Hewlett Packard 403B AC Voltmeter Operating and Service Manual

OPERATING AND SERVICE MANUAL

AC VOLTMETER

4038

, . S "tIS i

I f

I

J / un lUT

CI.VIlI,,'

FUNCTION

0"

ON

0

INPUT

HEWLETT~PACKARD

HEWLETT

=

iI

PACKARD

CE RTI FI CATION

The Hewlett-Packard Company certifies that this instrument was thoroughly tested and inspected and found to meet its published specifications when it was shipped from the factory. The Hewlett-

Packard Company further certifies that its calibration measurements are traceable to the U.S. National Bureau of Standards to the extent allowed by the Bureau's calibration facility.

WARRANTY AND ASSISTANCE

All Hewlett-Packard products are warranted against defects in materials and workmanship. This warranty applies for one year from .tne date of delivery, or, in the case of certain major components listed in the operating manual, for the specified period. We will repair or replace products which prove to

be

defective during the warranty period provided they are returned to Hewlett-

Packard. No other warranty is expressed or implied. We are not liable for consequential damages.

Service contracts or customer assistance agreements are available for Hewlett-Packard products that require maintenance and repair on-site.

For any assistance, contact your nearest Hewlett-Packard Sales and

Service Office. Addresses are provided at the back of this manual.

OPERATING AND SERVICE MANUAL

-hp- Part No. 00403-90010

MODEL 4038

AC VOLTMETER

Serials Prefixed: 0986A

If other serial prefixes require modification of this manual, the changes will appear in Appendix C or in an associated "Manual

Changes" supplement.

Copyright Hewlett-Packard Company 1962

P. O. Box 301, Loveland, Colorado, 80537 U. S.A.

Printed: January 1973

Mode1403B Table of Contents

I

Section

GENERAL INFORMATION . .

1-1. Description. : . . . .

1-5.

Instrument and Manual

1-7.

Accessories Available.

Section

II

Identification. • . . .

INSTALLATION . • . . . .

2-1.

Inspection . • . . • . .

2-4.

Power Requirements . . • • .

2-6.

Installation .

2-8.

Repackaging For Shipment.

TABLE OF CONTENTS

Section ill OPERATING INSTRUCTIONS

3-1.

Introduction . . . . . .

3-3.

Front Panel Description. .

3-5.

Operating Procedure. . . .

3-7.

Battery Charging Information.

3-9.

Instrument Temperature Limits. .

3-11. Input Protection . • . .

3-13. Voltage Measurements

3-18. Waveform Errors

3-21. Decibel Measurements

3-24. Impedance Correction Graph

3-27. Current Measurements . . . .

3-28.

Clip -On Probe. . . . . .

.

.

.

Page

1-1

1-1

1-1

1-1

Page

2-1

2-1

2-1

2-1

2-1

Page

3-1

3-1

3-1

3-1

3-1

3-1

3-1

3-1

3-1

3-4

3-4

3-4

3-4

Section

V MAINTENANCE

5-1.

Introduction

Section

VI REPLACEABLE PARTS . .

6-1.

Introduction.......

6-4.

Ordering Information. .

6-6.

Non-Listed Parts. . .

.

.

5-6.

Test Instruments Required.

5-8.

Meter, Mechanical Zero.

5-10. Performance Checks

5-12.

Calibration Checks .

.

5-13.

5-16.

5-17.

Frequency Response Checks.

Noise Check .

Input Resistance Check. .

5-18. Adjustment and Calibration

Procedures. . . . . . . . .

5-20.

5-21.

5-23.

Power Supply Adjustment

Input Resistance . . . . .

Overload Check. . .

5-24.

5-25.

Calibration and Tracking.

High Frequency Response

5-26.

30-Volt Response Calibration .

5-27. Troubleshooting . . . . . . . . . .

5-29. Repair. . • . . . . . . . . . . . . .

5-30.

Cabinet Removal .

5-31.

5-33.

5-35.

5-37.

Servicing Etched Circuit Boards

Transistor Replacement

Function Switch Repair

.

.

Fluorescent Indicator Decal.

Page

5-1

5-1

5-1

5-1

5-2

5-2

5-2

5-3

5-3

5-6

5-6

5-6

5-7

5-7

5-7

5-3

5-3

5-4

5-4

5-4

5-5

5-5

5-5 -

Page

6-1

6-1

6-1

6-1

Section

IV THEORY OF OPERATION . .

4-1.

Introduction . • . . . .

4-3.

Preliminary Attenuator .

4-6.

Input Circuit. • • . . .

4-11. Intermediate Attenuator .•

4-20. Meter Rectifier Circuit

4-25. Power Supply. . . • . . • .

Page

4-1

4-1

4-1

4-1

4-2

4-2

4-3

Appendix

A

B

C

CODE LIST OF MANUFACTURERS

SALES AND SERVICE OFFICES

MANUAL BACKDATING CHANGES

LIST OF

Number

1-1.

1-2.

3-1.

Specifications. . . . . . • . . . . . .

Accessories Available . • . . . • • . .

Effect of Harmonics on Model 403B

Page

. 1-1

.• 1-2

3-4

Voltage Measurements • . • • • • .

3-2.

Examples of Voltage and DB Measurements. 3-4

5-1.

Test Instruments Required. . . . . • . . • 5-1

TABLES

Number

5-2.

Calibration Check Table. . . . . . .

5-3.

Troubleshooting. . . . . . . . . .

5-4.

Test Procedure Troublesliooting .

5-5.

Transistor Replacement.

6-1.

Replaceable Parts.

6-2.

Mechanical Parts

Page

5-2

5-6

5-6

5-7

6-2

6-5

Number

1-1.

Model 403B Transistorized AC

LIST OF ILLUSTRATIONS

Page

Voltmeter. • . . . . . . .

. . . . . . 1-0

3-1.

Front Panel Description . . . . • . . . . . 3-2

3-2.

Voltage Measurements. . . . • . . . . . . 3-3

3-3.

Model403Blmpedance Correction Graph . . 3-5

4-1.

Model403BFunctionaiBIockDiagram . • . 4-0

4-2.

Input Amplifier. . . • . • . . . . . . .

. 4-1

4-3.

Diode Current Vs Diode Voltage 4-2

4-4.

Fixed Amplifier Block Diagram. . .

. 4-2

4-5.

Meter Rectifier, Simplified Diagram . . . 4-3

Number

4-6.

5-1.

5-2.

Meter Rectifier Circuit.

Model 403B Top View.

Model 403B Bottom View

5-3.

Overload Check Setup . . . • • • • • .

5-4.

Performance Check Setup. .

5-5.

5-6.

Frequency Response Setup

Range SWitch Detail . . .

Page

4-3

5-0

5-2

5-4

5-4

5-5

. • • •• 5-8

5-7.

5-8.

6-1.

Function Switch Detail. •

Schematic Diagram

Exploded View .

5-9/5-10

5-9/5-10

. . . . .

6-7 iii

Section I

1-0

'>'

\

\.\

\

\

,\\;)

-s

I

OECI8HS

'''1100

8

J

1 r ~ I

,

I

./

,

:x

~/

" H I

RANGE

VOLn oe

Model 403B

Ac Voltmeter standard

Model 403B

Ac Voltmeter

Option 01

Figure 1-1.

Model 403B

Ac Voltmeter

Model403B

Model403B Section I

SECTION I

GENERAL INFORMATION

1-1.

DESCRIPTION.

1-2.

The -hp- Model 403B Transistorized AC Voltmeter is a general purpose instrument that measures rms values of ac voltages in the 5 Hz to 2 MHz range.

The instrument has full-scale ranges from 1 mV to

300 volts (-72 dBmto+52dBm) in a 1,3,10 sequence.

The Model 403B meter face is calibrated with the upper scale in volts (rms); the Model 403B Option 01 meter face is calibrated with the upper scale in dB. Models

403B and 403B Option 01 are shown in Figure 1-1, and specifications are given in Table 1-1.

on the title page of this manual, change sheets supplied with the manual will define the differences between your instrument and the Model 403B described in this manual.

Some serial numbers may have a letter separating the two sections of the number. This letter indicates the country in which the instrument was manufactured.

1-7.

1-8.

ACCESSORIES AVAILABLE.

To increase the usefulness of your instrument, the following accessories are available:

1-3.

The Model403B operates from Nickel Cadmium batteries.

The instrument also includes a self-contained battery charger which operates on 115 or 230 volts ac.

a.

-hp- Model 11005A Line Bridging Transformer.

b.

-hp- Model 11039A Capacitive Voltage

Divider.

1-5.

INSTRUMENT AND MANUAL

IDENTIFICATION.

1-6. Hewlett-Packard uses a two-section serial number.

If the first section (serial prefix) of the serial number on your instrument does not agree with those

1-9.

c.

Table 1-2 provides information and use of the accessories mentioned above as well as other useful accessories.

Table 1-1.

Specifications

-hp- Model 10111A BNC-To-Binding Post

Adapter.

RANGE:

O.

001 to 300 volts rms full scale (12 ranges) in a

1, 3, 10 sequence.

FREQUENCY RANGE:

5 Hz to 2 MHz

ACCURACY:

% of Full Scale.

MODEL 403B ACCURACY SPECIFICATION

Frequency

10 Hz to 1 MHz

5 to 10 Hz and

1 to 2 MHz

o

to 50 0 C

o

to -20 oC

±2%

±5%

±8%

±8%

NOMINAL INPUT IMPEDANCE:

2 megohms; shunted by < 60 pF on O. 001-volt to O. 03-volt ranges, < 30 pF on O. 1-volt to

300-volt ranges.

OVERLOAD PROTECTION:

Fuse protected:

DC ISOLATION:

Signal ground may be ±500 Vdc from external chassis.

POWER SUPPLY:

4 rechargeable batteries (furnished).

40-hour operation per recharge (20 hours at -20 0 C), up to 500 recharging cycles (expected battery life of

20,000 hours).

Recharging circuit is self-contained and functions automatically when instrument is operated from ac line (115 or 230V ±10%

48 to 440 Hz, < 3 watts).

MODEL 403B OPTION 01 ACCURACY SPECIFI-

CATION

Frequency o to 50 0 C o to -20 o c

10 Hz to 1 MHz ±0.2 dB ±0.7 dB

5 to 10 Hz and

1 to 2 MHz

±0.4 dB ±0.7 dB

METER:

Individually calibrated, taut band.

Responds to average value of input waveform and is calibrated in the rms value of a sine wave.

TEMPERATURE RANGE:

-20oC to +50oC.

DIMENSIONS:

5-1/8 in. wide, 6-3/32 in. high, 8 in. deep.

ACCESSORIES AVAILABLE:

-hp- 11002A Test Leads, 5 ft. long, dual banana plug to alligator clips.

-hp- 11003A Test Leads,

5 ft. long, dual banana plug to probe and alligator clip.

ACCESSORY FURNISHED:

Detachable power cord.

1-1

Section I Model403B

Model No.

11002A

11003A

1l01lA

1l005A

1l039A

456A

11004A

Test Leads

Adapter

Use

Table 1-2.

Accessories Available

Features

Dual Banana Plug to Alligator Clips

Dual Banana Plug to Probe and Alligator Clip

Line Bridging Transformer

Provides balanced 600 -ohm input to unbalanced 600-ohm output for measurements on balanced lines.

Capacitive Voltage Divider

(Division ratio: 1000:1)

Binding Post to BNC

Terminating Resistance: 600 or 10 K ohms

Frequency Range: 20 Hz to 45 kHz

Power Handling Capacity: +15 dBm (4.5 V into 600n)

AC Current Probe

1 mY/rnA ±1% at 1 kHz

Line Matching Transformer

Provides balanced 135 or 600 ohm input to 600 ohm unbalanced output for measurements on balanced lines.

Accuracy:

Input Capacity:

Max. Voltage Rating:

±3%

15 pF ± 1 pF

60 Hz 25 kV, 100 kHz

22 kV, 1 MHz 20 kV, 10 MHz 15 kV, 20 MHz 7 kV

Resistance Max. Current Accuracy

< 50 milliohms 1 amp rms

1. 5 amp peak

±2%

100 Hz to 3 MHz

Terminating Resistance: 600 or 10 K ohms

Frequency Range: 5 kHz to 600 kHz

Power Handling Capacity: 22 dBm (10 V into 600 n)

1-2

Model403B section II

2-1.

INSPECTION.

2-2.

Unpack the instrument upon receipt and inspect it for signs of physical damage such as scratched panel knobs etc.

If there is any apparent damage, file a claim with the carrier and refer to the warranty page on the back side of the front cover of this manual.

2-3.

An electrical inspection should be performed as soon as possible after receipt.

To aid in electrical inspection, performance checks are included in section V, Paragraph 5-10.

2-4.

POWER REQUIREMENTS.

2-5.

The ac power circuit which provides charging current tothe Nickel-Cadmium batteries in the instrument can be connected to a 115- or 230- volt, 48 - 440·

Hz, source. A switch located on the rear panel of the instrument allows the user to select 115- or 230volt modes of operation.'

I

WARNING

I

WHEN THE 403B IS USED WITHOUT

THE POWER CORD, THERE IS NO

GROUND RETURN.

USE CAUTION

TO AVOID ELECTRICAL SHOCK.

SECTION II

INSTALLATION

2-6.

INSTALLATION.

2-7.

The -hp- Model 403B is fully transistorized; therefore no special cooling is required.

However, the instrument should not be operated where the ambient temperature exceeds 50 0 C (131 0 F).

2-8.

REPACKAGING FOR SHIPMENT.

- - - - - - N O T E - - - - -

If the instrument is to be shipped to

Hewlett-Packard 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 ofthe instrument.

In any correspondence, identify the instrument by model number, serial number and serial number prefix.

2 -9.

The following is a general guide for repacking for shipment.

If you have any questions, contact your local -hp- Sales and service Office.

(see Appendix B for office locations.) a.

Place instrument in original container if available.

If original container is not available, one can be purchased from your nearest -hp-

Sales and service Office.

If original container is not used, b.

Wrap instrument in heavy paper or plastic before placing in an inner container.

c.

Use plenty of packing material around all sides of instrument and protect panel faces with cardboard strips.

d.

Place instrument and inner container in a heavy carton or wooden box and seal with strong tape or metal bands.

e.

Mark shipping container with 'Delicate Instrument, " "Fra~ile" etc.

2-1

Model403B section ill

SECTION III

OPERATING INSTRUCTIONS

3-1.

INTRODUCTION.

3-2.

This voltmeter is ready for use upon receipt from the factory and will give specified performance after a short warm-up period.

Allow approximately

60 seconds warm-up for optimum performance.

3-3.

FRONT PANEL DESCRIPTION.

3-4.

A description of front panel controls is given in

Figure 3-1.

The descriptions are keyed to the photo that accompanies the figure.

3-5.

OPERATING PROCEDURE.

3-6.

The operating procedure for the Model 403B is given in Figure 3-2.

Instructions are keyed to the photo that accompanies the figure.

3-7.

BATTERY CHARGING INFORMATION.

3-8.

The 403B has a self-contained battery charger.

This instrument is continually charging the batteries whenever the FUNCTION switch is ON and the line cord connected to a 115 or 230 volt source.

In the event of complete discharge, the 403B can be used after twenty minutes of recharging with the line cord connected to an ac source. Complete recharge requires approximately 60 hours (depending on setting of R39) when the Nickel Cadmium cells are completely discharged.

(Refer to Section IV, Paragraph 4-25).

THE FOUR NICKEL CADMIUM BAT-

TERIES IN THE -HP- 403B ARE IN

HERMETICALLY-SEALED CONTAIN-

ERS. UNDER HIGH TEMPERATURES

(ABOVE 50 0 C), HYDROGEN IN THE

HERMETICALLY -SEALED BATTERY

CONTAINER CAN BUIlD UP TO LARGE

PRESSURE, CAUSING DAMAGE TO THE

BATTERIES AND/OR INSTRUMENT.

(REFER TO SECTION IV, PAGE 4-3.)

3-9.

INSTRUMENT TEMPERATURE LIMITS.

3-10.

This instrument has certain temperature limitations.

The design of this instrument has provided for safe and stable operation over the range of -20 to

+50 o C (-4 to +131 0 F).

This temperature range is quite adequate for most users; however, keep these limits in mind when operating under field conditions.

Internal temperatures in excess of 122 0 F are quite easy to obtain if the instrument is left in the sun, even if the air temperature is quite moderate.

A good practice is to be certain that the instrument is not stored or operated in direct sunlight to avoid the possibility of reduced performance.

When using 403B at temperatures below OOC, be certain the batteries are fully charged prior to subjecting instrument to this temperature.

3-11.

INPUT PROTECTION.

3-12.

A 1/16 A fuse is included in series with the input Circuit which will open with repeated or excessive overload.

This fuse is accessible when the cabinet is removed.

A spare fuse is included inside the instrument.

3-13.

VOLTAGE MEASUREMENTS.

3-14.

Always leave the instrument onthe1-voltrange or higher when making initial connections to circuits which have dc levels over 25 volts.

Then switch to the appropriate lower range to obtain an up-scale reading.

This practice should be used when making power supply ripple measurements where the dc voltage may be as much as 600 volts, but the ac ripple is only a few millivolts.

To obtain specified accuracy, the ground strap should be connected except when the signal ground is dc offset from chassis ground.

3-15.

If measurements are made from a high-impedance source, hum pick-up can affect the meter indication because of high impedance of both the source and voltmeter.

Shielded leads will reduce pick-up although they will cause an increase in the capacity shunted across the source, with the possibility of excessive circuit loading.

3-16.

The rated 2 megohms input resistance will be effectively reduced (above 1 kHz) by shunt input capacity. (This fact is true for any ac voltmeter.) 50 pF has a reactance of 0.8 megohm at 4 kHz, 80,000 ohms at 40 kHz, etc. The shunt capacity decreases on the higher ranges (see Table 1-1). This factor should be considered when measuring higher frequency voltages in circuits of moderate impedance level.

3-17 .

severe RF circulating currents are generated at potentials approaching 300 volts in the 1 to 2 MHz frequency range. These severe ground currents limit the accuracy of the 403Bto±10% on the 300-volt range.

By using -hp- accessories 1000lA (10:1 divider) and a 10111A (adapter) shunted by a 2-megohm resistor, the accuracy of the 403B can be retained to ±5%.

3-18.

WAVEFORM ERRORS.

3-19.

In order to maintain accuracy of measurement, one must remember that this instrument is an average responding device, but the meter scale is calibrated in terms of the rms value of a pure sine wave.

If the waveform of the voltage being measured contains appreciable harmonics or other spurious voltages, the meter indication will deviate from the true rms value on the order indicated by Table 3-1.

3-1

section

m

Mode1403B

.Ull

lilt

3-2

CD

FUNCTION: Three-position switch checks battery charge when the switch is in the ON position; it applies 27. 5 volts from the Nickel-

Cadmium batteries to the Mode1403B circuitry.

When in the BATT. TESf position, the meter should read above 2.4 volts on the "0-3" meter scale, which is equivalent to 24 Vdc at the battery.

CD

BATT. CHARGE: Glows when instrument is connected to an AC source with the FUNCTION switch turned to the ON position.

Fluorescent Iooicator: Glows when instrument is on.

RANGE: selects range from 0.001 volt to 300 volts rms full scale in a 1, 3, 10 sequence.

CD

INPUT: Connect voltage to be measured to these terminals.

Figure 3-1.

Front Panel Description

Model403B Section m

4058-A-IIIZA o

Select range which gives a reading in the upper

2/3 of the meter scale (This will insure the highest degree of accuracy).

CD

Connect voltage to be measured at the INPUT terminals (red terminal positive and ungrounded black terminal negative).

- - - - N O T E - - - - -

The outer black ground terminal is connected to chassis ground.

For voltage measurements at chassis ground, connect the ungrounded black terminal to the grounded black terminal.

Set FUNCTION switch to BATT. TEsr; front panel meter reading should be greater than

2.4 volts (corresponds to 24 volts at battery).

