Hewlett Packard 3476B digital multimeter Operating and Service Manual

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OPERATING
AND
SERVICE
MANUAL
DIGITAL
MULTIMETER
34768
Flio-
HEWLETT
~~ PACKARD
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FlinHEWLETT
~~ PACKARD
OPERATING AND SERVICE MANUAL
MODEL
DIGITAL
For
Instrument Serial
34768
MULTIMETER
Numbers I652A07250 and Greater
Any changes made in instruments manufactured after this printing will be found in a "Manual Changes" supplement supplied
with this manual. Be sure to examine this supplement, if one
exists for this manual, for any changes which apply to your
instrument and record these changes in the manual.
WARNING
I
To help minimize the possibility of electrical fire or shock
hazards, do not expose this instrument to rain or excess
moisture.
Manual Part No. 03476-90006
Microfiche Part No. 03476-90056
©Copyright Hewlett-Packard Company 1976
P.O. Box 301, Loveland, Colorado 80537 U.S.A.
Printed: November 1977
FliOW
HEWLETT
r------------~~PACKARD
CERTIFICATION.
Hewlett-Packard Company certifies that this product met its published specifications at the time ofshipment 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 [,except that in the case of certain components listed in Section I of this manual, the warranty
shall be for the specified period) . 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.
Hewlett-Packard 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. Hewlett-Packard 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 of the environmental
specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HEWLETT-PACKARD 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. HEWLETTPACKARD 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 this manual.
10/1/79
Model 3476B
Table of Contents
TABLE OF CONTENTS
Section
Page
I.
GENERAL INFORMATION
1-1
1-1. Introduction
1-1
1-3. Description . . . . . . . . . . . . . . . . . . . . . 1-1
1-5. Specifications................... 1-1
1-7. Instrument and Manual
Identification
1-3/14
1-9. Options
1-3/1-4
1-12. Accessories
1-3/1-4
1-14. Safety Considerations
1-3/14
Section
I!.
INSTALLATION
_
2-1. Introduction
2-3. Initial Inspection
2-5. Power Requirements
2-7. Environmental Requirements
2-9. Repackaging for Shipment
2-13. Power Cords and Receptacles
Page
2-1/2-2
2-1/2-2
2-1/2-2
2-1/2-2
2-1/2-2
2-1/2-2
2-1/2-2
Section
Page
lII. OPERATING INSTRUCTIONS
_
3-1
3-1. Introduction
3-1
3-3. Turn-On
3-1
3-5. Operation
3-1
3-6.
Overload/Overrange Indication
3-1
3-8.
Auto/Hold Switch
_
_ 3-1
3-11. AC Voltage Measurements
3-1
3-14. DC Voltage Measurements
_ .. 3-2
3-17. AC Current Measurements
3-2
3-20. DC Current Measurements
3-2
3-23. Resistance Measurements
3-2
3-26. Battery Operation
3-3
3-27. Recharging the Battery
3-3
3-29. Operating Time
3-3
3-31. Low Battery Indication
_ .. 3-3
3-33. Input Protection Fuses
3-3
3-35. AC Line and Battery Fuse
Replacement. . . . . . . . . . . . . . . .
3-3
3-37. Semiconductor Junction Measurements.
3-3
Section
IV. THEORY OF OPERATION
4-1. Introduction
4-3.
Simplified Block Diagram
Description (Figure 4-1)
Page
.4-1/4-2
.4-1/4-2
Section
Page
V.
MAINTENANCE
5-1
5-1. Introduction
_
5-1
5-3.
Test EqUipment Required
5,1
5-5. Performance Tests
5-1
5-6.
DC Voltmeter Accuracy Test
5-1
5-8.
DC Ammeter Accuracy Test
5-1
5-10. Ohms Accuracy Test
5-2
5-12. AC Voltage Accuracy Test
5-2
5-14. AC Ammeter Accuracy Test
5-3
5-15. AC Common-Mode Rejection Test
5-3
5-17. DC Common-Mode Rejection Test
5-3
5-19. Adjustment Procedure
_ .. 5-6
5-21. Power Supply Adjustment
5-6
5-22. Substrate Adjustment
5-6
5-23. Input Amplifier Zero Adjustment
5-6
5-25. Integrator Amplifier Zero Adjustment .. 5-6
5-27. + DC Volt Gain Adjustment
_ 5-6
5-28. - DC Volt Gain Adjustment
5-6
5-29. Clock Frequency Adjustment
5-6
5-30. Ohms Adjustment
5-7/5-8
5-3 I. AC Converter Gain and Zero
Adjustment
_
5-7/5-8
5-32. AC High Frequency Adjustment
(.I 1 V range)
5-7/5-8
5-33. Changing the Power
Line Options
5-7/5-8
AC Line and Battery Fuse
Replacement
5-7/5-8
5-36.
Section
Page
V!. REPLACEABLE PARTS. . . . . . . . . . . . . .
6-1
6-1. Introduction
6-1
64. Ordering Information
6-1
6-6. Non-Listed Parts
6-1
6-8. Parts Changes
: . 6- I
6-10. Proprietary Parts
6-1
Section
VII. TROUBLESHOOTING AND CIRCUIT
DIAGRAMS
_
7-1. Introduction
7-3. Preliminary Troubleshooting
7-10. Schematic Diagrams
7-12. Printed Circuit Assembly
Exchange
Printed Circuit Board
Removal
_
Page
7-1
7-1
7-1
7-2
_. 7-2
7-14.
.4-1/4-2
7-2
iii
Table of Contents
Model 3476B
LIST OF TABLES
Table
I-I. Specifications
1-2. General Information
1-3. Options
1-4. Accessories.. _
5-1. Required Test Equipment
5-2. DC Voltmeter Accuracy Test.
5-3. DC Ammeter Accuracy Test
5-4. Ohms Accuracy Test
5-5. AC Voltage Accuracy Test
5-6. AC Ammeter Accuracy Test
6-1. Standard Abbreviations
6-2. Code List of Manufacturers
6-3. Replaceable Parts
_
_
Page
I-I
, 1-2
1-3/1-4
1-3/1-4
5-0
5-1
5-2
5-2
5-3
5-3
6-2
6-2
6-3
LIST OF ILLUSTRATIONS
R~re
2-1.
3- I.
3-2.
3-3.
3-4.
3-5.
3-6.
3-7.
3-8.
3-9.
4-1.
5-1.
5-2.
5-3.
5-4.
5-5.
7-1.
7-2.
iv
Plug Caps
Overload Indica tion
Multimeter Autoranging
AC Voltage Measurement
DC Voltage Measurement
_
AC Current Measurement
DC Current Measurement
Resistance Measurement
_
Low Battery Indication
Location of Controls and Connectors
Simplified Block Diagram
_
DC Ammeter Accuracy Test
Ohms Accuracy Test
AC Ammeter Accuracy Test
Common-Mode Rejection Test
Adjustment Locator.
Multimeter Schematic Diagram
Power Supply
~~
2-1/2-2
3-1
3-1
3-1
3-2
3-2
3-2
3-2
3-3
3-4
.4-1/4-2
5-2
5-2
5-3
5-4
5-9/5-10
7-5/7-6
7-7/7-8
FliOW
HEWLETT
~~ PACKARD
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service, and repair of this
instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture, and intended use of the instrument. Hewlett·Packard Company assumes no
liability for the customer's failure to comply with these requirements. This is a Safety Class 1 instrument.
GROUND THE INSTRUMENT
To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. The instrument is equipped with a three-conductor ac power cable. The power
cable must either be plugged into an approved three-contact electrical outlet or used with a
three-contact to two-contact adapter with the grounding wire (green) firmly connected to an
electrical ground (safety ground) at the power outlet. The power jack and mating plug of the
power cable meet International Electrotechnical Commission (IEC) safety standards.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gases or fumes. Operation of any
electrical instrument in such an environment constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must be made by qualified maintenance personnel. Do not replace components
with power cable connected. Under certain conditions, dangerous voltages may exist even with
the power cable removed. To avoid injuries, always disconnect power and discharge circuits
before touching them.
DO NOT SERVICE OR ADJUST ALONE
Do not attempt internal service or adjustment unless another person, capable of rendering first
aid and resuscitation, is present.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT
Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to a HewlettPackard Sales and Service Office for service and repair to ensure that safety features are maintained.
DANGEROUS PROCEDURE WARNINGS
Warnings, such as the example below, precede potentially dangerous procedures throughout
this manual. Instructions contained in the warnings must be followed.
I WARNING'
Dangerous voltages, capable of causing death, are present in this instrument. Use ex·
treme caution when handling, testing, and adjusting.
A
SAFETY SYMBOLS
General Definitions of Safety Symbols Used On Equipment or In Manuals.
...L
-
&
Instruction manual symbol: the product will be marked with this
symbol wheri it is necessary for the user to refer to the instruction
manual in order to protect against damage to the instrument.
~
OR@
Indicates dangerous voltage (terminals fed from the interior by
voltage exceeding 1000 volts must be so marked).
Protective conductor terminal. For protection against electrical
shock in case of a fault. Used with field wiring terminals to indicate the terminal which must be connected to ground before
operating equipment.
Low-noise or noiseless, clean ground (earth) terminal. Used for a
signal common, as well as providing protection against electrical
shock in case of a fault. A terminal marked with this symbol must
be connected to ground in the manner described in the installation
(operating) manual, and before operating the equipment.
W
m OR.l.
Frame or chassis terminal. A connection to the frame (chassis) of
the equipment which normally includes all exposed metal structures.
Alternating current (power line).
Direct current (power line).
Alternating or direct current (power line).
I
WARNING
I
I
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, condition or the like, which, if not correctly performed or adhered to, could result in injury or death to personnel.
The CAUTION sign denotes a hazard. It calls attention to an
operating procedure, practice, condition 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.
NOTE:
The NOTE sign denotes important information. It calls attention
to procedure, practice, condition or the like, which is essential to
highlight.
Model 3476B
Section I
SECTION I
GENERAL INFORMATION
'-1.
INTRODUCTION.
provided to enable the user to make repeated measurements
without changing ranges. The sample rate is approximately
three readings per second. Throughout the remainder of
this manual, the 3476B Multimeter will be referred to as
Multimeter.
1-6. Specifications for the Multimeter are listed in Table
I-I. These specifica tions are the performance standards o(
limits to which the Multimeter can be tested. Any changes
in these specifica"tions due to manufacturing changes, design
or traceability to the National Bureau of Standards will be
14. The -hp- Model 3476B Multimeter is a 3 digit, five
function, autoranging instrument which measures ac and dc
yoltage, ac and dc current, and ohms. A HOLD function is
'-5.
1-2. This section contains general information concerning
the -hp- Model 3476B Multimeter. Included is an instrument description, specifications, information about instrument and manual identification, option and accessory information, and safety considerations.
'-3. DESCRIPTION.
SPECIFICATIONS.
Table 1-1. Specifications.
DC VOLTMETER
Ranges: ± 0.11 V, 1.1 V, 11 V, 110 V, 1100 V (1000 V Maximum Inputl
Accuracy (20°C to 30°C):
Ranges
0.11 V
1.1 V, 11 V
110 V, 1100 V
Accuracy
(l·Year Calibration Cycle)
Accuracy
(gO·Day Calibration Cycle)
± (0.3% of reading + .2% of range)
± (0.3% of reading + 0.1 % of range)
± (0.4% of reading + 0.1% of range)
± (0.5% of reading + 0.2% of rangel
± (0.5% of reading + 0.1 % of range)
± (0.6% of reading + 0.1% of range)
Common Mode Rejection: > 100 dB at 50 Hz, 60 Hz (1 kfl unbalanced)
Input Resistance: 10 Mfl ± 5%
I nput Protection: < 1000 V (Continuous)
Temperature Coefficient: ± (0.05% of reading + 0.02% of range)/oC
AC VOLTMETER
Ranges: 0.11 V rms, 1.1 V rms, 11 V rms, 110 V rms, 1100 V rms (707 V rms Maximum)
Accuracy (20°C to 30°C):
Accuracy
(gO·Day Calibration Cyclel
± (5% of reading
± (2% of reading
0.11 V rms
± (3% of reading
+ 0.6% of range)
± (1.5% of reading
+ 0.4% of range)
1.1 V rms to 1100 V rms
45 Hz to 2 kHz
Ranges*
2 kHz to 5 kHz
+ 0.6% of range)
5 kHz to 10 kHz
+ 0.6% of range)
± (8% of reading
+ 1.0% of range)
± (18% of reading
+ 1.0% of range)
Accuracy
(l·Year Calibration Cycle)
45 Hz to 2 kHz
1.1 V rms to 1100 V rms
0.11 V rms
± (1.7% of reading
± (8.2% of reading
+ 1.1 % of range)
± (3.2% of reading
5 kHz to 10 kHz
2 kHz to 5 kHz
± (5.2% of reading
± (2.2% of reading
+ 0.7% of range)
+ 0.5% of range)
+ 0.7% of range)
+ 0.7% of range)
± (18.2% of reading
+ 1.1 % of range)
*Ranges usable from 0.03 to full scale.
Common Mode Reiection: (1 kfl balanced) > 80 dB at 50 Hz and 60 Hz
Input Resistance: 10 Mfl ± 5%
Input Capacitance: < 30 pF
I nput Protection: < 707 rms continuous
Temperature Coefficient: ± (0.05% of reading + 0.05% of range)tC
I-I
Model 347613
Section I
Table 1-1. Specifications (Cont'd).
DC AMMETER
Ranges: ± 0.11 A. 1.1 A (1.1 A maximum input)
Accuracy (20°C to 30°C):
Ranges
±O.llA,l.lA
Accuracy
(90-Day Calibration Cycle)
Accuracy
(l-Year Calibration Cycle)
±(0.8%ofreading
0.2% of range)
± (1.0% of reading
0.2% of range)
Impedance: 1 - 1.5 ohm constant
Protection: 1.5 A fuse to 250 V (> 250 V will damage the instrument)
Temperature Coefficient: ± (0.05% of reading + 0.02% of range)/oC
AC AMMETER
Ranges: 0.11 A rms, 1.1 Arms
Accuracy (20°C to 30°C):
(1.1 rmsmaximum input)
Accuracy
(90-Day Calibration Cycle)
Ranges'
45 Hz to 2 kHz
Accuracy
(1- Year Calibration Cycle)
2 kHz to 5 kHz
45 Hz to 2 kHz
2 kHz to 5 kHz
1.1 Arms
± (2% of reading
+ 0.4% of range)
± 13.5% of reading
+ 0.6% of range)
± (2.2% of reading
+ 0.5% of range)
± 13.7% of reading
+ 0.7% of rangel
0.11 Arms
± (2.5% of reading
+ 0.6% of range)
± (5.5% of reading
+ 0.6% of range)
± (2.7% of reading
+ 0.7% of range)
± (5.7% of reading
+ 0.7% of range)
• Ranges usable from 0.03 to full scale.
Impedance: 1 - 1.5 ohm constant
Protection: 1.5 A fuse to 250 V (> 250 V will damage the instrument)
Temperature Coefficient: ± (0.05 of reading + 0.05% of range)/oC
OHMMETER
Ranges: 1.1 kf!, 11 kf!, 110 kf!, 1100 kf!, 11000 kf!
Accuracy: (20°C to 30°C)
Accuracy
(90-Day Calibration Cycle)
Ranges
Accuracy
(1- Year Calibration Cycle)
110 K, 1100 K
± (0.3% of reading
+ 0.1 % of range)
± (0.5% of reading
+ 0.1% of range)
11000 K,
1.1 K,11 K
± (0.5% of readi ng
+ 0.1% of range
± (0.7% of reading
+ 0.1% 'of range)
Open Circuit Voltage: < 4 V
I nput Voltage Protection: < 30 V rms continuous, no effect;
30 V to 250 V rms requires replacement of input fuse; > 250 V will damage instrument.
Temperature Coefficient: ± 10.05% of reading + 0.02% of range)/oC
Table 1-2, General Information,
Ranging: Automatic or Hold Mode
Sample Rate: approximately 3 samples per second
Operating Environmental conditions:
Temperature range: OOC to 40°C
Humidity: < 95% RH
Power:
AC line, < 6 VA at:
Standard, 104-127V, 54-66 Hz
Option 001, 86-106 V, 54-66 Hz
Option 002, 86-106 V, 48-54 Hz
Option 003, 190-230 V, 48-54 Hz
Option 004, 208-250 V, 48-54 Hz
1-2
8attery Pack: rechargeable Nickel Cadmium
Typical Operating time using fully charged batteries:
8 hours at 25°C
Battery charging time: 14 hours at 25°C with
instrument turned off. Battery charge will
be maintained with instrument on.
Weight: 0.97 kg (2 lb. 2 oz.)
Shipping Weight: 1.79 kg (3Ib. 15 oz.)
Dimensions: 5.84 cm (2.3 in.) high, 16.8 cm
(6.6 in.) wide, 20.6 cm (8.1 in.) deep
Model 3476B
covered by an errata or change sheet. These specifications
supersede any prior published specifications. Supplemental
information in Table 1-2 is provided to describe general
operating characteristics.
1-7. INSTRUMENT AND MANUAL IDENTIFICATION.
1-8. Hewlett-Packard uses a two-section serial number. The
first section (prefix) identifies a series of instruments. The
last section (suffix) identifies a particular instrument within
the series. A letter between the prefix and the suffix identifies the country in which the instrument was manufactured.
