
" self-test " mode of the instrument. With the test program running, the 5004A (connected to
the unit being tested) will display a unique hexadecimal signature for each signature analysis
I
test point in the unit being tested. The 5004A requires four signals from the unit being tested:
Clock, Start, Data, and Stop. The CLOCK signal synchronizes the two instruments. The exactly
I
repetitive START and STOP signals define a window duringwhich theDATA signal is being re-
ceived by the 5004A. After the STOP signal the 5004A displays the unique hexadecimalsigna-
ture of the data received.
1 - 19. ACCESSORIES SUPPLIED
1 - 20. The accessories supplied with the 5004A are shown inFigure 1-1.
a. Depending on the customer's location, the linepower cablemay be supplied withone
of four line (mains)connectors. Refer to the
" Power Cable " paragraph in Section II.
b. Five detachable
" grabber " test connectors are supplied with the 5004A. Refer to Sec -
tion Ill for adescription and use.
c. One ground wire for the data probe
is supplied with the 5004A.
1 - 21. RECOMMENDED TEST EQUIPMENT
1 - 22. Table 1-2 lists recommended test equipment to test, maintain, and troubleshoot the
5004A.
Oscilloscopewith dual - trace
vertical amp.
Table
7-2. Recommended Test Equipment
Power Supply
Digital Voltmeter
Resistor
Resistor
Capacitor
Capacitor
Logic Probe
Logic Pulser
INSTRUMENT
Pulse Generator
Pulse Generator
100
MHz
5 volts
10 volts
l00OR 5% 1/4W
50R5% niy
0.1 pF +20% 25V
10
pF +75 - 10% 25V
ITL compatibility
TrL compatibility
CRITICAL SPECS
5 ns - 100 ns delay
10
MHz, 5 volts pulse
I Logic Current Tracer I 1 ma-1 A Range I 547A I
RECOMMENDEDHPMODEL
8007B
8013B

Model 5004A
l nstallation
SECTION II
INSTALLATION
2-1. INTRODUCTION
2 - 2. This section provides information for inspection, installation, and prepration for use of
the 5004A Signature Analyzer.
2-3. INITIALINSPECTION
2 - 4. Inspect the shipping container for damage. If the shipping container or cushioning
material
is damaged, it should be kept until the contents of the shipment have been checked
for completeness and the instrument has been checked mechanically and electrically. The
contents of the shipment should be as shown inFigure
7-7; procedures for checking electrical
performance are given in Section IV. If the contents are incomplete, if there
is mechanical
damageor defect, or if the 5004A doesnotpass theperformancetests, notify thenearestHewlett-
Packard office. If the shipping container is damaged, or the cushioning material shows signs
of stress, notify the carrier as well as the Hewlett
- Packardoffice. Keep the shipping materials
for carrier's inspection. TheHP office will arrange for repair or replacement at HP optionwith
-
out waiting for claim settlement.
2 - 5. PREPARATION FOR USE
2
- 6. Power Requirements
2 - 7. The 5004A requires a power source as shown inSection I, Specifications.
2 - 8. Line Voltage Selection
2 - 9. Changingthe 5004A power sourcevoltagesetting requiresthe5004A cabinettobeopened.
Instructions for changing the line voltage setting are given inSection V.
2 - 10. Line Voltage Label
2 - 11. The original linevoltage setting for each 5004A as manufactured is printed on alabel on
the back panel of each 5004A. Check this label and compare the voltage (100,120,220, or 240)
with your local line voltage supply. If you do not have the correct linevoltagefor your 5004A,
notify aqualified technician and refer toSection V of this manual.
2 - 12. Power Cable
2 - 13. The 5004A is shipped withathree - wire power cable. When the cable is connected toan
appropriate ac power source, this cable grounds internal
" grounds " in the 5004A and the two
exposed screws on the rear panel heat sink. The type of power cable plug shipped with each
instrument depends on the country of destination. Refer to Figure 2-7 for the part numbers
of the power cable and plug configurations available.