If less than 2.4 volts, the battery needs recharging.

Refer to Paragraph 3-7 for battery charging instructions.

Set FUNCTION switch to ON; lamp function knob will glow, and the instrument is ready for voltage measurement.

When the instrument is connected to an AC power source and the FUNCTION switch is to

ON, the BATT. CHARGE lamp will glow, indicating that the battery is being charged.

Figure 3-2.

Voltage Measurements

3-3

Section ill Model403B

Table 3-1.

Effect of Harmonics on Model 403B

Voltage Measurements

Input Voltage

Characteristics

Fundamental = 100

Fundamental +10%

2nd harmonic

Fundamental +20%

2nd harmonic

Fundamental +50%

2nd harmonic

Fundamental +10%

3rd harmonic

Fundamental +20%

3rd harmonic

Fundamental +50%

3rd harmonic

True RMS

Value

100

100.5

102

112

100.5

102

112

Value Indicated by 403B

100

100

100 - 102

100 - 110

96 - 104

94 - 108

90 - 116

3-20.

This table is a general one and applies to any average responding rms calibrated voltmeter.

As can be seen in the table, errors are small even with a badly distorted signal (e. g.; 20% 2nd harmonic gives

+0, -2% error).

3-21.

DECIBEL MEASUREMENTS.

3-22.

Measurements in terms of decibels are made in the same way as voltage measurements except that the indication is read on the dB scale (-12 to +2 dB).

The decibel level is the algebraic sum of the meter dB scale indication and DB VOLTS (RANGE) position.

3-23.

To read power directly in dBm, (0 dBm=l milliwatt into 600 ohms) the mE;asurement must be made across 600 ohms.

Comparative dB measurements

(without respect to reference level) may be obtained by direct reading provided each measurement is made across the same impedance value.

The difference in decibels between two or more measurements may be obtained by reading directly from the dB-scale indications.

(For examples of dB measurements, refer to Table 3-2.)

3-24.

IMPEDANCE CORRECTION GRAPH.

3-25.

To obtain the level in dBm with respect to impedances other than 600 ohms, the meter correction.

graph shown in Figure 3-3 may be'Used.

The level

In dBm will be the algebraic sum of the level as indicated on the meter and the correction shown on the graph.

For example, if the range switch is at the

+30 dB position, the measurement made across 90 ohms, and the indication ontheDB scale +1, the level in dBm is obtained as follows:

+ 1 (dB-scale indication)

+30 (range switch position)

+31 (level in dB as indicated by meter)

+ 8 (correction for 90-ohm impedance)

+39 dBm

3-4

Table 3-2.

Examples of Voltage and DB

Measurements

Range

Switch

Meter

Scale

Meter

Indicates

Actual

Level

Voltage measurements:

300

10

.003

.001

3

1

3

1

DB measurements:

+40 dB

+40 dB

+10 dB

-30 dB

-30 dB

*-50 dB

-60 dB dB dB dB dB dB dB dB

1.8

0.44

2.3

.27

+2 dB

-7 dB

-6 dB o dB

-8 dB

-9 dB

+1 dB

180

4.4

.0023

.00027

+42 dB

+33 dB

+ 4 dB

-30 dB

-38 dB

-59 dB

-59 dB

*NOTE: In cases where a meter scale reading below -8 dB is obtained, it is best to switch to the next lower range on the instrument so a reading will be obtained in the upper portion of the scale where highest accuracy may be obtained.

The same situation exists for voltage measurements.

When a reading is obtained in the lower 1/3 scale, the range switch should be switched to the next lower range to obtain a reading in the upper 2/3 scale.

3-26.

ment made across 10,000 ohms:

3-27.

CURRENT MEASUREMENTS.

3-28.

For the same conditions, with the measure-

+ 1 (dB-scale indication)

+30 (range switch position)

+31 (level in dB as indicated by meter)

-12.5 (correction for 10,OOO-ohm impedance)

+18.5dBm

CLIP-ON PROBE.

3-29.

The -hp- Model 456A Current Probe provides quick measurement of current from 1 rnA to 1 amp full scale with minimum circuit loading.

3-33.

To use the Model 456A, simply clamp the probe around the current carrying wire and plug the output into the Model 403B.

The probe output is 1 mV/mA.

Model403B

Section III

+20

+15

Z

0

~

U

W a: a:

0 u a: w

~

W

~

~

OJ

0

I

+10

+5

0

-5

-10

-15

-20

-25

I 10 100 IK 10K

IMPEDANCE - OHMS lOOK

Figure 3-3.

Model 403B Impedance Correction Graph

3-5

Model403B

Section IV

SECTION IV

THEORY OF OPERATION

4-1.

INTRODUCTION.

4-2.

The Model403B includes a preliminary input attenuator, a high impedance emitter follower circuit, a range attenuator and a wide range fixed gain amplifier.

Refer to Figure 4-1.

4-3.

PRELIMINARY ATTENUATOR.

4-4.

The RANGE switch is divided up into two sections: the preliminary attenuator, located between the input terminals and Q1, and the intermediate attenuator, located between Q2 and Q3. The preliminary input attenuator has two ranges, 100:1 and 10,000:1, which are switched in at the appropriate time to keep the input voltage to Q1 less than O.

030 volt.

This not only prevents overloading the input system, but also provides the necessary accurate attenuation to work with the intermediate attenuator to produce the conventional 1, 3, 10 sequence for correct meter operation.

4-5.

The attenuators are of the compensated resistorcapacitor (rc) type, with the capacitive division ratio made equal to the resistive ratio to maintain a constant division ratio at all frequencies.

By making one of the capacitors adjustable, the small variations in stray circuit capacity can be compensated for, so the voltmeter will have a flat response.

The exact division ratio is set at low audio frequencies by the trimmer potentiometers, which bring the resistor division ratio to the exact value.

-13V

R7

C9

+

4-6.

INPUT CIRCUIT.

4-7.

Rll, CR1, and CR2 make up a limiting circuit which is used for overload protection to prevent high instantaneous voltages from being impressed on the base of Q1.

F1 is a 1/16 amp fuse used to protect the 403B against a continuous or repeated overload.

4-8.

Since transistors are inherently low impedance devices, a need for a high input impedance is required.

Referring to Figure 4-2, it would seem that the input resistance of the first stage would be approximately

Ri of a grounded collector configuration in parallel with R9, plus the R7-RB combination.

Q1 and Q2 ~e emitter followers, exhibiting unity gain and no phase reversal.

(Ri

=

approx. input Z of a common collector stage.)

4-9.

The output of Q2 is fed back to the junction of

R9 and R7 -R8. There is an ac voltage existing at this point that is very nearly the same amplitude as, and in phase with, the input voltage. Since a very small ac voltage exists across R9 (due to the feedback from

Q2), the input current lin will be very small. Thereby:

Zin

E in

=

~

10

It can be seen that when lin is very small, the apparent Zin becomes very large.

4-10.

The Ri of Q1 is increased in a similar manner by feeding the Q2 emitter voltage to both the collector and emitter of Q1.

-13V

CIO

RI5

02

-S-POSITIVE

FEEDBACK

+ ~ ~

RIG

~EOUT

CI2

+

Figure 4-2.

Input Amplifier

4-1

4-2

Section IV

Mode1403B

4-11.

INTERMEDIATE ATTENUATOR.

4-12.

The output of Q2 is fed to the intermediate section of the range attenuator.

The range attenuator is a voltage divider, in sequence with the preliminary attenuator.

A (1, 3, 10 etc.) ratio is obtained resulting in 10 DB steps.

Refer to Figure 4-1.

4-13.

Refer to schematic diagram (Figure 5-8) in the back of this manual.

4-14.

Transistors Q3 through Q6 make up the fixed gain amplifier which is used to develop the current for (full scale) meter deflection and to provide the meter circuit with a high impedance source for linear operation at all current levels.

4-15.

The output of the intermediate range attenuator is fed to the base of Q3 (djfferential amplifier), and compared with a feedback signal to its emitter from the meter circuit.

This difference signal is fed to Q4 which in turn is directly coupled to Q5 and Q6.

Q4 is a grounded emitter amplifier.

Q5 is a common collector amplifier which impedance matches Q6, a common base amplifier.

The direct couple feature of the amplifiers is necessary because of the low-frequency

(5 hertz) response of the 403B.

R24 through R26 make up the dc feedback loop which tends to minimize any tendency for dc drift due to ambient temperature change.

R33 corrects the total gain of Q3 through Q6.

4-16.

The meter source impedance is increased by the use of negative feedback from the output of the meter rectifier bridge to the emitter of Q3. Resistor

R28 through R30, and C15 and C16 correct the phase of the feedback at high frequ~ncies.

4-17.

The necessity of high meter source impedance can be understood by referring to Figures 4-3 and 4-4.

4-18.

To have correct voltmeter action, it is necessary that the change in meter circuit be proportional to a change in amplifier input voltage.

The load resistance, then, should remain constant. Note in Figure 4-3, however, that when 1

0

(and therefore the diode voltage Ed) decreases, the diode resistance Rei

(and therefore the load resistance) increases, affecting meter linearity.

Note in Figure 4-4 that

Rei appears in series with Ro' the source impedance. The effect on output current, due to changes in diode resistance with voltage, can be minimized by feeding the meter circuit from a constant current or high impedance source.

In this way, changes of diode resistance will have a negligible effect ,on the total current passing through them and hence through the meter.

4-19.

The effect of diode resistance change is further minimized by Q6 current through R35 which impresses a fixed 0.3 volt across CR3 and CR4, biasing them close to their contact potential.

~I o

/

/

V

/

V

/

0.6

/

VOLTAGE INCREASING----•• RO

DIODE VOLTAGE (Ed)

Figure 4-3.

Diode Current Vs Diode Voltage

_ _ _ NEGATIVE D.C.

FEEDBACK RZ4

' - - - - - - - - - - - - - . _ _ - - - i M

+---NEGATIVE A.t. FEEDBACK

T C20

Figure 4-4.

Fixed Amplifier Block Diagram

4-20.

METER RECTIFIER CIRCUIT.

4-21.

The meter rectifier circuit is arranged in a bridge-type configuration, with a crystal diode and a capacitor in each branch and adc microammeter connected across its midpoints. The current through the meter is proportional to the average value of the input voltage waveform.

4-22.

The 403B meter rectifier circuit operation can best be explained by analyzing the circuit in a simplified

Model403B

Section IV

CRI

+

I

I

I

•

1

1 t-----------,

I

I

•

+

CR2

R35

---,

I

I

I

I

I

I

I

I

L ___

R o f\.;

E s

___ J

I

I

1

1

I

1

1

I

1

1

CI7

+

CR3

R m

CI9

+

CR4

+

R36

+13

+

CIS

E f

TO 0 3 - - -....

'~~OA-8-0'a9

Figure 4-5.

Meter Rectifier, Simplified Diagram form.

Figure 4-5 shows a voltage source generating a voltage Es across a circuit made up of CR1, CR2,

M1, Rf, and C1, C2.

Note that the current flow for each half cycle (as imicated by the arrows) always passes through the meter in the same direction.

4-23.

In this circuit, disregarding contact potential aM assuming zero meter resistance, the circuit could be considered as a small resistance made up of CR1 aM CR2, in series with one capacitor (C1 + C2) in series with across

Rt.

Therefore, there will be a voltage

Rf

proportional to the input signal.

4-24.

In the actual 403B meter rectifier circuit, capacitors C17 and C18 provide a path for the AC feedback loop.

The generator (Q3-Q6) with its large internal impedance (Ro) develops a voltage across the bridge.

The meter is deflected according to the average value of the input: voltage.

The signal across

Rt

as in Figure 4-6 provides negative feedback, resulting in extreme linear meter operation and large

Ro.

4-25.

POWER SUPPLY.

4-26.

The Model 403B operates on batteries only.

This instrument uses four 6. 5 volt nickel cadmium batteries and is designed to have a battery life of 40 hours before recharging.

4-27.

R39 has been adjusted at the factory for a charging rate of 6.2 rnA to prolong battery life.

If the instrument is used frequently in the field, R39 can be adjusted for a charging rate of 11 rnA.

IF R39 IS ADJUSTED TO THE 11 rnA RATE, THE

INSTRUMENT SHOULD BE USED ON BATTERIES

ONLY EXCEPT WHEN RECHARGING BATTERIES.

THE BATTERIES ARE RECHARGED WHEN THE

403B IS CONNECTED TO AN AC SOURCE WITH

THE FUNCTION SWITCH TO ON. THE BATTERY

LIFE OF THE INSTRUMENT CAN BE PROLONG-

ED AT THE 11 rnA CHARGING RATE IF THE

INSTRUMENT

CHARGED.

lS NOT CONTINUOUSLY OVER-

Figure 4-6.

Meter Rectifier Circuit

4-28.

When the function switch is in the BATT TEST position, and the instrument indicates a battery voltage of 2.4 volts, recharge the batteries for 20 to 25 hours at the 6.2 rnA rate to completely recharge the batteries in the instrument.

A longer charging period will be required if the batteries have been allowed to discharge below 24 volts.

4-29.

Figure 5-8 illustrates the Power Supply

Assembly, which supplies 4.8 rnA of current to the instrument and 6.2 rnA of current to the batteries. R39 is used to control the amount of current used to charge the batteries and caution must be used if R39 is adjusted to maximum charging rate.

THE FOUR NICKEL-CADMIUM BATTERIES

IN THE 403B ARE IN HERMETICALLY

SEALED CONTAINERS.

THE USER MUST

BE COGNIZANT OF TEMPERATURE EX-

TREMES WHILE CHARGING THE BATT-

ERIES.

UNDER HIGH TEMPERATURE

(ABOVE 50

0

CENTIGRADE), HYDROGEN IN

THE HERMETICALLY SEALED BATTERY

CONTAINER CAN BUILD UP LARGE PRES-

SURE CAUSING DAMAGE TO THE BATTER-

IES AND/OR INSTRUMENT.

DO NOT CHARGE

BATTERIES ABOVE 40

0

CENTIGRADE OR

104

0

FAHRENHEIT, IF R39 IS SET ABOVE

6. 2 MA CHARGING RATE.

4-30.

Figure 5-8 illustrates a conventional power supply.

For 115 volt operation, the power transformer primaries are connected in parallel, and in series when used for 230 volt operation.

The rectifier circuit is a conventional full wave bridge using C21 for a filter capacitor.

Diode CR9 (7 volt breakdown diode) am Q7 make up the Constant Current Generator.

The collector current of Q7 is equal to the voltage across CR9 divided by R37 and R39.

4-31.

CR10 prevents the batteries from discharging to the charging circuit when the instrument is in the

OFF position.

4-3

Section V Model403B

METER METER

(-) (+) -13V -6.5V

t

l3V

CI6

·CAL IMV

2MC

R29

METER CAL

IMV RANGE

403B-A-1333

PRE-AMPL SIG PRE-AMPL

INPUT GRD OUTPUT

R33

LOOP GAIN

ADJ

METER AMPL

INPUT

Figure 5-1.

Model 403B Top View

5-0

Model403B section V

SECTION V

MAINTENANCE

5-1.

INTRODUCTION.

5-2.

This section contains test and maintenance information for your 403B.

Included is a quick performance check that may be made with the instrument in its cabinet, as a part of roUtine maintenance or as a part of incoming quality control inspection.

5-3.

This instrument should require very little maintenance.

Should failure occur, however, a troubleshooting paragraph (5-27) has been included to assist in locating the failure.

An exploded view of the Model

403B is given in Figure 6-1 to help in locating parts.

5-8.

METER, MECHANICAL ZERO.

5-9.

When the meter is properly zero-set, the pointer will rest over the zero mark on the meter scale when the voltmeter is 1) at normal operating temperature, 2) in its normal operating position, and

3) turned off.

Zero-set as follows to obtain best accuracy and mechanical stability.

a.

Allow the voltmeter to operate for at least

20 minutes; this allows the meter movement to reach normal operating temperature.

b.

Turn voltmeter off and allow 30 seconds for all capacitors to discharge.

c.

Rotate mechanical zero-adjustment screw

CLOCKWISE.

5-4.

If it becomes apparent that transistor replacement is necessary, consult Paragraph 3-33 to avoid damage to the new transistor. Care should be taken not to damage the printed circuit board.

5-5.

Errors may be introduced in the 403B because of the capacity added in the circuit after cabinet replacement. Therefore, after making gain or frequency response adjustments) temporarily place covers back on instrument and recheck the adjustment.

d.

Continue to rotate adjustment screw CLOCK-

WISE; STOP when pointer is right on zero.

e.

Rotate adjustment screw COUNTERCLOCK-

WISE 15 0 to remove tension.

5-6.

5-7.

TEST INSTRUMENTS REQUIRED.

Table 5-1 gives the test equipment required to check the 403B.

f.

If step e causes the meter to move off zero, repeat procedure, making the

COUNTERCLOCKWISE rotation less than

15 0 •

Table 5-1.

Test Instruments Required

INSTRUMENT TYPE

DC Electronic Voltmeter

MINIMUM REQUIRED SPECIFICATIONS sensitivity: 1 volt full scale minimum

Input resistance: 10 megohms or higher

RECOMMENDED

-hp- INSTRUMENTS

Model 412A

Vacuum Tube Voltmeter

Voltmeter Calibration

Generator

Output voltage range: .001 to 300 volts

Signal frequency: 400 Hz

Distortion: less. than 0.2%; Accuracy

±0.25%

Model 738BR

Voltmeter Calibrator

Termination

Resistor

Resistor

AC Electronic Volt.meter

Clip OnDC

Milliammeter

Oscillator

Feedthrough, 50' ohm

15 kilohm ± 10%,' 10 watt

200 kilohm ± 1%

~

Input impedance: 10 megohms shunted by

25 pF (below the 0.3 volt range)

Accuracy: ±2% from 20 Hz to 1 MHz

Current Range: 3 mA to 1 ampere

Accuracy: ±3% ±0.1 mA

Model 11048B

0811-9034

0757-0128

Model 400E/EL Electronic

Voltmeter

Model 428A/B

DC Milliammeter

Model 652A Frequency range: 5 Hz - 2 MHz

Output impedance: 600 ohms, 50 ohms

Output level: o to 1 V rms into 600 ohms

Monitor: meter circuit with expand function

5-1

Section V Model403B

403B-A-1334

51

RANGE

R3 R4

5-10.

5-11.

The performance checks are in-cabinet tests that compare the 403B with its specifications.

These procedures can be used bothfor incoming and periodic inspections. Refer to Table 5-1 for test equipment required throughout this procedure.

5-12.

a.

b.

c.

d.

e.

PERFORMANCE range.

306 V.

CHECKS.

CALIBRATION CHECKS.

Figure 5-2.

Model 403B Bottom View

- - - - - N O T E - - - - - -

Do not adjust the REF SET control for the remainder of the check.

Rotate the 403B 'FUNCTION switch to BATT

TEST.

Meter' should read 2.4 volts on the

3.0 volt scale.

If 403B does not read 2.4

volts, recharge the batteries.

Connect the 403B as shown in Figure 5-4.

Set the Voltmeter Calibrator for 400 Hz and

300 V rms and set the 403B to the 300 V

The 403B should indicate between 294 V and

Repeat steps c and d for each voltage indicated in Table 5-2.

Table 5-2.

Calibration Check Table

VOLTMETER

CALIBRATOR MODEL 403B

OUTPUT (400 CPS RMS) INDICATION (V RMS)

Minimum Maximum

300V

100V

30V

10V

3V lV

0.3V

O.lV

30mV

10mV

3mV lmV

294V

98V

29.4V

9.8V

2.94V

0.98V

0.294V

0.098V

29.4mV

9.8mV

2.94 mV

0.98 mV

306V

102V

30.6V

10.2V

3.06V

1.

02V

0.306V

0.102V

30.6 mV

10.2 mV

3.06 mV

1. 02 mV

5-13.

FREQUENCY RESPONSE CHECKS.

5-14.

HIGH FREQUENCY RESPONSE CHECK.

a.