The manual is kept up-to-date at all times by means of a
change sheet which is supplied with the manual. If the serial
number of your instrument differs from the one on the title
page of this manual, refer to the change sheet supplied with
the manual. All correspondence with Hewlett-Packard
should include the complete serial number.
Option
Standard
001
002
003
004
910
Section I
Table 1-3. Options.
Description
104·127,54-66 Hz, 6 VA, 60 mA Max.
86·106,54-66 Hz, 6 VA, 70 mA Max.
86-106,48-54 Hz, 6 VA, 70 mA Max.
190-230,48-54 Hz, 6 VA, 30 mA Max.
208-150, 48-54 Hz, 6 V A, 30 mA Max.
Two Operating and Service Manuals
1-12. ACCESSORIES.
1-13. The accessories available for use with the Multimeter
are listed in Table 1-4.
Table 1-4. Accessories.
Accessory Number
1-9. OPTIONS.
1-10. Table 1-3 lists the options available for the Multimeter.
1-11. The instrument contains a label identifying the line
voltage for which the instrument is wired. If the jumper
wires are changed to accomodate a different line voltage,
the label must also be changed to indicate the new configuration.
NOTE
If the instrument is to be operated at a line frequency other than the one indicated on the
label, it will be necessary to perform the Clock
Frequency Adjustment in Section V of this
manual.
Model 11096A
Description
R F Probe, 100 kHz to 500 MHz (down
3 dB at 10kHz and 700 MHz)
1251-4242
Model 11 096A
Adapter
Model 11067A
Model 11 068A
Universal Test Lead Kit
Soft Carryi ng Case
1-14. SAFETY CONSIDERATIONS.
1-15. This Operating and Service Manual contains ca utions
and warnings alerting the user to hazardous operating and
maintenance conditions. To ensure the safety of the operating and maintenance personnel and retain the operating
condition of the instrument, these instructions must be
followed.
1-3/1-4
Model 3476B
Section II
SECTION II
INSTALLATION
2-1. INTRODUCTION.
NOTE
2-2. This section contains information and instructions for
the installation and shipping of the Multimeter. Included
are initial inspection procedures, power and grounding
requirements, environmental information, and instructions
for repackaging the instrument for shipment.
2-3. INITIAL INSPECTION.
2-4. This instrument was carefully inspected both mechanically and electrically before shipment. It should be free of
mars or scratches and in perfect electrical order upon receipt. To confirm this, the instrument should be inspected
for physical damage in transit. Electrical performance
should be tested using the performance tests outlined in
Section V. If there is damage or deficiency, see the warranty inside the front of this manual.
2-5. POWER REOUIREMENTS.
2-6. The Multimeter can be operated from anyone of
the ac power sources listed in Table 1-3. Before connecting
the instrument to ac power, verify that the ac power source
matches the power requirement of the instrument by refering to the power requirement label attached to the instrument. If the instrument is incompatible with the available
power source, refer to Section V for Power Requirement
Modification instructions.
2-7. ENVIRONMENTAL REOUIREMENTS.
2-8. The Multimeter will meet the specifications listed in
Table 1-1 when the operating temperature is within the
range of +20°C to +30°C (+68°F to +86°F). The instrument can be operated where the ambient temperature is
within the range of O°C to 40°C (32°F to 104;OF) and the
relative humidity is less than 95%.
WARNING
I
If the instrument is to be shipped to HewlettPacklJrd for service or repair, attach a tag to the
instrument identifying the owner and indicating
the service or repair to be accomplished.
Include the model number and full serial number of the instrument. In any correspondence,
identify the instrument by model number and
full serial number.
2-11. Place instrument in original container with appropriate packing material and seal well with strong tape or metal
bands. If original container is not available, one can be purchased from your nearest -hp- Sales and Service Office.
2-12. If original container is not to be used, proceed as
follows:
a. Wrap inst~ument in heavy paper or plastic before placing in an inner container.
b. Place packing material around all sides of instrument
and protect panel face with cardboard strips.
c. Place instrument and inner container in a heavy carton or wooden box and seal with strong tape or metal
bands.
2-13. POWER CORDS AND RECEPTACLES.
2-14. Figure 2-1 illustrates the plug cap configurations that
are available to provide ac power to the Multirneter. The
-hp- part number shown directly below each plug cap
drawing is the part number for the power cord set equipped
with the appropriate mating plug for that receptacle. The
appropriate power cord should be prOVided with each
instrument. However, if a different power cord set is required, notify the nearest -hp- Sales and Service Office and
a replacement cord will be provided. The instrument ac
power input receptacle and cord set appliance coupler
meet the safety specifications set by the International
Commission on Rules for the Approval of Electrical Equipment (CEE 22).
To prevent potential electrical or fire hazard,
do not expose equipment to rain or moisture.
2-9. REPACKAGING FOR SHIPMENT.
2-10. The following paragraphs contain a general guide for
repackaging the instrument for shipment. Refer to Paragraph 2-11 if the original container is to be used; 2·12 if it
is not. If you have any questions, contact your nearest -hpSales and Service Office (See Appendix A for office locations).
~
:#~
25V_6A'
8120-1521
STO-B-4195
(:)Q.
""
8120-0698
250V - 6A'
I~~
~
·UL LISTED FOR USE IN THE UNITED STATES OF AMERICA
Figure 2-1. Plug Caps.
2-1/2-2
Model 3476B
Section III
SECTION III
OPERATING INSTRUCTIONS
3-1. INTRODUCTION.
3-2. This section contains instructions for operating the
Multimeter. Measurements of ac and dc voltage, ac and dc
current, and ohms are discussed. A description of the controls and connectors is given in Figure 3-9.
I WARNING
I
1100
110
8-.
I
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i
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Q
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,4 •
.101.•
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II
•
:
0
0
0
To prevent potential electrical or fire hazard,
do not expose the Multimeter or its accessories
to rain or moisture.
.1
C;
-.
ex>
ex>
en
.
ex>
ex>
en
0
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0«
2~
INPUT LEVEL (Vdc)
3476-8-'1581
3-3. TURN-ON.
3-4. Before connecting the Multimeter to ac power, verify
that the ac power source matches the power requirements
of the Multimeter by referring to the power requirement
label located below the ac receptacle. If the instrument is
incompatible with the available power source, refer to Section V of this manual for power requirement modification
instructions. After this verification, connect the proper ac
power to the instrument and press the ON button. The instrument is ready for use.
Figure 3-2. Multimeter Autoranging.
3-10. In the HOLD position (IN) the Multimeter will reo
main in the same range as when the switch was depressed.
3-11. AC Voltage Measurements.
3-5. OPERATION.
To avoid possible damage to the Multimeter
circuitry, the ac input voltage must not exceed
707 Vrms.
3-6. Overload/Overrange Indication.
3-7. Figure 3-1 shows the display indication during an
OverioadjOverrange condition.
3-12. Set the Multimeter front panel controls as follows:
DC/AC (:7: ~)
VOLTS (V)
AUTO HOLD
AMPS (A) AND kn
_
~ (IN)
(IN)
AUTO (OUT)
(OUT)
3-13. Connect test leads from the Multimeter V n (HI)
and COM (LOW) connectors to the voltage under test as
shown in Figure 3-3.
Figure 3-1. Overload Indication.
3-8. Auto/Hold Switch.
~
3-9. In the AUTO position (out), the Multimeter is in the
Autoranging mode. In this mode the Multimeter will uprange if the display reading increases abovel II KJ19~1 and
downrange if the display decreases belowl 11110101. These
numerical autoranging points are irrespective of decimal
placement. The difference between the two autoranging
points is called the autoranging hysteresis. Figure 3-2 shows
the autoranging points for dc voltage measurements from 0
to 1000V dc. Autoranging in other Multimeter functions is
similar.
Vfl
COM
A
,--.lkV-----., ~I.IA______.,
MAX
~~~
0
MA~
500V
FU
~x
E
32""
FUSE
1.5A
3476- 8-4453
AC
SOURCE
rv
Figure 3-3. AC Voltage Measurement.
3-1
Section III
Model 3476B
3-14. DC Voltage Measurements.
To avoid possible damage to the Multimeter
circuitry, the dc input voltage must not exceed
1000 V dc.
3-15. Set the Multimeter front panel controls as follows:
== (OUT)
DC/AC (= ~)
VOLTS (V)
AUTO HOLD
AMP (A) AND kn
(IN)
AUTO (OUT)
(OUT)
Figure 3-5. AC Current Measurement.
3-21. Set the Multimeter front panel controls as follows:
3-16. Connect test leads from the Multimeter V n (HI) and
COM (LOW) connectors to the voltage under test as shown
in Figure 3-4.
~
VO
COM
A
,----: I kV ---., , - I ./ A-----,
MAX,MAX
0
500V
FU
E
32fn-A
~x
FUSE
1.54
~~~
DC/AC(=-=-=~)
AMPS (A)
AUTO HOLD
VOLTS (V) AND kn
(OUT)
(IN)
AUTO (OUT)
(OUT)
,
3·22. Connect test leads from the Multimeter A and COM
to the current under test as shown in Figure 3-6.
3476- 8 -4453
BATTERY
Figure 3-4. DC Voltage Measurement.
3-17. AC Current Measurements.
Figure 3-6. DC Current Measurement.
To avoid possible damage to the Multimeter, do
not allow the voltage across the Amps to COM
input terminals to exceed 250 V at any time.
3-18. Set the Multimeter front panel controls as follows:
DC/AC (= ~)
AMPS (A)
AUTO HOLD
VOLTS (V) AND kn
~
(IN)
(IN)
AUTO (OUT)
(OUT)
3-19. Connect test leads from the Multimeter A and COM
connectors to the current under test as shown in Figure 3-5.
3-20. DC Current Measurements.
3-23. Resistance Measurements.
3-24. Set the Multimeter front panel controls as follows:
kn
AUTO HOLD
VOLTS (V) AND AMP (A)
DC/AC(= ~)
(IN)
AUTO (OUT)
(OUT)
Either
3-25. Connect test leads from the Multimeter V nand
COM connectors to the resistance under test as shown in
Figure 3-7.
~
VO
COM
A
,----: I kV ---., , - 1 . IA-----,
MAX,MAX
0
500V
Fu
~x
E
32 i"A
FUSE
I.SA
~~~
3476- 8-4453
To avoid possible damage to the Multimeter, do
not allow the voltage across the Amps to COM
input terminals to exceed 250 V at any time.
3-2
A
v
Figure 3·7. Resistance Measurement.
Model 3476B
3-26. BATTERY OPERATION.
3-27. Recharging the Battery.
3-28. Battery recharging is accomplished by the following
procedure:
a. Verify that the ac power source (line) matches the
power configuration of the Multimeter by referring to the
power requirement label located below the ac receptacle.
If it is incompatible, refer to Section V for power requirement modification instructions.
b. With the Multimeter Power switch set to Charge
(out), connect the ac line voltage.
c. As specified in Table 1-2, the Multimeter will be fully
recharged within 14 hours.
NOTE
With the Multimeter ON and the proper ac line
voltage connected, the charge on the battery
will be maintained by a trickle charge current.
This charge current is not sufficient to fully
recharge the Battery in 14 hours.
3-29. Operating Time.
3-30. With the Multimeter battery fully recharged, the
typical operating time is eight hours.
Section III
b. Set the POWER switch to CHARGE (out).
c. Allow the Multimeter to fast charge for a
minimum of five minutes.
d. After this period, ac line operation may be
resumed.
e. Do not begin battery operation until the
battery is fully recharged.
3-33. Input Protection Fuses.
3-34. The AMPS input is protected by a 1.5A 250 V fuse
and the OHMS input is protected by a 32 rnA 250 V fuse.
These fuses are located behind the sliding Input Panel as
shown in Figure 3-9,0, @ , @ . Replacement of these
fuses is accomplished by the following procedure:
a. Slide the Input Panel firmly toward the back of the
Multimeter until the fuses protrude.
b. Remove and replace faulty fuse.
To avoid possible damage to the Multimeter,
insure that the correct fuses are used for replacement in the Input Protection circuit.
c. Push fuses firmly into their receptacles and slide the
Input Panel forward to hold fuses in place and align the
input jacks.
3-31. Low Battery Indication.
NOTE
3-32. A low battery condition is indicated when 5 decimal
points appear on the display as shown in Figure 3-8. At this
time the Multimeter should be connected to ac line voltage
to allow the battery to recharge.
Multimeter test lead banana plugs can be used
as a tool to hold the fuses in place while sliding
the Input Panel forward.
NOTE
Multimeter accuracy specifications are not met
during Low Battery Indication.
3-35. AC Line and Battery Fuse Replacement
3-36. Refer to Section V for instruction on the replacement of ac line and battery fuses.
•
•
•
•
•
3-37. SEMICONOUCTOR JUNCTION MEASUREMENTS.
b. Press the A pushbutton. This causes the instrument
to downrange.
a. Connect the Multimeter to the proper ac line
voltage.
a. To measure the forward resistance, connect the cathode of the diode to the COM terminal and the anode to the
nv terminal.
If the Multimeter is inadvertently left on and
becomes completely discharged, the following
procedure should be followed before using the
Multimeter:
3-38. Due to the low output current on the higher ohms
ranges, the 34768 must be down ranged to the lowest ohms
range in order to measure semiconductor junction (diode)
resistance. This can be easily accomplished by the following
procedure:
NOTE
Figure 3-8. Low Battery Indication.
3-3
Section JJl
Model 3476B
c. Press the kD pushbutton and read the forward resistance on the display.
d. To measure the reverse resistance of a diode, reverse
the input connections to the diode and repeat Steps band
c.
3476-8-4421
13
3476-8-4422
NOTE
0)
panel
CD
CD
and
®
®
are fuses located behind sliding
Y: Five section, 7 segment LE 0 readout.
CD
Power ChargelOn Switch: Switches Multimeter power
ON or OFF. Power is on when the pushbutton is depressed. Batteries are being charged whenever ac power is connected to the Multimeter. However, in the CHARGE
position, the battery charge rate is much faster.
CD
OISPL~
OC/AC Selector Switch: Selects dc or ac mode for either
voltage or current measurements. The instrument is in ac
mode when the pushbutton is depressed.
RANGE AUTO/HOLD Selector Switch: Select automatic
ranging mode or hold mode. Hold mode is set with the
switch depressed.
VoltslOhms I nput Terminal: Used in coniunction with
the COM terminal
for measuring ac voltage, dc voltage, or ohms.
®
t9' Ohms I nput Protection Fuse:
\.V the sliding input panel ® .
t'jQ\
32 mA fuse located behind
COM I nput Terminal: Common terminal for ac/dc volts,
~ acldc amps and ohms measurements.
VOLTAGE Selector Switch: Selects voltage function for
either ac or dc voltage measurements.
AMPS Selector Switch: Select amps function for either
ac or dc current measurements.
kn Selector Switch: Selects ohms function for measuring
resistance. Display reads in kilohms.
@IAmpslnputTerminal:usedincOnjUnctionwiththe
COM terminal ® for measuring ac or dc amps.
2AmpslnputprotectionFuse:1.5amPfuselocated
@
behind the sliding input panel ® .
3SlidinglnputPanel:lnthefront(left)positionthispanel
@
allows access to the three input terminals (Vn, COM, A).
When in the back (right) position the input protection
fuses
and
can be removed and replaced.
0)
®
Figure 3-9. Location of Controls and Connectors.
3-4
Model 3476B
Section IV
SECTION IV
THEORY OF OPERATION
4-1. INTRODUCTION.
levels for the input amplifier. The FET switches are controlled by the Logic Con troller.
4-2. This section contains the theory of operation for the
Multimeter. Included are simplified block diagrams and
descriptions of the function of each block.
4-3. Simplified Block Diagram Description (Figure 4-1).
4-4. Signal Conditioning. The signal conditioning block
consist of the input terminals, overload protection fuses
and functional switching. Overload protection fuses provide
protection to the Multimeter circuitry during ac or dc amps
measurements and during ohms measurements.
4-5. Ohms Reference. The ohms current source provides
current for ohms measurements.
4-6. Input Amplifier. The input amplifier provides input
range switching for all five Multimeter functions. This is
accomplished by using FET switches to select different gain
DC
4-7. AC Converter. The AC Converter is an average responding detector used in ac voltage and ac current measurements. The output of the AC Converter is a dc voltage
equal to the rms value of the ac input voltage. In the ac
current mode, the input voltage to the converter is the ac
voltage drop across the 1 ohm current shunt (R45).
4-8. Integrator, Polarity/Zero Detector, Logic Control and
Display. The Multimeter uses the dual slope integration
technique. The Integrator coupled with the PolarityIZera
Detector and the Logic Controller converts the signal from
the conditioning circuits to a digital representation of the
input measurement. This digital representation is viewed on
the 3476 B Display.
4-9. Power Supply. The Power Supply consists of a
Battery and Charger circuit, a DC to DC Converter and a
Series Regulator.
n
+REF~
- REF -JVV"v--o
INPUT
AC
>--+---+-----1 AC
CONVERTER !---,-'-=-..JV\1\o-<
3476-8-4402
POWER
=0--1
BATTERY
1
I--.----<cr::
SWITCH
5V
, CHARGER,
5V
BATTERY
DC TO DC
CONVERTER
1---..-----+1
I3V
POWER
SUPPLY
T
1----+6V
1 - - - - + 1 1 1 (nREFI
1 - - - - LOGIC
GROUND
1-----4V
Figure 4-1. Simplified Block Diagram.
