HP 432a, 478a schematic

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TM 9-6625-2469-15

DEPARTMENT OF THE ARMY TECHNICAL MANUAL

OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT,

GENERAL SUPPORT AND DEPOT MAINTENANCE

MANUAL [INCLUDING REPAIR PARTS]

POWER METER

[HEWLETT-PACKARD MODEL 432A]

[4931-436-4883]

THERMISTOR MOUNT

[HEWLETT-PACKARD MODEL 478A]

[6625-866-1955]

HEADQUARTERS, DEPARTMENT OF THE ARMY

DECEMBER 1969

WE 20780

WARNING

HIGH VOLTAGE

is used in the operation of this equipment.

DEATH ON CONTACT

may result if personnel fail to observe safety precautions.

Learn the areas containing high voltage

in each piece of equipment.

Be careful not to contact high-voltage or 115-volt ac input connections

when installing or operating this equipment.

Before working inside the equipment, turn power off and ground points of

high potential before touching them.

POWER METER

432A

SERIAL PREFIX: 914-

This manual applies directly to HP Model 432A Power Meters having serial prefix number 914.

SERIAL PREFIXES NOT LISTED

For serial prefixes above 914, a “Manual Changes” sheet is included with this manual. For HP Model 432A with serial prefix below 914 refer to Appendix A.

HEWLETT-PACKARD COMPANY

1968

U.S.A

(This manual contains copyright material.)

TM 9-6625-2469-15

TECHNICAL MANUAL )

)

No. 9-6625-2469-15)

THERMISTOR Mount (HEWLETT-PACKARD MODEL 478A)

HEADQUARTERS

DEPARTMENT OF THE ARMY

Washington, D.C.

(4931-436-4883)

(6625-866-1955)

22 December 1969

Table of Contents List of Tables

POWER

METER

432A

Model 432A

Section

GENERAL INFORMATION . . . . . . . . . . . . . . 1-1

1-1. Description . . . . . . . . . . . . . . . . . . . .1-1

1-5.

INSTALLATION . . . . . . . . . . . . . . . . . . . . . .2-1

2-1. Initial Inspection . . . . . . . . . . . . . .2-1

2-2. Mechanical Check . . . . . . . . . . . . 2-1

2-4.

2-6. Damage Claims . . . . . . . . . . . .2-1

2-9. Three-Conductor Power Cable . . . . 2-1

2-12. Primary Power Requirements . . . . 2-1

2-14.

2-16. Battery Installation. . . . . . . . . . . 2-1

2-17. 2-19.

2-21. Combining Case . . . . . . . . . . . .2-1

2-23. Adapter Frames . . . . . . . . . . .2-2

2-25. Repacking for Shipment . . . . . . . . . . 2-2

OPERATING INFORMATION.. . . . . . . . . . . 3-1

III

3-1. 3-4.

3-12. 3-17.

3-23. 3-27.

3-28. 3-30.

PRINCIPLES OF OPERATION . . . . . . . . . 4-1

4-1.

4-5. Functional Block Diagram . . . . . . . . 4-1

Instrument Identification . . . . . . . . . 1-1

Performance Checks . . . . . . . . . . 2-1

Internal Battery Operation . . . . . . . 2-1

Battery Storage . . . . . . . . . . . . . . 2-1

Rack Mounting . . . . . . . . . . . . . . . .2-1

Introduction . . . . . . . . . . . . . . . . . ...3-1

Controls, Connectors, and

Indicators . . . . . . . . . . . . . . . . . . ...3-1

Battery Operation . . . . . . . . . . . . . ..3-1

Microwave Power Measurement

Accuracy . . . . . . . . . . . . . . . . . . . ...3-2

Calibrator Factor and Effective

Efficiency . . . . . . . . . . . . . . . . . . ...3-2

Precision Power Measurement . . . 3-2

General . . . . . . . . . . . . . . . . . . . . . 3-2

Measurement Procedure . . . . . . 3-2

Simplified Description . . . . . . . . . . . . 4-1

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . 5-1

5-1. Introduction . . . . . . . . . . . . . . . . . . . . . 5-1

5-3.

Content . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5-4. Performance Tests . . . . . . . . . . 5-1

5-6.

5-10. Test Equipment . . . . . . . . . . . . . . 5-1

5-12. 5-14. 432 A Performance Tests

Adjustments . . . . . . . . . . . . . . . . . 5-1

Service Information . . . . . . . . . . 5-1

with 8477A Calibrator. . . . . . . . . 5-1

Page Section

MAINTENANCE (Cont.)

5-15.

5-16. Meter Accuracy Test . . . . . . . . . 5-1

5-17.

5-18. Meter Linearity Check . . . . . . . 5-2

5-19.

5-20. Fine Zero Range Check . . . . . . 5-3

5-21. 432 Calibration without

5-24. Calibration Procedure 1 . . . . . . 5-3

5-26. 5-27. 5-29.

5-30. Top Cover Replacement . . . . . . 5-8

5-31. 5-32. Bottom Cover Replacement . . . 5-8

5-33. Adjustment Procedures . . . . . . . . . 5-8

5-34. Initial Setup . . . . . . . . . . . . . . . . . 5-8

5-35. Mechanical Meter Adjustment . 5-8

5-36. Bridge Amplifier Tests . . . . . . . 5-9

5-37. Meter and Recorder 5-38. Battery Charger Adjustment 5-39.

5-40. Isolating Trouble in Transistor

5-46. Out-of-Circuit Testing . . . . . . . 5-10

5-48. Component Replacement in 5-50.

5-52.

REPLACEABLE PARTS . . . . . . . . . . . . . ...6-1

6-1. 6-3.

TROUBLESHOOTING. SCHEMATICS.

VII

AND COMPONENT tiCATIONS . . . . . . . . . 7-1

7-1. Introduction . . . . . . . . . . . . . . . . . ...7-1

7-5.

7-8. Schematics . . . . . . . . . . . . . . . . . . ...7-1

7-12. AIAl Auto Zero Assembly . . . . . . . 7-1

7-14. Test Conditions . . . . . . . . . . . . . . ...7-1

Page

Initial Setup . . . . . . . . . . . . . . . . . 5-1

Calibration Factor Test . . . . . . 5-2

Zero Carryover Test . . . . . . . . 5-2

8477A Calibrator . . . . . . . . . 5-3

Calibration Procedure 2 . . . . . .

Cover Removal and Replacement 5-8

Top Cover Removal . . . . . . . . . . 5-8

Bottom Cover Removal . . . . . . . 5-8

Output Calibration . . . . . . . 5-9

(Option 01 Only) . . . . . . . . . . 5-9

Battery Removal . . . . . . . . . . . . 5-10

Circuits . . . . . . . . . . . . . . . . . . . . 5-10

Etched Circuits . . . . . . . . . . . . . 5-13

Axial-Lead Components . . . . . . 5-13

Other Components . . . . . . . . . . . 5-13

Introduction . . . . . . . . . . . . . . . . . ...6-1

Ordering Information . . . . . . . . . . . . 6-1

Troubleshooting . . . . . . . . . . . . . . ...7-1

5-8

Number 1-1.

Specifications, . . . . . . . . . . . . . . . . . . . ...1-1

1-2.

Thermistor Mounts forthe 432A . . . . . . 1-2

Recommended Test Equipment . . . . . . . . 5-0

5-1.

Meter Accuracy Test . . . . . . . . . . . . . ...5-2

5-2.

Calibration Factor Test..... . . . . . . . . . 5-2

5-3. 5-4. 5-5.

5-6. 5-7.

6-1. 6-2. 6-3.

Performance Test Card... . . . . . . . . . . . 5-5

Out-of-Circuit Transistor Resistance

Measurements . . . . . . . . . . . . . . . . . . ...5-11

Etched Circuit Soldering’Equipment . . . 5-13

Safe Ohmmeter Range for Transistor

Resistance Measurements . . . . . . . . . . 5-13

Reference Designation Index . . . . . . . . . 6-2

Replaceable Parts . . . . . . . . . . . . . . . . ...6-12

Code List of Manufacturers . . . . . . . . . . 6-15

Title

LIST OF TABLES

Page

Number Title Page

7-1. Schematic Notes . . . . . . . . . . . . . . . . . ...7-2

7-2. Overall Troubleshooting . . . . . . . . . . . . . 7-5

7-3. RF Bridge Troubleshooting . . . . . . . . . . . 7-6

7-4.

7-5. Auto-Zero Troubleshooting. . . . . . . . . . . 7-7

7-6.

7-7. 5 kHz Multivibrator Troubleshooting . . 7-7

7-8. Range Amplifier Troubleshooting . . . . . 7-7

7-9. 7-10. Pulse Width Modulator and Meter

7-11. Power Supply Troubleshooting . . . . . . . . 7-9

iii

Compensation Bridge Troubleshooting.. 7-6 Chopping andSumm ing Circuit

Troubleshooting . . . . . . . . . . . . . . . . . ...7-7

Calibration Factor Amplifier

Troubleshooting . . . . . . . . . . . . . . . ..,. ..7-7

Troubleshooting . . . . . . . . . . . . . . . . ...7-7

Model 432A

Number 1-1.