Connect the 403B as shown in Figure 5-5.

b.

Set the 652A for 400 Hz and adjust the output level for 0.94 mV indication on 1 mV range of the 403B meter.

c.

Place the 652A OUTPUT MONITOR switch to

EXPAND and adjust the REF SET control for a convenient reference point.

d.

Change the 652A frequency to 500 kHz and adjust the output level for the same reference level as in step c.

e.

The 403B meter indication should be within

0.92 mV and 0.96 mY.

f.

Repeat step d for 1 MHz and 2 MHz. The 403B meter reading should be between O. 89 mV and 0.99 mY.

g.

Repeat the same procedure for the 0.003,

0.01, 0.03, 0.1 and 3 volt range.

5-2

Mode1403B Section V h.

Turn the 403B RANGE switch to 30 volts.

i.

j.

Connect an oscillator (-hp- Model 200 CD}to the 403B INPUT. Set the frequency to 400Hz.

Connect on AC Voltmeter (-hp- Model 400E

E L) to the oscillator output.

k.

Adjust the oscillator for a 20. 0 volt reading on the 403B meter. Record the reading on the monitoring voltmeter (connected in Step j).

1.

Adjust the oscillator frequency to 300 kHz.

Adjust the oscillator AMPLITUDE control until the monitoring voltmeter indicates the reference level recorded in step k.

m.

The 403B meter should indicate between 19. 4V and 20. 6V.

5-15.

LOW FREQUENCY RESPONSE CHECK.

a.

Connect the 403B as shown in Figure 5-5.

b.

Set the 652A for 400 Hz and adjust output level for 0.94 mV indication on 1 mV range of 403B.

c.

Place OUTPUT MONITOR switch on 652A to

EXPAND and adjust REF SET control for a convenient reference point.

- - - - NOTE - - - - - - -

Do not adjust the REF SET control for the remainder of the check.

d.

Change the 652A frequency to 5 Hz and adjust the OUTPUT AMPLITUDE for the same reference level as in Step c.

e.

The 403B meter indication should be between

0.89 mV and 0.99 mY.

f.

Repeat the same procedure for the 0.003,

0.01, 0.03, 0.1, and 3 volt range.

5-16.

NOISE CHE CK.

a.

Disconnect the 403B from the setup shown in

Figure 5-4 and rotate the 403B FUNCTION switch to ON.

b.

Terminate the 403B input with a lOOK ohmshielded load.

The 403B meter deflection should be less than 3% with battery operation and less than 8% on any range with ac operation.

5-17.

INPUT RESISTANCE CHECK.

a.

Connect the 403B as shown in Figure 5-4

(Position B).

b.

Rotate the 403B RANGE switch to 0.01.

c.

Adjust Voltmeter Calibrator for an output of

0.01 volt 400 Hz rms.

d.

The 403B meter should indicate between

9.0 mV and 9.5 mY.

- - - - - N O T E - - - - - - -

This corresponds to an input resistance of 1.

8 to 3. 8 megohms where:

Rinput =

E meter

-----:;::...:...;~---

E input - E meter x R series

5-18.

ADJUSTMENT AND CALIBRATION

PROCEDURES.

5-19.

The following is a complete adjustment and calibration procedure and should be made only if it has been definitely determined that the 403B is out of adjustment. Transistor changes are usually not cause for complete adjustment (see Table 5-5).

If the instrument fails any of the limits given in the following steps, carefully recheck your connections and procedure.

If the instrument still fails the step, refer to Table 5-3 and 5-4 for possible cause and corrective action.

- - - - - - N O T E - - - - - -

In order to avoid the effects of hand capacity, a tuning wand with a nonmetallic shank should be used for all adjustments.

5-20.

POWER SUPPLY ADJUSTMENT.

a.

Connect the 403B to a variable line transformer.

Set the line voltage to 115 volts; turn on the AC Voltmeter, and allow five minutes for warmup.

b.

Connect a Clip-On DC Ammeter (-hp- Model

428A/B) probe around the violet wire connected to battery BT4.

Adjust R39 (see Figure 5-2) for an indication of 6: 2 mA on the

DC Ammeter.

- - - - - NOTE - - - - - -

If the instrument is to be used frequently in the field, R39 can be adjusted for a fast charging rate of

11 mAo Do not charge batteries at temperatures above 40 0 C if R39 is set for 11 mA charging rate. Batt~ry life will be prolonged at the lower charging rate.

c.

Vary the input line voltage from 103 to 127 volts; the Clip-On DC Ammeter reading should not vary more than 1.

0 mA from the reference setting in step b.

d.

Set line voltage to 115 volts. Using a NEMA three prong to two prong ac adapter for isolation, connect an AC Voltmeter (-hp- Model

400E/EL) across the red (BTl) and violet

BT4} wires connected to the batteries; the ripple voltage should not exceed 1.

5 mV.

e.

Set 403B FUNCTION switch to OFF; disconnect ac power source and set FUNCTION switch to ON.

5-3

Section V f.

Connect volts probe of a DC Voltmeter (-hp-

Model 412A) to red wire connected to battery

BT 1; connect common lead of dc voltmeter to violet wire connected to battery BT4.

Model403B o o

VOLTMETER CALIBRATOR hp738BR o

©

oo@

0 o hp403B

AC VOLTMETER

' - - - - - - - - - - - - - - E : r < : : : : : : l A

200K

:t1"4 B

DC VOLTMETER MUST BE ISO-

LATED FROM 403B GROUND.

g.

Rotate 403B FUNCTION switch to BATT

TEST.

If DC Voltmeter reading is not 24 volts, recharge batteries in the 403B.

(See

Paragraph 3-7). Adjust R45 for a 403B-meter indication equal to voltage indicated on DC

Voltmeter.

5-21.

INPUT RESISTANCE.

5-22.

Check the 403B input resistance by following the procedure outlined in Paragraph 5-17.

If the input resistance is not within test limits, the value of

R6 should be changed (typical range of R6 is from 3.9

to 10 megohms).

o o

VOLTMETER CALIBRATOR hp738f3R o

©

o hp403B

AC VOLTMETER

/

Figure 5-3.

Overload Check Setup

5-23.

OVERLOAD CHECK.

a.

Connect the 403B as shown in Figure 5-3.

THE 15KQ RESISTOR MUST BE

CONNE CTED AS SHOWN IN FIG-

URE 5-3 TO PREVENT DAMAGE

TO VOLTMETER CALIBRATOR.

b.

Rotate the 403B FUNCTION switch to OFF; connect anAC Voltmeter (-hp-ModeI400E/EL) between the base of Q1 and chassis ground.

c.

Rotate the 403B FUNCTION switch to ON and

RANGE switch to 0.1 volt.

d.

Set Voltmeter 'Calibrator C,·hp-Model 738BR)

OUTPUT SELECTOR to 400Hz rms and 300 volts; the AC Voltmeter reading should be less than 3.5 volts. (If necessary, check

CR1 and CR2).

Figure 5-4.

Performance Check Setup

5-24.

CALIBRATION AND TRACKING.

a.

Disconnectthe 403Bfrom the ac power source.

(The following procedure should be performed with battery operation).

b.

Connect the 403B as shown in Figure 5-4

(Position A).

c.

- - - - - N O T E - - - - - -

The 200K resistor is used only for the input resistance check (Paragraph 5-21).

Rotate the 403B RANGE switch to O. 001 volt.

d.

Set the Voltmeter Calibrator (-hp- Model

738BR) for 0.001 volt rms at 400 Hz.

e.

Preset R33 (loop gain adj) 1/3 clockwise am adjust R29 (meter cal. 1 mV range) for a full-scale imication on the 403B.

f.

Rotate the 403B RANGE switch to O. 1 volt.

Set the Voltmeter Calibrator to O. 1 volt rms at 400 Hz.

g.

Adjust R3 (cal. 0.1 V 400 HZ) for scale indication on the 403B meter.

a fullh.

Rotate 403B RANGE switch to 30.0 volts and set Voltmeter Calibrator to 30.0 volts at 400

Hz rms.

j.

Adjust R4 (see Figure 5-2) for a full-scale indication on the 403B meter.

k.

Check calibration on the 0.003, 0.01, and

0.03 volt ranges; accuracy should be within

±2.0% of full scale on all ranges.

m.

Set Voltmeter Calibrator for 1. 0 volt. Rotate

403B FUNCTION switch to 1. 0 volt.

n.

Check 403B meter tracking at O. 1 volt increments.

Variation should be less than ±2% of full scale.

5-4

Model403B section V

4038-8-1324

TEST OSCILLATOR hp652A hp403B

AC VOLTMETER

50n FEEO-THRU

TERMINATION hpll048B

Figure 5-5.

Frequency Response setup

5-25.

mGH FREQUENCY RESPONSE.

a.

Connect the 403B as shown in Figure 5-5.

b.

set oscillator (-hp- Model 652A) to 1 mV rms range at 400 Hz.

c.

Adjust OUTPUT AMPLITUDE control for reading of 0.94 mV on the 403B.

d.

Place OUTPUT MONITOR switch to expand and adjust REF SET for a convenient reference point on 652A meter.

e.

Vary the 652A frequency dial between 1 MHz and 3 MHz keeping the same reference point as in step d. Adjust C16 (cal. 1 mV 2 MHz) for O. 94 m V ±5% frequency response between

1 and 2 MHz with a gradual roll-off between 2 and 3 MHz.

If C16 does not have sufticient range, the value of C15 should be cIlanged

(range of C15 is from 100 pF to 160 pF).

f.

Adjust 652A Oscillator for a 300 kHz output frequency and same output level as in step d.

g.

Rotate 652A frequency dial between 300 kHz and 1 MHz while maintaining same reference on meter. The 403B meter should indicate

0.9 mV ±O. 02 mV (±2%).

If necessary, adjust R33 for a flat response.

- - - - - N O T E - - - - - -

Repeat Paragraphs 5-24 and 5-25 if R33 is adjusted.

h.

Rotate the 403B RANGE switch to O.

1.

j.

set the 652A Oscillator for 400 Hz and O. 1

RANGE.

k.

Adjust the OUTPUT AMPLITUDE control for an indication of 0.96 of full scale on the 403B meter.

m.

Readjust the 652A OUTPUT AMPLITUDE control for a convenient reference on the

652A meter.

n.

Change the 652A frequency to 300 kHz while maintaining reference on meter.

p.

Adjust C2 for a O. 96 of full scale reading on the 403B meter.

5-26.

10 VOLT RESPONSE CALIBRATION.

a.

Turn the 403B RANGE switch to the 10 V

RANGE.

f.

Connect Wide Range Oscillator (-hp- Model

200CD) to the 403B INPUT. set the Oscillator frequency to 400 Hz.

c.

Connect anAC Voltmeter (-hp-ModeI400E/EL) to the Oscillator OUTPUT.

d.

Adjust the Oscillator AMPLITUDE for 9.40

volt indication on the 403B meter.

Record the AC Voltmeter (-hp- Model 400E/EL) reading.

e.

set the oscillator frequency to 300 kHz. Adjust the Oscillator AMPLITUDE control until the AC Voltmeter indicates the reference level recorded in step d. The 403B should indicate 9.2 to 9.6 volts.

- - - - - N O T E - - - - - -

The AC Voltmeter used in this procedure should have been recently calibrated and have a known frequency response from 400 Hz to at least 300 kHz.

If there is a variation in response between 400 Hz and 300 kHz, this should be considered when adjusting the 403B.

Adjust C3 for a403B meter indication of 10.0

volts.

g.

Repeat Paragraph 5-25, steps h thru p, adjusting C2 and C3 for optimum performance between 0.1 volt range at 300 kHz and 10 volt range at 300 kHz.

5-27.

TROUBLESHOOTING.

5-28.

To assist introubleshooting, Tables 5-3 and5-4 are included in this section of the manual.

Table 5-3,

Troubleshooting, is used for evaluating problems that may be encountered and easily recognized by the operator, and therefore consists mainly of frontpanel inlications.

Tables 5-3 and 5-4. Test Procedure Troubleshooting, is for the technician to localize areas of trouble encountered while testing the

Mode1403B.

- - - - - NOTE - - - - - -

When replacing any crystal diodes or transistors in the Model 403B, refer to Paragraph 5-33 and Table

5-5.

5-5

section V

Table 5-3.

Troubleshooting

SYMPTOM

No response to input

CAUSE

Fuse F 1 blown

Batteries low

Shorted transistor

CR1 or CR2 shorted

Open contacts in range switch

Low reading on Batt.

test

Noise indication on known quiet source

Recharge Batteries

CR1 or CR2 noisy

Noisy transistors

(usually Q1 or Q2)

CR3 or CR4

Meter pins when switchDirty contacts in range ing through ranges switch

C7, C12, or C13 leaky

Meter pulsates at frequencies below 15 Hz

C17, 18, 20 open or leaky

Meter calibration off on Resistors or capacitors ranges above 0.03

bad in range switch

Meter calibration off on Resistors bad in interranges below 0.1

mediate attenuator

Dirty contacts in range switch

Battery will not hold charge

CR10 shorted

Shorted cell in battery

Battery charge inoperaQ7, CR5, CR6, CR7, tive CR8, CR9, C21

Switch on 230V position when using 115V

./

0.001, 0.1, 10 cali~raReplace C13 tion okay but all other ranges out of calibration at 400 Hz

If all ranges on 400 Hz calibration check out okay except for one or two ranges and the stick resistors check okay

ChangeQ3

At 3 volts 2 MHz meter Shorten leads on R18.

reads high If this doesn't fix problem, replace R18

No adjustment on chargCheck for solder splashes ing current on backside of R39

5-29.

REPAIR.

5-30.

CABINET REMOVAL.

a.

Top Cover: remove the single screw wtich holds the cover to the rear panel and slide the cover toward the rear.

5-6

Model403B b.

Bottom Cover: remove the flat head screw holding the cover to the rear panel and slide the cover toward the rear.

The bail must be up.

c.

Side Covers: remove the flat head screws which hold the cover to the side casting of the instrument.

Table 5-4.

Test Procedure Troubleshooting

SYMPTOM

R29 will not adjust for full scale indication

CAUSE

CR1, 2

CR3, 4 bad

Q1 through Q6 bad

Noise (403B input termUsually Q1 or Q2 noisy inated with a shielded lOOK resistor)

Input resistance out of specs

Q1 or Q2 bad

C9, C10, Cll, R6

Meter does not track properly

1) Meter reads conCR3, CR4 bad sistently above or below R35 wrong value all meter divisions

2) Meter reads above some but below other divisions

Diodes CR3, CR4 bad

Meter M1 bad

Low frequency response C1, 7, 12, 13, 18-20 bad

400D reads more than

1. 5 volts on overload

CR1 or CR2 bad

Excessive Charging Rate Bad CR9, Q7

R39 No Effect

5-31.

SERVICING ETCHED CIRCUIT BOARDS.

5-32.

One double-sided and two single-sided circuit boards are used in the Model 403B.

Follow these general rules when servicing these boards.

a.

Do not apply excessive heat to the conductor or component being soldered.

b.

Use a toothpick or wooden splinter to clean holes before inserting new components.

c.

To remove a damaged component, clip leads near component; then apply heat and remove component lead with a straight upward motion.

d.

To insure good connection between the eyelet and conductor, solder from the conductor side.

Mode1403B Section V

5-33.

TRANSISTOR REP~CEMENT.

5-34.

Transistors can be damaged by excessive heat.

When replacing transistors on the Mode1403B printed circuit board, use a heat sink, such as an alligator clip, and use a low wattage soldering iron. Refer to Table 5-5 for any adjustments after replacement.

5-35.

FUNCTION SWITCH REPAIR.

5-36.

Figure 5-7 gives cabling detail on Model 403B

FUNCTION switch.

5-37.

nut.

Q5

Q6

Q7

FLUORESCENT INDICATOR DECAL.

5-38.

If the FUNCTION switch is removed for any reason, the fluorescent indicator decal will have to be replaced. This decal has a special adhesive on the back that holds firmly against the FUNCTION switch

To assure positive contact, proceed as follows:

REFERENCE

Q1, 2

Q3, 4

CR1, 2

CR3, 4

CR5,

CR9

CR10 a.

Moisten the back of the decal with a piece of tissue soaked in xylene

am

allow a few minutes for the adhesive to soften.

b.

Place the decal over the FUNCTION switch shaft, adhesive side down.

Position the black area directly over the OFF line on the

Model 403B panel

am

press the decal firmly against the FUNCTION switch nut.

c.

Slide a bushing or nut over the shaft so that it will hold the decal in contact with the

FUNCTION switch nut, and allow about 20 minutes for the adhesive to dry.

d.

Remove the bushing or nut used for weighting and install the small spacer and FUNC-

TION switch knob.

Table 5-5. Transistor Replacement

FUNCTION

CHE CKS OR ADJUSTMENTS

REQUIRED

Q1 and Q2 work together to provide a high input impedance

(Emitter Follower)

Check input impedance

Readjust R29

Check noise

Amplifier (Common emitter)

Amplifier (Common collector)

Amplifies signal (Common base)

Protects Q1 from overload

Readjust R33

Readjust R33

Readjust R33

Meter Diodes

Recheck overload characteristic s

Check noise

Readjust R29

Readjust R45

Rectifier Diodes

Zener Diode

Isolation Diode

Charging Current Regulation

Check battery charge current

Readjust R39

Check battery charge current

Readjust R39

REFER TO

PARAGRAPH

5-17 steps a thru d

5-24 steps athru e

5-16 steps a and b

5-25 steps a thru g

5-25 steps a thru g

5-25 steps a thru g

5-23 steps a thru d

5-16 steps a and b

5-24 steps a thru e

5-20 steps e thru g

5-20 steps a and b

5-20 steps a and b

5-20 steps a and b

5-20 steps a and b

5-7

Section V

A3C5-----,

.---------2Q,

Model403B

. - - - - - - - - - , B A R E . - - - - - . .

RED

T~~~~~L-8

SIA(F)

'-------:~

SIA(R)

; - - - - - - - - - - - - - , - t - - , B A R E , - - - - - - - - - - - - - - - - . . ,

~--A3C2.RI

F I - - - - - ,

SIB(F)

,Jr-----~

A3R4.R5------~

SIB(R)

5-8

403B-C-1316

A

51

IRANGEI

SIC(F)

B c o

- - - - A I C I 3

SID(R)

SIA(F)7

SWITCH~

\

DESIGNATOR SECTION

~CONrACT

FRONT SIDE NUMBER

1.

WAFER FRONTS (F) VIEWED FROM BOTTOM FRONT OF INSTRUMENT.

2.

WAFER REARS (R) VIEWED FROM BOTTOM REAR OF INSTRUMENT.

3.

SlC(Rl AND SlD(F) HAVE NO SWITCHING AND ARE NOT SHOWN.

4.

SWITCH SHOWN IN 1.001/ -60

I

POSITION.

5.

CIRCLED NUMBERS

G)

INDICATE CONTACT POSITIONS EVEN

THOUGH SOME POSITIONS MAY BE BLANK.

Figure 5-6.

Range Switch Detail

SCHEMATIC NOTES

1.

RANGE SWITCH SHOWN ON 0.001 VOLT RANGE.

2.

FUNCTION SWITCH SHOWN IN THE OFF POSITION.

3.

SWITCH CONNECTIONS ARE SHOWN FOR SCHEMATIC SIMPLICITY

AND MAY NOT BE ACCOMPLISHED IN THE MANNER SHOWN.

5.

4.

ALL DC VOLTAGES ARE TYPICAL VALUES.

A TOLERANCE OF ± 10%

SHOULD BE ALLOWED WHEN MEASURING THESE VOLTAGES.

W

DENOTES CHASSIS GROUND.

W

DENOTES SIGNAL GROUND (FLOATING).

*

OPTIMUM VALUE SELECTED AT FACTORY. AVERAGE VALUE

IS SHOWN AND IN SOME CASES THE PART MAY BE OMITTED.

6.