4- 1/4-2
WARNING
I
These servicing instructions are for use by qualified service
personnel only. To avoid electrical shock, do not perform
any servicing other than that contained in the operating instructions unless you are qualified to do so.
Section V
Model 3476B
Table 5-1. Required Test Equipment.
Instrument Type
Characteristics
Recommended Model
Digital Mulumeter
DC Volts: 1V, 10 V. 100 V
Accuracy: .05%
Input Resistance: ;;;'10 Mfl
DC Amp: ;;;'1 Amp
AC Volts: .1 V. 1 V ranges·
Accuracy: .5%
I nput Resistance: 10Mfl
·hp- 3465A
DC Standard
Output: .1 mV to 1000 V
Accuracy: .02%
-hp- 740B
AC Calibrator/High
Frequency: 45 Hz to 10 kHz
Output: 10 mV to 1000 V
-hp 745A/746A
Voltage Amplifier
Accuracy: 0.1 %
Meter Calibrator
(Current Source)
Electronic Counter
Output: 1 A AC or DC
Accuracy: 0.1%
-hp- 6920B
Frequency: 10 kHz
-hp- 5300A/5302A
Accuracy: 0.01 %
Power Su pply
Output: 5 V.l A
ReSistive Decade Box
Ranges: 10 n. 100 n. 1 kn.
10 kn. 100 kn and 1 Mn
Steps
Accuracy: .05%
ReSistors
5-0
-hp- 6294A
General Radio Model
GR 1433Z
10Mn±0.1%
1 Mn ± 0.1%
-hp. Part No. 0698-8194
·hp- Part No. 0698-6369
300 kn ± .1%
1 kn ± .1%
10 K ± .1%
-hp· Part No. 0698-6332
-hp- Part No. 0698-3491
-hp· Part No. 0698-4157
Model 3476B
Section V
SECTION V
MAINTENANCE
54. Equipment required for the performance tests and
adjustment procedures is listed in Table 5-1, Recommended
Test Equipment. EqUipment that satisfies the critical
specifications given in the table may be substituted for a
recommended model.
5-2. This section of the manual contains Performance Tests
and Adjustment Procedures. The Performance Tests are
designed to verify the critical specifications listed in Table
1-1. A Performance Test Card is at the end of this section
for recording the results of the performance tests.
5-3. Test Equipment Required.
5-1. INTRODUCTION.
PERFORMANCE TESTS
5-5. PERFORMANCE TESTS.
NOTE
Performance tables are included for both 90
day and 1 year calibration cycles. Be sure to use
the appropriate table, depending on the calibration cycle to be used for your instrument.
To avoid possible damage to the Multimeter
circuitry, the dc input voltage must not exceed
1000 Vdc.
5-8. DC Ammeter Accuracy Test.
5-6. DC Voltmeter Accuracy Test.
5-9. This test requires the use of a Power Supply and a DC
Ammeter.
5-7. A DC Standard is required for this test.
a. Set the Multimeter to measure dc volts. Short the
input terminals and check for a display of zero ± 1 count.
b. Connect the DC Standard to the
nals.
vn and COM termi-
c. Check all the ranges listed in Table 5-2 for the tolerances indicated. Be sure to test for the appropriate calibration cycle.
a. Connect the equipment as shown in Figure 5-1.
b. Set the DC Ammeter to the 1000 rnA range.
c. Set the Multimeter function to DC A. Adjust the
Power Supply output for an indication of 900 mA on the
DC Ammeter. The Multimeter should indicate within the
limits listed in Table 5-3.
Table 5-2. DC Voltmeter Accuracy Test.
Test Limits
Range
DC Standard
Output
90 Day Calibration Cycle
1 Year Calibration Cycle
+ 995
+ 1000 V
1100 V
- 9.94 to - 10.06
+ 9.94 to + 10.06
·9.96 to - 10.04
+ 9.96 to + 10.04
- 10.00 V
+10.00V
11 V
- .994 to - 1.006
- .996 to· 1.004
V
- 1.00
1.1 V
- .0097 to - .0103
. .0995 to· .1005
+ .0995 to + .1005
- .010 V
- .100 V
+ .100 V
.11 V
to + 1005
- .0097 to - .0103
- .0994 to· ..1006
+ .0994 to + .1006
+ 993
to + 1007
5-1
PERFORMANCE TESTS
Section V
POWER SUPPLY
hp 6294A
Model 3476B
DIGITAL MULTIMETER
hp 3465A
MULTI METER
G r0=:J
3476-8-4414
Figure 5-1. DC Ammeter Accuracy Test.
5-12. AC Voltage Accuracy Test.
Table 5-3. DC Ammeter Accuracy Test.
Range
Current
1.1 A
900 mA
90 Day
Calibration Limit
.891 thru .909
1 Year
Calibration Limit
5-13. An AC Calibrator and High Voltage Amplifier will be
required for this test.
.889 thru .911
5-10. Ohms Accuracy Test.
5-11. A precision resistance decade box will be required for
the following test. It should have an accuracy of .05%.
a. Set the FUNCTION switch to kn and connect a
short between the v/n terminal and COM. The Multimeter
should indicate zero ± I count.
b. Remove the short and connect the equipment as
shown in Figure 5-2. Use large wire and connect the decade
box as close as possible to the Multimeter. When checking
the 11,000 kn range, connect the COM terminal to a good
earth ground.
To avoid possible damage to the Multimeter
circuitry, the ac input voltage must not exceed
707 Vrms.
a. Set the Multimeter to AC V. Connect the AC Calibrator between the vn and COM terminals. Be sure to connect the Calibrator sense leads.
b. Check the ranges and frequencies listed in Table 5-5
for the tolerances indicated on all ranges through 110 V.
c. Check all ranges listed in Table 5-4 for the tolerances
indicated. Use the resistance decade box to supply the
standard resistances.
WARNING
MULTI METER
hp 3476
I
Use extreme care when checking the following
ranges. Establish all connections before turning
on the high voltage source. When the tests are
completed, turn ojf the high voltage before disconnecting any cables or test leads.
C-9U
RESISTANCE
DECADE
BOX
c. To check the 1100 V range, connect the AC Calibrator and High Voltage Amplifier to the Multimeter and
check the tolerances indicated for the 1100 V range.
3476~B~4415
Figure 5-2. Ohms Accuracy Test.
Table 5-4. Ohms Accuracy Test.
Test Limits (kn)
Range (kn)
1.1
5-2
Standard
Resistance
90 Day Calibration Cycle
100 n
1 kn
.098
.994
thru .102
thru 1.006
.098
.992
thru .102
thru 1.008
1 Year Calibration Cycle
11
10 kn
9.94
thru 10.06
9.92
thru 10.08
110
100 kn
99.6
thru 100.4
99.4
thru 100.6
1100
1000 kn
996
thru 1004
994
thru 1006
11,000
10.000 kn
9940
t1lrU
10.060 kn
9920 thru 10,080 kn
Model 3476B
PERFORMANCE TESTS
Section V
Table 5-5. AC Voltage Accuracy Test.
Test Limits (V)
Range
AC Standord
Output
Test
Frequency
500 Hz
45 Hz, 2 kHz
45 Hz, 2 kHz
5 kHz
5 kHz
10 kHz
10 kHz
45 Hz, 2 kHz
5 kHz
10 kHz
700 V
700 V
700 V
1100 V
4.5 Hz, 2 kHz
5 kHz
10 kHz
100 V
100 V
100 V
110 V
45 Hz, 2 kHz
5 kHz
10 kHz
V
V
V
10
10
10
11 V
V
V
V
1
1
1
1.1 V
V
V
V
V
V
V
V
.003
.01
.1
.01
.1
.01
.09
.11 V
45 Hz, 2 kHz
5 kHz
10 kHz
90 Day
.0023 to .0037
.0091 to .0108
.0978 to .1022
.0088 10 .0112
.0943 to .1057
.0071 to .0129
.0727to.1073
to 1.019
to 1.037
to 1.091
1 Year
.0021
.0090
.0975
.0087
.0940
.0069
.0724
to .0038
to .0109
to .1025
to .0113
to .1060
to .0130
to .1076
to 715
to 728
to 767
685
672
633
97.7
96.0
90.5
to 101.9
to) 103.7
to 109.1
98.0
96.3
90.9
to 10.23
to 10.40
to 10.94
9.77
9.60
9.05
9.80 to 10.19
9.63 to 10.37
9.09 to 10.91
to 1.023
to 1.040
to 1.094
.977
.960
.905
.980
.963
.909
to 102.3
to 104.0
to 109.4
to 717
to 730
to 770
682
669
630
5-15. AC Common-Mode Rejection Test.
5-14. AC Ammeter Accuracy Test.
a.
Connect the equipment as shown in Figure 5-3.
5-16. An AC Calibrator and a 1 kilohm ± I % resistor are
req uired for this test.
b. Set the AC Ammeter to the 1000 mA range.
c. Set the Multimeter FUNCTION to AC A. Adjust the
Meter Calibrator output for an indication of 900 rnA on the
AC Ammeter. The Multimeter should indicate within the
limits listed in Table 5-6.
~
a. Connect a 1 kilohm resistor between the V /n and
COM Multimeter terminals.
b. Set the Multimeter FUNCTION to AC V.
c. Connect the AC Calibrator HI output terminal to the
Multimeter as shown in Figure 54.
d. Set the AC Calibrator frequency to the ac line frequency being used.
ACiDC METER
CALIBRATOR
6920B
hG~~
e. Set the AC Calibrator output to lOa V rms.
MULTI METER
hp 3476
~19~
l
DIGITAL MULTIMETER
f. The Multimeter should indicate ,,;; 10 mV rms.
5-17. DC Common-Mode Rejection Test.
5-18. An AC Calibrator, an electronic counter, and a I kilohm ± I % resistor are required for this test.
hp 3465A
I ""~.,,.~
a. Connect a I kilohm resistor between the V /n and
COM Multimeter terminals.
~4"6-8-UI:>
b. Set the Multimeter FUNCTION to DC V.
Figure 5-3. AC Ammeter Accuracy Test.
c. Connect the AC Calibrator HI output terminal to the
Multimeter as shown in Figure 54.
d. Set the AC Calibrator frequency to the ac line frequency being used (50 Hz or 60 Hz ± .1 %).
Table 5-6. AC Ammeter Accuracy Test.
.878 thru ,922
900 mA
1.1 A
90 Day
Calibration Limit
Current
Range
1 Year
Calibration Limit
.875 thru .925
e. Set the AC Calibrator output to 100 V rms.
f. The Multimeter should indicate ,,;; 1.5 mV peak.
5-3
Section V
PERFORMANCE TESTS
Model 3476B
MULTI METER
hp 3476
CyJJ~
IK
±I%
'------------------',.=76 B
4452
Figure 5-4. Common-Mode Rejection Test.
f
i
5-4
Model 3476B
WARNING
Section V
I
These servicing instructions are for use by qualified personnel only. To
avoid electrical shock, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do
so.
Wear clean cotton gloves when working on the main assembly circuit
board or switches. Contamination or fingerprints on high impedance
points on the main assembly will degrade the preformance of the
instrument. Nylon gloves should not be worn due to the possibility of
static charge buildup.
The hybrid circuits in the Multimeter may be permanently damaged by
static discharge from a hand or tool when the Multimeter is disassembled. The procedures below must be followed to prevent possible
damage.
1. Ground the hand while disassembling and working on the Multimeter. Conductive wristbands (-hp- Part No. 00970-67900) are available for this purpose.
2. A ttach the Multimeter COM terminal to earth ground. Touch all
tools to earth ground to remove static charges before using them on the
Multimeter.
3. Use a soldering iron with a grounded tip.
PRE·ADJUSTMENT PROCEDURES.
A. Disassembly Instructions.
I. Remove the Multimeter Power Cord.
6. Connect a jumper across the Amps input protection
fuse holder and across the Ohms input protection fuse
holder.
B. Turn-On Instructions.
1. Connect the Multimeter TP
2. With the Multimeter in the inverted position, remove
the two screws in the bottom cover.
3. Remove the bottom cover and place the Batteries to
the back of the Multimeter without disconnecting the
battery leads.
Q
to earth ground.
2. Use fully charged batteries or ac line voltage to power
the Multimeter while making adjustments.
NOTE
4. Remove the internal shield.
Batteries must be connected during battery or
ac operation.
5. Remove the Input panel and Input fuses.
5-5
ADJUSTMENT PROCEDURES
Section V
5-19. ADJUSTMENT PROCEDURE.
5-20. Refer to Figure 5-5 for the following adjustments.
NOTE
The resistors used in the adjustment procedure
must be floating.
Model 3476B
NOTE
The following adjustment requires the same test
setup. Do not change the setup of FUNCTION
settings.
5-25. Integrator Amplifier Zero Adjustment.
5-21. Power Supply Adjustment.
5-26. This test requires the same test setup and functions
as the previous adjustment.
a. Connect a DC Digital Voltmeter between + 6 V test
point and ground.
a. Adjust RIO for a display equal to - 1000 times the
value at Test Point A in the previous adjusment, ± I count.
b. Adjust R47 for 5.94 to 6.06 V de on the Digital
Voltmeter.
Example:
Voltage at A = .2 mV
.2 mV x(- 1000) = . 00.2 V Display
c. If it is not possible to adjust within this limit, change
the adjustment range of R47 by replacing or removing
JMPR 7. Removing JMPR 7 will allow a more positive adjustment of TP + 6.
b. If RIO does not have sufficient range for this adjustment, remove R20 and repeat Step a. If R20 has already
been removed, it may be necessary to replace it with the
value listed in Table 6-3.
5-22. Substrate Adjustment.
a. A I kilohm resistor should still be connected between
the VIn and COM terminals. Connect a jumper between
the + I test point and TP G.
b. Ensure that the Multimeter downranges to the
1.1 kn range and adjust R42 for an indication between
.078 and .082 on the display. If these limits cannot be obtained, an indication of 000 to 078 is acceptable if R42 is
fully counterclockwise.
NOTE
Removing R20 changes the display in a pusitive
direction.
5-27. + DC Volt Gain Adjustment.
5-23. Input Amplifier Zero Adjustment.
a. Remove the DC Digital Voltmeter and jumper between UI pin 12 and analog ground. Release the HOLD
function, and remove the short from the input.
5-24. The following adjusment requires that the Multimeter be set to a DC V function, 110 V range with no input
applied. Since the Multimeter is auto ranging, it is necessary
to force it to the 110 V range and then use the HOLD function to keep it there.
b. Set the Multimeter FUNCTION to DC V. Apply an
input of + 1.000 V de. The Multimeter should autorange to
the 1.1 V range for this adjusment.
a. Remove the jumper connected between + a and TP G
in the previous step.
b. Set the function to kn and connect a I megohm
resistor between the n/V and COM terminals. When the
Multimeter autoranges to the 1.1 megohm range, push the
HOLD pushbutton in. This is equivalent ot the I 10 V
range.
c. Change the Multimeter FUNCTION to DC V. Remove the I megohm resistor from the input and replace it
with a short.
c. Adjust R47 for a display of 1.000. If R47 does not
have sufficient range, change the adjusment range of R47
by replacing or removing JMPR 7. Removing JMPR 7 will
allow a more positive adjustment of TP +6 and change the
display in a negative direction.
5-28. - DC Volt Gain Adjustment.
a. Leave the Multimeter FUNCTION set to the DC V
and HOLD function out. Change the input from + 1.000 to
- 1.000.
b. Adjust RI4 for a Multimeter display of - 1.000 V de.
d. Connect a jumper between UI pin 12 and analog
ground (TP Q ).
e. Connect the DC Digital Voltmeter to Test Point A.
Adjust R38 for an indication between -.3 and +.3 mV de on
the Digital Voltmeter.
5-6
5-29. Clock Frequency Adjustment.
a. Set the Multimeter FUNCTION to DC V, HOLD
Function out and - 1.000 volts connected to the input.
Model 3476B
ADJUSTMENT PROCEDURES
b. Connect an electronic counter to test point D. If the
Multimeter is to be operated from a 60 Hz line frequency,
adjust R43 for an indication of954 Hz on the counter. For
50 Hz line operation, adjust R43 for 795 Hz ± 10 Hz.
Section V
5-32. AC High Frequency Adjustment (.11 V rangel.
a. Set the Multimeter FUNCTION to AC V.
b. Apply a 0.1 V ac signal at 5 kHz to the input. Release the HOLD function and allow the Multimeter to autorange to the .1 V range.
5-30. Ohms Adjustment.
a. Connect a jumper wire across the fuse that protects
the VIn terminal (F2).
b. Set the Multimeter FUNCTION to k.12 and connect a
I megohm ± 0.1 % resistor to the input.
c. Adjust R15 for a display of 999 to 1001.
d. Change the input resistor to 10 kilohm, ± 0.1 %.
e. Adjust R16 for a display of 10.03 to 10.04.
f. Remove the jumper from the fuse.
NOTE
c. Adjust C4 for a display between .1000 and .1 0 10.
5-33. Changing the Power Line Options.
5-34. The Multimeter is capable of operating at any of the
line voltages and frequencies listed in Table 1-3, depending
upon how the instrument is wired internally. The instrument contains a label identifying the line voltage and frequency for which it is wired. If the instrument is to be
operated at a line voltage and frequency other than the one
for which it is wired, it is necessary to change the position of jumper wires in the power transformer primary
circuit. The clock frequency will have to be readjusted if a different line frequency is used.