HP Model 432A Power Meter . . . . . . . . . . . . 1-0

1-2.

Instrument Identification . . . . . . . . . . . . . . . 1-1

Sub- module Installation in Rack

2-1. 2-2.

3-1. 3-2.

3-3. 3-4.

4-1. 4-2. 4-3.

4-4. 4-5.

5-1. 5-2.

5-3.

5-4.

Adapter Frame . . . . . . . . . . . . . . . . . ...2-2

HP Model 1051A Combining Case

Instrument Installation . . . . . . . . . . . ...2-2

Precision Power Measurements . . . . . . . . . . 3-3

Front Panel Controls, Connectors

and Indicators . . . . . . . . . . . . . . . . . . . . ...3-4

Rear Panel Controls and Connectors . . . . . . 3-6

Turn On and Zeroing Procedure . . . . . . ...3-8

Model 432A Simplified Block Diagram. . . . 4-0

Model 432A Block Diagram. . . . . . . . . . . . ...4-3

Mode1 432A RF Bridge Talking Schematic. . 4-4 Model 432A Meter Logic Talking

Schematic . . . . . . . . . . . . . . . . . . . . . . . . ...4-6

Model 432A Power Supply Talking

Schematic . . . . . . . . . . . . . . . . . . . . . . . . .4-8

Check and Adjustment Test Setup . . . . . . . . . 5-1

Zero Carryover Test Setup . . . . . . . . . . . . . . 5-3

Bridge Amplifier Test,... . . . . . . . . . . . ...5-10

Transistor Biasing and Operating

Chmacteristics . . . . . . . . . . . . . ...5-12

LIST OF ILLUSTRATIONS

Page

Number

7-1. Servicing Block Diagram . . . . . . . . . . . . 7-3

Model 432A Top Internal View . . . . . . . . . . . 7-4

7-2.

Mode1 432A Waveforms . . . . . . . . . . . . ...7-4

7-3.

Mode1 432A Test Point Locations . . . . . . . . 7-5

7-4.

Model 432A Bottom View,

7-5. 7-6.

7-7. 7-8.

7-9. RF and Compensation Bridge

7-10. Mode1 432A Switches . . . . . . . . . . . . . . ...7-12

7-11. A2 Meter Logic Assembly,

7-12. Meter Logic Schematic Diagram . . . . . . . . . 7-13

7-13. A2 Meter Logic Assembly, Power 7-14. A7 Battery Charging Circuit (Option 0l)

7-15. Power Supply, Schematic Diagram . . . . . .7-l5

7-16. Thermistor Cable Wiring Diagram . . . . . . . 7-16

A1-1. A2 Meter Logic, Component Locations . .. A1-2 A1-2. A2 Meter Logic Assembly, Power

A1-3. Meter Logic Schematic Diagram . . . . . . .. A1-3

Component Locations . . . . . . . . . . . . ...7-6

Mode1 432A Front Panel Interior . . . . . . . 7-6

Al Bridge Assembly,

Component Locations . . . . . . . . . . . . . . . 7-10

Mode1 432A Rear Panel Interior . . . . . . . . . 7-10

Schematic Diagram . . . . . . . . . . . . ...7-11

Component Locations . . . . . . . . . . . . . . 7-13

Supply Component Locations . . . . . . . 7-15

Component Locations . . . . . . . . . . . . 7-15

Supply, Component Locations . . . . . . .A1-2

List of Illustrations

Page

APPENDIX A.

B. BASIC ISSUE ITEMS LIST

MANUAL CHANGES

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

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

MAINTENANCE ALLOCATION CHART

REPAIR PARTS LIST

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

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

Al-1

B1-1

C1-1

D1-1

GENERAL INFORMATION

Introdution

Incoming Inspection

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

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

--------

OPERATION ---------------------

Precautions -------------

Mechanical Shock

10.

Biasing Thermistors -----

11.

Minimum Input

13.

Average Power

14.

Pulse Energy and Peale

Power 478A/432

15.

Pulse Energy and Peak

Power 478A/431

19.

Drift Precaution --------

21.

Zero-Set RF Power Turned Off For

23.

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

---------

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

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

---------

------ --

Zero-Set ---------------

25.

Thermistor Mount Dis-

connected For Zero-

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

Set

26.

478A/431

478A/432 ----------------

30.

31.

Mount Calibration Data --

33.

-Calibration Factor ------

35.

Effective Efficiency ----

37.

Calibration Data

Application

Thermoelectric Effect ---

43.

Thermoelectric Effect

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

--- - --- - - - -

Error Correction 478A/431

45.

Thermoelectric Error

478A/432

OPERATING PRINCIPLES

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

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

------- ---

47. Circuit Description -----

52. 431-Power Meter

Detection . . . . . . . . . . . . .

54.

432 Power Detection -----

MAINTENANCE

56. Mechanical Shock

58.

Check On Thermistor

60.

Repair

71.

Thermistor Assembly Re-

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

Match

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

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

---------

placement Procedure ---

75.

Removal Procedure -------

76.

Installation Procedure --

Page 8-1

8-1

8-2

8-2 8-2

8-2

8-2 8-2 8-3

8-3 8-3

8-3

8-4 8-4

8-4 8-5

8-5 8-5

8-6

8-5 8-5

8-5 8-6

8-6

8-6 8-6

8-6 8-7

8-8 8-9

8-9

Number Title

1 2

Specifications Methods of Switching Off

RF Output of Various HP Signal Generators

Parts Furnished in

Thermistor Assembly Replacement Kit, HP 00478-600------------------

List of ILLUSTRATIONS

Number

Maximum Power Meter Read-

ing vs PRF for Pulses Shorter than 250 u s ----

Maximum Power Meter Read-

ings vs Duty Cycle for

Pulses Longer than 250 u s ----------------

3 Maximum Power Meter Read-

ing vs Square and Sine

Wave Frequency ----------

Source Impedance Shunting

One RF Thermistor

Mount ------ -------------

Schematic Diagram of a

Model 478A Thermistor Mount when Connected to

a 431 Power Meter --------

Schematic

Model 478A Thermistor Mount when Connected to

a 4,82 Power Meter ----

Check on Model 478A

Thermistor Resistance

Match 8 9

Thermistor Compensation --Model 478A Thermistor

Mount Assembly ----------

HP Model 478A Printed

Circuit A

LIST OF TALBLES

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

Diagram of a

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

SSy Wiring -----

-------

Page 8-2

8-4

8-8

Page

8-3

8-4

8-5

---

8-7

8-7 8-8

8-9

8-10

Section I

Model 432A

Figure 1-1. HP Model 432A POWER METER

Model 432A Section I

SECTION I

GENERAL INFORMATION

1-1. DESCRIPTION.

1-2. The Hewlett-Packard Model 432A Power Meter, with HPtemperature -compensated thermistor mounts, measures RF power from 10 microwatt (-20 dBm) to 10 milliwatts (+10dBm) full scale with 1% of full scale accuracy from 10 MHz to 40 GHz. With a selector switch, the instrument normalizes the power meter reading to compensate for the Calibration Factor of a thermistor mount used for a given measurement. For portable operation, Option 01 instruments have a rechargeable nickel-cadmium battery. See Table 1-1 for complete specifications.

1-5. INSTRUMENT IDENTIFICATION.

1-6. Hewlett-Packard instruments are identified by an 8-digit serial number. The first three digits are the Serial Prefix. To properly match a manual with the instrument to which it applies, the prefix on the instrument must be the same as the pref ix at the front of the manual. If the numbers are different, information is supplied either on yellow Manual Change Supplements, or in an Appendix in the Manual. If the change information is missing, contact your HP Sales Office (Sales Offices are listed at the b a c k of the Manual).

1-3. The Model 432A has provision for dc substitution measurements and for power meter calibration. An output is provided for recorders or digital voltmeter readout.

1-4. Accessories, Two accessories are supplied with the Model 432A Power Meter: a 7. 5-foot (2290 mm) detachable power cable and a 5-foot ( 1520 mm) cable that connects the thermistor mount to the meter. Ther mister mounts are available but not supplied with the power meter (refer to Table 1-2). Table 1-1 lists those accessories supplied and also those available. Figure 1-2. Instrument Identification

Table 1-1. Specifications

Instrument Type: Automatic, self -balancing power

Zero Carryover: Less than +0.5% of f u 11 scale meterforuse with temperature -compensated ther - when zeroed on most sensitive range. mister mount.

Power Range: 7 ranges with full-scale readings of

Fine Zero: Automatic, operated by toggle switch.

10, 30, 100, and 300 µW, 1, 3 and 10 mW; also

calibrated in dBm from -20 dBm to +10 dBm full

Recorder Output: 1.000 volt into open circuit cor scale in 5-dB steps. responds to full-scale meter deflection (1. O on

O,- 1 scale) +0.5%; 1000-ohm output impedance,

Accuracy:

+55

Calibration Factor Control: 13-position switch nor-

±1% of full scale on all ranges (+O°C, to

C).

BNC connector.