RESISTOR VALUES ARE IN OHMS AND CAPACITANCE VALUES ARE

IN MICROFARADS UNLESS OTHERWISE DESIGNATeD.

7.

- - - - - - - DENOTES ASSEMBLY.

- - - - - - - - - - - DENOTES MAIN SIGNAL PATH.

8. c==::JDENOTES FRONT PANEL MARKING.

~

DENOTES SCREWDRIVER ADJUST.

9.

~ DENOTES WIRE COLOR: COLOR CODE SAME AS RESISTOR

COLOR CODE.

FIRST NUMBER IDENTIFIES BASE COLOR.

SECOND NUMBER IDENTIFIES WIDER STRIP, THIRD

NUMBER IDENTIFIES NARROWER STRIP.

(e.

g.

~

= WHITE. RED. YELLOW.)

A 2 T 1 - I - - - J ! t - - - - . . .

~----~----J2

-13V TO A I - 2

BT4(~)----L

A2R41----.:L

- - - - - , B A R E , - - - - - . /

S2B(F)

""",__ --~---R45 b - - -

A 2CRIO b - - - B T I ( + )

S-+13V TO AI

52

I

FUNCTION

I

M I ( - ) - - - - J -

' - - - - - - ,BAR!:., - - f - - - - - '

4038-8-1317

S2A(F)

- - - - - - - - & , - - -

BT3H

~--6.5V

TO AI

~---A2R44

~----

~----MI(+)

(F) (F)

A B

1.

SWITCH WAFERS VIEWED FROM BOTTOM

FRONT OF INSTRUMENT.

2.

SWITCH SHOWN IN ~ POSITION.

3.

CIRCLED NUMBERS G) INDICATE CONTACT

POSITIONS EVEN THOUGH SOME POSITIONS

MAY BE BLANK.

Figure 5-7.

Function Switch Detail

Section V Mode1403B

IINPUTI

::-....;J..

I_ _

~

!

~ :r~

I I-Q,

SHORTING

STRAP

~

[i]~11

W

I

RANGE I o

:.°6°ci ill :?~5

Q)

.:~l>

@ :~~

® -~o

® ':I~ o

6

®

+~o

®

~~o

@ 13<&

®

~~<&

@ ;~g

IRANGEI

P/O 51

0

~I~R-(~A~

- - - - - - - - - - - - - - - - - -

---------1 oill o(i)

I

I o@

-13V o® o@

0

0 o®

®

@

I R7

34K

R8

82K

C9

200

-13V

+

AC FEEDBACK

~

(see Para. 4-9)

1

®

®

I

RANGE

I

I

R9

150K

C7 RII

-13V

I

I

CRi

~to0liil,-C>OP/

.....

FI

0-S<lI~.1/Y'16

AMP l 4. . . . .I.,..K"-........

--l F

3

. .

AR;IT;N~~3;-~

-

---'1 ill

~ ~I

R:

82M 4700

3

I

I

I '

2

RIO

2M

I

4

AC FEEDBACK

(see Para. 4-10).

CIO

10

r--------l

I

I

02

. I,.,

..=....:..:I

. . .

---"!~

CI2

200 3419

RI8

I

I

RI9

1081

R2/

341.9

I

RI7

1080

R20

634

®

Q)

I

I

R 4

2 K

I ~b1

~I

I , Ht--~+-i

-13V

R22

920 @

I

I

®o

~/

C 6 * r :

22PF~ ill

0

Q)o

@o

®o

@o

0

0

IRANGEI

0P/0 51

CAL .IV

300KC

~

R2

19./K

I ~

0

.

CAL.,

300t<t:

~I

\V~o

I

@

Tg~OPF ~~ ~~

W ~~5 ~~~

~

T

W

i

2bPF

I

I

@

®

I

~--------~

FROM 97

PWR SOURCE =,:,J1(f-- -13V

VIA 52 {

I

I

I .,,/ASSEMBLY

~

MTO SCREWS

921

(f--+13V

961 T~6=J I

I

I

I

I

I

R23

158.1

'\~

~

~~

0

®

&La

~

@

-<J

@

I

I

I l

I

I

I

CAL IMV

2MC

~

_ _

~

NEG DC

!FEEDBACf<

-13V

R46

4700

-13V

3

R34

8200

R35

390

~03K6

R42

220

18

FUNCTION

I

FUNCTION

I

0

-_-~~}....:6=3::..---O-...L.,~:!.-t-

.......

~

~

~

._ .. -

;U;

~M;L~

(403B-65;) - - - - - - - - - - - - - - - -

R44

220K

BATT

TEST CAL R45

~

2 5 0 K j

I

I

IFUNCTIONI

P/O S2B(F)

. . . - - - - : : 0 - - 0

0 ill

BATT.

OFF o TEST~ON

(j)

12."."".} ~

,-

: 00

P/O S2A(F)

_---J..---

0

: ill (ft

Q)

I

I

I

I

I

I IQ>

WI

J2 oill

Q)

21

A2R38

33K

R47

150

R37

300

07

I

I

I

I

1--~20-~

7

II

~

R4" ill

3900

BTl _

6.5V

Q) 1 c;=-

+13V

BT2 _

6.5vl~

Bn _

6.5V-

I o o ill

16

(i)

~-6.5V

3 o

403B-E-131~B l - - - - - - - -......- -......

- - - - - - - - - - . ; . - 4 o J l

COPYRIGHT 1962 BY HEWLETT -PACKARD COMPANY l

R41

33K

~-------j

I

I

+

MI

Figure 5-8.

Schermtic Diagram

5-9/5-10

Hewlett-Packard Model 403B

Transistorized AC Voltmeter serial No.

DESCRIPTION l.

CALIBRATION

A.

RANGE ACCURACY

300V

100V

30V

10V

3V

1V

0.3V

0.1 V

0.03V

0.01 V

0.003V

0.001 V

2.

HIGH FREQUENCY RESPONSE

A.

0.001 RANGE

500 kHz

1 MHz

2 MHz

B.

0.003 RANGE

500 kHz

1 MHz

2 MHz

C.

0.01 RANGE

500 kHz

1 MHz

2 MHz

D.

0.03 RANGE

500 kHz

1 MHz

2 MHz

E.

0.1 RANGE

500 kHz

1 MHz

2 MHz

F.

3 V RANGE

500 kHz

1 MHz

2 MHz

G.

10 V RANGE

300 kHz

PERFORMANCE CHECK TEST CARD

Tests Performed by

Date

PAR.

O.

CHECK

Full scale

Full scale

Full scale

Full scale

±

±

±

±

2%

2%

Full scale ± 2%

Full scale ± 2%

2%

Full scale ± 2%

Full scale ± 2%

Full scale ± 2%

Full scale ± 2%

Full scale ± 2%

Full scale ± 2%

2%

0.94 Full scale

0.94 Full scale

0.94 Full scale

0.94 Full scale ± 2%

0.94 Full scale ± 2%

0.94 Full scale ± 5%

0.94 Full scale

O.

94 Full scale

94 Full scale

0.94 Full scale

±

±

±

±

2%

2%

5%

2%

O.

94 Full scale ± 2%

0.94 Full scale ± 5%

0.94 Full scale

0.94 Full scale ± 2%

O.

94 Full scale ± 5%

0.94 Full scale

±

±

2%

2%

O.

94 Full scale ± 2%

O.

94 Full scale ± 5%

0.94 Full scale

±

±

±

±

2%

2%

5%

2%

3.

LOW FREQUENCY RESPONSE

A.

0.001 RANGE

10 cps

B.

0.003 RANGE

10 cps

O.

O.

94 Full scale

94 Full scale

±

±

2%

2%

Hewlett-Packard Model 403B

Transistorized AC Voltmeter

Serial No.

PERFORMANCE CHECK TEST CARD (Cont'd)

Tests performed by

Date

PAR.

DESCRIPTION

3.

LOW FREQUENCY RESPONSE (Cont'd)

C.

0.01 RANGE

10 Hz

D.

0.03 RANGE

10 Hz

E.

O~ 1 RANGE

10 cps

F.

3 RANGE

10 cps

4.

NOISE CHECK

A.

BATTERY OPERATION

B.

AC OPERATION

5.

INPUT RESISTANCE

CHECK

0.94 Full scale ± 2%

O.

94 Full scale ± 2%

0.94 Full scale ± 2%

O.

<

<

94 Full scale ± 2%

3% Deflection

8% Deflection

9.0 to 9.5 mV

Model403B section VI

SECTION

REPLACEABLE

VI

PARTS

6-1.

INTRODUCTION.

6-2.

This section contains information for ordering replacement parts.

Table 6-1 lists parts in. alphameric order of their reference designators and indicates the description, -hp- part number of each part, together with any applicable notes, and provides the following: a.

Total quantity used in the instrument (TQ 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 below.) c.

Typical manufacturer of the part in a fivedigit code.

(see Appendix A for list of manufacturers. ) d.

Manufacturer's part number.

6-3.

Miscellaneous parts are listed at the end of

Table 6-1.

6-4.

ORDERING INFORMATION.

6-5.

To obtain replacement parts, address order or inquiry to your local Hewlett-Packard Field Office.

(see Appendix B for list of office locations.) Identify parts by their Hewlett-Packard part numbers. Include instrument model and serial numbers.

6-6.

NON-LISTED PARTS.

6-7.

To obtain a part that is not listed, include: a.

Instrument model number.

b.

Instrument serial number.

c.

Description of the part.

d.

Function and location of the part.

Ag

AI

.sil_

eluminum

A . • . . . . . . . . . . . • . . . . . . . . . . . . . • ernpefels)

Au . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . gold

C . . . . . . . . . . . . . . . . . . . . • . . . . . . . c:epecitor cer ...................•........ .c...

.."ic coef coefficient corn • • • • • • • • • • • • • • • • • • • • • • • • • • • COf'nlT'On comp ........••......•...... composition conn connection dep

OPOT

OPST deposi ted double-pole double·throw double-pole sinllle·throw elect electrolytic encep .•...•..•...•.•••...•• encepaJleted

F .f.edls)

FET .....••......... fiald effect trensistor fxd . . . . . . . . • . . . . . . . . . . . . . . . . . . . . .fixed

GeAs gellium ._ids

GHz . . . . . . • . . . . . . . .

gigehertz 10+9 hertz gd . . . . . . . . • . . . . . . . . . . . . . . . . • .

~.d(edl

Ge . . . . . . . . • . . . . . . . . . . . . . . . . . gtrmenium end ground(ed)

H . . . . . . . . . . . . . . . . • . . . . . . . . . . .

henry(ies)

Hg mercury

ABBREVIATIONS

Hz . . . . . . . . . . . ..

hertz (cyele(s) per oecond) NPO

10 impg inside di t .

ns impnlllneted nsr

(..-0 negetive positive ..-0

...".,.eture coefficient) nenooecondls) - 10-9 seconds not leJ*"etltly replec:eeble l incd .incendncent

ins . . . . . . . . . . • . . . . . . . . . . . . . in..letion(ed) n kn kilohm(s) - 10+3 ohms ohm(s)

~::::::::::::::::

:

:~.~:u~=~: kHz kilohertz - 10+3 hertz p •.••..••••...•..•••••••.•••••••• peek inductor lin . . . . . . . . . • . . . . . . . . . . . . . . . . line.

teper log ....................• logerithmic teper

~:::::::::::::::::::::::.~=:~ pF picof.ed(s) 10-12 f.eds

piv . . • . . . . . . . . . . . . . . . .

peek in_ _ voltege plo pert 01 rnA

MHz

Mn met tim mlr milliempere(s) - 10-3 _ r e s megehertz - 10+6 hertz megohm(s)· 10+6 ohms

met"

film menufecturer rns •...•..•..••••.•........•.

millisecond pol . • . • • • . • . • . • • • • • • . . • • • . . .

poly position(s) polystyrene pot . . . . . . . . . . . • . . . . . . . . . . potentiometer

Pi> peek·to-peek ppm prec peru per million precision (tempereture coeffie(lt, mtg : '.' ~~nting mV . . . . . . • . . . . . . . . mlillvolt(s) - 10 volts

J.IF ......•.......•.•.....•• microf.ed(s)

/.II

IN microsecond(s) microvolt(s) - 10-6 volts

R

Rh long term stebility end/or toler....,.) resistor rhodium my Myl.® rrTlS. • . . . . . . . • . . . . . • . . . . • root.",.....-squ• • rot rotary nA

Nt::

Ne nenoempere(s)-10-9 emperes normelly closed s. ............................• neon oect

Ienium section (s)

NO . . . . • . . . . . . . . • . . . . . . . . normelly open Si . . . . . . . . . . . • . . . . . . • . . . . . . . . . . .silicon

II

SPOT

SPST

' II ide single-pole double-throw single-pole single-throw

Te

TC tentelum tempereture coefficient

Ti02 titenium dioxide tog . . . . . . . . . • . . . . . . . . . . . . . . . . . . . toggle to! .........•...............•.

toler....,.

trim , trim"....

TSTR trensistor

V

VIICW • • • • •

_

¥dew volt(s) alterneting current working volteglt v.ieble

direct current working volteglt w wett(s)

wI .......... .•...................

with wiv ..............• Working in_. volt.

wlo without

YtIW • • • • • • • • • • • • • • • • • • • • • • • • • wirewoun<:t

. . .

.....optimum velue .I«ted at fectory,

_ . velue shown (pert mey be omitted) no stenderd type number _gned

"ected or speciel type

®

Dupont de Nemours

DECIMAL MULTIPLIERS

....elix

Symbols Multiplier ....elix

Symbols Multiplier

A

8 mbly motor

BT . . . . . . . . . . . . . . . . . • . . . . . . . . . . .

bettery

C cepecitor

CR . . . . . . • . . . . . . . . . . . . . • . . . . . . . . diode

Ol deley line

OS . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . Iemp

E

F mioc alectronic pert

','" .•........•.............. fu.

tere gige rnege kilo hecto deke deci

T

G

M or Meg

Kor k h da d

1012

109

106

103

102

10

10.1

centi milli micro pico femto etto

IJ.

10-2

10.3

10-6

10.9

10.12

10-15

10.18

Fl

HR

DESIGNATORS filter a heater OCR transistor transistor-<liode

IC integreted circuit R resistOf

J .....••••....•.•................

jeck RT . . . . . . . . . . . . . • . . . . . . . . . . . thermistor

K . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . relay S l . . . . . . . . . . . . . . • . . . . . . . . . . . . . . inductor T

M . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . meter T8

.-itch transformer terminer bo.d

MP ....••.....•.•....... mechenicel pert TC . . . . . . • . . . . . . . . . . . . . . . . . thermocouple

P plug TP .....••......••............ test point

STD-8·2734

TS

U

V

W

X t.minel

strip microcircuit vecuum tube, neon bulb.photocell, atc.

cellIe lOCket

XOS Iempholder

XF . . . . . . . . . • . . . . . . . . . . . . . . . fu.holder

Y ...•..••.•.••.......•.•.•.•.•• crystel

Z .

network

6-1

section VI

REFERENCE

DESIGNATOR

Al

-hp-

PART NO.

403B-65A

A2 403B-65B

A3 403B-65C

BTl, 2, 3, 4

Cl

C2, C3

C4

C5

*C6

C7

C8

C9

CI0

Cll

,

C12

C13

C14

*C15

C16

C17, C18

C19

C20

C21

CR1, CR2

CR3, CR4

CR5 thru

CR8

CR9

CRI0

DSl

Fl

Jl

J2

Ml

Ql,Q2, Q3, Q5

Q4, Q6

1510-0008

1510-0009

5060-0626

0340-0090

1251-2357

1120-0315

1120-0316

1853-0020

1854-0071

1420-0015

0170-0033

01~0-0003

0140-0151

0140-0178

0140-0145

0180~100

0160-0205

0180-0060

0180-0059

0180-0064

0180-0104

0180-0063

0180-0039

0140-0176

0130-0017

0180-0058

0180-0033

0180-0150

0180-0149

...

1901-0044

1901~535

1901-0025

1902-0074

1901-0025

1450-0419

2110-0011

Model403B

Table 6-1 Replaceable Parts (Cont'd)

TQ DESCRIPTION MFR.

MFR. PART NO.

Assembly, printed circuit: includes,

C7 thru C20 Ql thru Q6

CRl thru CR4 R6 thru R16

R24 thru R36

R40

R46

1

2

1

1

1

Assembly, resistor board: includes,

C21 R37 thru R39

CR5 thru CRI0 R41

Tl

Q7

R44

R45

R47

Assembly, resistor board: includes,

C2 thru C5 Rl thru R5

4 Battery, Nickel Cadmium 6. 5 Vnom. 225 mAh 88220 6.0V/225B

C: fxd O. 18 /-LF ±10% 600 vdcw

C: var cer 1. 5-7 pF ±10% 500 vdcw

C: fxd mica 820 pF ±2% 300 vdcw

C: fxd mica 560 pF ±2% 300 vdcw

C: fxd mica 22 pF ±5% 500 vdcw

1 C: fxd elect 4.

7 /-L F .±10% 35 vdcw

1 C: fxd mica 10 pF ±5% 500 vdcw

1 C: fxd elect 200 /-LF +100% -10% 3 vdcw

1 C: fxd elect 10 /-L F 10 vdcw

1 C: fxd elect 35 /-LF -+,100% -10% 3 vdcw

1 C: fxd elect 200 /-LF 15 vdcw

1 C: fxd elect 500 /-LF +100% -10% 3 vdcw

1 C: fxd elect 100 /-L F 12 vdcw

1 C: fxd mica 100 pF ±2% 300 vdcw

1 C: var cer 8-50 pF 500 vdcw

2 C: fxd elect 50 /-LF +100% -10% 25 vdcw

1 C: fxd elect 50 /-L F 6 vdcw

1 C: fxd elect 1200 /-LF 10 vdcw

1 C: fxd elect 65 /-L F 60 vdcw

09134 Type 27

72982 503-000-COPO-I0R

04062 DM15F821G

04062 DM15F561G

04062 DM15C220J

56289 150D475X9035B2-DY~

04062 DM15C220J

56289 30D116Al

56289 30D182Al

56289 30D122Al

56289

56289

56289

04062

72982

56289

56289

56289

56289

30D174Al

30D120Al

30D154Al

557-019-U2 P034R

30D186Al

30D133Al

Type 340

Type 30D

2

2

5

Diode: Si 20 mA/+IV 10 mA/-I0V/50 wiv

2 pF

Diode: hybrid hot carrier

Diode: Si 100 rnA 100 wiv 2 pF

1 Diode: breakdown 7.

15V ±5% 400 mW

Diode: Si 100 rnA 100 wiv 2 pF

73293 HD

-hp':'

03877 SG-817

07910 CE 35664

03877 SG-817

72765 599-237 white

1 Indicator: neon

1 Fuse, 1/16 amp 250 V maximum 5.4 ohm

3 Terminals: three female

1 Assembly binding post: red

1 Assembly binding post: black

1 Assembly binding post: black with strap

1 Insulator: B. P. double keyed

1 Connector: ac power

75915 #312.062

-hp-

-hp-

-hp-

-hp-

82389 EAC-301

4

2

1 Meter: 0-100 /-LA dc

1 Meter: 0-100 /-LA dc DB Scale (option 01)

TSTR: Si PNP

TSTR: Si NPN

-hp-

-hp-

01295 SKA1123

01295 SKA1124

6-2

Model403B

REFERENCE

DESIGNATOR

-hp-

PART NO.

S3

1853-0016

0727-0287

0727-0443

2100-0390

0727-0056

0687-8251

0698-4493

0758-0022

0687-1541

0687-4721

0693-1021

0687-5621

0687-1221

0687-1531

0687-6831

0687-6821

0727-0103

403B-26A

403B-26B

0727-0084

403B-26C

0727-0096

403B-26D

0758-0074

0758-0076

0758-0073

0687-1031

0727-0017

2100-0240

0727-0050

403A-26G

0687-1031

2100-0154

0758-0048

0687-3911

0687-1031

0686-3015

0687-3331

2100-0391

0687-5621

0687-3331

0687-2211

0687-3921

0687-2241

2100-0144

0687-4721

0758-0007

403B-19W

403B-19A

7123-0101

3101-1234

Q7

Rl

R2

R3, R4

R5

*R6

R7

R8

R9

RIO

R11

R12

R13

R14

R15

R16

R37

R38

R39

R40

R41

R42

R43

R44

R45

R46

R47

Sl

S2

R17

R18

R19

R20

R21

R22

R23

R24

R25

R26

R27

R28

R29

R30

R31

R32

R33

R34

R35

R36

Section VI

Table 6-1.