The resistance of the fuse is a part of the instrument calibration. This is why the display is
adjusted high in Step 3, with the fuse shorted.
5-31. AC Converter Gain and Zero Adjustment.
a. Disconnect the previous setup and set the Multimeter
FUNCTION to ACV.
NOTE
To go to the 1.1 V range and HOLD, set the
Multimeter FUNCTION to V AC, and apply
0.3 V to the input. When on the 1.1 V range,
push the HOLD pushbutton in.
b. Apply a 1.0 V ac signal at 100 Hz to the input.
c. Adjust R48 for a display between .995 and .997.
d. Change the input level to 0.100 V ac at 100 Hz.
Adjust R9 for a display between .099 and .100.
NOTE
If the jumper wires are changed, be sure to attach a new label to the instrument, identifying
the new configuration.
5-35. Figure 7-2 shows the position of all jumper wires for
each line voltage. The component locator drawing of the assembly identifies the position of each numbered jumper.
I
WARNING'
Before changing the power supply jumpers disconnect AC power from the instrument. Power
supply jumpers should be changed by qualified
service personnel only.
5-36. AC Line and Battery Fuse Replacement.
5-37. With the Multimeter inverted and the bottom cover
removed, both fuses are easily accessible for testing.
e. Change the input back to 1.00 V ac at 100 Hz.
Adjust R48 for a display between .995 and .997.
f. Change the input back to 0.100 V ac at 100 Hz.
Adjust R9 for a display between .099 and .100.
Disconnect the battery leads before unsoldering
the battery fuse Fl 00.
5-7/5-8
- B CONNECTOR
AC CONVERTER
GAIN
'OW," SU'" y AO"
(+ DC GAIN ADJ)
-8
~
FI
J3
A
. NMOS SUBSTRATE
ADJ
+B CONNECTOR
INPUT AMP
J4
COM
Ii
F!
38
~
ZEROADJ
R
43
J5
VIl.
~
AC CONVERTER
ZERO ADJ
CLOCKFREQ
ADJ
COMPARATOR
OUTPUT
AC HIGH FREQ
ADJUST
'
B
INTEGRATOR
ZERO ADJ
I
,
,
I
o
56
- DC
GAIN ADJ
INPUT AMPLIFIER
OUTPUT
OHMS
ADJ
BACK GATE
BIAS
DISPLAY STROBE FREQ
50 Hz LINE = 795 Hz
60 Hz LINE = 954 Hz
Figure 5-5. Adjustment Locator.
5-9(5-10
Hewlett-Packard Model 34766
Multimeter
Serial No.
_
Tests Performed By:
Date
_
_
PERFORMANCE TEST CARO
Test Limit
Test Result
Paragraph
Number
5-6
5-8
Test
90 Day Calibration Cycle
1 Year Calibration Cycle
DC Voltmeter Accuracy
+ 995.0 to + 1005.0
1100 V Range
+ 1000 V
- 99.5 to· 100.5
110 V Range
100 V
- 9.94 to . 10.06
+9.94 to+10.06
- 9.96 to - 10.04
+9.96 to + 10.04
11 V Range
- 10 V
+lOV
+ .994
+.996 to+l.004
1.1 V Range
+ 1.0 V
.0097 to - .0103
.0994 to- .1006
+ .0994 to + .1006
- .0097 to- .0103
.0995 to- .1005
+ .0995 to + .1005
.11 V Range
.010 V
.100 V
+ .100 V
99.3
+ 993
to + 1.006
to - 100.7
to + 1007.0
DC Ammeter Accuracy
900mA
5-10
.891 thru .909
.889 thru .911
9920 thru 10,080
9940 thru 10,060
11,000 kl1 Range
10,000 kl1
994
996
1100 kl1 Range
1000 kl1
99.4 thru 100.6
99.6 thru 100.4
110 kl1 Range
100 kl1
9.92
994
11 kl1 Range
10 kl1
.0980 lhru .102
.994 lhru 1.006
Ohms Accuracy
1.1 kl1 Range
.1 kl1
1.0 kl1
.098 thru .102
.992 thru 1.008
thru 10.06
thru 1004
lhru 10.08
thru 1006
AC Voltmeter Accuracy
5-12
685
672
633
45 Hz, 2 kHz
5 kHz'
10 kHz
1100 V Range
700 V
700 V
700 V
97.7 to 102.3
96.0 to 104.0
90.5 to 109.4
98.0 to 101.9
96.3 to 103.7
90.9 to 109.1
45 Hz, 2 kHz
5 kHz
10 kHz
110
100
100
100
9.77 to 10.23
9.60 to 10.40
9.05 to 10.94
9.80 to 10.19
9.63 to 10.37
9.09 to 10.91
45 Hz, 2 kHz
5 kHz
10 kHz
11 V Range
10 V
10 V
10 V
.977
.960
.905
.980 to 1.019
.963 to 1.037
.909 to 1.091
45 Hz, 2 kHz
5 kHz
10 kHz
1.1 V Range
1
V
1
V
1
V
500 Hz
45 Hz. 2 kHz
45 Hz, 2 kHz
5 kHz
5 kHz
10 kHz
10 kHz
.11 V Range
.003 V
.01 V
.1
V
.01 V
.1
V
.01 V
.09 V
V Range
V
V
V
.0023
.0091
.0978
.0088
.0943
.0071
.0727
to .0037
to .0108
to .1022
to .0112
to .1057
to .0129
to .1073
.0021 to
.0090 to
.0975 to
.0087 to
.0040 to
.0069 to
.0724 to
to 715
to 228
to 767
682
669
630
.0038
.0109
.1025
.0113
.1060
.0130
.1076
1.023
1.040
1.094
to
to
to
to 717
to 730
to 770
Model 3476B
Section VI
SECTION VI
REPLACEABLE PARTS
6-7. To obtain a part that is not listed, include:
6-2. This section contains information for ordering replacement parts. Table 6-3 lists parts in alphameric order of their
reference designators and indicates the description, -hpPart umber of each part, together with any applicable
notes, and provides the following:
6-6. NON-LISTED PARTS.
6-1. INTRODUCTION.
a. Total quantity used in the instrument (Qty column).
The total quantity of a part is given the first time the part
number appears.
b. Description of the part. (See list of abbreviations in
Table 6-1 .)
c. Typical manufacturer of the part is a five-digit code.
(See Table 6-2 for list of manufacturers.)
d. Manufacturer's part number.
6-3. Miscellaneous parts are listed in Table 6-3 following
their respective assemblies. General miscellaneous parts are
listed at the conclusion of Table 6-3.
6-4. ORDERING INFORMATION.
6-5. To obtain replacement parts, address order or inquiry
to your local Hewlett-Packard Field Office. (See Appendix
A for list of office locations.) Identify parts by their
Hewlett-Packard part numbers. lnclude instrument model
and serial numbers.
a. Instrument model number.
b. Instrument serial number.
c. Descri ption of the part.
d. Function and location of the part.
6-8. PARTS CHANGES.
6-9. Components which have been changed are so marked
by one of three symbols; i.e., t:>., t:>. with a letter subscript,
e.g., t:>.a' or t:>. with a number subscript, e.g., t:>.l o. A t:>. with
no subscript indicates the component listed is the preferred
replacement for an earlier component. A t:>. with a letter
subscript indicates a change which is explained in a note at
the bottom of the page. A t:>. with a number subscript indicates the related change is discussed in backdating (Section
VIll). The number of the subscript indicates the number of
the change in backdating which should be referred to.
6-10. PROPRIETARY PARTS.
6-11. Items marked by a dagger (t) in the reference designator column are available only for repair and service of
Hewlett-Packard instruments.
6-1
Section VI
Model 3476B
Table 6-1. Standard Abbreviations.
Ag
AI
A.
Au
....silver
...... aluminum
..... ampere(s)
· ...... gold
C ..
cer
coef
capacitor
......ceramic
· .. coefficient
....... common
...... composition
. . . . connection
comp
conn
dep
OPOT
OPST
deposited
double-pole single throw
ele<'trolytlc
· .enCdpsU Idled
F
FET
fxd
H.
Hg .
10
impg
incd
ins
kr2.
kHz ..
. inside diameter
. impregnated
.incandescent
.. insulation(ed)
......... kilohm(s) = 10+ 3 ohms
. kilohertz = 10+ 3 hertz
L .
lin
log.
.. inductor
..... linear taper
. . . . . . . . logarithmic taper
mA
MHI
milliampere(s) = 10-3 amperes
. . megahertz = 10+ 6 hertz
... megohm(s) - 10+ 6 ohms
.. .. metalfilm
... manufacturer
... millisecond
... double-pole double throw
....
elect
encap
GaAs.
GHz
gd
Ge
gnd
ABBREVIATIONS
.... hertz (eycle(s) per second)
NPO
Hz
· ..farad(s)
. field effect transistor
· ....fixed
gallium arsenide
. glgahertl
10 t9 hertl
guaflJ(ed)
germanium
grounrHedl
.............
henry(lest
. mercury
M~2
rnetflm
mfr
mtg
mV
J.1F
J.1s
J.1V
nA
NC
Ne
NO
:: ::
'~i'lli~~I~isi '=' ;r;~~~~~~
. microfarad(s)
. . . . . . . . .. . microsecond(s)
.... microvolt(s) = 10- 6 volts
.Mylar@
. nanoampere(s) = 10- 9 amperes
.. normally closed
..... neon
... normally open
.. negative positive zero
(zero temperature coefficient)
........ nanosecond(s) = 10-9 seconds
... not separately replaceable
r2
obd
00
......... ohm(s)
...... order by description
........outside diameter
p
.
... peak
...picoampere(s)
printed circuit
.
picofarad(s) 10- 12 farads
.
'
peak inverse voltage
· part of
.. position(s)
...... polystyrene
.. potentiometer
· .peak-to-peak
.. parts per million
. precision (temperature coeffient,
long term stability andlor tolerance)
pA.
pc .
pF .
piv ..
plo
pos
poly
pot
p-p
ppm
prec.
R
Rh ..
rms ..
rot.
sl.
SPOT
SPST
Ta
TC ..
Ti02·
tog
tol
trim ..
TSTR
V.
var.
vdcw.
W ...
wi ..
wiv
wlo
· ..... resistor
· .rhodium
. root-mean-square
. rotary
Se
sect.
Si
·
.. slide
.. single-pole double-throw
. . single-pole single-throw
....tantalum
..... temperature coefficient
.......titanium dioxide
... toggle
..... tolerance
.. trimmer
.
transistor
..volt(s)
... alternating current working voltage
....variable
direct current working voltage
......... watt(s)
.. with
.. working inverse voltage
...... without
.. wirewound
....optimum value selected at factory,
average value shown (part may be omitted)
no standard type number assigned
selected or special type
.selenium
.. section(s)
silicon
®
Oupont de Nemours
DECIMAL MULTIPLIERS
Prefix
Symbols
Multiplier
Prefix
Multiplier
Symbols
tera
T
10 12
centi
giga
G
109
106
10 3
10 2
milli
10-3
micro
10-6
10-9
pico
10- 12
10
femto
10- 15
10- 18
mega
kilo
M or Meg
K or k
hecto
deka
deci
da
10-2
10- 1
STO-B-2734
DESIGNATORS
A.
B.
BT.
C.
CR
OL
OS.
E ..
F
...assembly
motor
battery
· capacitor
.. diode
· .. delay line
.Iamp
. misc electronic part
· .... fuse
·
·
FL
HR
IC
J ..
K.
L.
M
MP
P.
... filter
.heater
integrated circuit
.. jack
...... relay
... inductor
... meter
...... mechanical part
plug
0
OCR
R.
RT .....
S
T.
TB
TC
TP.
· transistor
transistor-diode
· resistor
thermistor
· .switch
..... transformer
. terminal board
· thermocouple
· test POint
TS . .
. .... terminal strip
. microcircuit
. .. vacuum tube, neon bulb,photocell, etc.
W
.. cable
X .
.
socket
XOS
lampholder
XF
fuseholder
Y
. crystal
Z
. network
U
V.
Table 6-2. Code List of Manufacturers.
Mfr
6-2
No.
Oescr ilJt ion
01121
03888
04713
07088
07263
077.16
16299
24546
27014
28480
56289
71400
72136
74970
75915
Allen-Bradley Co
Pyrofilrn Corp
Motorola Semiconductor Products
Kelvin Electric Co
F<Jirchild Serniconductor Div
TRW Inc Burlington Div
Corning GI Wk Elec Cmpnt Div
Corning Glass Works (Bradford)
National Semiconductor Corp
Hewlett-Packard Co Corporate HQ
Sprague Electric Co
Bussman M fg Div of McGraw-Edison Co
Electro Motive Mfg Co Inc
Johnson E F Co
Littelfuse Inc
Adelress
Milwaukee, WI
Whi rpllnY, NJ
Phoenix, AZ
Van Nuys, CA
Mountllin View, CA
Burlington, IA
Raleight, NC
Bradford, PA
Santa Clara, CA
Palo Alto, CA
North Adams, MA
St. Louis, MO
Willimantic, CT
Waseca, MN
Des Plaines, I L
Zil1
Code!