RFI: Meets all conditions specified in MIL-I-6181D. realizes meter reading to account for thermistor

mount Calibration Factor. Power: 115 or 230 Vac ±10%, 50 to 400 Hz, 2-1/2 Range: 100% to 88% in l% steps.

watts. Optional rechargeable battery provides up to 20 hours continuous operation. Automatic bat-

Thermistor Mount: External temperature -compen - tery recharge.

sated thermistor mounts required for operation (see Table 1-2).

Weight: Net 6-1/2lb(3kg), shipping 9-1/4lb(4,2kg).

Meter: Taut -band suspension, individually com-

puter-calibrated, mirror-backed scales. Mini - Weight with Optional Battery Pack: Net 9-1/4 lb watt scale more than 4-1 4 inches (108 mm) long.

(4,2 kg), shipping 12 lb (5,5 kg).

1-1

Section I Model 432A

Table 1-1.

1-2

Table 1-2.

Model 432A

Section II

Installation

SECTION II

INSTALLATION

2-1. INITIAL INSPECTION.

MECHANICAL CHECK.

2-2.

2-3. If damage to the shipping carton is evident, ask that the carrier’s agent be present when the instrument

is unpacked. Inspect the instrument for mechanical damage. Also check the cushioning material for signs of severe stress.

2-4. PERFORMANCE CHECKS. 2-5. The electrical performance of the Model 432A

should be verified upon receipt. Performance checks

suitable for incoming inspection are given in Section V, Maintenance.

2-6. DAMAGE CLAIMS. 2-7. If t h e instrument is mechanically damaged in

transit, notify the carrier and the nearest HewlettPackard field off ice immediately. A list of field offices

is at the back of this manual. Retain the shipping carton and padding material for the carrier’s inspection. The field off ice will arrange for replacement or repair of your instrument without waiting for claim settlements against the carrier,

2-8. Before shipment this instrument was inspected and found free of mechanical and electrical defects. If there is any def iciency, or if electrical performance is not within specifications, notify your nearest Hewlett -Packard Sales and Service Off ice.

2-9. THREE-CONDUCTOR POWER CABLE.

To protect operating personnel, t h e National

2-10.

Electrical Manufacturers Association (NE MA) recommends that the instrument panel and cab in et be grounded.

All Hewlett-Packard instruments are equipped with a three-conductor power cable which, when plugged into an appropriate receptacle, grounds the instrument.

The off set pin on the power cable

three-prong connector is the ground wire. 2-11. To preserve the protection feature when oper-

ating the instrument from a two-connector outlet, use a three-prong to two-prong adapter and connect the green pigtail on the adapter to ground.

2-12. PRIMARY POWER REQUIREMENTS.

The Model 432A operates from 115 or 230 volts

2-13.

ac line voltage.

Line frequency may vary from 50 to 400 Hz. A slide switch on the rear panel is moved to the correct position for the I in e voltage available. Before operating the equipment, ensure that the fuse installed in the instrument corresponds to the value marked on the panel for the line voltage available ( 1/8

amp slow-blow).

2-14. INTERNAL BATTERY OPERATION.

Model 432A Option 01 instruments contain an

2-15.

internal battery and a battery charging assembly. By connecting the 432A to an ac source, the battery may be charged overnight. The battery can be maintained in the charging state indefinitely without damage. It will assume its full capacity, 1.25 ampere -hours, and will not charge in excess of that. This enables the instrument to operate for approximately 20 hours continuously without recharging.

2-16. BATTERY INSTALLATION.

a. Set power switch to off and remove power plug

from rear panel,

b. Remove top and bottom, and s i d e instrument

covers.

c. The battery is installed with the terminals toward the right hand side of the instrument when faced from the front. The two terminals on the battery fit into

spaces provided on the circuit board.

d. Using the retaining nuts, fasten the battery firmly

in place. Be careful not to short the battery terminals

at any time as this may cause battery cell damage.

e. Install Assembly A7, battery charging board, in the space provided for it just ahead of the battery.

f. Reinstall instrument covers and adjust circuit.

Instrument is now ready for operation.

2-17. BATTERY STORAGE. 2-18. Store the battery at or below room temperature.

Extended storage at high temperature will reduce the

cell charge, but will not damage the battery if t h e storage temperature is below 140” F. Install the battery in the instrument and recharge before using Model 432A in battery operation.

2-19. RACK MOUNTING.

Model 432A is narrower than full-rack width.

2-20.

It is what is termed a sub-modular unit. When used alone, the instrument can be bench mounted. When used in combination with other sub-modular units it may be bench or rack mounted. The HP 1051A and

1052A Combining Cases and Rack Adapter Frames are designed specifically for this purpose.

2-21. COMBINING CASE.

2-22. A model 1051A Combining Case is shown in Figure 2-1. This case is full rack width and accepts

varying combinations of submodular instruments. The

case, purchased separately, is provided with a rack mount ing kit.

The combining case will hold three

2-1

Section II Installation

Model 432A

instruments the same size as the Model 432A. When instruments are installed in the combining case, they may be installed or removed individually.

2-23. ADAPTER FRAMES.

2-24. The 5060-0797 Adapter Frame is shown in Figure 2-2. The frame will accept a variety of submod ular units in a manner suitable for rack mounting.

Submodular units, in combination with anv necessarv

spacers are assembled within the frame.

A submod-

ular unit cannot be removed individually.

2-25. REPACKING FOR SHIPMENT.

Figure 2-1.

Sub -module Installation in

Rack Adapter Frame

2-26. When returning an instrument Packard use the original packing material.

to HewlettIf the orig -

inal foam type packing material is not available, contact an authorized HP Sales Office for assistance. If this is not possible, first protect the instrument surfaces by wrapping in heavy kraft paper or with sheets of cardboard flat against the instrument, Protect the instrument on all s i d e s using approximately 4“ of

packing material and pack in a durable container. Mark

the container clearly for proper handling and insure adequately before shipping.

2-27. When an instrument is returned to HP for ser-

vice or repair, attach atagtothe instrument specifying the owner and desired action. All correspondence

should identify the instrument by model number and

full eight -digit serial number.

2-2

Figure 2-2. HP Model 1051A Combining Case Instrument Installation

Model 432A

Operating Instructions

Section III

SECTION Ill

OPERATING INFORMATION

3-1. INTRODUCTION.

3-2. The Model 432A Power Meter operates with HP temperature-compensated thermistor mounts such as the 8478B and 478A Coaxial, and 486A Waveguide series. The frequency range of the 432A with these mounts in 50-ohm coaxial systems is 10 MHz to 18 GHz; in waveguide systems it is 2.6 GHz to 40 GHz. Fullscale power ranges are 10 microwatts to 10milliwatts (-20 dBm to +10dBm). Extended measurements may be made to 1 microwatt (-30 dBm). The total meas-

urement capacity of the instrument is divided into

seven ranges, selected by a f rent-panel RANGE switch. 3-3. This section describes general operating pro-

cedures and error analysis in microwave power messurement. Application Note 64, available on request from Hewlett-Packard, is a detailed analysis of microwave power measurement problems and techniques.

3-4. CONTROLS, CONNECTORS, AND

INDICATORS.

3-5. The front and rear panel controls, connectors, and indicators are explained in Figure 3-2. The des-

c riptions are keyed to the corresponding items which are indicated on the figure.

3-6, The COARSE ZERO and FINE ZERO controls zero the meter. Zero carry-over from the most sen-

sitive range to the other six ranges is within ± 0.5%. When the RANGE switch is set to COARSE ZERO, the meter indicates thermistor bridge unbalance, and the front panel COARSE ZERO adjust is for initial bridge balance. For best results, FINE ZERO the 432A on the particular meter range in use.

3-7. The CALIBRATION FACTOR switch provides discrete amounts of compensation for measurement uncertainties related to SWR and thermistor mount efficiency. The Calibration Factor value permits direct meter reading of the RF power delivered to an

impedance equal to the characteristic impedance (Z of the transmission line between the thermistor mount

and the RF source. Calibration Factor values a r e marked on the label of each 8478B, 478A, or 486A

Thermistor Mount.

For further details, see Para-

graph 3-23.

3-8. The MOUNT RESISTANCE switch on the front panel compensates f o r t h r e e types of thermistor

mounts. Model 486A waveguide mounts can be used by setting the MOUNT RESISTANCE switch to

100Ω

or 200Ω, depending on the thermistor mount used (refer to Table 1-2). The

200Ω position is used with

Models 478A and 8478B Thermistor Mounts. 3-9. The rear-panel BNC connector lab e 1 ed RE-

CORDER provides an output voltage linearly propor tional to the meter current; 1 volt into an open cir-

cuit equals full- scale meter deflection. This voltage

is developed across a lK resistor; therefore, when a recorder with a lK input impedance is connected to the RECORDER output, approximately .5 volts will equal full scale deflection. This loading of the RE-

CORDER output has no effect on the accuracy of the 432A panel meter.

3-10. A digital voltmeter can be connected to the rearpanel RECORDER output for more resolution of power

meter readings. When a voltmeter with input impedance greater than 1 megohm is connected to the RE-

CORDER output, 1 volt equals full scale deflection.

3-11. The 432A has two calibration jacks (V vcomp) on the rear panel that can be used for precision power measurements.

Instrument error can be reduced from ±1% ±(0.2% of reading +5µW) of reading, depending on the care taken in measure-

and on the accuracy of auxiliary equipment.

ment,

For further information, see Paragraph 3-27.