Replaceable Parts (Cont'd)

TQ DESCRIPTION MFR.

MFR. PART NO.

1 TSTR: PNP 2N3638 01295 2N3638

1 R: fxd comp 2M ±1% 1/2 W

1 R: fxd comp 19. lkn ±1% 1/2 W

1 R: var comp dual 2k and 6k ohms 1-1/4 W

1 R: fxd carbon flm 216 ohms ±1/2% 1/2 W

1 R: fxd comp 8. 2M ±10% 1/2 W

19701 DC 1/2 CR5

19701 DC 1/2 CR5

71590 Series Type 73-2

19701 DC 1/2 AR5

01121 EB 825J.

1 R: fxd flm 34 kn ± 1% 1/8 W

1 R: fxd comp 82kn ±5% 1/2 W

1 R: fxd comp 150kn ±10% 1/2 W

2 R: fxd comp 4. 7kn ±10% 1/2 W

1 R: fxd comp lkn ±10% 1/2 W

2 R: fxd comp 5. 6kn ±10% 1/2 W

1 R: fxd comp 1. 2kn ±10% 1/2 W

1 R: fxd comp 15kn ±10% 1/2 W

1 R: fxd comp 68kn ±10% 1/2 W

1 R: fxd comp 6. 8kn ±10% 1/2 W

1 R: fxd carbon flm 1080n ±1% 1/2 W

1 R: fxd ww 3. 41kn ±O. 2% 1/2 W

1 R: fxd ww 1. 081kn ±O. 2% 1/2 W

1 R: fxd carbon flm 634n ±1% 1/2 W

1 R: fxd ww 341. 9n ±O. 2% 1/2 W

1 R: fxd carbon flm 920n ±1% 1/2 W

1 R: fxd ww 158. In ±O. 2% 1/2 W

1 R: fxd met oxide 27kn ±5% 1/2 W

1 R: fxd met oxide 68kn ±5% 1/2 W

1 R: fxd met oxide 24kn ±5% 1/2 W

2 R: fxd comp 10kn ±10% 1/2 W

1 R: fxd carbon flm 37. 35n ±1/2% 1/2 W

1 R: var ww 50n ±20% 1 W

1 R: fxd carbon flm 180n ±1% 1/2 W

1 R: fxd ww 2 sect 30n

91637 CMF-l/I0-32 T-l

07115 C20

01121 EB 1541

01121 EB4721

01121 HB 1021

01121 EB 5621

01121 EB 1221

01121 EB 1531

01121 EB 6831

01121 EB 6821

19701 DC 1/2 CR5

-hp-

-hp-

19701 DC 1/2 CR5

-hp-

19701 DC 1/2 CR5

-hp-

07115 C5

07115 C5

07115 C5

01121 EB 1031

19701 DC 1/2 CR5

11236 Series 110

19701 DC 1/2 CR5

-hp-

R: fxd comp 10kn ±10% 1/2 W

1 R: var comp lkn ±30% 3/10 W

1 R: fxd met oxide 8. 2kn :lr5% 1/2 W

1 R: fxd comp 390n ±10% 1/2 W

R: fxd comp 10kn ±10% 1/2 W

1 R: fxd comp 300n ±5% 1/2 W

2 R: fxd comp 33kn ±10% 1/2 W

1 R: var ww lkn ±20% 1. 25 W

R: fxd comp 5. 6kn ±10% 1/2 W

R: fxd comp 33kn ±10% 1/2 W

01121 EB 1031

11237 UPE70 C5

07115 C5

01121 EB 3911

01121 EB 1031

01121 EB 3015

01121 EB 3331

11236 Series 110

01121 EB 5621

01121 EB 3331

1 R: fxd comp 220n ±10% 1/2 W

1 R: fxd comp 3. 9kn ±10% 1/2 W

1 R: fxd comp 220kn ±10% 1/2 W

1 R: var comp 250kn ±30% 0.2 W

R: fxd comp 4. 7kn ±10% 1/2 W

1 R: fxd met oxide 150n ±5% 1/2 W

1 Assembly RANGE switch 3 sect 12 pos includes: C2 thru C6, A3, and R17 thru'R23

1 Assembly FUNCTION switch 2 sect 3 pos includes: R42 and R43

1 Washer fluorescent irrlicator for use with

Function Switch Knob

1 Switch-Slide: DPDT 115-230V

01121 EB 2211

01121 EB 3921

01121 EB 2241

11237 UPE70

01121 EB 4721

07115 C5

-hp-

-hp-

-hp-

82389 11A-1242A

6-3

L . . . . -_ _

section VI

REFERE CE

DESIGNATOR

Tl

WI

XFl

-hp-

PART NO.

9100-0172

8120-1348

1400-0008

00403-90008

Model403B

Table 6-1.

Replaceable Parts (Cont'd)

TQ DESCRIPTION MFR.

MFR.

PART NO.

1

1

Transformer

Assembly cable power

98734 6-2249

70903 KHS-7041

1 Holder fuse 1/2" wide 3/16" thick 1-5/8" long 75915 3510-11

MISCELLANEOUS

·1 Operating and service Manual -hp-

..

,-

6-4

Model403B

Section VI

Table 6-2.

Mechanical Parts

Cabinet Parts

CD

0[)::

> >

>

Item

Number

9

10

7

8

5

6

1

2

3

4

~ Stock No.

5060-0702

1490-0031

5040-0700

5060-0727

5020-0700

5000-8563

5060-8547

5000-8564

00403-00202

00403-00203

Description

Frame Assembly

Stand: Tilt

Hinge

Foot Assembly

Spacer

Cover: Side

Cover Assembly: Top

Cover Assembly: Bottom

Panel: Rear

Panel: Front

(See Figure 6-1. )

Note

6-5

Section VI Model403B

Table 6-2.

Mechanical Parts (Cont'd)

44

45

46

47

48

49

23

24

25

26

27

19

20

21

22

15

16

17

18

9

10

11

12

13

14

28

29

30

31

32

33

34

39

40

41

42

43

35

36

37

38

50

51

52

53

54

NUMBER ON

ILLUSTRATION

ON FIGUa,E 6-1

1

2

3

4

5

6

7

8

55

56

57

NAME/DESIGNATOR STOCK NUMBER

Indicator, Neon

Retainer clip

Insulation, vinyl tubing (specify 1" length)

Knob, bar w/ indicator, black

Special washer 3/8 inch OD x 0.26 inch ID

Wafer, fluorescent indicator for use with Function Switch Knob

Panel, front

Meter, 0-100 J1.A

dc (403B) or

Meter, 0-100 J1.A

dc, DB Scale (Option 01)

3/8" - 32 x 1/2" nut, hex.

AC shield

Vertical shield

Bushing, threaded 3/8 - 32

6.32 x 5/16" nut, hex. w/lock

Assembly FUNCTION Switch: 2 sect, 3 pos

Screw 6-32 x 3/8 flat head phillips drive

Screw 6-32 x 3/8 flat head slot drive

Cover 1/3 module 8 inch deep, top

Assembly, printed circuit

Battery holder

Screw, 6-32 x 1-1/2 binding head with lock

Screw 6-32 x 3/8 pan head

Not assigned

Rear panel, 1/3 module, 1/2 recess

Side frame 6 x 8 sub-module

Switch shield

Side cover, 6 x 8, SM

Same as 15

Bottom cover 1/3 module, 8 inch DP

Assembly RANGE Switch: 3 sect, 12 pos

Same as 15

6. 32 x 5/16" nut

#6 split lock, SS same as 16

Spacer No. 6 x 5/16

318" ID x 5/8" OD flat washer

#6 internal lock washer

3/8" internal lock (heavy) washer

#6 solder lug "L"

Tinnerman retainers same as 9

Same as 13

Coupler, shaft 1/4"

#10 solder lug same as 43

#10 internal-external lock washer

#10 internal lock washer

Insulator B. P. double without locating key

Hinge stand, third mod. tilt

Foot assembly, third mod.

Assembly, dial

Insulator, binding post: double keyed

Spacer binding post

Assembly, binding post: black w/strap

Assembly, binding post: red

Assembly, binding post: black

Meter trim, third mod.

Battery, nickel cadmium, 6.25 V nom. 225 mAh

Assembly, resistor board

See DS1, table 6-1

0510-0123

0890-0057

0370-0087

3050-0014

7123-0101

00403-00203

See M1, Table 6-1

2950-0001

403B-6D

403B-6A

1410-0003

2420-0001

See S2, Table 6-1

2370-0013

2370-0002

5060-8547

See A1, Table 6-1

5040-0615

2370-0010

2390-0010

00403-00202

5060-0702

403B-6B

5000-8563

5000-8ij69

See Sl, Table 6-1

2420-0002

2190-0n06

0380-0007

3050-0067

2190-0007

2190-0022

0360~042

0590-0039

5020-0237

0360-0007

2190-0028

2190-0011

0340-0086

5040-0700

1490-0031

5060-0727

403B-99

0340-0090

0400-0084

See J1, Table 6-1

5020-6852

See BTl, 2,3,4, Table 6-1

See A3, Table 6-1

6-6

Model403B Section VI

Figure 6-1.

Exploded V· lew

6-7

Appendix A

CODE LIST OF MANUFACTURERS

The following code numbers are from the Federal Supply Code for Manufacturers Cataloging Handbooks H4-1

(Name to Code) and H4-2 (Code to Name) and their latest supplements. The date of revision and the date of the supplements used appear at the bottom of each page. Alphabetical codes have been arbitrarily assigned to suppliers not appearing in the H4 Handbooks.

Model403B

Cod.

No.

Manufoctur~

Address

00000 U. S. A. Common

00136 MCCoy Electronics

00213 Saee Electronics Corp.

00287 Cemco Inc.

00334 Humidial

00348 Microtron Co., Inc.

00373 Garlock Inc.

Any supplier of U. S.

Mount Holly Sprines, Pa.

Rochester, N. Y.

Danielson, Conn.

Colton, Calif.

Valley Stream, N. Y.

Cherry Hill, N. J.

00656 Aerovox Corp.

00779 Amp. Inc.

New Bedford, Mass.

Harrisbure, Pa.

00781 Amrafl Radio Corp.

Boonton, N. J.

00815 Norlhern Eneineerine Laboratories, Inc.

Burlineton, Wis.

00853 Saneamo Electric Co., Pickens Div.

00866 Goe Eneineerine Co.

00891 Carl L Holmes Corp.

Pickens, S. C.

City of Industry, Cal.

Los Aneeles, Calif.

00929 Microlab Inc.

Livineston, N. J.

01002 General Electric Co., Capacitor Dept.

Hudson Falls, N. Y.

01009

01121

01255

01281

01295

01349

01589

01930

01961

02114

02116

02286

02660

02735

Alden Products Co.

Allen Bradley Co.

Litton Industries, Inc.

TRW Semiconductors, Inc.

Texas Instruments, Inc.,

Transistor Products Div.

The Alliance Mfe. Co.

PacifiC Relays, Inc.

Amerock Corp.

Pulse Eneinetrine Co.

Ferroxcube Corp. of America

Wheelock Siena Is, Inc.

Cole Rubber and Plastics Inc.

Brockton, Mass.

Milwaukee, Wis.

Beverly Hills, Calif.

Amphenol·Borg Electronics Corp.

Lawndale, Calif.

Dallas, Texas

Alliance, Ohio

Van Nuys, Calif.

Rockford, III.

Santa Clara, Calif.

Saueerties, N. Y.

Lone Branch, N. J.

Sunnyvale, Calif.

Chicago, III.

Radio Corp. of America, Semiconductor

02771 and Materials Div.

Vocallne Co. of America, Inc.

Somerville, N. J.

Old Saybrook, Conn.

02777 Hopkins Engineering Co.

03508 G. E. Sem Iconductor Prod.

03705 Apex Machine & Tool Co.

San Fernando, Calif.

Dept.

Syracuse, N. Y.

Dayton, Ohio

03797 Eldema Corp.

03818 Parker Seal Co.

03877

03888

Transitron Electric Corp.

Pyrofllm Resistor Co., Inc.

Compton, Calif.

Los Angeles, Calif.

Wakefield, Mass.

Ce ar Knolls, N.

J.

03954 Singer Co., Diehl Div.

Finderne Plant Sumerville, N. J.

04009 Arrow, Hart and Hegeman Elect. Co.

Hartford, Conn.

04013 Taurus Corp.

04062 Arco Electronic Inc.

04222 HI·Q DiVision of Aerovox

04354 PreCIsion Paper Tube Co.

Lambertville, N. J.

Great Neck, N. Y.

Myrtle Beach, S. C.

Wheeling, III.

04404 Dymec DiVision of Hewlett·Packard Co.

Palo Alto, Calif.

04651 Sylvania Electric Products, Microwave

Device Dlv.

Mountain View, Calif.

04713 Motorola, Inc., Semiconductor Prod. Div.

Phoenix, Arizona

04732 Filtron Co., Inc. Western Div.

Culver City, Calif.

04773 Automatic Electrrc Co.

04796 Sequoia Wire Co.

04811 PreciSion COil Sprine Co.

04870 P. M. Motor Company

04919 Component Mfg. Service Co.

Northlake, III.

Redwood City, Calif.

EI Monte, Calif.

Westchester', III.

W. Brideewater, Mass.

05006 Twentieth Century Plastics, Inc.

Los Angeles, Calif.

05277 Wesllnghouse Electric Corp.

Seml·Conductor Dept.

Younewood, Pa.

Code

No.

Manufacturer Address

05347

05397

UItronix, Inc.

San Mateo, Calif.

Union Carbide Corp., Linde Div., Kemet Dept.

05574

05593

05616

05624

05728

VikIng Ind. Inc.

IlIumltronlc Engineering Co.

Cosmo Plastic

(c/o Electrical Spec. Co.)

Cleveland, Ohio

Canoga Park, Calif.

Sunnyvale, Calif.

Barber Colman Co.

Tiffen Optical Co.

Cleveland, Ohio

Rockford, III.

Roslyn Heights, Long Island, N. Y.

Metro·Tel Corp.

Stewart Engineering Co.

Westbury, N. Y.

Santa Cruz, Calif.

05729

05783

05820

06004

. 06090

06175

06402

06540

Wakefield Engineering Inc.

Wakefield, Mass.

Bassick Co., Div. of Stewart Warner Corp.

Raychem Corp.

Bausch and Lomb Optical Co.

Bridgeport, Conn.

Redwood City. Calif.

Rochester, N. Y.

E. T. A. Products Co. of America

Amalom Electronic Hardware Co., Inc.

Chicago, III.

New Rochelle, N. Y.

Beede Electrical Instrument Co., Inc.

06555

06666 General Devices Co., Inc.

06751 Semcor Div. Components Inc.

06812 Torrington Mfg. Co., West Div.

06980

07088

07126

07137

07138

07149

07233

07256

07261

07263

07322

07387

07397

Penacook, N. H.

Indianapolis, Ind.

Phoenix, Ariz.

Varian Assoc. Eimac Dlv.

Kelvin Electric Co.

Dlgltran Co.

Transistor Electronics Corp.

Van Nuys, Calif.

San Carlos, Calif.

Van Nuys, Calif.

Pasadena, ,Calif.

Minneapolis, Minn.

Westinghouse Electric Corp.

Electronic Tube Div.

Filmohm Corp.

Cinch·Graphik Co.

SilIcon Transistor Corp.

Elmira, N. Y.

New York, N. Y.

City of Industry, Calif.

Carle Place, N. Y.

Avnet Corp.

Fallchlld Camera & Inst. Corp.

Semiconductor Div.

Culver City, Calif.

Mountain View, Calif.

Minnesota Rubber Co.

Blltcher Corp., The

Minneapolis, Minn.

Monterey Park, Calif.

07700

07829

07910

07933

Sylvania Elect. Prod. Inc., Mt. View Operations

Technical Wire Products Inc.

Mountain View, Calif.

Cranlord, N. J.

BodIne Elect. Co.

Continental Device Corp.

Chicago, III.

Hawthorne, Calif.

07980

08145

08289

08358

Raytheon Mfg. Co ..

Semiconductor Dlv.

Hew lell·P ackard Co. ,

Mountain View. Calif.

Boonton Radio Div.

U. S. Engineering Co.

Blinn, Delbert Co.

Rockaway. N.

J.

Los Angeles, Calif.

Pomona, Calif.

Burgess Battery Co.

Niagara Falls, Ontario, Canada

08524

08664

08717

08718

Deutsch Fastener Corp.

Bristol Co., The

Sloan Company

Los Angeles, Calif.

Waterbury, Conn.

Sun Valley, Calif.

ITT Cannon Electric Inc., Phoenix Div.

08727 National Radio Lab. Inc.

08792 CBS ElectronIcs Semiconductor

Operations, Div of C. B. S. Inc.

PhoeniX, Arizona

Paramus, N. J.

Lowell, Mass.

08984 Mel-Rain

09026 Babcock Relays Div.

09134 Texas Capacitor Co.

09145 Tech. Ind. Inc. Atohm Elect.

09250 Eleclro Assemblies, Inc.

09569 Mallory Battery Co. of

Canada, Ltd.

Indianapolis, Ind.

Costa Mesa, Calif.

Houston, Texas

Burbank, Calif.

Chicago, III.

Toronto. Ontario, Canada

10214 General TranSistor Western Corp.

Los Angeles, Calif.

Code

No.

Manufacturer Address

10411 Ti-Tal, Inc.

10646 Carborundum Co.

Berkeley, Calif.

Niagara Falls, N. Y.

11236 CTS of Berne, Inc.

11237 Chicaeo Telephone of California, Inc.

Berne, Ind.

So. Pasadena, Calif.

11242 Bay Slate Electronics Corp.

Wallham, Mass.

11312 Teledyne Inc., Microwave Div.

Palo Alto, Calif.

11314 National Seal

11534 Duncan Electronics Inc.

Downey, Calif.

Costa Mesa, Calif.

11711 General Instrument Corp., Semiconductor

Div., Products Group Newark, N. J.

11717 Imoerral Electronic, Inc.

11870 Melabs, Inc.

12136 Philadelphia Handle Co.

12361 Grove Mfg. Co., Inc.

Buena Park, Calif.

Palo Allo, Calif.

Camden, N.J.

Shady Grove, Pa.

12514 Gullon Ind. Inc. Data System Div.

Albuquerque, N. M.

12697 Clarostat MIg. Co.

12728 Elmar Filler Corp.

12859 Nippon Electrtc Co., Ltd.

12881 Metex Electronics Corp.

12930 Della Semiconductor Inc.

12954 Dickson Electronics Corp.

13103 Thermolloy

13396 Telefunken (GmbH)

Dover, N. H.

W. Haven, Conn.

Tokyo, Japan

Clark, N.J.

Newport Beach, Calif.

Scottsdale, Arizona

Dallas, Texas

Hanover, Germany

13835 Midland-Wright Div. of Pacific Industries, Inc.

Kansas City, Kansas

14099 Sem·Tech Newbury Park, Calif.

14193 Calif. ReSistor Corp.

Santa Monica, Calif.

14298 American Components, Inc.

. Conshohocken, Pa.

14433 ITT Semiconductor, A Dlv. of Int. Telephone

& Telegraph Corp.

West Palm Beach, Fla.

14493 Hewlell·Packard Company

14655 Cornell Dublier Electric Corp.

14614 Corning Glass Works

14752 Electro Cube Inc.

14960 Williams Mfg. Co.

15203 Webster Electronics Co.

15287 SClonlcs Corp.

152ql Adjustable BUShing Co.