53212
07981
85008
91401
94040
52601
27604
16701
95051
94304
01247
63017
06226
56093
60016
Model 3476B
Section VI
Tab I e 6 -3 . Rep I ace a b I ePa r t 5 (C 0 n t' d)
Reference
Designation
HP Part Number
Qty
Description
Mfr
Code
Mfr Part Number
1
1
2
1
1
0698-4532
0698-4539
0698-4453
0757-0472
0698-4479
A1R20
Al R22
Al R23
A1R24
A1R25
RESISTOR,
RESISTOR,
RESISTOR
RESISTOR
RESISTOR
2
1
1
4
1
2100-3524
2100-3529
0683-1065
0683-1035
0698-4512
A1R15
A1R16
A1R17
A1R18
A1R19
28480
28480
01121
02995
28480
VAR lOOK OHM 20%
VAR 50K OHM 20%
22M 5% .25W FC TC=-900/+1200
1M 1% .50W
VAR 100 OHM 20%
RESISTOR,
RESISTOR,
RESISTOR
RESISTOR
RESISTOR,
2
2
1
1
1
2100-3522
2100-3524
0683-2265
0757-0059
2100-3528
A1R9
A1Rl0
A1R12
A1R13
A1R14
07716
05524
01121
03292
01121
10M 1% 2W F TC=0+-100
5K 1% 2W MO TC=+-200
2M 5% .25W FC TC=-900/+1100
3480 OHM 1% .125W F TC=0+-100
lOOK 5% .25W FC TC=-400/+800
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
1
1
1
1
1
0698-7512
0811-0006
0683-2055
0698-3152
0683-1045
A1Rl
A1R2
A1R3
A1R4
A1R8
MPS6562
1854-0071
1853-0020
04713
28480
28480
TRANSISTOR PNP SPS 6804K
TRANSISTOR NPN SI PD=300MW FT=200MHZ
TRANSISTOR NPN SI PD=300MW FT=150MHZ
1853-0318
1854-0071
1853-0020
Al0l02
A 10103-105
Al0l06,107
1854-0071
1855-0308
1853-0020
2N3725
1205-0011
1854-0071
28480
28480
28480
01295
28480
28480
1854-0071
1855-0308
1853-0020
1854-0547
1205-0011
1854-0071
Al0l0l
Al02 - 014
Al015
Al017
Al0l00
9170-0016
Al L100-102
CONNECTOR-15 PIN FEMALE FOR DSMl
RECEPTACLE, AC POWE R
SPRING, FUSE CONTACT (INPUT TERMINAL)
1
1
3
1251-4261
5040-8013
1460-1486
A1Jl
A1J2
A1J3 - J5
FUSE .063A 250V SLO-B LO 1.25X.25 U L I EC
FUSE .032A 250V 1.25X.25 UL
FUSE 1.5A 250V 1.25X.25 UL IEC
FUSE 1A 125V .281 X.093
FUSEHOLDER-CLIP TYPE .25FUSE
1
1
1
1
2
2110-0311
2110-0420
2110-0043
2110-0099
2110-0269
A1Fl
A1F2
A1F3
A1Fl00
LED DISPLAY INCLUDING 15 PIN A1Pl
1
03476-69502
A1DSMl
DIODE-ZENER 7.32V 5% 00-7
DIODE-ZENER 4.75V 5% 00-7
1
1
1902-3128
1902-3085
A1CR104
A1CR105
DIODE-ZNR 5.11V 5% 00-7 PD=.4W TC=-.009%
DIODE-FW BRDG 400V lA
DIODE-SWITCHING 30V 50MA 2NS 00-35
DIODE GE 30V 80MA 8NS 007
1
1
5
2
1902-0041
1906-0069
1901-0040
1910-0034
A1CR12
A1CR14
A1CR100
A1CR10l,102
DIODE-ZNR 3.65V 5% 00-7 PD=.4W TC=-.055%
DIODE-GEN PRP 100V 200MA 00-7
DIODE-GEN PRP 35V 50MA 00-7
DIODE-ZNR 3.65V 5% 00-7 PD=.4W TC=-.055%
DIODE-SWITCHING 30V 50MA 2NS 00-35
2
2
2
2
5
1902-3054
1901-0025
1901-0376
1902-3054
1901-0040
A1CRl
A1CR2, CR3
A1CR5, CR6
A1CR7
A1CR9, 10, 11
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
2
1
2
1
1
0180-0106
0160-0157
0180-0210
0180-0339
0160-0575
A 1Cl07, Cl08
A1Cl09
A1Clll
A1Cl12
A1Cl13
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
CAPACITOR-FXD
2
2
2
1
2
0160-2150
0180-1701
0160-3847
0180-0309
0160-0153
0160-3847
0180-0210
0180-0229
0160-0153
0140-0207
0180-0228
A1Cll
A1C12
A1C17, C18
A1C19
A1C20
A1C21, C22
A1Cl00
A1Cl0l, Cl02
A1Cl04
A1Cl05
A1Cl06
CAPACITOR-FXD .01 UF +-20% 1000WVDC CER
CAPACITOR-FXD .01 UF 25WVDC CER
CAPACITOR-V TRMR-AI R 1.0 TO 3.5 PF
CAPACITOR-FXD 1UF +-10% 35VDC TA
CAPACITOR-FXD 390PF +-5% 300WVDC MICA
CAPACITOR-FXD 1.8UF +-20% 50WVDC MET
CAPACITOR-FXD 22UF +-10% 15VDC TA
CAPACITOR-FXD .01UF +80-20% 25WVDC CER
1
4
1
1
1
1
2
0150-3731
0160-3847
0121-0487
0180-0291
0140-0200
0160-0577
0180-0228
0160-3847
A1Cl
A1C3
A1C4
A1C5
A1C7
A1C8
A1C9
A1Cl0
BATTERY 4.8V lA-HR RECHARGEABLE
1
03476-68001
A1BT100
PC ASSEMBLY MAIN BOARD
1
03476-66510
Al
1
1
1
2
33PF +-5% 300WVDC MICA
6.8UF +-20% 6VDC TA
.01UF +80-20% 25WVDC CER
4.7UF +-20% 10VDC TA
1000PF +-10% 200WVDC
.01UF +80-20% 25WVDC CER
3.3UF +-20% 15VDC TA
33UF +-10% 10VDC TA
1000PF +-10% 200WVDC
330PF +-5% 500WVDC MICA
22UF +-10% 15VDC TA
60UF +-20% 6VDC TA
4700PF 200WVDC
3.3UF +-20% 15VDC TA
50UF +75-10% 16VDC AL
.047 UF +-10% 50WVDC CER
TRANSISTOR NPN SI PD=300MW FT=200MHZ
TRANSISTOR-JFET DUAL N-CHAN D-MODE SI
TRANSISTOR NPN SI PD=300MW FT=150MHZ
TRMJSISTOR NPN 2N3725
HEAT SINK SGL
TRANSISTOR NPN SI PD=300MW FT=200MHZ
17
1
3
1
1
FERRITE BEAD
3
1
RESISTOR
RESISTOR
RESISTOR
RESISTOR
RESISTOR
VAR 50K OHM 20%
VAR lK OHM 20%
10M 5% .25W FC TC=-900/+1100
10K 5% .25W FC TC=-400/+700
88.7K 1% .125W F TC=0+-100
280K 1% .125W F TC=0+-100
402K 1% .125W F TC=0+-100
402 1% .125W F TC=0+-100
200K 1% .125W F TC=-+-100
14K 1% .125W F TC=0+-100
28480
28480
28480
28480
04935
56289
62136
28480
56289
28480
28480
56289
28480
56289
56289
28480
56289
56289
56289
04522
56289
03476-66510
03476-68001
0150-3731
0160-3847
2222-809-05001
150Dl05X9035A2
DM15F391J0300WVl CR
0160-0577
150D226X9015B2
0160-3847
0160-2150
150D685XOO06A2
0160-3847
150D475X0010A2
292Pl0292
0160-3847
150D335XOO15A2
150D33X9010B2
292Pl0292
DM15F331J0500WVl CR
150D226X9015B2
9170-0016
28480
1251-4261
5040-8013
1460-1486
28480
28480
28480
313.062S
312.031
AGC 1-1/2
275001
6008-32CN
75915
75915
71400
75915
91506
03476-69502
28480
SZ 10939- 143
SZ 10939-89
04713
04713
SZ 10939-98
1906-0069
1901-0040
1910-0034
04713
28480
28480
28480
SZ 10939-56
1901-0025
1901-0376
SZ 10939-56
1901-0040
04713
28480
28480
04713
28480
150D606XOO06B2
292P47292
150D335XOO15A2
30D506G016CB2
0160-3042
56289
56289
56289
56289
28480
CCF-993-N330
RS-5
CB2055
C4-1/8-TO-3481 - F
CB1045
2100-3522
2100-3524
CB2265
MF7Cl/2-TO-l004-F
2100-3528
C4-1/8- TO-2803-F
PME55S
C4-1/8- TO-402R-F
C4-1/8-TO-2003- F
C4-1/8-TO-1402-F
24546
03888
24546
24546
24546
2100-3524
2100-3529
CB1065
CB 1035
C4-1/8-TO-8872-F
28480
28480
01121
01121
24546
6-3
Section VI
Model 3476B
Table 6-3. Replaceable Parts(Cont'd)
Reference
Designation
Qty
Description
Mfr
Code
Mfr Part Number
A1R26
A1R27
A1R28
A1R29
A1R31
0757-0283
0757-0442
0698-4453
0698-4424
0683-1025
2
1
2
1
1
RESISTOR 2K 1% .125W F TC=0+-100
RESISTOR 10K 1% .125W F TC=0+-100
RESISTOR 402 1% .125W F TC=0+-100
RESISTOR l.4K 1% .125W F TC=0+-100
RESISTOR-FXD 1000 OHM 5% .25W FC TC=-400/+600
24546
24546
24546
16299
01121
C4-1/8- TO-2001-F
C4-1/8- TO-l002-F
C4-1/8-TO-402R-F
C4-1/8-TO-1401-F
CB1025
A1R34
A1R35
A 1R36, R37
A1R38
A1R39
0698-4474
0757-0465
0757-0453
2100-3527
0683-4745
1
1
3
1
1
RESISTOR
RESISTOR
RESISTOR
RESISTOR,
RESISTOR
8.45K 1% .125W F TC=0+-100
lOOK 1% .125W F TC=0+-100
30.1K 1% .125W F TC=0+-100
VAR 5K OHM 20%
470K 5% .25W FC TC=-800/+900
24546
24546
24546
28480
01121
C4-1/8-TO-8451-F
C4-1 /8-TO-l 003- F
C4-1 /8-TO-30 12- F
2100-3527
CB4745
A1R40
A1R41
A1R42
A1R43
A1R45
0698-3557
0698-3262
2100-3526
2100-3522
0811-3420
1
1
1
2
1
RESISTOR
RESISTOR
RESISTOR,
RESISTOR,
RESISTOR
806 1% .125W F TC=0+-100
40.2 1% .125W F TC=0+-100
VAR 20K OHM 20%
VAR lOOK OHM 20%
1 .5% 7W PW TC=0+-50
16299
16299
28480
28480
07088
C4-1/8-TO-806R-F
C4-1 /8-TO-4022- F
2100-3526
2100-3522
KM-700
A1R46
Al R47
A1R48
Al R50
A1R51
0698-4020
2100-0558
2100-3525
0698-4435
0683-1025
1
1
1
1
4
RESISTOR 9.53K 1% .125W F TC=0+-100
RESISTOR-VAR 20K OHM +-10%
RESISTOR, VAR 200 OHM 20%
RESISTOR-FXD 2490 OHM +-1% .125W F TC=0+-100
RES-FXD 1K OHM 5% .25W FC TC=-400/+600
16299
73138
28480
16299
01607
C4-1/8-TO-9531-F
72PR20K
2100-3525
C4-1/8-TO-2491-F
CB1025
Al R55
A 1R100
Al Rl0l
Al Rl02
A1Rl03,104
0757-0454
0683-0335
0683-5105
0757-0277
0683-1015
1
1
1
1
2
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
33.21< OHM +-1% .125W
3.3 OHM +-5% .25W
51 OHM+-5% .25W
49.9 OHM+-l% .125W
100 OHM +-5% .25W
24546
01121
01121
24546
01121
C4-1/8-TO-3322-F
CB33G5
CB5105
C4-1 /8- TO-4992- F
CB1015
A1Rl05
A 1R106
A1Rl07
Al R109,110
A1R111
0757-0410
0683-0475
0683-2015
0683-3015
0683-2435
1
1
2
2
1
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
301 OHM +-1% .125W
4.7 OHM +-5% .25W
2000HM +-5% .25W
300 OHM +-5% .25W
24K OHM +-5% .25W
24546
01121
01121
01121
01121
C4-1/8- TO-301 R-F
CB4765
CB2015
CB3015
CB2435
A1R112
A1Rl13
A1Rl14
0683-2425
0683-1005
0683-7505
1
1
1
RESISTOR-FXD 2.4K OHM +-5% .25W
RESISTOR-FXD 10 OHM +-5% .25W
RESISTOR-FXD 75 OHM+-5% .25W
01121
01121
01121
CB2425
CB1005
CB7505
A1Rl16
Al Rl17
A1 Rl18
A1Rl19
A1 R120
0683-2015
0757-0283
0698-3161
0698-5578
0683-1035
2
2
1
1
4
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
200 OHM +-5% .25W
2000 OHM +-1% .125W
38.3K OHM +-1% .125W
4K OHM +- 5% .125W
10K OHM +-5% .25W
01121
24546
16299
24546
01121
CB2015
C4-1/8- TO-2001-F
C4-1/8- TO-3832-F
C4-1/8-TO-4001-D
CB1035
A1R121
A1 R122
Al R123
Al R124
Al R125
0683-2035
0683-3925
0757-0453
0698-4504
1810-0259
1
1
3
1
1
RESISTOR 20K OHM +-5% .25W
RESISTOR-FXD 3900 OHM +-5% .25W
RESISTOR-FXD 30.1K OHM +-1% .125W
RESISTOR-FXD 69.8K OHM +-1% .125W
RESISTOR NETWORK 300 OHM
01121
01121
24546
24546
28480
CB2035
CB3925
C4-1/8-TO-3012-F
C4-1 /8- TO-6982- F
1810-0259
Al R126
Al R132
Al R149
A1R153
0683--1035
0757-0281
0698-3499
0698-4439
4
1
1
1
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
RESISTOR-FXD
01121
24546
16299
16299
CB 1035
C4-1/8-TO-2741-F
C4-1/8- TO-4022-F
C4-1/8- TO-3241-F
A1S1-S6
A lSl-S6
03476-61901
03476-61902
1
1
SWITCH ASSEMB L Y FOR 03476-66501 ON LY
SWITCH ASSEMBLY FOR 03476-66510 ON LY
28480
28480
03476-61901
03476-61902
A1Tl00
A1T101
9100-3855
9100-3497
1
1
TRANSFORMER, DC TO DC
TRANSFORMER, POWER
28480
28480
9100-3855
9100-3497
10K OHM +-5% .25W
2740 OHM +-1% .125W
40.2K OHM +-1% .125W
3240 OHM +-1% .125W
A1Ul
1813-0091
1
PC HYBRID
28480
1813-0091
A1U2, U3
A1U4
A1U5
A1U6
1826-0139
1820-0223
1826-0317
1820-0196
2
1
1
1
IC
IC
IC,
IC
04713
27014
28480
07263
MC1458Pl
LM301AH
1826-0317
723HC
0340-0060
0340-0092
1251-4261
1205-0011
1460-1467
1460-1469
5040-8013
0370-2913
0370-2914
2110-0269
2
8
1
1
1
2
1
3
3
2
Al MECHANICAL PARTS
INSULATOR FEEDTHRU (LARGE)
INSULATOR FEEDTHRU (SMALL)
SOCKET-15 PIN DISPLAY F
HEAT SINK-(0100)
SPRING CONTACT-TOP SHIELD
CONTACT SPRING-INPUT (INPUT FUSE SPRING)
AC POWER RECP
PUSHBUTTON-PLAIN
PUSHBUTTON-MARKED
FUSE CLIP
98291
9829
28480
28480
28480
28480
28480
28480
28480
91506
FT-E-15
FT-E-12(011-6808)
1251-4261
1205-0011
1460-1467
1460-1469
5040-8013
0370-2913
0370-2914
6008-32CN
1251-3379
1251-4262
1251-4743
3
1
1
25 PIN CONNECTOR
15 PIN CONNECTOR M
RECEPTACLE-ACP WZ
28480
28480
28480
1251-3379
1251-4262
1251-4743
J1
J2
6-4
HP Part Number
MC 1458 OP AMP
LM 301A OP AMP
LINEAR
UA 723C V RG LTR
Model 3476B
Section VI
Tab I e 6 - 3. Rep I ace a b I ePa r t 5 (C 0 nt' d)
Reference
Designation
J3, J4, J5
HP Part Number
Qty
1
1
1
1
4
7120-6079
7120-3530
7120-6297
7120-6236
03476-04901
1
1
1
1
1
1
1
2
2
2
2
2
3
1
1
1
1
2
1
1
1
1
2
2
2
1460-1470
7120-5107
7120-5108
7120-5109
7120-5110
7120-5111
7120-5113
2420-0002
2360-0131
3050-0066
2190-0918
03476-24701
1460-1486
1600-0530
03476-00605
03476-40201
4114-0649
5040-8957
8120-1521
03476-90006
5040-8069
5040-8070
5040-8038
0624-0333
0624-0289
Description
MISCELLANEOUS MECHANICAL PARTS
BAIL-WIRE (TILT STAND)
LABEL-POWER INPUT STD
LABEL-POWER INPUT OPTION 001
LABEL-POWER INPUT OPTION 002
LABEL-POWER INPUT OPTION 003
LABEL-POWER INPUT OPTION 004
PLATE-I DENTI FICATION
NUT-ONSERT
1
LOWER SHELL
SCREW, 6-32 X 1 1/8 PAN
FASTENING HARDWARE
FLAT WASHER
LOCKWASHER, HELICAL
SPACER, POLYCARBONATE
SPRING, FUSE CONTACT (INPUT TERMINALS)
SHIELD, UPPER (FOIL)
SHIELD, LOWER (ALUM) WITH FOAM TAPE
PANEL, SLIDING INPUT
LENS, DISPLAY
FOOT
POWER CORD
OPERATING AND SERVICE MANUAL
UPPER SHELL
LOWER SHELL
BAIL PLUG
SCREW, 4-20 X 1/4 PAN
} PC BOARD
SCREW, 2 - 28 X 5/16 PAN
MOUNTING HARDWARE
LA BEL-I N FOR MA T ION (BELLY)
LABE L-CAUTION
LABE L-WARN I NG
LABEL-NOTE
PCB HYBRID SPACER
Mfr
Code
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
28480
Mfr Part Number
1460-1470
7120-5107
7120-5108
7120-5109
7120-5110
7120-5111
7120-5112
2420-0002
2360-0131
3050-0066
2190-0918
03476-24701
1460-1486
1600-0530
03476-00605
03476-40201
4114-0649
5040-8957
8120-1521
03476-90006
5040-8069
5040-8070
5040-8038
0624-0333
0624-0289
7120-6079
7120-3530
7120-6297
7120-6236
03476-04901
6-5
Model 3476B
Section VII
SECTION VII
TROUBLESHOOTING AND
CIRCUIT DIAGRAMS
]-1. INTRODUCTION.
7-4. Check to ensure the Multimeter is properly powered as
indicated by the decal on the side of the instrument.
7-2. This section contains preliminary troubleshooting information, printed circuit assembly exchange information,
schematic notes and reference designators, and schematic
diagrams of the Multimeter and Power Supply circuitry.
7-5. If the display illuminates and indicates near zero regardless of the input applied check the appropriate Multimeter input protection fuse.
Volts/Ohms input protection fuse:
1/32 A (250 V)
-hp- PIN 2110-0420
Littlefuse PIN 312.031
I WARNING'
These servicing instructions are for use by qualified service personnel only. To avoid electrical
shock or damage to the instrument, do not
perform any servicing other than that contained
in the operating instructions unless you are
qualified to do so.
]-3. PRELIMINARY TROUBLESHOOTING.
Amps input protection fuse:
-hp- PIN 2110-0043
1 \2 A (250 V)
Bussman AGC I - \2
Littlefuse 312.01.5
7-6. If input fuses are not at fault, proceed to disassemble
the Multimeter as follows:
a.
Disconnect the power cord.
b. Remove the input protection fuses located behind
the sliding input panel.
The hybrid circuits in the Multimeter may be
permanently damaged by static discharge from
a hand or tool when the Multimeter is disassembled. The procedures below must be followed to prevent possible damage.
1. Ground the hand while disassembling and
working on the Multimeter. Conductive wristbands (-hp- Part No. 00970-67900) are available for this purpose.
c. Place the Multimeter upside down on a grounded
work surface and remove the two screws from the bottom
cover.
d. Remove the bottom cover and place the batteries to
the side of the Multimeter.
e. Connect a jumper across the amps input protection
fuse holder and across the ohms input protection fuse
holder.
2. Attach the Multimeter COM terminal to
earth ground. Touch all tools to earth ground
to remove static charges before using them on
the Multimeter.
3. Use a soldering iron with a grounded tip.
1f it is necessary to handle the printed circuit
assembly. hold it by the power transformer and
the front panel switch pushbuttons to avoid
contamination of the assembly.