Model 5004A
Installation
L
8120 - 1351 8120-1368 8120-1669
POWER - INPUT
Q@5E
BEFORE SWITCHING ON THlS INSTRUMENT, THE PROTECTIVE
EARTH TERMINALS OF THlS INSTRUMENT MUST BE CONNEmD
TO'CHE PROTECTIVECONDUCTOROFTHE(MAINS)POWERCORD.
THE MAINS PLUG SHALL ONLY BE INSERTED
IN A SOCKET OUT -
LET 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).
6120-1346 8120-06198 8120 - 2104
2 - 14. Operating Environment
?
I
I
2 - 15. TEMPERATURE. The 5004A may be operatedin temperatures fromO
°
C to +55OC.
Figure 2-1. Power Cable HP Part Numbers Versus Mains Plugs Available
2 - 16. HUMIDITY. The 5004A may be operated in environments with humidity up to 95%.
However, it should be protectedfrom temperature extremes whichcausecondensationin the
instrument.
2
- 17. ALTITUDE. The 5004A may be operated at altitudes up to 4,600 metres.

Model 5004A
l nstallation
2 - 18. STORAGE AND SHIPMENT
2
- 19. Environment
2-20. The instrument may be stored or shipped in environments within the following limits:
Temperature
....................... -40°C to +75OC
Humidity ............................... Up to 95%
............ Altitude 4,600 meters (15,000 feet)
2
- 21. The instrument should also be protected from temperature extremeswhich cause con-
densation within the instrument.
2 - 22. Packaging
2 - 23. ORIGINAL PACKAGING. Containers and materials identical to those used in factory
packaging are available through Hewlett
- Packard offices. If the instrument is being returned
to Hewlett
- Packard for servicing, attach a tag indicating the type of service required, return
address, model number, and full serial number. Also, mark the container FRAGILE to ensure
careful handling. In any correspondence, refer to the instrument by model number and full
serial number.
2
- 24. OTHER PACKAGING. The following general instructions should be used for repacking
with commercially available materials:
a. Wrap instrument in heavy paper or plastic. (If shipping to Hewlett
- Packard office or
service center, attach tag indicating type of service required, return address, model
number, and full serial number.)
b. Use strong shipping container. A double
- wall carton made of 350-poundtest material
is adequate.
c. Use a layer of shock
- absorbing material 70 to 100 mm (3 - to 4-inch) thick around all
sides of the instrument toprovide firm cushioning and prevent movement inside con
-
tainer. Protect control panel with cardboard.
d. Seal shipping container securely.
e. Mark shipping container FRAGILE to ensure careful handling.
f. Inany correspondence, refer to instrument by model number and full serial number.

Model 5004A
Operation
SECTION Ill
OPERATION
3-1. INTRODUCTION
3 - 2. This section explains the functions of the operatingcontrols, indicators, probe, and test
connectors of the 5004A Signature Analyzer. An operator's self - test is given, and the normal
operatingmodes are described.
3-3. PANEL FEATURES
3 - 4. Front panel features of the Signature Analyzer are described in Figure 3
- 7. This figure
contains
a detailed descriptionof the controls, connectors, and indicators.
3-5. SIGNATURE DISPLAY
3 - 6. the 5004A Signature Analyzer presents digital signatures with a four-character,(symbol)
display on its front panel. Each character, which can be any oneof 16 symbols, is shown on a 7-
segment light-emitting-diodedisplay 10 by 7millimetres.The 16 possible characters are:
1- I I - 1 1 I I- I, -1 1-1 I1 1-1 13 I- I- -1 11 - 11 I
-1 -1 Ill 111 -11-11 11, I
11 I I- - -1 1- 1-1
3 - 7. The characterspresented on the display are ahexadecimal number which is theresidue
of
a count in the 5004A after a START and a STOP signal have been received with some data
bits in between.
NOTE
Nosignature appearingonthe 5004A display has any particularsignif -
icance beyond being a correct (expected)signature or an incorrect
signature. Thenumber
is, however, acountresidueinthe 5004A con -
verted to and displayed in hexadecimal.
3-8. HEXADECIMAL NUMBER SYSTEM SYMBOLS (DIGITS)
3 - 9. The four - digit front panel display presents numbers in a special set of hexadecimal
symbols (seeprecedingparagraph). Note that the final six symbols are not the commonhexa -
decimal symbols ABCDEF because the seven - segment display of the 5004A can not show aB
or D that would be different from an
8 or 0 respectively (andseveral other symbols could be
ambiguous).
3 - 10. TEST TERMINAL GRABBER CONNECTORS
3 - 11. Five test
- terminal grabber - connectors are supplied with the 5004A. 'The grabbers are
push
- onpull - off connectors. A grabber can beused on the end of theactive test pod test leads
tomakereliableelectricalconnectionsfrom the5004A totheinstrumentbeingtested. Figure3-7
shows grabbers connected to the pod test leads. Figure 3 - 4 shows grabbers connected to a
devicebeingtested. theremoveableground(common)testleadfortheprobealsohas agrabber.