15558 Micron Electronics

Loveland, Colo.

Newark, N. J.

Corning, N. Y.

San Gabriel, Calif.

San Jose, Calif.

New York, N. Y.

Northridge. Calif.

N. Hollywood, Calif.

Garden City, Long Island, N. Y.

18324

18476

18486

18583

18612

18873

18911

19315

16758

17109

17474

17675

17745

17870

18042

18083

15566 Amprobe lnst. Corp.

15631 Cabletronlcs

Lynbrook, N. Y.

Costa Mesa, Calif.

15772 Twentieth Century Coil Spring Co.

Santa Clara, Calif.

15801

15818

16037

16179

16352

16688

Fenwal Elect. Inc.

Amelco Inc.

Spruce Pine Mica Co.

Omni-Spectra Inc.

Computer Diode Corp.

Ideal P,ec. Meter Co., Inc.

Framingham. Mass.

Mt. View, Calif.

Spruce Pine, N. C.

Detroit, III.

Lodi, N. J.

De Jur Meter D,v.

Delco RadiO Dlv. of G.M. Corp.

Brooklyn, N. Y.

Kokoma, Ind.

Thermonet,cs Inc.

Tranex Company

HamlIn Metal Products Corp.

Angstrohm Prec. Inc.

McGraw-Edison Co.

Power DeSign Paclfrc Inc.

Canoga Park, Calif.

Mountain View, Calif.

Akron, OhiO

No. Hollywood, Calif.

Manchester, N. H.

Clevlte Corp., Semiconductor Div.

Palo Alto, Calif.

Signetics Corp.

Ty·Car Mfg. Co., Inc.

TRW Elect. Compo Dlv.

Curlis Instrument, Inc.

Vlshay Intertechnology. Inc.

LI. DuPont and Co., Inc.

Durant Mfg. Co.

Palo Alia, Calif.

Sunnyvale, Calif.

Holliston, Mass.

Des Plaines, III.

Mt. Kisco. N. Y.

Malvern, Pa.

Wilmington, Del.

Milwaukee, Wis.

The BendiX Corp., NaVigation & Control Div.

Teterboro, N. J.

00015-45

ReVised: Aprrl, 1968

From: FSC.

H4-1

H4-2

Handbook Supplement.

Dated AUGUST 1966

Dated NOV.

1962

Mode1403B Appendix A

CODE LIST OF MANUFACTURERS (Cont'd)

Code

No.

Manufacturer

Address

19500 Thomas A. Edison Industries, Div. of

McGraw·Edison Co.

West Orange, N. J.

19589 Concoa

19644 LRC Electronics

19701 Electra Mfg. Co.

20183 General Atronics Corp.

Baldwin Park, Calif.

Horseheads, N. Y.

Independence, Kansas

Philadelphia, Pa.

21226 Executone, Inc.

21335 Fafnll Bearing Co., The

Long Island City, N. Y.

New Britain, Conn.

21520 Fansteel Metallurgical Corp.

N. Chicago, III.

23783 Blltish Radio Electronics Ltd.

Washington, D. C.

24455 G. E. Lamp Division

Nela Park, Cleveland, Ohio

24655 General Radio Co.

24681 Memcor Inc., Compo Div.

West Concord, Mass.

Huntington, Ind.

26365 Gries Reproducer Corp.

New Rochelle, N. Y.

26462 Grobet File Co. of America, Inc.

Carlstadt, N. J.

26851 Compac/Hollister Co.

26992 Hamilton Watch Co.

28480 Hewlelt-Packard Co.

28520 Heyman Mfg. Co.

30817 Instrument Specialties Co., Inc.

Hollister, Calif.

Lancaster, Pa.

Palo Alto, Calif.

Kenilworth, N. J.

Little Falls, N.

J.

33173 G. E. Receiving Tube Oept.

35434 Lectrohm Inc.

Owensboro, Ky.

Chicago, III.

36196 Stanwyck Coil Products Ltd.

Hawkesbury, Ontario, Canada

36287 Cunningham, W. H.

& Hill, Ltd.

Toronto Ontario, Canada

37942 P. R. Mallory & Co. Inc.

39543 Mechanical Industries Prod. Co.

Indianapolis, Ind.

40920 Miniature Precision Bearings, Inc.

42190 Muler Co.

43990 C. A. Norgren Co.

Akron, Ohio

Keene, N. H.

Chicago, III.

Englewood, Colo.

44655 Ohmite Mfg. Co.

46384 Penn Eng.

& Mfg. Corp.

Skokie, III.

Doylestown, Pa.

47904 Polaroid Corp.

Cambridge, Mass.

48620 PreciSion Thermometer & Inst. Co.

Southampton, Pa.

49956" Microwave & Power Tube Div.

52090 Rowan Controller Co.

52983 Sanborn Company

54294 Shallcross Mfg. Co.

Waltham, Mass.

Westminster, Md.

Waltham, Mass.

Selma, N. C.

55026 Simpson Electric Co.

55933 Sonotone Corp.

Chicago, III.

Elmsford. N. Y.

55938 Raytheon Co. Commercial Apparatus &

Systems Div.

So. Norwalk, Conn.

56137 SpaL .Ing Fibre Co., Inc.

56289 Sprague Electric Co.

59446 Telex Corp.

59730 Thomas & Betts Co.

60741 Triplett Electrical Inst. Co.

61775 Union SWitch and Signal. Div. of

Westinghouse Air Brake Co.

Tonawanda, N. Y.

North Adams, Mass.

Tulsa, Okla.

Elizabeth, N. J.

Bluffton, Ohio

Pittsburgh, Pa.

62119 Universal Electric Co.

63743 Ward·Leonard Electric Co.

64959 Western Electric Co., Inc.

Owosso, Mich.

Mt. Vernon,. N. Y.

65092 Weston Inst. Inc. Weston-Newark

66295 Wittek Mfg. Co.

66346 Minnesota Mining & Mfg. Co.

New York, N. Y.

Newark, N. J.

Chicago, III.

Revere Mincom Div.

St. Paul, Minn.

70276 Allen Mfg. Co.

70309 Allied Control

70318 Allmelal Screw Product Co., Inc_

Hartford, Conn.

New York, N. Y.

70417 Amplex, Div. of Chrysler Corp.

70485 Atlantic India Rubber Works, Inc.

Garden City, N. Y.

Detroit, Mich.

Chicago, III.

70563 Amperrte Co., Inc.

70674 ADC Products Inc.

70903 Belden Mfg. Co.

Union City, N.

J.

Minneapolis, Minn.

Chicago, III.

Code

No.

Manufactuntr Address

70998 Bird Electronic Corp.

71002 Birnbach Radio Co.

71034 Bliley Electric Co., Inc.

Cleveland, Ohio

New York, N. Y.

Erie, Pa.

71041 Boston Gear Works Div. of Murray Co, of Texas Quincy, Mass.

71218 Bud Radio, Inc.

71279 Cambridge Thermionics Corp.

71286 Camloc Fastener Corp.

71313 Cardwell Condenser Corp.

Willoughby, Ohio

Cambridge, Mass,

Paramus, N.J.

Lindenhurst L.I., N. Y.

71400 Bussmann Mfg. Div. of McGraw-Edison Co.

St. Louis, Mo.

'1436 Chicago Condenser Corp.

71447 Calif. Spring Co., Inc.

71450 CTS Corp.

71468 ITT Cannon Electric Inc.

Chicago, III.

Pico-Rivera, Calif.

Elkhart, Ind.

71471 Cinema, Div. Aerovox Corp.

71482 C. P. Clare & Co.

Los Angeles, Calif

Burbank, Calif.

Chicago, III.

71590 Centralab Div. of Globe Union Inc.

Milwaukee, Wis_

71616 Commercial Plastics Co.

71700 Cornish Wire Co., The

Chicago, III.

New York, N. Y.

71707 Coto Coil Co., Inc.

71744 Chicago Miniature Lamp Works

Providence, R.1.

71785 Cinch Mfg. Co., Howard B. Jones Div.

Chicago, III.

71984 Dow Corning Corp.

Chicago, III.

Midland, Mich.

72136 Electro Motive Mfg. Co., Inc.

Willimantic, Conn.

72619 Dialight Corp.

Brooklyn, N. Y.

72656 Indiana General Corp., Electronics Div.

Keasby, N. J.

72699 General Instrument Corp., Cap. Div. Newark, N.

J.

72765 Drake Mfg. Co.

72825 Hugh H. Eby Inc.

Harwood Heights, III.

Philadelphia, Pa.

72928 Gudeman Co.

72962 Elastic Stop Nut Corp.

72964 Robert M. Hadley Co.

Chicago, III.

Union, N. J.

Los Angeles, Calif.

72982 Erie Technological Products, Inc.

Erie, Pa.

73061 Hansen Mfg. Co., Inc.

73076 H. M. Harper Co.

Princeton, Ind.

Chicago, III.

73138 Helipot D,v. of Beckman Inst., Inc.

Fullerton, Calif.

73293 Hughes Products DiVision of Hughes

Aircraft Co.

Newport Beach, Calif.

73445 Amperex Elect Co.

73506 Bradley Semiconductor Corp.

Hicksville, L.I., N. Y.

New Haven, Conn.

73559 Carling ElectriC, Inc.

73586 Circle F Mfg. Co.

Hartford, Conn.

Trenton, N. J.

73682 George K. Garrett Co., Div. MSL

Industries Inc.

Philadelphia, Pa.

73734 Federal Screw Products Inc.

73743 Fischer SpeCial Mfg. Co.

73793 General Industries Co., The

73846 Goshen Stamping & Tool Co.

73899 JFD Electronics Corp.

73905 Jennings Radio Mfg. Corp.

Chicago, III.

Cincinnali, Ohio

Elyria, Ohio

Goshen, Ind.

Brooklyn, N. Y.

San Jose, Calif.

73957 Groov·Pin Corp.

74276 Signalile Inc.

Ridgefield, N. J.

Neptune, N. J.

74455 J. H. Winns, and Sons Winchester, Mass.

74861 Industrial Condenser Corp.

Chicago, III.

74868 R. F. Products Division of Amphenol·Borg

Electronics Corp.

74970 E.

F. Johnson Co.

75042 International Resistance Co.

75263 Keystone Carbon Co., Inc.

75378 CTS Knights Inc.

75382 Kulka Electric Corporalion

75818 Lenz Electric Mfg. Co.

75915 Littlefuse, Inc.

76005 Lord Mfg. Co.

Danbury, Conn.

Waseca, Minn.

Philadelphia, Pa.

St. Marys, Pa.

Sandwich, III.

Mt. Vernon, N. Y.

Chicago, III.

Des Plaines, III.

Erie, Pa.

Cod.

No.

Manufacturer

76210 C. W. Marwedel San Francisco, Calif.

76433 General Instrument Corp., Micamold Division

76487 James Millen Mfg. Co., Inc.

76493 J. W. Miller Co.

Newark, N.

J.

Malden, Mass.

Los Angeles, Calif.

76530 Cinch-Monadnock, Div. of United Carr

Fastener Corp.

San Leandro, Calif.

76545 Mueller Eleclric Co.

76703 National Union

Cleveland, Ohio

Newark, N. J.

76854 Oak Manufacturing Co.

Crystal Lake, III.

77068 The Bendix Corp., Electrodynamics Div.

N. Hollywood, Calif.

77075 Pacific Metals Co.

San Francisco, Calif.

77221 Phanostran Instrument and Electronic Co.

South Pasadena, Calif.

77252 Philadelphia Steel and Wire Corp.

Philadelphia, Pa.

77342 American Machine & Foundry Co. Potter

& Brumfield Div.

Princeton, Ind.

78277

78283

78290

78452

78471

78488

78493

78553

78790

78947

79136

79142

79251

79727

77630 TRW Electronic Components Div.

Camden, N. J.

77638 General Instrument Corp., Reclifier Div.

Brooklyn, N. Y.

77764 Resistance Products Co_

77969 Rubbercraft Corp. of Calif.

Harrisburg, Pa.

Torrance, Calif.

78189 Shakeproof Division of Illinois Tool Works

Elgin, III.

Sigma

Signal Indicator Corp.

Struthers·Dunn Inc.

Thompson·Bremer

Ti Itey Mfg. Co.

& Co.

Stackpole Carbon Co.

Siandard Thomson Corp.

So. Braintree, Mass.

NewYork,N.Y.

Pitman, N. J.

Chicago, III.

San Francisco, Calif.

St. Marys, Pa.

Waltham, Mass.

Cleveland, Ohio Tinnerman Products, Inc.

Transformer Engineers

Ucinite Co.

Waldes Kohinoor Inc.

Veeder Root, Inc.

Wenco Mfg. Co.

San Gabriel, Calif.

Newtonville, Mass.

Long Island City, N. Y.

Hartford, Conn.

Chicago, III.

Conlinental·Will Electronics Corp.

Philadetphia, Pa.

79963 Zierick Mfg. Corp.

New Rochelle, N. Y.

80031 Mepco Division of Sessions Clock Co.

Morristown, N. J.

80120 Schnitzer Alloy Products Co.

Elizabeth, N. J.

80131 Electronic Industries Association.

Any brand

Tube meeting EIA Standards-Washington, DC.

80207 Unimax SWitch, Div. Maxon Electronics Corp.

80223 United Transformer Corp.

80248 Oxford Electric Corp.

Wallingford, Conn.

New York, N. Y.

Chicago, III.

80294 Bourns Inc.

Riverside, Calif.

80411 Acro Div. of Robertshaw Controls Co.

Columbus, Ohio

80486 All Star Products Inc.

80509 Avery Label Co.

80583 Hammarlund Co., Inc.

80640 Stevens, Arnold, Co., Inc.

80813 Dimco Gray Co.

81030 Internationat Instruments Inc.

81073 Grayhill Co.

81095 Triad Transformer Corp.

Defiance, Ohio

Monrovia, Calif.

New York, N. Y.

Boston, Mass.

Dayton, Ohio

Orange, Conn.

LaGrange, It I.

Venice, Calif.

81312 Winchester Elec. Div. Litton Ind., Inc.

Oakville, Conn.

81349 Military Specification

81483 International Rectifier Corp.

EI Segundo, Calif.

81541 Airpax Electronics, Inc.

Cambridge, Maryland

81860 Barry Controls, D,v. Barry Wright Corp.

Watertown, Mass.

82042 Carter Precision Electric Co.

Skokie, III.

00015-45

Revised: Aplll, 1968

From: FSC.

H4-1

H4-2

Handbook Supplements

Dated AUGUST

Dated NOV.

1966

1962

Appendix A Model403B

CODE LIST OF MANUFACTURERS (Cont'd)

Code

No.

MCII'Iufocturer Address

82047

82142

Sperti Faraday Inc., Copper Hewill

Electric Div.

Jeffers Electronics Division of Speer

Hoboken, N. J.

Carbon Co.

Du Bois, Pa.

Fairchild Camera & Inst. Corp. Space & Defense 82170

82209

82219

82376

82389

82647

82768

82866

81877

82893

83058

83086

System Div.

Maguire Industries, Inc.

Paramus, N. J.

Greenwich, Conn.

Sylvania Electric Prod. Inc.

Electronic Tube Division

Astron Corp.

Emporium, Pa.

East Newark, Harrison, N, J,

Switchcraft, Inc.

Chicago, III.

Metals & Controls Inc. Spencer Products

Phillips·Advance Control Co.

Research Products Corp.

Rotron Mfg. Co., Inc.

Vector Electronic Co.

Carr Fastener Co.

Allleboro, Mass.

Joliet, III.

Madison, Wis.

Woodstock, N. Y.

Glendale, Calif.

Cambridge, Mass.

83125

New Hampshire Ball Bearing, Inc.

Peterborough, N. H.

General Instrument Corp., Capacitor Div.

Darlington, S. C.

83148

83186

83298

83315

83324

83330

83332

83385

83501

ITT Wire and Cable Div.

Victory Eng. Corp.

Bendix Corp., Red Bank Div.

Hubbell Corp.

Rosan Inc.

Smith, Herman H., Inc.

Tech Labs

Central Screw Co.

Los Angeles, Calif.

Springfield, N. J.

Red Bank, N. J.

Mundelein, III.

Newport Beach, Calif.

Brooklyn, N. Y.

Palisade's Park, N. J.

Chicago, III.

Gavill Wire and Cable Co.

Div. of Amerace Corp.

Brookfield, Mass.

Burroughs Corp. Electronic Tube Div.

83594

83740

Plainfield, N. J.

Union Carbide Corp. Consumer Prod. Div.

83777

8382 I

83942

84171

84396

84411

84970

85454

85471

85474

85660

85911

86197

Model Eng. and Mfg., Inc.

Loyd Scruggs Co.

Aeronauticallnsl. & Radio Co.

Arco Electronics Inc.

A. J. Glesener Co., Inc.

TRW Capacitor Div.

Sarkes Tarzlan, Inc.

Boonton Molding Company

A. B. Boyd Co.

R. M. Bracamonte

Kolierl Kords, Inc.

Sea,...

~ss

&

Rubber Co.

Co.

New York, N. Y.

Huntington, Ind.

Clifton Precision Products Co., Inc.

Festus, Mo.

Lodi, N.J.

Great Neck, N. Y.

San Francisco, Calif.

Ogallala, Neb.

Bloomington, Ind.

Boonton, N.1.

San,lFrancisco, Calif.

Sall. Francisco, Calif.

Hamden, Gonn.

Chicago, III.

Clifton Heights, Pa.

86579 Precision Rubber Products Corp.

86684 RadiO Corp. of America, Electronic

Compo & Devices Div.

Dayton, Ohio

Harrison, N.J.

87034 Marco Industries Anaheim, Calif.

87216 Phil co Corporation (Lansdale Division)

Lansdale, Pa.

87473 Western Fibrous Glass Products Co.

San Francisco, Calif.

87664 Van Walers & Rogers Inc.

87930 Tower Mfg. Corp.

88140 Cutler-Hammer, Inc.

San Francisco, Calif.

Providence, R. I.

Lincoln, III.

Code

No.

MCII'Iufacturer Address

88220 Gould·National Balleries, Inc.

88698 General Mills, Inc.

89231 Graybar Electric Co.

89473 G. E. Distributing Corp.

SI. Paul, Minn.

Buffalo, N. Y.

Oakland, Calif.

Schenectady, N. Y.

89665 United Transformer Co.

90030 United Shoe Machinery Corp.

Chicago, III.

Beverly, Mass.

90179 US Rubber Co., Consumer Ind. & Plastics

Prod. Div.

Passaic, N. J.

90970 Bearing Engineering Co.

San Francisco, Calif.

91146 ITT Cannon Elect, Inc., Salem Div. Salem, Mass.

91260 Connor Spring Mfg. Co.

91345 Miller Dial & Nameplate Co.

San Francisco, Calif.

EI Monte, Calif.

Chicago, III.

91418 RadiO Materials Co.

91506 Augatlnc.

91637 Dale Electronics, Inc.

91662 Elco Corp.

91737 Gremar Mfg. Co., Inc.

Attleboro, Mass.

Columbus, Nebr.

Willow Grove, Pa.

Wakefield, Mass.

91827 K F Development Co.

91886 Malco Mfg. Co., Inc.

Redwood City, Calif.

91929 Honeywell Inc., Micro Switch Div.

Chicago, III.

Freeport, III.

95236

95238

95263

95265

95275

95348

95354

95566

9m2

95984

95987

91961 Nahm·Bros. Spllng Co.

92180 Tru·Con nector Corp.

Oakland, Calif.

Peabody, Mass.

92367 Elgeet Opltcal Co. Inc.

92607 Tensolite Insulated Wire Co., Inc.

Rochester, N. Y.

Tarrytown, N. Y.

92702

92966

93332

IMC Magnetics Corp.

Hudson Lamp Co.

Wesbury Long Island, N. Y.

Kearney, N. J.

Sylvania Electric Prod. Inc.