Wear clean cotton gloves when working on the
circuit board. Contamination or fingerprints
will reduce the accuracy of the Multimeter. Use
low flux content solder (-hp- Part No.
8090-0512) when replacing componenets. Do
not permit traces of flux to form on the circuit
board. Observe precautions against static discharge. Do not use flux remover.
I
WARNING'
Disconnect the AC line cord befure checking or
replacing the A C line fuse.
7-1
Section VII
Model 3476B
7-7. If the Multimeter display does not illuminate in ac or
battery operation:
7·15. Remove the Al printed circuit board assembly using
the following procedure:
a. Check the ac line fuse (F I).
b. Check the battery fuse (FIOO).
7-8. Connect the Multimeter TP ~ to earth ground.
7-9. Connect the appropriate AC line voltage as specified
by the option decal.
WARNING
I
]·10. SCHEMATIC DIAGRAMS.
7-1 I. Figure 7-1 and 7-2 are schematic diagrams of the
Multimeter and its power supply.
CIRCUIT
ASSEMBLY
b. Disconnect positive and negative battery terminals.
d. Remove 4 PC board mounting screws - one on each
side of the switch assembly and the other two in each
corner at the back of the PC board.
e. Pull J4 and J5 free from the top shell.
f. Using transformer Tl 0 I as a handle, lift the PC
assembly out of the top shell back first until it is above the
onsert nuts. The Al Assembly will now slide back and clear
of the top shell.
EXCHANGE.
7-13. To provide maximum instrument performance for
minimum cost, the Multimeter is designed around a NMOS
Hybrid Integrated Circuit (UI). This Hybrid and its associated discrete elctronic circuitry are repairable only at the
Hewlett-Packard Manufacturing Division using special
equipment. An exchange program has been established to
permit field repair of the Muitimeter by replacing the
entire Al printed circuit assembly with a factory rebuilt
assembly (-hp- PIN 03476-69510). This assembly is warranted to be fully operational and meet all instrument
specifications. For ordering details, contact the HewlettPackard Sales and Service Office nearest you.
7-2
a. Disconnect power cord, remove input fuses and
bottom shell. Leave the aluminum bottom shield fastened
to the P.c. board.
c. Remove two polycarbonate spacers.
To avoid electrical shock, do not touch the AC
line fuse or the line voltage jumpers when the
instrument is plugged into A C power.
]·12. PRINTED
]·14. Printed Circuit Board Removal.
Handle the P. C assembly by the transformer
(TI0l) and the pushbutton switches.
To avoid possible damage to the P. C assembly,
do not use plastic or bubble pack as a packing
material. Use non-static charge producing
materials such as conductive foam (-hp- Part
No. 9220-1776).
Model 34768
Section VII
REFERENCE DESIGNATIONS
ASSEMBLY
ASSEMBLY
PART NUMBER
REFERENCE
ASSEMBLY
DESIGNATION
NAME
(INCLUDES A2AI SUBASSEMBLY)
r---"-----., ~ ~
JACK XA2 IS MOUNTeD ON
CHASSIS OR ANOTHER ASSEMBLY""
A2
~2
PI IS NOT MOUNTED
ON A2 ASSEMBLY
(COMPLeTE DESIGNATOR IS PI)
:
~
POWER SUPPLY
R3
_
IOOXXX-66501)
,-v6~U¥Jt '1st'BYf3'[.no~~81E6::;Pth~Ro'lsf;{'N~i-oR
I
TEST VOLTAGE~
I
I
I
I
IS A2P/}
QI
PI
+2.92V
I
"\
SUBASSEMBLY OF A2
,-v(COMPLETe DESIGNATOR IS A2AI)
I~NUMBER
4
INDICATeS
PIN OF XA2 AND PI
XA2
2
DENOTES StEMATIC
ON WH ICH CONNECTION
IS MADE
AI
[PHOTO:CHOPPER OSC-I
6
I
2,
MALE STANDrt,;;
PIN
PIN CONNECTOR
CONNECTOR ON
A WHT/RED WIRE
MAY OR MAy
NOT BE NUMBERED
/.-¢fI-~
COMPLETe
DESIGNATOR
~(j.....--'
~
IS A2AIRI
f'I
)
~FEMALE
R2
I,f;
I
I
)f---73~
'y"vCOMPLeTE OESIGNATOR IS A2R4
R4
: I
~ E-(:":'~'_-""":(
--'< ~
I
18
~
I~
WIRE COLOR: COLOR COD2THE SAME
AS THE RESISTOR COLOR COOE. FIRST
EYeLET OR STANDNUMBER INDICATeS BASE COLOR SECONO I OFF TeRMINAL, MAY OR
NUMBER INDENTIFIES WIDER STRIP, AND I MAY NOT BE NUMBERED
THE THIRD INDICATES THE NARROWER
/
~
I>Y
STRIP. (~DENOTES WHTlRED/YEL WIRE)
PARTIAL REFERENCE DESIGNATIONS ARE SHOWN: PREFIX WITH ASSEMBLY OR
DESIGNATION(S) OR BOTH FOR COMPLETE DESIGNATION
SUBASSEMBLY
STD 8-2192
r--------GENERAL SCHEMATIC NOTES
6. . , .
2. COMPONENT VALUES ARE SHOWN AS FOLLOWS UN·
LESS OTHERWISE NOTED.
RESISTANCE IN OHMS
CAPACITANCE IN MICROFARADS
INDUCTANCE IN MILLIHENRYS
5.
1. PARTIAL nEFH,ENCE OESI(;NATIONS AnE SHOWN.
PREFI X WITH ASSEMBLY OH SUflASSEMI3L Y DESIG·
NATIONlS) OR BOTH FOR COMPLETE DESIGNATION.
3.
J.-
DENOTES EARTH GROUND.
USED FOR TERMINALS WITH NO LESS THAN A
NO. 18 GAUGE WIRE CONNECTED BETWEEN
TERMINAL AND EARTH GROUND TERMINAL OR
AC POWER RECEPTACLE.
DENOTES ASSEMBL Y.
*
7.
DENOTES SCREWDRIVER ADJUST.
AVERAGE VALUE SHOWN, OPTIMUM VALUE SE·
LECTED AT FACTORY. niE VALUE OF THESE
COMPONENTS MAY VARY FROM ONE INSTRU·
MENT TO ANOTHER. THE METHOD OF SELECTING
THESE COMPONENTS IS DESCRIBED IN SECTION V
OF THIS MANUAL.
DENOTES GROUND ON PRINTED CIRCUIT
ASSEMBLY. (PERMANENTLY CONNECTED TO
FRAME GROUND).
8
4.
DC VOLTAGE LEVELS WERE MEASURED WITH
RESPECT TO CIRCUIT GROUND USING A DVM WITH
10 MEGOHM INPUT 1:l.1PEDANCE. THE VOLTAGE
LEVELS SHOWN ARE NOMINAL AND fl.1AY VARY
FROM ONE INSTRUMENT TO ANOTHER DUE TO
CHANGE IN TRANSISTOR CHARACTERISTICS. A
VAR·'ATION OF 1 10% SHOULD BE ALLOWED.
9.
~DENOTES WIRE COLOn: COLon CODE SAME AS
RESISTOR COLOR CODE. FIRST NUMBER IDENTIFIES BASE COLOR. SECOND NUMBER IDENTIFIES WIDER STRIP. THIRD NUMBER IDENTIFIES
NARRQWER STRIP. (e.g. ~ =WHITE. RED,
YELLOW.)
8.
~UI PIN CONNECTOR.
7-3/7-4
ANGOLA
Teleclfa
E~resa TeCOlCade
EqUlpamentos
Eleclncos, SARl
R. Barbosa Rodrigues,
41-loOT 0
Cal~a Poslal, 6487
Luanda
Tel 35515/6
ARGENTINA
Hewlen·Packard Argeollna SA
Santa Fe 2035, Marllnez
6140 BuenOI Alre.
Tel 792-1239, 798·6086
Telel 122443 AR C1GY
Biotron S.ACJy M
AVda_ Paseo Caton 221
"'"BuenOI Airel
91399
Tel 30·48461185118384
34-935610460/4551
Telex (33) 17595 BIO AR
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TERR_
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lid
12' Wollongong Slreel
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Tel 804244
Telel 62650
NEW SOUTH WALES
Hewlell-Packard Austraha Ply
lid
31 Bndge Slreel
Pymbl., 2073
Tel 4496566
Te\e_ 21561
QUEENSLAND
Hewlell Packard Australia Ply
lid
5lhFIool
Teachers UntOn BlJlk)ng
495·499 Boundary SIIeet
Spring Hili, 4000
Tel 2291544
SOUTH AUSTRALIA
Hewlell-Packard Austraha Ply,
lid
153 Greenhill Road
Parklide, 5063
Tel 2725911
Telex 82536
VICTORIA
Hewlell·Packard AuslrallS Ply
lid
31-41 Joseph Slteel
BI.ckburn. 3130
Tel 89-6351
Te\e_ 31024 MRB
WESTERN AUSTRALIA
Hewlell-Packard Australia: Ply
lid
141 String HIghway
Hedland., 6009
Tel 3865455
Tele~ 93859
AUSTRIA
Hewlen·Packard Gesmb H.
WehhSlrasse 29
POBox 7
A-1205 Vienna
Tel,35·16·21·0
Telex 13582/135066
HewleU·Packard Gesm.b H
Wehltstrasse.29
A·1205 Wlen
Tel 35·16-21
Telex 135066
BAHRAIN
UedlcalOnly
Waet Pharmacy
PO Box 648
Bahrain
Tel 54886.56123
Telel 8550 WAEL GJ
AI Hamldfya Trading and
Conl1aclng
PO Box 20074
Manamll
Tel 259978, 259958
Telex 8895 KALDtA GJ
BRAZIL
Hewlell-Packard do 8ras~
(e,e ltda.
Alameda RIQ NeglO, 750
Alphaville
06400 Baruerl SP
Tel 429·3222
Hewlel1·Packard do Brasil
l.e.C_Uda,
Rua Padre Chagas, 32
9OQ(X)·Porto Alegr.·RS
Tel: 22·2998,22-5621
Hewlell·Packard do 81aSlI
l.e.C lIda
ltv EpllaClO Pessoa, 4664
22471·Rlo de Janelro·RJ
Tel' 286-0237
Telex 021-21905 tPBR-BR
CANADA
ALBERTA
Hewtell-Packard (Canada) lid
11620A - 168th Streel
Edmonton T5M 3T9
Tel (403) 452-3670
TWX 610·831-2431
Hewlel1-Packard {Canada) Ud.
210, 7t!20 Fisher SI. S.E
Calgary T2H 2H8
:rei: (403) 253·2713
TWX 610·821·6141
BRITISH COLUMBIA
Hewlell·Packard (Canada) lid
10691 SheUbudge Way
Richmond V6X 2W7
Tel (604)270·2277
TWX 610·925·5059
MANITOBA
Hewlen-Packard (Canada) Ltd
380·550 CenIlJ"y SI
St. Jame.,
WlMIpeg R3H OYl
Tet (204) 786·6701
TWX 610-671·3531
NOVA SCOTIA
Hewlell·Packard (Canada) ltd
PO BOl931
800 WindmIll Road
Dartmouth B38 lL 1
Tel. (902) 469·7820
TWX 610·271·4482
ONTARIO
Hewlell·PaCkard (Canada) ltd
1020 Moroson Or
Ottawa K2H 8K7
Tel (613) 820-6483
TWX 610-563·1636
Hewlell-Packard (Canadailld
6877 Goreway Dove
Mlnl..auga L4V lM8
Tet (416) 678·9430
TWX 610-492-4246
Hewlel1-Packard (Canada) LId
552 Newbold Streel
London N6E 2S5
Tel: (519) 686-9181
TWX 610·352-1201
QUEBEC
Hewlell·Packard (Canada) lid.
275 Hymus Blvd
Polnle Claire H9R lG7
Tel (514) 697·4232
TWX: 610·422·3022
FOR CANADIAN
AREAS NOT
LISTED;
Conlacl HewJell-Packard (Can·
ada) lid 111 MlSSlSsauga.
CHILE
Jorge CalcaQfl Y CIa Uda
Ath.a'o BlrllIe 065
CaSlla 16475
Co/reo 9, Sanllago
Tel 220222
Telel JCAlCAGNI
COSTA RICA
CIff'lIIfica CoslarrlCef'lSe S A
Avelllda 2, Gale 5
San Pea-o de MonIes de Dca
Apartado 10159
San Jod
Tet 24-38-20, 24-08-19
Telel 2367 GAlGlJ1 CR
BElGIUM
Hew\ell-Packard Benelul
S.AINV
Avenue du Col·Vert, 1,
IGroenkraaglaan)
B-1170 Brun.l.
Tet (02) 660 50 50
Telex 23-494 palOtlen bru
COLOMBIA
JnslrumenlaCloo
Henl"lk A Langebaek & Klfr
SA
Garrera 7 No 48·75
Aparlado Mreo 6287
Bogota, 10 E
Tel 269·8877
Telel 44400
Inslrumenlacl6n
H A Langebaek & Klet SA
Carrera 63 No 49-A·31
Apartado 54098
Medellin
Tet 304475
BANGLADESH
The Genera! ElectriC Co of
Bangladesh lid
Magnet House 72
OtIkusl\a Commerclill Area
Motllhell, Dacca 2
Tel 252415, 252419
Telex 734
CYPRUS
KyprOOICs
19 GregorlOS Xeoopoulos
Slreer
PO Box 1152
Nicosia
Tel 45628/29
Telex_ 3018
CZECHOSLOVAKIA
Hewlell·Packard
Obchodnl zaslupltelslVl v CSSR
Plsemnystyk
Posl schranka 27
CS 11801 Praha 011
CSSR
VyvOfOva a PrOVOIl'll Zakladna
VyzklfTWlych Ustavu v
Ilecho""'"
CSSR·25097 Bect!Ovlce u
Prahy
Tet 899341
Telel: 12133
InsllMe 01 MedICal BI()l'\lCS
Vyskumny Ustav Lekarskej
Bloniky
Jedlova6
CS·88346 Bratl.lavaKramare
Tel: 44·551
Telel: 93229
DENMARK
Hewlell-Packard AJS
OataveJ 52
OK·3460 Blrkerod
Tet (02)8166 40
Telel 37409 hpas dk
Hewlen-Packard AJS
Navervet 1
OK-8600 Silkeborg
Tet (06)82 71 66
TPIe_ 37409 hpas dk
ECUADOR
CYEOE CIa lids
P 0 Bol 6423 CCI
Av Hoy Alfaro 1749
Quito
Tel 450·975, 243-052
Telex: 2548 CYEOE EO
Medica! Only
Hospllalar SA.