3-12. BATTERY OPERATION,

3-13. The Model 432A Option 01 operates from battery and conventional 115- or 230-volt line power. A rechargeable Nickel-Cadmium b a t t e r y is factoryinstalled in Option 01 instruments. The same battery can be ordered and later installed in the basic instrument, thereby modifying the power meter to the Option 01 configuration. The battery installation kit (including battery charging circuit ) may be ordered from the nearest HP Sales Office.

3-14. It is recommended that the Model 432A be bat-

tery -operated for up to 8 hours, and then allowed to

recharge 8 hours, or overnight. Continuous battery operation is possible for up to about 24 hours, but then

)

the battery must be recharged f o r about 24 hours.

3-15. The 432A automatically operates on its internal batteries whenever the ac line power is disconnected and the POWER switch is ON. When the battery ter-

minal voltage decreases far enough to f orce the power

supply voltage regulator out of regulation, then the

meter stops working and the meter indicator points to the red RECHG BAT. To recharge the battery, simply

connect the 432A to ac line power, and turn it ON.

3-16. Battery Storage. Storage of the battery at or

below room temperature is best, Extended storage

at temperatures above room temperature will reduce

cell charge, but will not damage the battery; however,

the battery should not be stored where the tempera-

ture exceeds 60” C (+140° F).

RF and

3-1

Section III Operating Instructions

Model 432A

3-17. MICROWAVE POWER MEASUREMENT

ACCURACY.

3-18. A number of factors affect the overall accuracy

of power measurement.

The major sources of error

are mismatch error, RF losses, and instrumentation

error.

3-19. Mismatch Error.

In a practical measurement situation, both the source and thermistor mount have SWR, and the source is seldom matched to the ther mister mount unless a tuner is used. The amount of mismatch loss in any measurement depends on the total SWR present.

The impedance that the source sees is

determined by the acutal thermistor mount impedance,

the electrical length of the line, and the characteristic

impedance of the line, Z

3-20. In general, neither the source nor the thermistor mount has Z are known only as reflection coefficients, mismatch

impedance, and the actual impedances

losses, or SWR. The power delivered to the thermis-

tor mount - and hence the mismatch loss - can only be

described as being somewhere between t w o limits. The uncertainty of power measurement due to mismatch loss increases with SWR. Limits of mismatch loss are generally determined by means of a chart such as

the Mismatch Loss Limits charts in Application Note

64. The total mismatch 1 oss uncertainty in power measurement is determined by algebraically adding

the thermistor mount losses to the uncertainty caused

by source and thermistor mount 2

3-21. RF Losses.

RF losses account for the power

match.

entering the thermistor mount but not dissipated in the detection thermistor element.

Such losses may be in the walls of a waveguide mount, the center conductor of a coaxial mount, capacitor dielectric, poor connections within the mount, or due to radiation.

a load impedance equal to Z

relationship between indicated power and the power

, More accurately, the

available to a Z. load is given by the following equation:

Calibration factor d o e s not compensate for source VSWR, or for multiple reflections between the source and the thermistor mount.

3-26. To minimize mismatch between the source and the thermistor mount without a tuner, insert a low SWR precision attenuator in the transmission line between the thermistor mount and the source. Since the mount impedance (and corresponding SWR) deviates

significnatly only at the high and low ends of a microwave band, it is generally unnecessary to use a tuner. A tuner or other effective means of reducing mismatch error is recommended when the source SWR is high or when more accuracy is required. For further details, there is a complete discussion of microwave power measurement with emphasis on modern techniques, accuracy considerations and sources of error

available in Application Note 64.

3-27. PRECISION POWER

MEASUREMENT.

3-22. Instrumentation Error. The degree of inability

of the instrument to measure the substitution power

supplied to the thermistor mount is called power meter accuracy or instrumentation error. Instrumentation error of the Model 432A is ±1% of full scale, O“C to

+55°c.

3-23. CALIBRATION FACTOR AND EFFECTIVE

EFFICIENCY.

3-24. Calibration factor and effective efficiency are

correction factors for improving power measurement accuracy. Both factors are marked on every HP ther -

mister mount. Calibration factor compensates f o r thermistor mount VSWR and RF losses whenever the thermistor mount is connected to an RF source without

a tuner. Effective efficiency compensates for ther -

mister mount RF losses when a tuner is used in the

measurement system.

3-25. When the 432A CALIBRATION FACTOR selec tor is set to the appropriate factor indicated on the thermistor mount, the power indicated by the meter

is the power that would be delivered by the source to

3-2

3-28. GENERAL.

3-29. Using precision instruments and careful procedures, measurement error can be reduced to ±0.2% of reading +0.5 µW. The technique involves: 1) zero-

ing the bridge circuits and measuring the bridge amplifier output voltage difference with a digital voltmeter, then 2) connecting RF power to the thermistor mount and then measuring the bridge amplifier output voltage difference again, and 3) calculating the power from ‘the two measurements. Figure 3-1 shows the

instrument setup for dc substitution measurement.

Use an HP Model 3440A DVM, with a 3443A Plug-in

Unit or a digital voltmeter with equivalent accuracy,

3-30. MEASUREMENT PROCEDURE.

a. Connect the DVM to the 432A rear panel Vcomp

and V

RF outputs.

Be sure that the digital voltmeter

input is isolated from chasses ground,

b. Turn off, or disconnect the RF power from the

thermistor mount.

Model 432A

Section III

e. Release the FINE ZERO toggle, and turn on, or

reconnect the RF power to the thermistor ,mount.

Figure 3-1.

Precision Power Measurements

3-3

Section III General Information

Model 432A

3-4

Figure 3-2. Front Panel Controls, Connectors and Indicators (Sheet 1 of 2)

Model 432A

Operating Information

Section III

POWER. Instrument power ON/OFF switch;

connects either ac line voltage or internal bat- sion so that meter indicates zero. To adjust tery (Option 01 only) to internal voltage regu - the zero: later circuits. When ac power is on, optional battery charging circuit operates.

COARSE ZERO. Meter zero adjustment; set the indicator falls below zero and comes the RANGE selector to COARSE ZERO, turn back up to zero again. OFF the RF power, and adjust to zero the meter.

RANGE. Power measurement range selector;

selects ranges from 0.01 to 10 milliwatts (-20 to +10dBm). COARSE ZERO setting is used to zero meter with no power applied to ther -

mistor mount.

4. FINE ZERO. Electronic zero that balances the compensation bridge with zero RF input.

To zero m e t e r during operation, close the switch momentarily.

is not applied to the thermistor mount when the

FINE ZERO switch is depressed.

Meter. mount in milliwatts and dBm. To use the dBm

scale, note the value in dBm of the range in use, and subtract from it the reading on the nectorfor 5-1/2 foot cable that connects to the meter dBm scale.

Indicates power input to thermistor meter.

Be sure that RF power

6. Mechanical Meter Zero. Sets meter suspen-

a. Turn POWER switch off. b. Turn the adjustment screw clockwise until

c. Turn the adjustment very slightly counter-

clockwise to free up tbe mechanism from

the adjusting peg.

CALIBRATION FACTOR. Amplifier gain com-

7. pensation selector. Set to correspond to the calibration factor printed on t h e thermistor mount body. See Paragraph 3-23 for m o r e information.

MOUNT RESISTANCE. Se1ects resistance equal to that of mount in use to balance bridges. Table 1-2 lists Hewlett-Packard thermistor mounts and resistances. Set with meter power OFF, when mount is initially connected to the

Thermistor Mount Cable Connector. Input con478A, 8478B, or 486A Thermistor Mounts.

Figure 3-2. Front Panel Controls, Connectors and Indicators (Sheet 2 of 2)

3-5

Section III Operating Information

Model 432A

3-6

Figure 3-3. Rear Panel Controls and Connectors (Sheet 1 of 2)

Model 432A

Operating Information

Section III

Line Fuse. For 115 Vac or for 230 Vac use 1/8 amp slow-blow fuse.

2. Power Cord Input. Use power cord provided, HP 8120 -00?8. Line power limits are 115/230 Vat, 50-400 Hz. Check FUSE rating and

PO-

sition of line voltage slide switch before connetting power.

Line Voltage Slide Switch: Set to line voltage

3. avallable (115 or 230 Vat, 50-400 Hz).

Mounting Hole for Option 02 Model Power Meters.

Thermistor mount cable connector meter. Output impedance is approx.

installed and wired in parallel with f rent-panel connector. Only one mount at a time may be used with the power meter.

VRF Input. Connected directly to RF bridge.

5. Used for calibrating power meter with HP 8477A Power Meter Calibrator. Also used for precision power measurements.

VCOMP Input. Connected directly to compen-

6. sation bridge. Used for calibrating power meter with HP 8477A Power Meter Calibrator. Also used for precision power measurements.

RECORDER OUTPUT. Voltage f r o m meter

7. circuit to be used for recorder or digital volt-

1000Ω.