93369

93410

93632

93929

94137

94144

Semiconductor Div.

Robbins & Myers Inc.

Stevens Mfg. Co., Inc.

Waters Mfg. Co.

G.V. Controls

General Cable Corp.

Woburn, Mass.

Palisades Park, N. J.

Mansfield, Ohio

Culver City, Calif.

Livingston, N. J.

Bayonne, N. J.

94148

Raytheon Co., Compo Div., Ind.

Compo Operations

Scientific Electronics Producls, Inc.

Quincy, Mass.

94154

94197

Loveland, Colo.

Wagner Elect. Corp., Tung·Sol Div. Newark, N. J.

Curtiss·Wright Corp. Electronics Div.

East Paterson, N. J.

94222

94330

94375

94682

South Chester Corp.

Wire Cloth Products, Inc.

Automatic Metal Producls Co.

Worcester Pressed Aluminum Corp.

Chester, Pa.

Bellwood, III.

Brooklyn, N. Y.

94696

95023

Worcester, Mass.

Magnecraft Electric Co.

George A. Philbrick Researchers, Inc.

Chicago, III.

Allies Products Corp.,

Continental Connector Corp.

Leecraft Mfg. Co., Inc.

Nalional Coil Co.

Vitramon, Inc.

Gordos Corp.

Methode Mfg. Co.

Arnold Engineering Co.

Dage Electric Co., Inc.

Siemon Mfg. Co.

Weckesser Co.

Boston, Mass.

Dania, Fla.

Woodside, N. Y.

Long Island, N. Y.

Sheridan, Wyo.

Bridgeport, Conn.

Bloomfield, N.J.

Rolling Meadows, III.

Marengo, III.

Franklin, Ind.

Wayne, III.

Chicago, III.

Code

No.

MCII'Iufoctur., Aclclress

96067 Huggins Laboratories

96095 Hi·Q Div. of Aerovox Corp.

96256 Thordarson·Meissner Inc.

96296 Solar Manufacturing Co.

96330 Carllon Screw Co.

96341 Microwave Associates, Inc.

96501 Excel Transformer Co.

97464 Industrial Retaining Ring Co.

97539 Automatic & Precision Mfg.

97979 Reon Resistor Corp.

Sunnyvale, Calif.

Olean, N. Y.

Mt. Carmel, III.

Los Angeles, Calif.

Chicago, III.

Burlington, Mass.

Oakland, Calif.

Irvington, N. J.

Englewood, N.J.

Yonkers, N.Y.

97983 Lillon System Inc., Adler·Westrex

Commun. D,v.

New Rochelle, N. Y.

98141 R·Troncis, Inc.

98159 Rubber Teck, Inc.

Jamaica, N. Y.

Gardena, Calif.

98220 Hewlett·Packard Co. , Moseley Div.

Pasadena, Calif.

98278 Microdot, Inc.

98291 Sealectro Corp.

98376 Zero Mfg. Co.

98731 General Mills Inc.,

So. Pasadena, Calif.

Mamaroneck, N. Y.

Electronics Div.

Burbank, Calif.

Minneapolis, Minn.

98734 Paeco Div. of Hewlell·Packard Co.

Palo Alto, Calif.

98821 North Hills Electronics, Inc.

Glen Cove, N. Y.

98978 International Electronic Research Corp.

Burbank. Calif.

99109 Columbia Technical Corp.

99313 Varian Associates

99378 Attee Corp.

99515 Marshall Ind., Capacitor Div.

New York, N. Y.

Palo Alto, Calif.

Winchester, Mass.

Monrovia, Calif.

99707 Control Switch Division, Controls Co.

of America EI Segundo, Calif.

99800 Delevan Electronics Corp.

99848 Wilco Corporation

99934 Renbrandt, Inc.

99942 Hoffman Electronics Corp.

Semiconductor Div.

East Aurora, N. Y.

Indianapolis, Ind.

Boston, Mass.

EI Monte, Calif.

99957 Technology Instrumenl Corp. of Calif.

Newbury Park, Calif.

THE FOLLOWING HP VENDORS HAVE NO NUMBER

ASSIGNED IN THE LATEST SUPPLEMENT TO THE

FEDERAL SUPPLY CODE FOR MANUFACTURERS

HANDBOOK.

OOOOF

OOOOZ

Malco Tool and Die Los Angeles, Calif.

Willow Leather Products Corp.

Newark, N. J.

OOOAB

OOOBB

ETA

PreCISion Instrument Components Co.

England

Van Nuys. Calif.

OOOCS Hewlett-Packard Co., Colorado Springs.

OOOMM

OOONN

OOOQQ

OOOWW

Cotorado Springs, Colorado

Rubber Eng. & Development Hayward, Calif.

A "N" 0 Mfg_ Co_

Coollron

San Jose, Calif.

Oakland, Calif.

California Easlern Lab.

ooon

S. K. Smllh Co.

Burlinglon, Calif.

Los Angeles, Calif.

SUPPLEMENTAL CODE LIST OF MANUFACTURERS

OOOLM Newark

13189 Bunt. Metal Product.

Co.

'4163 Phelpe Dodce Corp.

08300 $one Paper Tube Co.

OUII Skottte

Denver, Colorado

Chicaeo.

mlnal.

New York. New York

WUhlngton. D. C.

Archibald.

Penn.ylvanLJ

00015-45

Revised: Aplll, 1968

From: FSC.

H4-1

H4-2

Handbook Supplements

Dated AUGUST 1966

Dated NOV 1962

Mode1403B Appendix B

SALES & SERVICE OFFICES

UNITED STATES

ALABAMA

P.O. Box 4207

2003 Byrd Sprine Road S.W.

Hlnlsville 35802

Tel: (205) 881·4591

TWX: 810·726·2204

ARIZONA

2336 E.

Magnolia SI.

Phoenix 85034

Tel: (602) 252·5061

TWX: 910·951·1330

5737 East Broadway

Tucson 85716

Tel: (602) 298·2313

TWX: 910·952·1162

CONNECTICUT

508 Tolland Street

East Hartford 06108

Tel: (203) 289·9394

TWX: 710·425·3416

111 East Avenue

Norwalk 06851

Tel: (203) 853·1251

TWX: 710·468-3750

FLORIDA

P.O. Box 24210

2806 W. Oakland Park Blvd.

FI. lauderdale 33307

Tel: (305) 731·2020

TWX: 510·955·4099

P.O. Box 20007

Herndon Station 32814

621 Commonweallh Avenue

Orlando

Tel: (305) 841-3970

TWX: 810-850'0113

CALIFORNIA

1430 East Orangethorpe Ave.

Fullerton 92631

Tel: (714) 870·1000

3939 Lankerehim Boulevard

North Hollywood 91604

Tel: (213) 877·1282

TWX: 910·499·2170

1101 Embarcadero Road

Palo Allo 94303

Tel: (415) 327·6500

TWX: 910·373·1280

2220 Wall Ave.

Sacramento 95825

Tel: (916) 482·1463

TWX: 910·367·2092

9606 Aero Drive san 01'10 92123

Tel: (714) 279·3200

TWX: 910·335·2000

COLORAOO

7965 East Prentice

£nllewood 80110

Tel: (303) 771-3455

TWX: 910-935'0705

GEORGIA

P.O. Box 28234

450 Interstate North

Allanta 30328

Tel: (404) 436·6181

TWX: 810-766-4890

ILLINOIS

5500 Howard Street

Skokie 60076

Tel: (312) 677-0400

TWX: 910-223·3613

INDIANA

3839 Meadows Drive

Indianapolis 46205

Tel: (317) 546-4891

TWX: 810-341-3263

LOUISIANA

P.O_ Box 856

1942 Williams Boulevard

Ilenner 70062

Tel: (504) 721·6201

TWX: 810-955-5524

MARYLAND

6707 Whitestone Road

Baltimore 21207

Tel: (301) 944·5400

TWX: 710-862-9157

P.O. Box 1648

2 Choke Cherry Road

Rockville 20850

Tel: (301) 948·6370

TWX: 710-828-9684

MASSACHUSETTS

32 Hartwell Ave.

Lexinlton 02173

Tel: (617) 861-8960

TWX: 710-326·6904

MICHIGAN

21840 West Nine Mile Road

Southfield 48075

Tel: (313) 353-9100

TWX: 810·224·4882

MINNESOTA

2459 University Avenue

St_ Paul 55114

Tel: (612) 645-9461

TWX: 910·563·3734

MISSOURI

11131 Colorado Ave.

Ilansas City 64137

Tel: (816) 763-8000

TWX: 910-771-2087

2812 South Brentwood Blvd.

SI. Louis 63144

Tel: (314) 962-5000

TWX: 910·760-1670

NEW JERSEY

W. 120 Century Road

Paramus 07652

Tel: (201) 265-5000

TWX: 710·990·4951

1060 N. Kings Highway

Cherry Hill 08034

Tel: (609) 667-4000

TWX: 710-892-4945

NEW MEXICO

P.O. Box 8366

Station C

6501 Lomas Boulevard

Albuquerque 87108

Tel: (505) 265-3713

TWX: 910-989-1665

H.E.

156 Wyall Drive

Las Cruces 88001

Tel: (505) 526-2485

TWX: 910-983-0550

NEW YORK

1702 Central Avenue

Albany 12205

Tel: (518) 869-8462

TWX: 710-441·8270

1219 Campville Road

Endicott 13760

Tel: (607) 754-0050

TWX: 510-252-0890

82 Washington Street

Poulhkeepsle 12601

Tel: (914) 454-7330

TWX: 510·248·0012

39 Saginaw Drive

Rochester 14623

Tel: (716) 473-9500

TWX: 510-253-5981

5858 East Molloy Road

Syracuse 13211

Tel: (315) 454-2486

TWX: 710-541-0482

1 Crossways Park West

Woodbury 11797

Tel: (516) 921-0300'

TWX: 510-223-0811

NORTH CAROLINA

P.O. Box 5188

1923 North Main Street

Hilh Point 27262

Tel: (919) 885-8101

TWX: 510·926-1516

OHIO

25575 Center Ridee Road

Cleveland 44145

Tel: (2)6) 835-0300

TWX: 810-427-9129

3460 South Dixie Drive

Dayton 45439

Tel: (513) 298-0351

TWX: 810·459-1925

1120 Morse Road

Columbus 43229

Tel: (614) 1146·1300

OKLAHOMA

2919 United Founders Boulevard

Oklahoma City 73112

Tel: (405) 848-2801

TWX: 910-830·6862

OREGON

Westhilis Mall, Suite 158

4475 S.W. Scholls Ferry Road

Porlland 97225

Tel: (503) 292-9171

TWX: 910-464·6103

PENNSYLVANIA

2500 Moss Side Boulevard

Monroeville 15146

Tel: (412) 271·0724

TWX: 710-797-3650

1021 8th Avenue

Kine of Prussia Industrial Park

Ilinl of Prussia 19406

Tel: (215) 265-7000

TWX: 510-660-2670

VERMONT

P.O. Box 2287

Kennedy Drive

South Burllneton 05401

Tel: (802) 658-4455

TWX: 510·299·0025

VIRGINIA

P.O. Box 6514

2111 Spencer Road

Richmond 23230

Tel: (703) 285-3431

TWX: 710-956-0157

WASHINGTON

433·108th N.E.

Bellevue 98004

Tel: (206) 454·3971

TWX: 910-443-2303

·WEST VIRGINIA

Charleston

Tel: (304) 768·1232 RHODE ISLAND

873 Waterman Ave.

East Providence 02914

Tel: (401) 434-5535

TWX: 710-381-7573

P.O_ Box 22813

6300 Westpark Drive

Suite 100

Houston 77027

Tel: (713) 781-6000

TWX: 910-881-2645

231 Billy Mitchell Road

San Antonio 78226

Tel: (512) 434-4171

TWX: 910·871-1170

UTAH

2890 South Main Street

Salt Lake City 84115

Tel: (80l) 487·0715

TWX: 910-925-5681

TEXAS

P.O. Box 1270

201 E. Arapaho Rd.

Richardson 75080

Tel: (214) 231-6101

TWX: 910-867-4723

FOR U.S. AREAS NOT

LISTED:

Contact the regional office nearest you: Allanta, Georgia

North Hollywood, California

Paramus, New Jersey ... Skokie,

Illinois.

Their Jmplete addresses are Iisteo above.

.

.

·Service Only

CANADA

ALBERTA

Hewlell-Packard (Canada) Ltd.

11745 Jasper Ave.

Edmonton

Tel: (403) 482-5561

TWX: 610-831-2431

BRITISH COLUMBIA

Hewlell-Packard (Canada) Ltd.

4519 Canada Way

North Burnaby 2

Tel: (604) 433-8213

TWX: 610-922·5059

MANITOBA

Hewlell-Packard (Canada) L d.

511 Bradford CI.

Winnipeg

Tel: (204) 786·7581

TWX: 610·671-3531

NOVA SCOTIA

Hewlell-Packard (Canada) Ltd.

2745 Dutch Village Rd.

Suite 206

Halifax

Tel: (902) 455-0511

TWX: 610-271·4482

ONTARIO

Hewlell·Packard (Canada) Ltd.

880 Lady Ellen Place

Ollawa 3

Tel: (613) 722-4223

TV/X 610·562-1952

HeNlell-Packard (Canada) Ltd.

50 Galaxy Blvd.

Rexdale

Tel: (416) 677·9611

TWX: 610·492-4246

QUEBEC

Hewlell-Packald (Canada) Ltd

275 Hymus Boulevard

Pointe Claire

Tel (514) 697·4232

TWX· 610·422-3022

Telex: 01·20607

FOR CANADIAN AREAS NOT

LISTED:

Contact Hewlell·Packard (Canada) Ltd. in Pointe Claire, at the complete address listed above.

CENTRAL AND SOUTH AMERICA

ARGENTINA

Hewlett-Packard Argentina

S.A.C.e.1

Lavalle 1171 - 3

8uenos Aires

Tel: 35·0436, 35·0627, 35·0431

Telex: 012·1009

Cable. HEWPACKARG

Hewlell·Packard Do Brasil

Industria e Comercia llda.

Praca Dam Feliciano 78

Salas 806-8

Porto Alegre RGS

ECUADOR

Laboratorios de Radio-Ingenieria

Calle GuayaQuil 1246

Post Ollice Box 3199 auito

Tel: 212·496; 219·185

Cable: HORVATH Quito

BRAZIL

Hewlell·Packard Do Brasil l.e.C Ltda.

Rua Frei Caneca 1119

Sao Paulo· 3, SP

Tel: 288·7111, 287·5858

Cable: HEWPACK Sao PaulO

CHILE

H~ctor Calcagni y Cia, llda.

Bustos, 1932-3er Piso

Casilla 13942

Sanliaeo

Tel: 423 96

Cable: CALCAGNI Santiago

EL SALVADOR

Electr6nica

Apartado Postal 1589

Blvd. Venezuela 1231

San Salvador

Tel: 217527; 214895

Cable: ELECTRONICA

San Sal ador

Hewlell-Packard Do Brasil

Praca Dam Feliciano 78

Salas 806/808

Porto Alegre

Rio Crande do Sui (RS)-Brasil

Tel: 25·8470

Cable HEWPACK Porto Alegre

COLOMBIA

Instrumentacion

Henrik A. Langebaek llda.

Carrera 7 No. 48·59

Apartado Aereo 6287

& K,er

BOlota, 1 D.£.

Tel: 45-78-06, 45·55-46

Cable: AARIS Bogota

Telex: 44400 INSlCO

Hewlell·Packard Do BraSIl l.e.C. Ltda.

Rua da Matriz 29

80tafogo ZC·02

Rio de Janeiro, GB

Tel: 246-4417

Cable: HEWPACK RIO de laneoro

COSTA RICA

Lic. Allredo Gallegos Gurdi~n

Apartado 10159

San Jose

Tel: 21-86-13

Cable: GALGUR San Jos~

MEXICO

Hewlet ·Packard Mexicana, SA.

de C.V.

622 Adalia Prieto

Col. del Valle

Mexico 12. D.F.

Tel: 541·4232; 523-1874

Telex: 0017·74507

NICARAGUA

Roberto Ter~n G.

Apartado Postal 689

Edificio Ter~n

Managua

Tel. 3451. 3452

Cable: ROTE RAN Managua

PANAMA

Electr6nico 8alboa, S.A.

P.O. Box 4929

Ave. Manuel Espinosa No. 13-50

Bldg. Alina

Panama City

Tel: 230833

Telex' 3481003, Curundu.

Canal Zone

Cable: ELECTRON Panama City

PERU

Campania Electro MedIca S.A.

Ave. EnriQue Canaual 312

San Isidro

Casilla 1030

Lima

Tel: 22·3900

Cable: ELMED Lima

PUERTO RICO

San Juan Electronics, Inc.

P.O. Box 5167

Ponce de Leon 154

Pda. 3·PTA de Tierra

San Juan 00906

Tel: (809) 725·3342, 722·3342

Cable: SATRONICS San Juan

Telex· SATRON 3450 332

SURINAME

Sur tel-Radio Holland N.V.

P.O. Box 155

Paramaribo

Tel: 72118

Cable: T,eurnlet Paramaribo

URUGUAY

Pablo Ferrando S.A.

Comercial e Industrial

A enid a Italia 2877

Casilia de Correa 370

Montevideo

Tel: 40·3102

Cable: RADIUM Montevideo

VENEZUELA

Hewlett·Packard De Venezuela

C.A.

Apartado 50933

Caracas

Tel: 71.88.05, 71.88.69, 71.99.30

Cable: HEWPACK Caracas

Telex: 39521146

FOR AREAS NOT LISTED,

CONTACT:

Hewlett·Packard

INTERCONTINENTAL

3200 Hillview Ave.

Palo Alto, California 94304

Tel: (415) 493-1501

TWX: 910-373-1267

Cable: HEWPACK Palo Alto

Tele.: 034-8461

E 6·71

Appendix B Mode1403B

EUROPE

AUSTRIA

Unitabor GmbH

Wissenschaftliche Instrumente

Rummelhardtcasse 6

P.O. Box 33

A·1095 Vienna

Tel: (222) 42 6181,431394

Cable: LABOR INSTRUMENT

Vienna

Telex: 75 762

BELGIUM

Hewlett·Packard S.A. Benelux

348 Boulevard du Souverain

B·1I60 Brussels

Tel: (02) 722240

Cable: PA10BEN Brussels

Telex: 23 494

DENMARK

Hewlell·Packard A/S

Oatavej 38

OK·3460 Birkerod

Tel: (01) 81 66 40

Cable: HEWPACK AS

Telex: 66 40

Hewlell·Packard A/S

Torvet 9

OK·8600 Silkeborc

Te': (06)·82·71·66

FINLAND

Hewlell·Packard Oy

Bulevardi 25

P.O. Box 12185

Helsinki 12

Tel: 13·730

Cable: HEWPACKOY·Helsinkl

Telex: 12·1563

FRANCE

Hewlell·Packard France

Quartier de Courtaboeuf

Bolle Postale No.6

F·91 Orsay

Tel: 1-920 B8 01

Cable: HEWPACK Orsay

Telex: 60048

Hewlett·Packard France

4 Qual des Etroits

F·69 lyon 5~me

Tel: 78·42 63 45

Cable: HEWPACK lyon

Telex: 31617

Hewlett·Packard France

29 rue de la Gara

F·31 Blacnac

Tel: (61) 85 82 29

Telex: 51957

GERMANY

Hewlett·Packard Verlriebs·GmbH

Berliner Strasse 117

Poslfach 560/40

06 Nieder·Eschbach/Ffm 56

Tel: (0611) 50 10 64

Cable: HEWPACKSA Frankfurt

Telex: 41 32 49 FRA

Hewlett·Packard Vertriebs·GmbH

Wilmersdorfer Strasse 113/114

0·1000 Berlin W. 12

Tel: (0311) 3137046

Telex: 18 34 05

Hewlett·Packard Vertriebs·GmbH

Herrenbercerstrasse 110

07030 Biiblincen, Wiirllemberg

Tel: (07031) 66 72 86

Cable: HEPAG Bliblingen

Telex: 72 65 739

Hewlett·Packard Vertriebs·GmbH

Vogelsancer Weg 38

04 Dusseldorf

Tel: (0211 63 80 31/35

Telex: 85/86 533

Hewlett·Packard Vertrlebs·GmbH

Wendenstr. 23

02 Hamburc 1

Tel: (0411) 24 05 51/52

Cable: HEWPACKSA Hamburc

Telex: 21 5332

Hewlett·Packard Verlrlebs·GmbH

Reginfriedstrasse 13

08 Munchen 9

Tel: (0811) 69 59 71/75

Cable: HEWPACKSA Munchen

Telex: 52 49 8~

GREECE

Kostas Karayannis

18, Ermou Street

Athens 126 \

Tel: 230301,3,5

Cable: RAKAR Athens

Telex: 21 59 62 RKAR GR

IRELAND

Hewlett·Packard ltd.