Casilla 3590
Robles 625
Quito
Tel 545-250
EGYPT
lEA
International Engneellng
AssOCt8les
24 Hussell1 Hegall Slreel
KaSf-et·Alf'lI
Cairo
Tet 23829
Telel 93830
SAMiTRO
Sam Amm Trading Office
18 Abdel Azu Gawlsh
Abdlne-Cairo
Tel' 24932
El SALVADOR
IPESA
Bulevar de los Heroes 11-48
Edlliclo Sarah 1148
San Salvador
Tel· 252787
ETHIOPIA
Abdella AbduImalik
PO Bo12635
Addl. Ababa
Tel 119340
FINLAND
Hew1eIl-Packard Oy
RevontlJetlbe.7
SF-021()() Eapoo 10
Tet (90) 455 0211
Telex 121563 hewpa sf
FRANCE
Hewlett-Packard France
Zone d'aCllvlles de
Cwlaboeul
Avenue des Troplques
BOlle Poslale 6
91401 Or88y·C~deJ(
Tel (1) 907 78 25
TWX 600048F
Hewlell-Packard France
Chemlf'l des MOOIIies
BP 162
69t3O Ecully
Tel (78)338125
TWX 310617F
Hew1eIl·Packard France
20, Chemll1 de La Upere
31081 Toulou••
Le MlraU-Cede_
Tet (61)4011 12
GUAM
Hewlel1·Packard France
le Ligwes
B.P 300
SALES OFFICES
GJ
[h~
Arranged alphabetically by country
Guam MedICal Supply. Inc
SuIte C. Alfpol'l Plaza
PO. Box 8947
Tamuning 96911
Tel 646-4513
Place Ramee de V~lenetJve
13100 Alx-en-Provence
Tel: (42) 59 41 02
TWX. 41Q770F
Hewlett-Packard France
2, Allee de Ia BOUfgonelie
35100 Renne.
Tel: (99) 514244
TWX 740912F
Hewlell-Packard France
18. rue 11l Canal de Ia Marne
67300 Schllllghelm
Tet_ (88)83 08 10
TWX 890141F
Hewletl·Packard France
InvnelIbIe peneenlre
rue van Gogh
59650 Villeneuve O'Ascq
Tel (20)914125
TWX 160124F
Hewlen-Packard France
Ballmenl Ampere
Rue de la Commune de Parts
93153 Le Blanc Me.nll·
CMex
Tel (01)9318850
Telex 211032F
Hewlell-Packard France
Av do Pdl KeMe<1y
33700 Merignac
Tet (56) 97 0181
HewleU·Packard France
InvneubIeLorrane
BoUevard de France
91035 Evry·tedex
Tet 0779660
Telex, 692315F
Hewlell-Packard France
23 Rue Lolhare
57000 Metz
Tel (87) 65 53 50
GERMAN FEDERAL
REPUBLIC
Hewlell-Packard GmbH
VertriebsIenlrale Franklurl
Berner Strasse 117
Postlach 560140
0·6000 Frankfurt 56
Tel (06011)50041
Telex 04 13249 hptlm d
Hewlell·Packard GmbH
Technlsd1es Btko Bt)bIjllQefl
liefrenbefger Sllasse 110
0·7030 BOblingen,
Wurllemberg
Tel (070311667-1
Telel 07265739 bbn
Hewlell-Packard GmbH
Technlscnes BUro OOsseldorl
Emanuet·Leutze·Str 1
(Seeslern)
0·4000 DU•••ldorf
Tel (0211) 5971-1
Telex 085/86 533 hpdd d
Hewlen·Packard GmbH
TechntsChes Buro HambUlg
Kapsladlnng 5
0·2000 Hamburg 60
Tel (040) 63804-1
Telex 2163032 hphh d
Hewlell·Packard GmbH
TechrHsches BUro Hannover
Am Grossmarkl 6
0-3000 Hannover 91
TeI/0511)466001
TeIe_ 0923259
Hewlell·Packard GmbH
Technrsches Blio NUrrt>erg
Nelmeyefstrasse 90
0-8500 NUrnberg
Tel (0911) 52 20 83
Telel 0623 86P
HewleU·Packard GmbH
TedlnIsches BUro MlXlchen
ESCheostrasse 5
0·8021 Taufkirchen
Tel (089)6117·1
Tele~ 0524985
Hewlell-Packard GmbH
Techmsches BUro Berlin
Kallhslrasse 2·4
0-1000 Barlln 30
Tel (030) 24 90 86
Teie_: 018 3405 hpbln d
GREECE
Kostas Kalayanms
8 OITUIOU Streel
Athens 133
Tel 32 30 303132/37 731
Telex 215962 RKAA GR
GUATEMALA
IPESA
AveOida Reforma 3·48
Zona 9
Guatemala City
Tet 316627.314786,
66471-5, exl 9
Telel 4192 Teletro Gu
HONG KONG
Hewlell-Packard Hong Kong
lid
11th Floor. Fw seas Bldg
212 Nalhan Ad
Kowloon
Tel 3·69744615 ~nes)
Telel 36678 HX
Medtea1lAnalYl1C31 Only
Schrmdl & Co (Hong Kong)
lid
Wing On Cenlre, 281h Floor
Connaughl Road, C
Hong Kong
Tel: 5·455644
Telex 74766 SCHMX HX
INDIA
Blue Slar lid.
Sahas
414/2 '(II" Savarkar Marg
Prabhadevl
Bombay 400 025
Tel: 45 78 87
Telel 011·4093
Blle Star ltd
Band Box House
Prabhadevr
Bombay 400 025
Tel 457301
Telex 011-3751
Blue SIal lid.
Bhavdeep
StadMJm Road
Ahmedabad 380 014
Tel: 43922
Telex:012·23c1
Blue Slar lid
7 Hare Slreel
Calcutta 700 001
Tel 23·0131
Telel 021-7655
Blle Slar lid
Bhandan House
91 Netvu Place
New Oelhi 110024
Tet 682547
Telel 031·2463
BEReA Indonesia P T
P D. Box 174/Sby
23 Jill Jimel1Q
Surabaya
Tel 42027
IRELAND
Hewle1!·PackardUd
Keslrel House
Clanwilliam Place
lower Mounl Streel
Dublin 2, Eire
Hewlell-Packard lid
2C Avongberg Ind Esl
Long Mile Road
Dublin 12
Tet 5143221514224
Telex 30439
Medical Only
Cardiac servICes (Ireland) lid
Kimofe Road
Arlane
Dublin 5. Elfe
Tel 101) 315820
Medical Only
Cardiac ServICes CO
9SA Fmaghy Rd Soulh
Belfast 8T 10 OBY
GB-Norlhern Ireland
Tel: {0232) 625566
Telel 747626
ISRAEL
Electrrocs Ertglneermg Dlv
of MOIOfoia Israel lid
16. Kremenelskt Street
POBox 25016
Tel-Aviv
Tet' 38973
Telex 33569.34164
ITALY
HewIeU·Pack.ard lIakana SpA
Viii G Ot VillorlO, 9
20063 Cernu.co Sui
Navlglio (MI)
Tet (2) 903691
Telel 334632 HEWPACKlT
Hewleu-Packard l1allana S pA
Via Turazza. 14
35100 Padova
Tel (49) 664888
Telex 430315 HEWPACKI
Hewlell-Packard Itahana SpA
Via G Armeilim 10
1-00143 Roma
Tel (06) 54 69 61
Telel 610514
Hewlet1·Packard 11aliana SpA
Corso GIOvam Lanza 94
1-10133 Torino
Tel (Olt) 659308
Telex 221079
Blue Sla'ltd.
TC 7/603 'Poornrna'
Marulhankuzhf
Trlvandrum 695 013
Tet 65799
Telex 0884-259
Blue Star lid
\ 1 Magaralh Road
BangaJore 560 025
Tel. 55668
Telex' 0845·430
81ue Slar lid
Meeakshl Mandlram
XXXXVl1379-2 Mahatma
Gandhi Rd.
Cochln 682 016
Tel 32069
Tetel 085·514
Blue Star lid
1-\-11711 SarOjlOl Devl Road
Secund.rabad 500 033
Tet 70126
Telex 0155·459
Blue Slar lid.
133 Kodambakkam HIgh Road
Madra. 600 034
Tel. 820S7
Telex' 041-379
ICelAND
Medical Ol'lly
Elding Trading Company Inc,
Hatnarnvoll - Tryggvagmu
P.O Box 895
IS-Reykjavik
Tell 5820/16303
INDONESIA
BEReA InClOneSla P T
PO Bol496/Jkl
.lin AbdU Muis 62
Jakarta
Tel 349255.349886
Telel 46748 BERSL IA
Hewlell-Packard hahana SpA
Viii Pflnc:lpe NICola 43 GIC
1-95126 Catania
Tel (095) 37 05 04
Telex 970291
HewleU-Packa,d Itall8na SpA
Via Nuova san Rocco A
Capadimonle. 62A
80131 Napoli
Tel (081) 710698
Hewlel1-Packard 11aliana SpA
Via Marlin lumer King. 38/111
1·40132 Bologna
Tel (05 t) 402394
Telex 511630
JAPAN
Yakogawa-Hewlell·Packard
lid
29-21. Takaldo·Htgashi
3·ChOme
SuQInamt·ku. Tokyo 168
Tei 03·331·6111
Telel 232-2024 YHP-TOkyo
YOkogawa-Hewlell·Packard
lid
Chuo Bldg.. 4th Floor
4·20. NlShroakapma 5·chome
Yodogawa-ku, Osaka-shl
Osaka, 532
Tel 06-304·6021
Telex 523·3624
Yokogawa-Hewlell·Packard
lid
SuOilomo Selmel Na9aya Bldg,
11-2 Shlffiosasajlma-cho.
Nakamura-ku, Nagoya, 450
Tel 052571·5171
YOkogawa·HewIeU·Packard
lid
Tal"llQ8wa8LIldlOQ
2-24 I Twuya·cho
Kanagawa-ku
Yokohama, 221
Tet 045-312-1252
Telex 382·3204 YI-f' YQK
Yokogawa·Hewlell-Packard
ltd
MilO MitSUI BuildlOQ
105. J.chome, San·no-maru
Milo, Ibaragl 31{1
Tel 0292·25·7470
YOkogawa·Hewlell·Packard
lid
Inoue BUdding
1348·3, Asahl·cho, \·chome
Allugl, Kanagawa 243
Tel 0462·24·0452
Yokogawa·Hewiell-Packard
ltd
KlI'l'Iagaya Asalll
Hac".... llUklog
4th Floof
3-4. TSUkli>a
Kumagaya, Saltama 360
Tet 0485-24-6563
JORDAN
Mouasher COUSInS Co
POBox 1387
Amman
Tel 24907/39907
Telel SABCO JD 1456
KENYA
ADeOM Ud" Inc
PO Box 30070
Na/robl
Tel 331955
Telex: 22639
Medical Only
Inlernallonal AeradlO IE,A_) ltd
PO BOI 19012
Nall"obI Atporl
Nairobi
Tet 336055/56
Telex 22201122301
MedocalQnly
Inlerna\JOnal Aeradlo (EA) lid
PO BOl95221
Mombasa
KOREA
SamSlM'lg Ele<;tronlCS Co lid
4759 Shtngd·6-Dong
Yeong Oeung POU
Seoul
Tel 833·4122,4121
Telex: SAMSAN 27364
KUWAIT
AI.Khald'ya Trading &
Conlrachng
PO. Bol 830·Salal
Kuwait
Tel 424910/41 1726
Telex 2481 Areeg kl
LUXEMBURG
Hewlell-Packard 8eneUz
S_AINV
Aveooe do CoI·Verl, 1
(Groer*raaglaan)
B·1170 Brunell
TeI- 102)660 5050
Telex' 23 494
MALAYSIA
Hewlell-Packard Sales
(MalaySia) Sdn BM
Sulle 2,2112.22
Bangunan Angkasa Raya
Jalan Ampang
Kuala lumpur
Tet· 483680, 485653
P/Otel Engltleenng
PO Box 1917
Lol 259, Salak Road
Kuchlng, Serawak
Tel 53544
MEXICO
Hewlell·Packard MellCal'la
SA de CV
Av Perl1~f1Co SIs No 650 1
Tepepan, XodlrnIIco
Mexico 23. OJ
Tet 905-676·4600
Telel 017·74·507
Hewlell·Packaro MellCana
SA. de CV
RIO VOlga #600
Col Del Valle
Monterrey, NL
Tel 78·32·10
MOROCCO
Dolbeau
81 rue Karatchl
Cal8btanca
Tel 304182
Telex 23051122B22
Ge'",
2. rued'Agadir
BoI!e Poslal 156
Casablanca
Tel 27209315
Telel 23739
MOZAMBIQUE
A.N Goncalves. lid
162, 1° ApI 14 Av 0 lUIs
Calxa Pastal107
Maputo
Tel: 27091, 27114
Tele~: 6-203 NEGON Mo
NETHERLANDS
Hewlett-Packard Benelux N V
Van Heuven Goedharllaan 121
POBox 667
1181KK Amlt.lv••n
Tel (20) 47 20 21
Telex 13216
NEW ZEALAND
Hewletl-Packard (N Z,IUd
4·12 Crock.shank Slreet
Kibmle. Welinglon 3
P_O Box 9443
Cou'lney Place
Wellington
Tel 877·199
Hewlett-PaCkard (NZ) lid
P_D B0126-189
169 Manukau Road
Epsom, Auckland
Tel 687·159
AnalyllcaVMedlcalOnly
Norlhrop lnslruments &
Syslems lid.,
SlUfdee House
85-87 Ghuznee Slreet
P,D Box 2406
Wellington
Tet 850·091
TeIe_ NZ 31291
Northrup Inslrunenls &
Syslems lid
Eden House, 44 Khybef Pass
Rd
POBox 9682. Newmarket
Auckland 1
Tel 794·091
Northr~ Inslflmenls &
Syslemslld
Terrace House, 4 Oxford
Terrace
P 0_ Box 8388
Chrilichurch
Tel 64-165
NIGERIA
The EleclrOniCS
tnSlfl,menlahOllslld
N6Bn70 Dyo Road
OIuseun House
PMB 5402
Ibadan
Tet 461577
Te'el 31231 TEL NG
The Electroocs
lrlslfLl1lel'ltauons ltd
144 Agege Motor Road. Mushr1
PO Bo_481
Mushln. lagos
NORWAY
Hewlel1-Packald Norge AlS
Oslendalen 18
PO Box 34
1345 O.tera..
Tel (02) 1711 80
Telex 16621 hpnas n
Hewlell·Packafd Norge AJS
Nygaardsgalen 114
PO Bo~ 4210
5013 Nygaardsgaten,
Bergen
Tel: (05)2197 33
PANAMA
E!eClrooco Balboa, SA
Aparalado 4929
Panama 5
CaIe SaIT'lJel LeWIS
EdrllClO ~AIIa.~ No 2
Cludad de Panama
Tet 64·2700
Telel 3483103 o..t.ndu,
Canal Zone
PERU
Compallia Eleclro ~dlca SA
Los Flamencos 145
San ISidro Casilia 1030
Lima 1
Tel 41-4325
Telex: Pub Booth 25424
SISIORO
PAKISTAN
Mushko & Company lid
Oosman Chambers
Ab<:!lJlah Haroon Road
Karachl·3
Tel 511027 512927
Telel' 2894
SALES OFFICES
Arranged alphabetically by country (cont.)
Mushko & Company. LId.
10. Bazar Rd.
Sector G·6/4
Islamabad
Tel: 28264
PHILIPPINES
The Online Advanced Systems
Corporallon
RIco House
Amorsolo cor Herrera SIr
LegaspI Village. Makall
PO. Box 1510
Melro Manila
Tel- 85·35·81, 85·34·91.
85·32·21
Telex: 3274 ONLINE
RHODESIA
F'eld Technical Sales
45 Kelvin Road North
P.O. Box 3458
Sansbury
Tel 705231 (Stines)
Telex RH 4122
POLAND
BIlKO Informacji TechniczneJ
Hewlen·Packard
UI Slawkl 2, 6P
PLOO-950 Warsz.w8
Tel: 39 59 62, 39 51 87
Telex 812453
PORTUGAL
TeleClra·Empresa Tecmca de
EQUlparnentos E~c'ncos
S.ar.!.
Rua Rodngo da Fonseca 103
P.O. Box 2531
P-Ll.bon 1
Tel" (19) 68 60 72
Telex. 12598
Medical Only
MUfl(Mter
InlercambloMundiaJde
ComerCIO $.aJ,1
P.O. Box 2761
AvenlOll Antonio AugUS10
de Aguiar 138
P·lI.bon
Tel: (19) 53 2131/7
Telex: 16691 munler p
PUERTO RICO
HewleU-Packard InrerAmericas
Puerlo RICo 8ranch Office
Calle 272,
#203 Urb. Coonlry Club
Carolina 00630
Tel: (809) 762-7255
Telex 3450514
QATAR
Nasser Trading & Conlraclmg
P.O. 80x 1563
Doha
Tel: 22170
Telex: 4439 NASSER
ROMANIA
Hewlen·Packard
Reprezenlanta
Bd,n. Balcescu 16
Bueurestl
Tel: 158023/138885
Telex' 10440
SAUDI ARABIA
Modern EleclronlC
ESlabHshmenl (Head OWce)
P.O, Box 1228, Baghdadiah
Streel
Jeddah
Tel: 27 798
Telex: 40035
Cable: ELECTA JEDDAH
Modern EleclronlC
ESlablishmenl (8ranch)
P.O. Box 2728
Riyadh
Tel: 62596/66232
Telex: 202049
Modern Electronic
Eslablishment (Branchl
P,O. Box 193
AI·Khobar
Tel: 44678-44813
Telex: 670136
Cable: ELECTA AL·KHOBAR
SINGAPORE
HewleU-Packard Singapore
(Pte.) lid.
6th Floor, Inchcape House
450·452 Alexandra Road
P,O. Box 58
Alexandra Pas' Office
Singapore 91 IS
Ter' 631788
Telex: HPSG RS 21486
SOUTH AFRICA
Hewlelt·Packard Soulh A1f1ca
(prY,l.l1d
Pnvale Bag Wendywood,
Sandlon, Transvaal, 2144
Hewlen·Packard Cenlre
Daphne Slree!. Wendywood,
Sandton, 2144
Tel' 802·5111/25
Telex 8-4782
SYRIA
General ElectroniC Inc
Nun Basha·Ahnat Ebn Kays
Sireel
P,O 80x 5781
Damascus
Tel' 33 24 87
Telex 112151TIKAl
Cable: ELECTROBOR
DAMASCUS
Hewlelt-Packard South Afnca
(Ply,), lid
P,O Box 120
Howald Place.
Cape Province. 7450
Pine Park Cenlre. F"Qresl Drive.
Plnelands,
Cape Province. 7405
Tel: 53·7955 thru 9
Telex: 57-0006
Medical only
Sawah & Co.
Place Azme
B.P.2308
DamaaeuB
Tel: 16367·19697·14268
Telex' 11304 SATACO SY
Cable' SAWAH. DAMASCUS
SPAIN
Hewlell·Packard Espanola.
SA
Calle Jerez 3
E·Madrld 16
Tel: (1) 458 26 00 (10 lines)
Telex: 23515 hpe
Hewlell·Packard Espanola S.A.
ColOnia MlraSlerra
Edif!Clo Juban
c/o Cosla Blava. 13
Madrid 34
Hewlell·Packard Espanola,
S.A
Milanesado 21·23
E·Barcelona 17
Tel: (3) 203 6200 (5 lines)
Telex 52603 hpbe e
Hewlelt·Packard Espanola.
SA
Av Ram6n y Calal. 1
Ediliclo Sevilla. planla 9°
E·Sevltla 5
Tel: 64 44 54/58
Hewlell-Packard EspanOla SA
Edilicio AlbIa II P B
E-Bllbao 1
Tel' 23 83 06/23 82 06
Hewlell·Packard Espanola SA
Clfiamon Gordillo 1
(Enllo.)