Model 5004A
Operation
FRONT PANEL FEATURES
0 FOUR - DIGIT DISPLAY: Shows the unique signaure stimulatedby the input signals.
@ GATE Lamp: Regular blinking of GATE lamp indicates proper START/STOP gating
signals.
@ UNSTABLE SIGNATURE Lamp: Intermittent or occasional blinking of this lamp indi -
cates adifference between successive signatures inputted to the 5004A.
0 PROBE TEST Connector: Test point for 5004A data probe in SELF - TEST mode.
@ DATA PROBE: Point of entry for data from unit being tested by 5004A. Lamp near probe
tip indicates logic level at tip: OnBright
= High, OnDim = Bad - level, Off = Low, 10 ns
or greater pulses are stretched to 100ms. Note side ground connector for fast circuitsand
RESET switch.
START Test Point: Test point for the START test connector on the activepod in the
SELF -
TEST mode.
0 STOP Test Point: Test point for the STOP test connector on the active pod in the SELF -
TEST mode.
@ CLOCK Test Point: Test point for theCLOCK test connector ontheactivepod inthe SELF -
TEST mode.
0 Active Test Pod: Four test inputs START, STOP, CLOCK, and a common GND (ground)
are extended with this active pod for fast rise time signals and low circuit loading.
@ START Test Lead: Point of entry for START signal from the unit being testedby the 5WA.
@ STOP Test Lead: Point of entry for STOP signal from the unit being tested by the 5WA.
@ CLOCKTestLead: Pointof entryforCLOCK signalfromtheunitbeingtestedbythe5004A.
@ GND Test Lead: Common (ground) test lead for connection to unit being tested by the
5004A.
SWITCH NOTE
The following six switches
0, , @, a, @, and@are all pushed oncetolock in - on
and push again to release out
- of switches.
0 SELF - TEST Switch: When pushed and locked in. this test puts the 5004A in the SELF -
TEST mode. (SeeSWITCH NOTE above.)
@ HOLD SignatureSwitch: When pushed and locked in, thisswitch will hold asingle, one -
time signature for comparison or recording. (SeeSWITCH NOTE above.)
@ @ @CLOCK, STOP, andSTART Switches: These three switches are set to select either
the positive
- going (I= f) (indicates switch position) transition or the negative - going
(, 21) (indicatesswitch position) transition of the respective signals as the active con -
trol for that signal. The CLOCK, STOP, and START switches are respectively the active
control switches for theCLOCK, STOP, andSTART test inputs onthe activepod. (See the
SWITCH NOTE.)
-I
@ LINE OFF ON Switch: (Indicates switch position.) This switch controls application of
mainslinepower tothe 5004A. Linepower
is appliedwhen theswitch is pushedandlocked
in. Line power
is disconnectedwhen the switch is out. (See SWITCH NOTE.)
@ Handle - Stand: The combination handle and stand can be rotated by pulling gently at the
sidepivotpointsbothsides simultaneouslyand turning thehandletothedesiredposition.
Figure
3-1. Front Panel, Probe, andPodFeatures (Continued)