Figure 3-3. Rear Panel Controls and Connectors (Sheet 2 of 2)

3-7

Section III Operating Information

Model 432A

3-8

Figure 3-4. Turn On and Zeroing Procedure (Sheet 1 of 2)

Model 432A

Operating Information

1. Connect the thermistor mount and cable to 5. Set the RANGE selector to COARSE ZERO and THERMISTOR MOUNT connector. Refer to then zero the meter with the COARSE ZERO Table 1-2 for recommended thermistor mounts screwdriver adjustment. and their frequency ranges.

Note

Meter Mechanical Zero: a. With the instrument turned off, rotate the

meter adjustment screw clockwise until the pointer approaches the zero mark from the left.

b. Continue the clockwise rotation until the

The power meter should be zeroed with the RF power source turned off, or the mount disconnected from the source.

6. Set the range selector to the 0.01 mW range; then depress the FINE ZERO switch until the

meter indicates zero. pointer coincides with the zero mark. If the pointer overshoots, continue rotating the adjustment screw clockwise until the pointer once again approaches the zero mark

Range-to-range zero carryover is 1 ess

Note

from the left. than ±0.5% if the meter zero has been ad-

C. Rotate the adjustment screw about three de-

grees counterclockwise to disengage screw adjustment from the meter suspension.

justed (step 2 above), and the instrument

has been properly zero-set on the sensi -

tive range. For maximum accuracy, zero-

set the power meter on the range to be

used.

Set the MOUNT RES switch to correspond to the operating resistance of thermistor mount

used.

Turn the 432A POWER switch ON. For battery operation, the AC LINE indicator does not turn on.

Set CALIB FACTOR switch to correspond to

7. Calibration Factor imprinted on HP thermistor mount label.

Apply RF power to the thermistor mount. Power

is indicated on the meter directly in mW or dBm.

Section III

Figure 3-4. Turn On and Zeroing Procedure

3-9

4-0

Section IV

Principles of Operation

Figure 4-1.

Model 432A

Principles of Operation

Section IV

SECTION IV

PRINCIPLES OF OPERATION

4-1. SIMPLIFIED DESCRIPTION

4-2. The HP 432A Power Meter consists of two major

sections:

the bridge and meter logic assemblies, The instrument also contains an auto zero circuit which provides for automatic zeroing on any range. A simplified Mock diagram of the HP 432A is shown in

Figure 4-1.

4-3. The bridge section contains circuits which form two self-balancing bridge circuits when a suitable thermistor mount is connected to the 432A. Each bridge is automatically brought to balance by the action of a high gain dc amplifier feeding power to the top of the bridge, The voltage at the top of the RF bridge V

RF is responsive to both input RF power and

ambient temperature changes.. The voltage at the top of the compensation bridge, V only to ambient temperature changes. Knowing V

COMP is responsive

and VCOMP, the RFpower can be calculated. 4-4. The meter logic section processes V

COMP to produce a meter current proportional to

RF power. The sum (V

RF + VCOMP) controls the

width of 5 kHz pulses. The difference (V

RF and

COMP - VRF)

is chopped, amplified and fed to an electronic switch actuated by the controlled width pulses. Therefore, the meter current is pulses of variable height and width with the meter indicating the average current.

(This process produces a meter current proportional

to (V

RF + VCOMP) (VRF - VCOMP ). Paragraph 4-10

explains why this is necessary.

4-8. If ambient temperature causes changes in the

thermistor resistance, the bridge circuits respond by

applying an error voltage to the bridges to maintain bridge balance.

The voltage at the top of the RF bridge is dependent upon both ambient temperature and the RF input. The voltage at the top of the compensation bridge is dependent upon the ambient temperature only. The power meter reading is brought to zero with no applied RF power by making V

COMP

equal to VRF so (VCOMP - VRF) equals zero. Since ambient temperature causes both thermistors to respond similarly, there will be no net difference between the amplifier output voltages. Therefore, any difference in output voltages from the bridges is now due to RF power absorbed by the thermistor mount.

4-9. The RF bridge voltage, V tion bridge voltage, V

COMP, contain the “RF power”

RF, and the compensa-

information. To provide a meter reading proportional

to RF power the dc voltages (V

RF, VCOMP) must be

further processed by the meter logic circuits.

4-10. The required processing is derived as follows: P. is absorbed power needed by the RF thermistor to bring its resistance to R ohms (100 or 200 ohms). P. consists of two components: RF power from the signal source to be measured and dc power supplied by the 432A. The self balancing action of the bridge circuit automatically adjusts the dc power so that the

4-5. FUNCTIONAL BLOCK DIAGRAM

4-6. A functional block of the 432A power meter is shown in Figure 4-2. The instrument comprises two major assemblies: bridge assembly Al and meter logic assembly A2.

Auto zero circuit Al Al, which provides for automatic zeroing of the instruemtn, is included as part of logic assembly Al.

4-7. The thermistor bridges are biased with direct current from the bridge amplifiers.

Each bridge

amplifier supplies enough heating current to br ing the

thermistor resistance to 100 or 200 ohms, depending

upon the setting of the MOUNT RESISTANCE switch on the 432A. If one of the thermistor bridges is unbalanced due to incorrect thermistor resistance, an error voltage occurs and is amplified by the bridge amplifier. The error voltage is applied to the top of the bridge and changes the power dissipation of the negative temperature coefficient thermistor.

The

change of power dissipation causes the resistance to

the thermistor to change in the direction required to

balance the bridge. Application of RF power to the

RF bridge heats the thermistor and lowers its resis-

tance. The bridge circuit responds by reducing the dc voltage applied to the top of the bridge thus main-

taining bridge balance.

4-11. RFpower can redetermined by measuring VRF with and without applied RF power and then doing some arithmetic. But this power measuring scheme is neither convenient nor temperature compensated (since P. changes with temperature). The 432A introduces another thermistor bridge circuit exposed to the same ambient temperature but not RF power. This circuit includes adjustments (COARSE and FINE

ZERO) so that the dc voltage V bridge can be set equal to V RF and compensation thermistors, V

power) and V erature fluctuation.

COMP remain equal with ambient temp-

They cliff er only when the RF

COMP at the top of its

RF. Assuming matched

(with no RF

power to be measured is applied to the RF thermistor. Thus, we have

4-1

Section IV Principles of Operation

Combining equations, we have

4-12. Thus an RF power measurement reduces to setting V

COMP = V RF

measuring V

COMP and VRF, and computing with the

(with zero RF power) initially,

above formula. The 432A carries out the computation by forming the indicated sum and difference, perform-

ing the multiplication and displaying the result on a meter.

4-13. The meter logic circuits change the two dc voltages to two pulse signals which contain all the RF power information. One of the signals will be a square

wave whose amplitude is proportional to V

RF. The other signal will have a pulse width pro-

V portional to V

4-14. The V

COMP

= VRF .

COMP-VRF signal is obtained by taking

COMP -

the dc voltage outputs from the Al assembly and applying them to a chopper circuit. This chopper cir-

cuit is driven by a 5-kHz multivibrator. The output

of the chopper is a square wave signal whose amplitude is proportional to V

COMP - VRF. The output of

the chopper is coupled to the range amplifier and then to the calibration factor amplifier. The amplification that the signal receives in these two amplifiers depends upon the setting of the RANGE switch and the

CALIBRATION FACTOR switch.

The output of the

calibration factor amplifier is V. This current is fed to the electronic switch. A square wave current with

amplitude proportional to (V

COMP - VRF).

Model 432A

4-15. The V

COMP + VRF signal is obtained by taking

the two dc voltages from Al assembly through a summing circuit and feeding this voltage to a voltage-totime converter.

The voltage-to-time converter is driven by a 5-kHz multivibrator. The output of the voltage-to-time converter is a signal whose pulse width is proportional to the sum of V

COMP + VRF.

This signal controls the electronic switch. From the

COMP - VRF and V COMP + VRF inputs, the elec-

V tronic switch provides a 5-kHz pulse train whose amp-

litude is proportional to V

width is proportional to V

COMP-VRF and whose pulse

COMP + VRF. The pulse

width is always 90 msec or less.

4-16. The bias circuit switch and filter provides a zero current reference for the meter circuit. This is accomplished by controlling the dc bias to the first stage of the calibration factor amplifier. This circuit, in effect, restores the dc component to the square wave which has been amplified by ac coupled amplifiers.

4-17. The meter is 0-1 mA, full-scale meter that

has a capacitor across its terminals. The capacitor

integrates the output pulses from the current switch so the current into the meter is proportional to the

time average of the input pulses. That is, the input

current to the meter is proportional to the product of

4-18. The output from the meter is further filtered so the voltage at the rear panel RECORDER output is suitable for use with either a digital voltmeter or X-Y recorder. The RECORDER output voltage is returned to the compensation bridge through the automatic zero circuit when the FINE ZERO switch is depressed. The automatic zero circuit holds a correction voltage at the input of the compensation bridge amplifier, so when the RF is zero, the meter indication will also be zero.

4-2

Model 432A

4-3

Principles of Operation

Section IV

Figure 4-2.

4-4

Section IV

Principles of Operation

Figure 4-3.

Model 432A

4-5

Figure 4-3.

Principles of Operation

Section

4-6

Section IV

Principles of Operation

Figure 4-4.

Model 432A

4-7

Principles of Operation

Section IV

Figure 4-4.