224 Bath Road

SlOUCh, Sli 4 OS, Bucks

Tel: SlOUCh 753·33341

Cable: HEWPIE SlOUCh

Telex: 84413

ITALY

Hewlett·Packard Italiana S.p.A.

Via Amerigo Vespucci 2

1·20124 Mitan

:rei: (2) 6251 (10 lines)

Cable: HEWPACKIT Milan

Telex: 32046

Hewlett·Packard lIaliana S.p.A.

Palazzo lIalia

Piazza Marconi 25

1·00144 Rome· Eur

Tel: 6·591 2544

Cable: HEWPACKIT Rome

Telex: 61514

NETHERLANDS

Hewlett·Packard Benelux, N.V.

Weerdestein 117

P.O. Box 7825

Amsterdam, Z 11

Tel: 020·42 77 77

Cable: PA10BEN Amsterdam

Telex: 13 216

NORWAY

Hewlett·Packard Norce A/S

Box 149

Nesve,en 13

N·1344 Haslum

Tel: (02)·53 83 60

Cable: HEWPACK Oslo

Telex: 16621

PORTUGAL

Telectra

Empresa Tecnica de

EQuipamentos

Electricos, S.a.r.1.

Rua Rodrico da Fonseca 103

P.O. Box 2531 lisbon 1

Tel: 68 60 72

Cable: TE1ECTRA lisbon

•

Telex: 1598

SPAIN

Ataio Ingenieros SA

Enrique larreta 12

Madrid, 16

Tel: 215 35 43

Cable: TElEATAIO Madrid

Telex: 27249E

Ataio Ingenieros SA

Ganduxer 76

Barcelona 6

Tel: 211·44·66

Cable: TElEATAIO Barcelona

SWEDEN

Hewlett·Packard Sveriae AB

Enichetsv~cen 1·3

Fack

S·161 20 8romma 20

Tel: (08) 98 12 50

Cable: MEASUREMENTS

Stockholm

Telex: 10721

Hewlett·Packard Sverige AB

Hacakerscatan 9C

S·431 41 Millndal

Tel: 031 ·276800

Telex: 21 312 hpmlndl

SWITZERLAND

Hewlett Packard Schweiz AG

Zurcherstrasse 20

CH·8952 Schlieren Zurich

Tel: (051) 98 18 21/24

Cable: HPAG CH

Telex: 53933

Hewlett Packard Schweiz A.G.

Rue du Bois·du·lan 7

1217 Meyrin 2 Geneva

Tel: (022) 41 5400

Cable: HEWPACKSA Geneva

Telex: 27333 HPSA CH

TURKEY

Telekom Encineering Bureau

P.O. Box 376

Karakoy

Istanbul

Te': 49 40 40

Cable: TE1EMATlON Istanbul

UNITED KINGDOM

Hewlett·Packard ltd.

224 Bath Road

SlOUCh, Sli 4 OS, Bucks

Tel: Slough (0753) 33341

Cable: HEWPIE SlOUCh

Telex: 84413

Hewlett·Packard ltd.

The Graftons

Stamford New Road

Allrincham, Cheshire

Tel: 061 928·8626

Telex: 668068

YUGOSLAVIA

Belram SA

83 avenue des Mimosas

Brussels 1150, 8elcium

Tel: 34 33 32, 34 26 19

Cable: 8E1RAMEl Brussels

Telex: 21790

SOCIALIST COUNTRIES

PLEASE CONTACT:

Hewlett·Packard Ges.m.b.H

Innstrasse 23/2

Postfach

A1204 Vienna, Austria

Tel: (222) 3366 06/09

Cable: HEWPACK Vienna

Telex: 75923

ALL OTHER EUROPEAN

COUNTRIES CONTACT:

Hewlett·Packard S.A.

Rue du Bois·du·lan 7

1217 Meyrin 2 Geneva

Switzerland

Tel: (022) 41 54 00

Cable: HEWPACKSA Geneva

Telex: 2.24.86

AFRICA, ASIA, AUSTRALIA

ANGOLA

Telectra Empresa Hcnia de EQuipamentos EI~clricos

SAR

Rua de Barbosa Rodricues

42·1·

Box 6487 luanda

Cable: TElECTRA luanda

CEYLON

United Electrlcals ltd.

P.O. Box 681

Yahala Buitdlnc

Staples Street

Colombo 2

Tel: 5496

Cable: HOTPOINT Colombo

AUSTRALIA

Hewlett·Packard Australia

Pty. ltd.

22·26 Weir Street

Glen Iris, 3146

Victoria

Tel: 20.1371 (6 lines)

Cable: HEWPARO Melbourne

Telex: 31024

Hewlett·Packard Australia

Pty. ltd.

61 Alexander Street

Crows Nest 2065

New South Wales

Tel: 43.7866

Cable: HEWPARO Sydney

Telex: 21561

Hewlett·Packard Auslralia

Ply. ltd.

97 Churchill Road

Prospect 5082

South Australia

Tel: 65.2366

Cable: HEWPARO Adelaide

Hewlett Packard Australia

Pty. ltd.

2nd Floor, Suite 13

Casablanca Buildlncs

196 Adelaide Terrace

Perth, W.A. 6000

Tel: 21·3330

Cable: HEWPARO Perth

Hewlett·Packard Australia

Pty. ltd.

10 Woolley Street

P.O. Box 191

Dickson A.C.T. 2602

Tel: 49·8194

Cable: HEWPARO Canberra ACT

Hewlett·Packard Australia

Pty. lid.

75 Simpsons Road

Bardon

Queensland, 4068

Tel: 36·5411

Blue Star lid.

Blue Star House,

34 Ring Road lajpat Nacar

New Deihl 24, India

Tel: 62 32 76

Tel": 463

Cable: B1UESTAR

CYPRUS

Kypronlcs

19 Grecorios &

P.O. Box 1152.

Xenopoulos Road

Blue Star ltd.

17·C Ulsoar Road

Banaalore·8

Nicosia

Tel: 6282·75628

Cable: HE·I·NAMI

Blue Star. ltd.

7 Hare Street

P.O. Box 506

Calcutta 1, India

Tel: 23·0131

Telex: 655

Cable: BlUESTAR

Blue Star, ltd.

96 Park lane

Secunderabad 3, India

Tel: 7 63 91

Cable: B1UEFROST

ETHIOPIA

African Salespower & Agency

Private ltd., Co.

P. O. Box 718

58/59 Cunningham SI.

Addis Ababa

Blue Star, ltd.

23/24 Second line Beach

Madras I, India

Tel: 2 39 55

Telex: 379

Cable: B1UESTAR

Tel: 12285

Cable: ASACO Addlsababa Blue Star, lid.

& Co. (Honc Kong) ltd.

1B Kaiser Bungalow

HONG KONG

Oindli Road

Schmidt

Jamshedpur, India

P.O. Box 297

Tel: 38 04

1511, Prince's BuildinC 15th Floor Cable: B1UESTAR

10, Chater Road

Hone Kone

Tel: 240168, 232735

Cable: SCHMIDTCO Hong Kane

INDONESIA

Bah Bolon Tradlna Coy. N.V.

Olalah Merdeka 29

Bandune

INDIA

Blue Star ltd.

Kasturl BUildincs

Tel: 4915; 51560

Cable: 11MU

Telex: 08·809

Jamshedji Tata Rd.

Bombay 20BR, India

IRAN

Tel: 29 50 21

Telex: 2156

Cable: BlUEFROST

Telecom, ltd.

P. O. Box 1812

240 Kh. Saba Shomall

Blue Star ltd.

Teheran

Tel: 43850, 48111

Band Box House

Prabhadevi

Cable: BASCOM Teheran

Bombay 2500, India

Tel: 45 73 01

Telex: 2156

ISRAEL

Electronics & Encineerlng

Olv. of Motorola Israel ltd.

Cable: BlUESTAR

17 Amlnadav Street

Tel·Aviv

Blue Star ltd.

14/40 Civil lines

Tel: 36941 (3 lines)

Kanpur, India

Tel: 688 82

Cable: BASTEI Tel·Avlv

Telex: Bastel Tv 033·569

Cable: B1UESTAR JAPAN

Yokogawa·Hewlett·Packard ltd.

Ohashi Buildinc

1·59·1 Yoyogi

Shibuya·ku, Tokyo

Tel: 03·370·2281/7

Telex: 232·2024YHP

Cable: YHPMARKET TOK 23·724

Yokocawa·Hewlett·Packard ltd.

Nisei Ibaragi BldC.

2·2·8 Kasuca

Ibaraci·Shi

Ouka

Tel: (0726) 23·1641

Telex: 385·5332 YHPOSAKA

Yokocawa·Hewlett·Packard ltd.

Ito Bulldlnc

No. 59, Kotorl·cho

Nakamura·ku, Nacoya City

Tel: (052) 551·0215

Yokogawa·Hewlett·Packard ltd.

Nitta Bldg.

2300 Shinohara·cho,

Kohoku·ku

Yokohama 222

Tel: (405) 432·1504/5

KENYA

Kenya Kinetics

P.O. Box 18311

Nairobi, Kenya

Tel: 57726

Cable: PROTON

KOREA

American Tradinc Co.,

Korea, ltd.

Seoul P.O. Box 1103

7th & 8th floors, OaeKyuna Bldg.

107 Sejone Ro

Chongro·Ku, Seoul

Tel: 75·5841 (4 lines)

Cable: AMTRACO Seoul

LEBANON

Constantin E. Macridls

Clemenceau Street

P.O. Box 7213

Beirut

Tel: 220846

Cable: ELECTRO NUCLEAR Beirut

MALAYSIA

MECOMB Malaysia ltd.

2 loronc 13/6A

Section 13

Petallnc Jaya, Selaneor

Cable: MECOMB Kuala lumpur

MOZAMBIQUE

A. N. Goncalves, IDA.

4.1 ApI. 14 Av. O. luis

P.O. Box 107 lourenco Marques

Cable: NEGON

NEW ZEALAND

Hewlett·Packard (N.Z.) ltd.

94·96 Dixson SI.

P.O. Box 9443

Wellineton, N.Z.

Tel: 56·559

Cable: HEWPACK Wellincton

Hewlett Packard (N.Z.) ltd.

Box 51092

Pukuranca

Tel: 573·733

Cable: HEWPACK, Auckland

PAKISTAN (EASn

Mushko & Company, ltd.

I, Jinnah Avenue

Dacca 2

Tel: 280058

Cable: NEWOEAl Dacca

PAKISTAN (WEST)

Mushko & Company, ltd.

Oosman Chambers

Abdullah Haroon Road

KarachI 3

Tel: 511027, 512927

Cable: COOPERATOR Karachi

PHILIPPINES

Electromex Inc.

Makatl Commercial Center

2129 Pasonc Tamo

Makati, Rlzal 0 708

P.O. Box d028

Manila' -,.

Tel: 89·85·01; 88·91-71

Caf\e;-'ElEMEX Manila

SINGAPORE

Mechanical and Combustion

Enclneerina Company ltd.

9, Jalan Kllanc

Red Hill Industrial Estate

Sincapore, 3

Tel: 642361·3; 632611

Cable: MECOMB Sincapore

Hewlett·Packard Far East

Area Office

P.O. Box 87

Alexandra Post Office

Sineapore 3

Tel: 633022

Cable: HEWPACK SINGAPORE

SOUTH AFRICA

Hewlett Packard South Africa

(Pty.), ltd.

P.O, Box 31716

Braamfontein Transvaal

Milnerton

30 De Beer Street

Johannesburc

Tel: 725·2080, 725·2030

Telex: 0226 JH

Cable: HEWPACK Johannesbura

Hewlett Packard South Africa

(Pty.), ltd.

Breecastle House

Bree Street

Cape Town

Tel: 3·6019, 3·6545

Cable: HEWPACK Cape Town

Telex: 5·0006

Hewlett Packard South Africa

(Pty.), ltd.

30B Glenwood Centre

Corner Hunt

P.O. Box 99

& Moore Roads

Dverport, Natal

Tel: 347536

TAIWAN

Hewlett Packard Taiwan

39 Chung Shiao West Road

Sec. 1

Overseas Insurance

Corp. 81dC. 7th Floor

Taipei

Tel: 579·605, 579-610, 579·613

Telex: TP824 HEWPACK

Cable: HEWPACK Taipei

THAILAND

The International

Enclneerina Co., ltd.

P. O. Box 39

614 Sukhumvit Road

Banekok

Tel: 910722 (7 lines)

Cable: GYSOM

T1X INTENCO BK·226 Bangkok

UGANDA

Uganda Tele·Eleclric Co., ltd.

P.O. Box 4449

Kampala

Tel: 57279

Cable: COMCO Kampala

VIETNAM

Peninsular Trading Inc.

P.O. Box H·3

216 Hlen·Vuong

Saleon

Tel: 20805, 93398

Cable: PENTRA, SAIGON 242

ZAMBIA

R. J. Tilbury (Zambia) Ltd.

P.O. Box 2792 lusaka

Zambia, Central Africa

Tel: 73793

Cable: ARJAYTEE, lusaka

MEDITERRANEAN AND

MIDDLE EAST COUNTRIES

NOT SHOWN PLEASE

CONTACT:

Hewlett·Packard Correspondence

Office

Piazza Marconi 25

1·00144 Rome·Eur, Italy

Tel: (6) 59 40 29

Cable: HEWPACKIT Rome

Telex: 61514

OTHER AREAS NOT

LISTED, CONTACT:

Hewlett·Packard

INTERCONTINENTAL

3200 Hillview Ave.

Palo Alto, California 94304

Tel: (415) 326·7000

(Feb. 71 493-1501)

TWX: 910·373·1267

Cable: HEWPACK Palo Alto

Telex: 034·8461

Model403B

Appendix C

II

MANUAL BACKDATING CHANGES

MODEL 403B

TRANSISTORIZED AC VOLTMETER

This manual backdating sheet makes this manual appllcable to earlier instruments.

Instrument-component values that differ from those in the manual, yet are not listed in the backdating sheet, should be replaced using the part number given in the manual.

Instrument Serial Prefix Make Manual Changes Instrument Serial Prefix Make Manual Changes

225-

523-05300 and below

523-05825 and below

523-09985 and below

CHANGE 1:

CHANGE 2:

CHANGE 3:

CHANGE 4:

CHANGE 5:

CHANGE 6:

1

2

4

3

949-10635 and below 5

Table 6-1, Page 6-6:

Delete index #19, Battery Holder; -hp- Part No. 5040-0615; 2 ea.

Add Battery Holder; -hp- Part No. 403B-64A and 403B-64B.

Page 6-2:

Change Q7 from 2N3638 (1853-0016) to 2N1183 (1850-0064).

- - - - - - - N O T E - - - - - - - - - -

Transistor 2N3638 is a preferred change for all

403B instruments.

Page 5-11/5-12, Figure 5-8:

Change C15 from: 100 pF, Part No. 0146-0176 to: 120 pF, Part No. 0140-0216

Table 6-1:

Change the following Part Nos:.

DS1 to 1450-0048, 32 to 1251-0148, W1 to 8120-0078.

Table 6-2:

Change the following Part Nos:

Item 9 to 403B-2B, Item 23 (Fig. 6-1) to 403B-2B.

Pages 5-9, 6-2, 6-3:

Change the following parts descriptions:

Q1 to 5080-9029; TSTR Ge PNP Selected

Q2, 3. and 5 to 1850-0096; TSTR Ge PNP 2N2189

Q4, 6 to 1854-0017; TSTR Si NPN 2N706A

R7 to 0758-0051; R: fxd comp 43K ± 5% 1/2 W

The voltages printed in red do not apply to these instruments.

The covers, panels, and trim listed in the parts list are for brown instruments.

Covers, panels. and trim for blue instruments are listed below:

403B-2A Front Panel

5060 -0705

5000-0702

5000-5388

5020-5388

Top Cover Assy

Side Cover

Bottom Cover

Meter Trim

·:MANUAl CHANGES

Model 4038

AC VOLTMETER

Manual Part No. 00403-90010

• New or Revised Item

ERRATA:

Page 1-1, Table 1-1. Add the following to Model 403B and 403B Option 01 accuracy specification tables: "On the 300 V range, accuracy is not specified above

100 kHz."

Page 5-3, Para.5-15d. Change frequency from 5 Hz to

10 Hz.

Page 5-3, Paragraph 5-16(b). Change the last sentence to agree with the following: "The 403B meter deflection on any range should be less than 3% of full scale with battery operation and less than 8% of full scale with an ac source

(see Paragraph 3~)."

Page 5-9/5-10, Figure 5~.

Add ferrite bead, A 1 L1, to emitter of A 1Q6.

Change adjustment designation under A3C3 to "CAL 30 V,

300 KC."

Section' V, Performance Check Test Card. Number 4,

Noise Check results should read

"<

3% of full scale deflection on any range" for Battery Operation and

"<

8% of full scale deflection on any range" for ac operation.

Page 6-2, Table 6-1.

Add Ref.

Desig. L1, Part No.

9170~016, ferrite bead. Add L 1 to 403B-65A assembly.

Page 6-3, Table 6-1. Change description of S1 to read

"Assembly RANGE switch: 3 sect 12 pos; includes Cl,

C6, A3 and R 17 thru R23."

Page 6-4, Table 6-1. Operating and Service Manual is Part

No. 00403-90010.

Page 6-5, Table 6-2. Item No.8 is Part No. 5000.a569

Cover Assy: Bottom.

I

Page 5-9/5-10, Figure 5-8. Add Component Locator for

Al board as in Figure 1.

CHANGE NO.1: Applies to all instruments.

Page 6-2, Table 6-1. Change Part No. of CR3, CR4 to

1901.0518. Previous Part is hard to obtain; this is the preferred replacement.

CHANGE NO.2: Applies to 4038 Serial No's.

0986A 15246 and greater and 4038 Option 01 Serial No's.

0986A 15346 and greater.

Page 6-3, Table 6-1. Change R13 to Part No. 0687-2231,

22 K ± 10% 1/2 W. This change desensitizes Ql from bias fluctuation.

Figure 1. Component Locator..

tip

AI

Port No. 403 B -65A

Rev.B

NOTE: See Figure 5-1 for additional location information.

17 September 1975

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--1

Cll

M-

e

- R I 6 -

-RI~-

- R I 4 -

- R I I -

RI3 Rll

I

I I

(0

- C R -

- C R l -

- R 9 - -

- R 8 - -

- R 1 -

-RIO-

- ' 8 -

- R 6 -

- C 1 -

ClO

I

-CR4-

-»~,E~ ~

• • T .

- R 4 0 -

I

I

I

R3l

I

I

CI9

-CR3e e

I

-R31~

Rl8

~ CI~

I

~16) 'Ri

I

I

R46

I

CAL 1 mV

2 MHz

~----~- METER CAL

1 mV RANGE

9

I

R34

-R24-

~

~

"21

I

1

"'!.l

"----"

~.

LOOP GAIN

ADJ

Supplement A for 00403-900 10

00403-90010

HEWLETT

iii

PACKARD

PRINTED IN U.S.A.