E,Valencla 10
Tel: 96·361.13.54/361,13,58
SRI LANKA
Melropolitan Agencies lid
209/9 Unlon Place
Colombo 2
Tel: 35947
Telex: 1377METROLTO CE
SUDAN
Radlson Trade
PO Box 921
Khartoum
Tel: 44048
Telex 375
SURINAM
$urlel RadiO Holland N.V
Grole Hotstr 3·5
POBox 155
Paramaribo
Tel 72118.77880
SWEDEN
Hewlel1·Packard $verige AB
Enlghetsv~gen 3. Fack
5-161 Bromma 20
Tel. (08) 730 05 50
Telex' 10721
Cable: MEASUREMENTS
Slockholm
Hewletl·Packard Svenge AB
Frtltailsgatan 30
S-42132Vbtra
Frl:Uunda
Tel' (031) 49 09 50
Telex. 10721 via Bromma
office
SWITZERLAND
Hewlen-Packald (Schwelzl AG
ZlJfcherstrasse 20
P.O. Box 307
CH·8952 SchlierenZUrich
Tel' (O1) 7305240
Tele~: 53933 hpag ch
Cable: HPAG CH
Hewlen·Packard (Schweiz) AG
Chateau Bloc 19
CH·1219 Le LlgnonGeneva
Tel' (022) 96 03 22
Telex: 27333 hpag ch
Cable: HEWPACKAG Geneva
Swelman Hilal EI Mlawi
PO 80x 2528
Mamoun Bilar Suee!. 56-58
Damascus
TeLlt4663
Telex: 11270
Cable: HILAL DAMASCUS
TAIWAN
Hewlen·Packard Far Easll1d.
Talwan Branch
Bank Tower. 5lh Floor
205 Tun Hau Nor1h Road
Taipei
Tel (02l751·Q404 (15 lines)
Hewlen·Packard Far Eas111d.
Taiwan Branch
68·2, Chung Cheng 3rd. Road
Kaohsiung
Tel' (07) 242318-Kaohsiung
AnalyllcalOnly
San Kwang Instrumenls Co..
LId.
20 Yung Sui Road
Taipei
Tel: 3615446·9 (4 lines)
Telex: 22894 SANKWANG
Emlrac Ltd. (BranCh Office)
P.O. Box 2711
Abu Dhabi
Tel: 331370/1
3939 Lankershlm Boulevard
North Hollywood 91604
Tel. (213) 877·1282
TWX: 910·499·2671
UNITED KINGDOM
HewleU·Packard LId.
King Sireet Lane
Wlnnersh. Wokmgham
Berkshire RG11 5AR
GB·England
Tel: (0734) 784774
Telex: 84 71 78/9
3200 HillView Av
Palo Alto, CA 94304
Tel: (408) 988·7000
Hewlelt·Packard Ltd.
Fourier House,
257·263 High Slree1
London Colney
St. Albans, Herts
GB-England
Tel: (0727)24400
Telex 1·8952716
Hewlen·Packard lid.
Tralalgar House
Navlgallon Road
Altrlncham
Cheshire WA14 lNU
GB·England
Tel' (061) 928 6422
Tele_: 668068
Hewlell-Packard Ltd.
Lygon Coor1
Hereward Rise
Dudley Road
Halesowen,
Wesl Midlands. B62 8SD
GB·England
Tel: (021) 501 1221
Telex: 339105
Hewlen-Packard ltd.
Wedge House
799, London Road
Thornton Heath
Surrey, CR4 6XL
GB-England
Tel: (01) 684·0103/8
Telex: 946825
TANZANIA
Medical Only
InternalionalAeradio(E.A.).Ltd
P.O. 80x 861
Dar es Salaam
Tel: 21251 Exl. 265
Telex: 41030
Hewlell·Packard lid,
14 Wesley Sl
Csstleford
Yorks WF10 lAE
Tel: (0977) 550016
TWX: 5557335
THAILAND
UNIMESA Co. ltd
Elcom Research BUlldmg
2538 Sukumvil Ave.
Bangchak, Bangkok
Tel' 39-32-387. 39·30-338
Hewletl·Packard LId.
Tradax House
SI. Mary's Walk
Maidenhead
Berkshire, SL6 1ST
GB-England
TRINIDAD &
TOBAGO
CARTEL
Caflbbean Telecoms LId.
P.O Box 732
69 Frederick Sireet
Port·of-Spain
Tel: 62·53068
TUNISIA
Tunlsle Eleclronique
31 Avenue de la Llberte
Tunis
Tel: 280144
Corema
1 lei. Av. de Carthage
Tunis
Tel' 253821
Telex: 12319 CABAM TN
TURKEY
TEKNIM Company LId
Riza Sah Pehlevi
Caddesi No, 7
Kavaklidere, Ankara
Tel: 275800
Tele~: 42155
Teknim Com., Ltd.
Barbaros Bulvafl 55/12
Besikyas.l.tanbut
TeJ:613546
Telex: 23540
E.M.A
Muhendislik Kollekllf Sirkell
Mediha Eidem Sokak 41/6
YUksel Caddesl
Ankara
Tel: 175622
YilmazOzyurek
Milli Mudafaa Cad 16/6
Kizilay
Ankara
Tel: 25 03 09 - 178026
Telex: 42576 OZEK TR
UNITED ARAB
EMIRATES
Emllac Ltd. (Head Ollice)
P.O, Box 1641
SharJah
Tel' 354121/3
Telex: 8136
Hewlel1·Packard LId.
Morley Road
Staplehill
Bristol. as 16 40T
GB-England
HewleU-Packard lid.
South Queensferry
West Lothian. EH30 9TG
GB·Scotiand
Tel: {031) 331 1188
Telex: 72682
UNITED STATES
ALABAMA
700 Cenlury Park Soulh.
SUite 128
Birmingham 35226
Tel. (205) 822·6802
P,O Box 4207
8290 Whilesburg Dr.
Huntsville 35802
Tel: (205) 881·4591
ARIZONA
2336 E. Magnolia SI.
Phoenix 85034
Tel: (602) 273·8000
2424 Easl Aragon Rd.
Tucson 85706
Tel: (602) 273·8000
'ARKANSAS
Medical Service Only
P.O. Box 5646
Brady Slalion
little Rock 72215
Tel: (501) 376-1844
CALIFORNIA
1579 W Shaw Ave.
Fresno 93771
Tel: (209) 224·0582
1430 Easl Orange1horpe Ave.
Fullerton 92631
Tel. (714) 870·1000
5400 West Rosecrans Blvd
P.O. Box 92105
World Way Pos!al Center
Los Angeles 90009
Tel: (213) 970-7500
TWX' 910·325-6608
646 W. North Markel Blvd.
Sacramento 95834
Tel: (916) 929·7222
9606 Aero Drive
PO. Box 23333
San Diego 92123
Tel: (714} 279-3200
363 Brookhollow Dr.
Santa Ana, CA 92705
Tel: (714) 641·0977
3003 Scoll Boulevard
Santa Clara 95050
Tel' (408) 988·7000
TWX 910-338·0518
454 Carllon Coorl
So. San Francisco 94080
Tel (415) 877·0772
MARYLAND
7121 Slandard Drive
Park .....ay lnduslnal Center
Hanover 21076
Tel: {301} 796·7700
TWX: 710·862·1943
2 Choke Cherry Road
Rockville 20850
Tel: {30t} 948-6370
TWX 710·828·9684
MASSACHUSETTS
32 Hartwell Ave.
Lexington 02173
Te'!: (617) 861·8960
TWX 710-326·6904
MICHIGAN
23855 Research Drive
Farmington Hills 48024
Tel: (313) 476·6400
724 Wesl Cenlre Ave
Kalamazoo 49002
Tel. (616) 323·8362
MINNESOTA
'Tarzana
Tel: (213) 705-3344
2400 N Pnor Ave.
SI. Paul55113
Tel (612l636·07oo
COLORADO
5600 DTC Parkway
Englewood 80110
Tel (303l771·3455
MISSISSIPPI
322 N. Mart Plaza
Jackson 39206
Tel (601) 982·9363
CONNECTICUT
47 Barnes Induslrral Road
Barnes Park Soulh
Wallingford 06492
Tel (203) 265·7801
MISSOURI
11131 Colorado Ave,
Kansas City 64137
Tel. (816) 763·8000
TWX 910·771-2087
FLORIDA
P.O. Box 24210
2727 N.W 62nd $treel
Ft. Lauderdale 33309
Tel' (305) 973·2600
1024 Execullve Parkway
St. Louis 63141
Tel: (314) 878·0200
4080 Woodcock Drive # 132
Brownell BUilding
Jacksonville 32207
Tel: (904) 398·0663
P.O. Box 13910
6177 Lake Ellenor Or
Orlando 32809
Tel: (305) 859·2900
PO, Box 12826
SUite 5. Bldg. 1
OHice Park Norlh
Pensacola 32575
Tel: (904) 476·8422
110 South Hoover Blvd.
SUite 120
Tampa 33609
TeL (813) 872·0900
GEORGIA
PO. Box t05005
450 Interslale North Parkway
Atlanta 30348
Tel' (404) 955·1500
TWX: 810·766·4890
Medical Service Only
•Augusta 30903
Tel (404) 736·0592
P.O. Box 2103
1172 N. Davis Drive
Warner Robins 31098
Tel' (912) 922·0449
HAWAII
2875 So. King Slreet
Honolulu 96826
Tel' (808} 955·4455
NEBRASKA
Medical Only
7101 Melcy Road
SUire 101
Omaha 68106
Tel (402) 392·0948
NEVADA
'LaB Vegas
Tel: (702) 736·6610
NEW JERSEY
Cryslal Brook ProfeSSional
Building
Roule 35
Eatontown 07724
Tel: (201) 542·1384
W, 120 Century Rd.
Paramus 07652
Tel: (20 I) 265·5000
TWX: 710·990-4951
9920 E 42nd Srree!
SUlle 121
Tulsa 74145
Tel' (918) 665·3300
OREGON
17800 S.W Lower Boones
Ferry Road
Tualatin 97062
Tel: (503) 620·3350
PENNSYLVANIA
1021 81h Avenue
King of Prussia Indusillal Park
King of Prussia 19406
Tel (215) 265·7000
TWX 510·660·2670
111 Zeta Dflve
Pittsburgh 15238
Tel: (412l782·04oo
SOUTH CAROLINA
POBox 6442
6941·0 N. Trenholm Road
Columbia 29206
Tel: (803) 782·6493
TENNESSEE
8906 Kingslon Pike
Knoxville 37919
Tel: (615) 691·2371
3070 Directors Row
Drrectors Square
Memphis 38131
Tel' (901)346-8370
'Nashvllle
Medical Service Only
Tel: (615) 244·5448
TEXAS
4171 North Mesa
Suite Cl10
EI Paso 79902
Tel: (915) 533·3555
P.O. Box 42816
10535 Harwln SI
Houston 77036
Tel: (713) 776-6400
'Lubboek
Medical Selvlce Only
Tel: (806) 799·4472
156 Wyall Drive
Las Cruces 88001
Tel: (50S) 526·2484
TWX: 91O·9983·0550
UTAH
2160 Soulh 3270 West Slreel
Salt Lake City 84119
Tel: (801) 972·4711
NEW YORK
6 Au10malion lane
Computer Park
Albany 12205
Tel: (518) 458·1550
TWX: 710·444·4961
5201 TolJview Dr.
RoHing Meadows
60008
Tel' (312) 255-9800
TWX: 910·687-2260
NO.1 Pennsylvania Plaza
55th Floor
34th Slreel & 8lh Avenue
New York 10001
Tel: (212) 971·0800
INDIANA
7301 North Shadeland Ave
Indianapolis 46250
Tel' (317) 842·1000
TWX: 810·260·1797
5858 East Molloy Road
Syracuse 13211
Tel: (315)455·2486
LOUISIANA
P.O. Box 1449
3229·39 Williams Boulevard
Kenner 70062
Tel: (504) 443·6201
OKLAHOMA
P.O. Box 32008
6301 N. Meridan Avenue
Oklahoma City 73112
Tel: (405) 721·0200
P.O. Box 1270
201 E. Arapaho Rd
Rlehard.on 75081
Tel: (214) 231·6101
650 Pennlon Hill OHice Park
Fairport 14450
Tel: (716) 223·9950
TWX: 510·253·0092
KENTUCKY
10170 Linn Sialion Road
SUire 525
Louisville 40223
Tel: (502l426·01oo
330 Progress Rd.
Dayton 45449
Tel: (513l859-8202
NEW MEXICO
P.O. Box 11634
Sialion E
11300 Lomas Blvd.. N.E.
Albuquerque 87123
Tel: (505) 292·1330
TWX: 910-989·1185
ILLINOIS
211 Prospecl Rd.
Bloomington 61701
Tel' (309) 663·0383
IOWA
2415 Hemz Road
Iowa City 52240
Tel' (319) 351-1020
9{l2 Crupper Ave
Columbu.43229
Tel (614) 436·1041
1 Crossways Park Wesl
Woodbury 11797
Tel. (516) 921·0300
TWX: 510·221·2183
Tel 1513)671·7400
NORTH CAROLINA
5605 Roanne Way
Greensboro 27409
Tel; (919) 852·1800
OHIO
MedicaVCompuler Only
9920 Carver Road
Cincinnati 45242
Tel: (513) 891·9870
16500 Sprague Road
Cleveland 44130
Tel: (216)243-7300
TWX. 810-423-9430
205 Billy Milchell Road
San Antonio 78226
Tel: (512) 434·8241
VIRGINIA
PO. Box 9669
2914 Hungary Spring Road
Richmond 23228
Tel: {804} 285·3431
Compuler Sysrems/Medical
Only
Airport Execulive Center
SUlle 302
5700 Thurs10n Avenue
VirginIa Beach 23455
Tel: (804j460-2471
WASHINGTON
BellelreJd OUice Pk.
1203· 114th Ave. S.E.
Bellevue 98004
Tel: (206) 454-3971
TWX: 910·443-2446
P.O. Box 4010
Spokane 99202
Tel: (509) 535-0864
'WEST VIRGINIA
Medical/AnalylicalOnly
4604 Mac Corkle Ave.• S.E.
Charleston 25304
Tel: 1304} 925·0492
WISCONSIN
150 Soulh Sunny Slope Road
Brookfleld 53005
Tel: (414) 784·8800
FOR U.S. AREAS
NOT LISTED:
Conlacl lhe regional ottice
nearest you'
Atlanta. Georgia
North
Holly-wood. California.
Rockville. Maryland
Roiling Meadows. IllinOIS
Their complele addresses
are IIsled above.
USSR
Hewlett·Packard
Representallve OHice
USSR
POkrovsky Boulevard
4f17·kw 12
Moscow 101000
Tel. 294.20.24
Telex. 7825 hewpak su
YUGOSLAVIA
Iskra Commerce. n.sol.o.
Zastops!VO Hewlell·Packard
Obihcev Venac 26
YU 11000 Beograd
Tel 636·955
Telex. 11530
Iskra Commerce. n.SOl.o.
Zaslopstvo Hewletl·Packard
MlklOSlceva 38NI!
YU·61000 Ljubljana
Tel: 321-674, 315-879
Tele~: 31583
URUGUAY
Pablo Ferrando S.A.C.el.
Avenrda Ilalia 2877
Casilia de Correo 370
Montevideo
Tel: 40·3102
Telex: 702 Public Boolh
Para Pablo Ferrando
VENEZUELA
Hewlen-Packard de Venezuela
C.A.
P.D Box 50933
Caracas 105
los Ruices Norle
3a Transversal
Edlliclo Segre
Carac.. 107
Tet: 239·4133 (20 lines)
Telex: 25146 HEWPACK
ZAMBIA
R,J. Tilbury (Zambia) ltd.
P.O. Box 2792
Lusaka
Tel' 73793
MEDITERRANEAN AND
MIDDLE EAST
COUNTRIES NOT
SHOWN, PLEASE
CONTACT:
Hewletl-Packard S.A.
Medilerranean and Middle Easl
Operallons
35.1<010kolronl Slreet
Plalia Kefallariou
GR-KIIJsSla·Athens, Greece
Tel: 8080359/429
Telex: 21·6588
Cable: HEWPACKSA Athens
SOCIALIST
COUNTRIES NOT
SHOWN, PLEASE
CONTACT:
HewleU·Packard Ges.m.b.H.
Handelskal52
P.O. Bo~ 7
A·1205 Vienna, Austria
Tel. (0222) 3516211027
Cable: HEWPAK Vienna
Telex: 75923 hewpak a
OTHER
AREAS
NOT
LISTED, CONTACT:
Hewlen·Packard
Interconllnenlal
3495 Deer Creek Road
Palo Alto, California 94304
Tel: (415) 856·1501
TWX: 910-373·1267
Cable: HEWPACK Palo Allo
Telex: 034-8300. 034-8493
Hewlell·Packard SA
7. rue du BOls·du·Lan
P.O. Bo_
CH·1217 Meyrin 2· Geneva
SWllzerland
Tel. (022) 82 70 00
Cable' HEWPACKSA Geneva
Telex: 2 24 86
'Servlce Only
2·15·80
FliOW
HEWLETT
~~ PACKARD
03476-90006
Printed in U.S.A.
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