4-8

Section IV

Principles of Operation

Figure 4-5.

Model 432A

4-9

Principles of Operation

Section IV

Figure 4-5.

Section V

Maintenance

Model 432A

Table 5-1.

5-0

Figure 5-2

Model 432A

SECTION V

MAINTENANCE

5-1. INTRODUCTION.

5-2. This section provides information for perfor mance testing, adjusting, troubleshooting and repairing the 432A Power Meter. instrument to be checked for conformance to specifications. If performance is not within specifications, adjust or troubleshoot the instrument.

5-3. CONTENT.

5-4. PERFORMANCE TESTS . 5-5. The procedures test power meter performance

for incoming inspection, periodic evaluation, calibration and troubleshooting, Specifications in Table 1-1

are the performance standards. If the power meter fails to meet any of the performance test specifications. refer to the troubleshooting diagrams.

Performance tests allow the

Section V

Maintenance

Figure 5-1. Check and Adjustment Test Set -up

5-6. ADJUSTMENTS

5-7. Procedures describe the adjustments necessary to calibrate the power meter. Adjust the power meter only when it is determined that the meter is out of adjustment, and not malfunctioning due to a circuit failure.

5-8. To avoid errors due to possible ground loop currents, isolate the power meter from ground used for other auxiliary equipment. A power plug adapter that removes the ground connection at the line outlet can be used to isolate the power meter.

5-9. Several circuit components are factory-selected to meet specific circuit requirements. The factory selected parts are indicated on the schematic diagrams.

5-10. TEST EQUIPMENT. 5-11. Instruments and accessories required for ad-

justing and testing the power meter are listed and briefly described in Table 5-1. Instruments used to maintain the instrument must m e e t or exceed the specifications given.

5-12. SERVICE INFORMATION.

5-13. Service information in the f o r m of troubleshooting, waveforms, schematics, and component 10cations are given in Section VII. Also, an overall system block diagram is included which contains keyed numbers corresponding to the test points.

5-14. 432A

PERFORMANCE TESTS

WITH 8477A CALIBRATOR

5-15.

INITIAL SET-UP.

a. Connect the 8477A outputs to the 432A inputs as

shown in Figure 5-1. Use appropriate test equipment

as listed in Table 5-1.

b. If necessary, mechanically zero the meter move-

ment as follows:

(1) With instrument turned off, rotate meter adjust-

ment screw clockwise until pointer approaches zero mark from the left.

(2) Continue rotating clockwise until pointer coin-

cides with zero mark. If pointer overshoots,

continue rotating adjustment screw clockwise until pointer once again approaches zero mark from the left.

(3) Rotate adjustment screw about three degrees

counterclockwise to disengage screw adjustment from meter suspension.

5-16. METER ACCURACY TEST.

a. Set the 8477A Calibrator controls as follows:

POWER . . . . . . . . . . . . . . . . . . . . . . . . . .. 0.0lmW

FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

ZERO/TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ZERO

b. Set the 432A controls as follows:

MOUNT RESISTANCE.. . . . . . . . . . . . . . . . . . .

RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.0lmW

POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ON

CALIBRATION FACTOR . . . . . . . . . . . . . . . . . . . ...100%

200Ω

..200Ω

5-1

Section V Maintenance

Model 432A

c. Adjust 8477A ZERO knob for 0 volts

cation on the DVM.

d. Set the 8477A controls as follows:

POWER . . . . . . . . . . . . . . . . . . . . . . . .

ZERO/TEST . . . . . . . . . . . . . . . . . . . . . . . . .

e. The digital voltmeter should indicate 1000 ±10

millivolts.

f. The 432A meter should indicate full scale ±1/2

division.

g. Repeat steps d through f for each of the other ranges. Set the power meter range selector to the position indicated in Column 1 of Table 5-2, and set the 8477A meter reading selector to the corresponding position indicated in Column 2 of Table 5-2. In each case, the meter indications should correspond to those

shown in Table 5-2, Columns 3 and 4.

Table 5-2. Meter Accuracy Test

±2 mV indi -

.. 0.01mW

TEST

. . . . .

f. Repeat steps d and e for each position of the CALIBRATION FACTOR selector. In each case, the digital voltmeter should indicate the voltage shown in the second column of Table 5-3 for the CALIBRATION FACTOR shown in the first column.

Table 5-3. Calibration Factor Test

5-17. CALIBRATION FACTOR TEST.

a. Set 432A controls as follows:

RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CAL FACTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MOUNT RESISTANCE . . . . . . . . . . . . . . . . . . . ...2000

b. Set 8477A controls as follows:

FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ZERO/TEST Switch . . . . . . . . . . . . . . . . . . . . . . . .. TEST

POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.lmW

c. Set 8477A ZERO control sothatthe digital volt-

meter reads 1000 ±2 mV.

d. Set the calibration factor selector to 89%. e. The digital voltmeter should indicate 989 ±10

millivolts.

0.1 mW .88%

..200Ω

5-18. METER LINEARITY CHECK.

a. Set the 8477A POWER (MW) selector to 1 mW,

and FUNCTION to

b. Set the 432A RANGE selector to 3 mW, MOUNT

RESISTANCE to

c. The 432A meter should indicate 1 mW ±1/2

division.

d. Set the 8477A POWER (MW) selector to 2 mW.

e. The 432A meter should indicate 2

division.

f. Set the 8477A POWER (MW) selector

g. The 432A m e t e r should indicate 3

division.

5-19. ZERO CARRYOVER TEST.

a. Disconnect the 432A from the 8477A. b. Turn the 432A power OFF, and connect the ther -

mister mount cable to a thermistor mount.

200Ω, ZERO/TEST switch to TEST.

200Ω.

mW ±1/2

to 3 mW.

mW ±1/2

5-2

Model 432A

Figure 5-2. Zero Carryover Test Setup

Set the

432A Power Meter MOUNT RESISTANCE selector to the resistance shown on the thermistor mount,

d. Turn ON the 432A power. e. Connect 141A through ftiltering network to rear

of 432A as shown in Figure 5-2.

Set 141A controls

as follows:

INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DC

Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . .

SWEEPT ICE . . . . . . . . . . . . . . . . . . . . . . . . . .

TRIGGER LEVEL . . . . . . . .

max clockwise (free run)

1 mV/cm 2 see/cm

f. Zero the 432A as follows:

1) Set the RANGE selector maximum cw to COARSE ZERO.

2) Set the COARSE ZERO screwdriver adjust so that the meter indicates zero.

3) Set 432 ARANGE switch to .01 mW. Depress the FINE ZERO switch. The meter indication should to to zero without overshoot.

g. Rotate the RANGE switch clockwise, one step at a time, while the oscilloscope is sweeping. On each 432 A range, the scope trace should be within .0lmW divisions (±5 mV) from where it was on the .01 mWrange,

5-20. FINE ZERO RANGE CHECK.

a. Set the 432A RANGE selector to 0.3 mW. Leave

the thermistor mount connected to the cable, and the

MOUNT RESISTANCE selector set to correspond to

the resistance of the mount used.

b. Depress the FINE ZERO switch.

c. Slowly turn the COARSE ZERO screwdriver adjustment counterclockwise until the meter will no

longer zero. The FINE zero circuit is at one end of its range.

d. Release FINE ZERO.

e. Set the COARSE ZERO screwdriver adjustment so that the meter indicates full scale on the 0-3 scale (0.3 ‘mW range).

Section V Maintenance

f. Depress FINE ZERO switch (the fine zero circuit is at the other end of its range). Meter should indicate below 2 on the 0-3 scale. Record the indication.

g. Release FINE ZERO.

h. Rotate RANGE switch to COARSE ZERO position.

The fine zero circuit is now in the center of its range. The meter reading should be (1.5 + reading of +1/2 of

reading in step f, ±0.1 on the 0-3 scale.

5-21. 432A CALIBRATION WITHOUT 8477A

CALIBRATOR

5-22. The 432A Power Meter can be calibrated without an 8477A Calibrator using a method similar to the

precision power method outlined in Paragraph 3-27.

5-23. A major difference between the two measurements is that external power need not be applied when calibrating the instrument. Normally, in a stable environment, the V

output voltage remains con-

COMP

stant, not being affected by external RF power; only the V

RF output varies during power measurement.

Since the power that the meter indicates is proportional to V to indicate a power also by holding V

varying V

COMP and VRF, we can cause the meter

RF constant and

COMP. This is easily done on the 432A by

turning the COARSE ZERO control. Two calibration procedures are given below.

5-24. CALIBRATION PROCEDURE 1.

a. Connect thermistor mount to power meter; let

instrument warm up for at least 10 minutes.

b. Select range which instrument is to be calibrated on. Note: ranges below 0.3 mW require a precise differential voltmeter capable of resolving 1 µV. The HP 740B DC Standard/A Voltmeter, which has an accuracy of ±(0.005% of reading ±0.0004%ofrange ±1µV) is recommended. A digital voltmeter is adequate for the 1.0 mW and higher ranges.

c. Connect Differential Voltmeter (or DVM differentially) between the V on the rear panel. See Figure 3-3 for location of V and VCOMP outputs.

d. While pressing the FINE ZERO switch, measure and record V

0. (V. is the difference of the bridge

voltages with no power applied. )

e. Turn COARSE ZERO control (on front panel) clockwise to a convenient power, e.g., 9 on the zero to

10 scale or 2 on the 0 to 3 scale.

f. Differentially measure and record V difference voltage between V power applied.

g. Measure and record V

COMP jack is isolated from chassis ground; measure

from the center conductor of the BNC to the outer conductor.

COMP and VRF output jacks

1. V1 is the

COMP and VRF with

COMP. Note that the

5-3

Model 432A

Section V

Maintenance

INSTRUMENT SERIAL NO.

DATE

TABLE 5-4. PERFORMANCE TEST CARD

Data in this test card corresponds to Performance Tests in Paragraphs 5-16 through 5-20.

5-5

Section V Maintenance

Model 432A

TABLE 5-4. PERFORMANCE TEST CARD

Para. Measurement Ref. Test

5-16

e f

METER ACCURACY

0.01 mW applied; measure RECORDER OUT voltage Meter indicates full-scale (0-1 scale)

Unit

mVdc

divisions

Repeat on remaining 432A power ranges:

e f

Power applied: 0.03 mW Meter indication (0-3 scale)

Power applied: 0.1 mW Meter indication (0-1 scale)

Power applied: 0. 3 mW mVdc 938.8 958.8 Meter indication (0-3 scale)

Power applied: 1 mW Meter indication (0-1 scale)

Power applied: 3 mW

Meter indication (0-3 scale)

mVdc divisions -1/2

m.Vdc 990 1010 divisions -1/2

divisions -1/2

mVdc divisions -1/2

mVdc divisions

Min.

990

-1/2

Actual Max.

1010

+ 1,/2

938.8 958.8 + 1,/2

+1/2

990

1010

+ 1/2

938.8 958.8

-1/2

+1/2

e f

5-17

Power applied: 10 mW

Meter indication (0-1 scale)

CALIBRATION FACTOR

Calibration Factor (%)

88 89 90 91 967 92 957 93 94 95

96 97 98 99 100

DVM Reading (mVdc )

1000

989 9’78

946 935 926

916 907 897 889 880

mVdc divisions

mVdc mVdc mVdc mVdc mVdc mVdc mVdc mVdc

mVdc mVdc mVdc mVdc mVdc

990

-1/2

990

1010

+ 1,/2

1010 979 999 968 957 947 936 925 916

906

988 977 967 956 945 936

926

897 917

887 879

907

899

870 890

5-6

Model 432A

Section V

Maintenance

TABLE 5-4. PERFORMANCE TEST CARD

Para. Ref.

5-18

c e

5-19

Test

Unit

METER LINEARITY

1 mW applied, 3 mW scale: meter indicates 1 mW divisions 2 mW applied, 3 mW scale: meter indicates 2 mW divisions 3 mW applied, 3 mW scale: meter indicates 3 mW divisions

ZERO CARRY-OVER

Zero carry-over:

Measurement

Range (mW)

.01 .03 0 ±5 mVdc .1

.3 1 3

Scope Indication

0 ±5 mVdc

0 ±5 mVdc 0 ±5 mVdc 0 ±5 mVdc 0 ±5 mVdc 0 ±5 mVdc mVdc

mVdc

mVdc -5

mVdc -5 mVdc -5 mVdc -5 mVdc

Min.

-1/2

-5

Actual Max.

+1/2 +1/2 +1/2

+5 +5 +5 +5 +5

5-20

FINE ZERO RANGE

Meter indication on 1-3 scale: Meter indication on 1-3 scale: 1.5+ 1/2 reading

of step f.

divisions divisions

1.75

2.0

1.5

5-7

Model 432A

h. Calculate the power using the following formula?

where R is the resistance of the thermistor mount and should be identical to the setting of the MOUNT RESISTANCE switch.

i. If calculated power is different from the value that was set with the COARSE ZERO control, adjust A2R6 so that the meter reads calculated power. If the range of A2R6 is insufficient to set new power, it will be necessary to change the value of A2R70.

j. Set COARSE ZERO so that meter reads one on

the 0 to 1’scale. Set A2R72 for 1.000 V±10 mV at the

RECORDER output jack on the rear panel. 5-25. There is a simpler form of the equation that

was used to calculate power in step h above. This form ignores V tween the two bridges with no power applied. How-

, the small voltage difference be-

ever, V. becomes negligible on the higher ranges, that is, 1 mV and above, and can be ignored with little decrease in accuracy. I’he simpler form is as follows:

5-26. CALIBRATION PROCEDURE 2.

a. Connect thermistor mount to power meter; let

instrument warm up for at least 10 minutes.

b. Select 1, 3, or 10 mW range.

c. Turn the COARSE ZERO control clockwise to

indicate some convenient on- scale reading.

d. Measure V

COMP and record. Note that VCOMP

jack is isolated from chassis ground; measure from the center conductor of the BNC to the outer conductor.

e. Measure V

RF and record. Follow measurement

procedure in step d.

f. Measure and record V

COMP - VRF. This term

must be measured differentially, that is, one side of

the DVM connected to V

nected to V

RF. In this way the full resolution of the

COMP and the other side con-

DVM can be used.

g. Substituting the measured values into the above

formula, calculate the power,

h. If calculated power is different from the power set with the COARSE ZERO control, adjust A2R6 so that meter indicates that power. If the range of A2R6 is not great enough to set new power level, the value of A2R70 will have to be changed.

i. Adjust COARSE ZERO so that meter reads 1 on the O to 1 scale. Set A2R72 for 1.000 V ±10 mV at the RECORDER output jack on the rear panel.

*This formula is accurate for on- scale readings; how-

ever, with no power applied (i. e., V solveto P = O because of a deleted term + V

1 = V0) it does not

0. This

term can be neglected for any on-scale reading.

5-8

Section V

Maintenance

COVER REMOVAL AND

5-27.

REPLACEMENT.

The side covers can be removed and replaced

5-28.

independently of the top and bottom covers. Each side cover is held in place by four screws retained by nuts

which are fastened to the side frames.

5-29. TOP COVER REMOVAL.

a. At the rear of the instrument, remove the screw

that retains the cover.

b. Grasp the cover from the rear, and slide it back

1/2 inch. Then tilt forward edge of the cover upward

and lift the cover from the instrument.

5-30. TOP COVER REPLACEMENT.

a. Rest the cover flat on the cast guides projecting

inward near the top of each side frame.

b. Slide t h e cover forward, allowing its forward

edge to enter the groove in the front panel.

c. Replace the cover retaining screw.

5-31. BOTTOM COVER REMOVAL.

a. Remove the retaining screw at the rear of the

cover.

b. Swing the tilt stand out to free the cover

c. Slide the cover rearward far enough to free the

forward edge.

d. Tilt the forward edge of the cover upward and

lift the cover from the instrument.

5-32. BOTTOM COVER REPLACEMENT.

a. Set the tilt stand out of the way of the cover b. Rest the bottom cover flat on the cast guides

projecting inward near the bottom of each side frame.

c. Slide the cover forward on the guides so that the formed portion at the rear of the cover slides over the two short projections at the rear corner of each side frame.

d. Replace the retaining screw.

5-33. ADJUSTMENT PROCEDURES.

5-34. INITIAL SETUP.

a. Remove the power meter side panels.

b. Connect the equipment as shown in Figure 5-1.

Refer to Table 5-1 for equipment specifications. 5-35. MECHANICAL METER ADJUSTMENT.

a. Whenthe meter is properly zero-set, the pointer rests over the zero mark on the meter scale when the instrument is:

(1) at normal operating temperature (2) in its normal operating position (3) turned off

Section V Maintenance

Model 432A

b. Set the pointer as follows to obtain best accuracy

and mechanical stability:

(1) Turn instrument off. (2) Rotate the meter mechanical adjustment screw

clockwise until the meter pointer is to the left of zero and moving up the scale toward zero. Stop when the pointer is exactly over the zero

mark. If the pointer overshoots, repeat step 2.

(3) When the pointer is exactly on zero, rotate the

adjustment screw approximately 3 d e g r e es

counterclockwise. This frees the adjustment

screw from the meter suspension. If the pointer

moves during this step, repeat steps 2 and 3.

5-36. BRIDGE AMPLIFIER TESTS

a. Connect equipment as shown in Figure 5-3. b. Compensation Bridge.

1. Connect 3440A/3443A between A1TP5 and A1TP6 (using 10K isolation resistors).

2. Make the following settings:

RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . .l0mW

MOUNT RESISTANCE . . . . . . . . . . . . . .

FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . .. SET

3. Adjust A1R12 (OFFSET ADJUST) for 0.0 ±0.1 mV dc reading on the digital voltmeter.

4. Change 8477A FUNCTION to CHECK. The digital VM reading should not exceed ±0.4 mVdc.

c . RF BRIDGE

1. Connect DVM between A1TP3 and AlTP4 using 10 the leads.

3. Set 8477A FUNCTION to SET. Adjust A1R15 (OFFSET ADJUST) for DVM reading of 0.0

± 0.1 mVdc.

432A

..200Ω

8477A

κΩ isolation resistors in series with

4. Change 8477A FUNCTION to CHECK. The reading should not exceed ±0.4 mVdc.

Note: Failure of the instrument to meet the specification of steps (4) of b and c above indicates insufficient bridge gain. Refer to Table 7-3 or 7-4 in the trouble-

shooting section.

5-37. METER AND RECORDER OUTPUT

CALIBRATION a. Connect the DVM to the 432A RECORDER output. b. Set 8477A controls as follows:

FUNCTION . . . . . . . . . . . . . . . . . . . .

ZERO/TEST . . . . . . . . . . . . . . . . .. ZERO

POWER . . . . . . . . . . . . . . . . . . . . . . . 1mw

c. Set 432A controls as follows:

MOUNT RES . . . . . . . . . . . . . . . . . . .

RANGE . . . . . . . . . . . . . . . . . . . . . . . . . lmW

CAL FACTOR . . . . . . . . . . . . . . . . . . .

d. Adjust ZERO control on 8477A for DVM indica-

tion of 0.000 ±.00IV.

e. ZERO/TEST on 8477A to TEST f. Adjust A2R6 in 432A for 432A meter reading of

1.0 mW ±.01 mW. g. Adjust A2R74 in 432A for DVM reading of 1.0V

±.001V

Change the following settings: 432A RANGE to 10 mW

8477A POWER (mW) to 10 mW and ZERO/

TEST to ZERO.

Note: When switching 432A to 10 mW or switching from 10 mW to any other range, the meter will react slowly for a short period. This is due to time constants in the instrument and is normal.

Zero instrument as in step d and c.

200Ω

.200Ω

100%

Figure 5-3. Bridge Amplifier Test

Adjust A2R86 for DVM reading of 1.00 ±.00 IV.

Return 432A RANGE and 8477A POWER switches

to 1 mW and zero as before.

1. Adjust A2R6 for DVM reading of 1.000 ±.00 1V. m. Perform the adjustments of steps h through 1

again until 432A reads 1 ±.010V (at recorder output)

on both 1 mW and 10 mW ranges.

n. Turn to the beginning of this section; verify that

the instrument meets its specifications by completing the PERFORMANCE TESTS.

5-38. BATTERY CHARGER ADJUSTMENT

(OPTION 01 ONLY)

a.b.Remove the power meter top panel.

Connect 432A to ac line power and turn ON.

5-9

Model 432A

c. Set A7R8 fully clockwise for maximum battery

charge rate.

d. With the digital voltmeter, measure the voltage

between A7TP1 and A7TP2.

e. Adjust A7R8 for digital voltmeter reading of 0.2

to 0.4 volts (20 to 40 mA through R3).

Section V

Maintenance

5-43. To check a transistor, first see if the emitterbase diode is forward-biased by measuring the voltage difference between emitter and base. When using an electronic voltmeter, do not measure directly between emitter and base; there may be sufficient loop current between the voltmeter lead to damage the transistor. Instead, measure each voltage separately with respect to a voltage common point (e.g. , chassis).

f. Disconnect the test equipment and power and re-

place the power meter top and side panels.

5-39. BATTERY REMOVAL

a. Remove the top cover. b. Remove the two Phillips screws on the top rear

of the battery cover.

c. Lift off the battery cover. d. Loosen the nuts on the battery binding posts. e. Lift out the battery.

5-40.

ISOLATING TROUBLE IN TRANSISTOR

CIRCUITS.

5-41. General. The following information should help

determine if a transistor works. There are tests for

both in-circuit and out -of -circuit transistors, which help to determine if a particular trouble is due to a faulty transistor or some other component. See Figure 5-2.

5-42. hi-circuit Testing. Intransistor Circuit testing the most important consideration is the transistor

base-emitter junction. Like the control g r id of a vacuum tube, this is the control point in the transistor.

5-44. If the transistor base-emitter junction is

forward-biased, the transistor conducts. If the diode

is heavily forward-biased, the transistor saturates.

However, if the base -emitter diode is reverse-biased, the transistor is cut off (open). The voltage drop across a forward-biased emitter-base junction varies with transistor collector current. A germanium transistor has a typical base -emitter voltage of 0.2-0.3 volt with

1-10 mA collector current, and 0.4-0.5 volt with 10100 mA collector current. In contrast, base-emitter

voltage for silicon transistors is about twice that for

germanium types; about 0.5-0.6 volt for low collector

current, and about 0.8-0.9 for high collector current.

5-45. If the emitter base-junction is forward-biased, check for amplifier action by short-circuiting base to emitter while observing collector voltage. The transistor should stop conduction (cut off), which should

shift the collector voltage close to the supply voltage. Any difference is due to current leadage through the transistor.

In general, the smaller the current, the better the transistor. If collector voltage does not change, the transistor has either an emitter-collector

short circuit or emitter-base open circuit.

5-46. OUT-OF-CIRCUIT TESTING,

5-47. The two common causes of transistor failure are internal short - and open-circuits. Remove the transistor from the circuit and use an ohmmeter to

measure internal resistance. See Table 5-5 for meas-

urement data.

Table 5-5. Out-of-Circuit Transistor Resistance Measurements

Transistor Type

Positive Lead to

I I

Small Signal

emitter emitter

PNP Germanium

Power

emitter base* emitter

Small Signal

base collector

NPN Silicon

Power

base

collector emitter

To test for transistor action, add collector -base short.

5-10

Connect Ohmmeter

Negative Lead to Measure Resistance (ohms)

base *

collector

collector several hundred

emitter emitter very high (might read open)

emitter

Measured resistance should decrease.

200-500

10K - l00K

30-50

lK - 3K

200 -1000

high, often greater than lM

Section V Maintenance

Model 432A

Figure 5-4. Transistor Biasing and Operating Characteristics

5-11

Model 432A

Section V

Maintenance

Table 5-6. Etched Circuit Soldering Equipment

Table 5-7

5-12

Section V

Maintenance

Model 432A

5-48. COMPONENT REPLACEMENT IN

ETCHED CIRCUITS.

5-49. General. Etched circuit boards are sensitive to heat and to scratches with sharp objects. This is because the conductors are plated o n t o the circuit boards and the plating extends through the component mounting holes. Whenever possible, avoid unnecessary component substitution; it can damage the circuit board and adjacent components. See Table 5-6 for recommended tools and materials.

5-50. AXIAL-LEAD COMPONENTS . 5-51. Resistors, tubular capacitors and other axial-

lead components can be replaced without unsoldering, Cut the component leads near the body of the defective component, remove the component and straighten the leads left in the board. Wrap leads of the replacement component one turn around the original leads, solder the connection, and clip off the excess lead.

5-52. OTHER COMPONENTS.

5-53. Replace other components as follows:

a. Remove defective component from circuit board. Use a low-power soldering iron because excessive heat may lift a conductor or damage the board.

b. Remove solder from mounting holes with a suc-

tion device or a wooden toothpick. DO NOT USE A

SHARP METAL OBJECT SUCH AS AN AWL OR TWIST DRILL. SHARP OBJECTS MAY DAMAGE THE PLATED-THROUGH CONDUCTOR.

c. Shape the leads of the replacement component to

mat ch the mounting-hole spacing.

d. Insert the component leads in the mounting holes

and position it as the original was. DO NOT FORCE

LEADS OF REPLACEMENT COMPONENT INTO MOUNTING HOLES. A sharp edge on the lead may damage the plated -through conductor.

e. Solder the component in place and remove excess

flux from the soldered a r e as. Apply a protective

coating to prevent contamination and corrosion. See Table 5-6 for recommendations.

CAUTION

Most ohmmeters can supply enough current

or voltage to damage a transistor. Before using an ohmmeter to measure transistor forward or reverse resistance, c h e c k its

open -circuit voltage and short -circuit cur -

rent output ON THE RANGE TO BE USED.

Open-circuit voltage must not exceed 1.5volts

and short-circuit current must be less than

3 mA.

5-13

SECTION VI

REPLACEABLE PARTS

6-1. INTRODUCTION.

6-2. This section contains information for ordering

replacement parts. Table 6-1 lists parts in alpha-

numerical order of their reference designators and

indicates the description and HP stock number of each part, together with any applicable notes. Miscellaneous parts are listed at the end of Table 6-1, Table 6-2 lists parts in alpha-numerical order of their HP stock number and provides the following information on each part:

a. Description. b. Manufacturer of the part in a five-digit code;

see list of manufacturers in Table 6-3.

c. Manufacturer’s part number.

d. Total quantity used (TQ column).

REFERSNCE DESIGNATORS

c= CP CR : DL

.4=

AFC =

AMPL

BFO

BE W BH

BRS

BWO

Ccw

CER

CMO

COEF

COM

cCmfP

COMPL CONN

CRT

DEPC

ELEcT EN CAP EXT

FH = FIL H m=

01194-13

assembly

motor

battery

capacitor

coupler diode delay line

dmrice sisnaling (lamp)

mist electronic part

amperes

automatic frequency cent rol

amplifier

beat frequency oscillator

berylltum copper

btnder head

bamfpaBs brass backward wave oscillator

counter-clockwise

Ceratic

cabinet mount 0.19

coefficient

common

compaeition

complete

connector

cadmium plate

cathode -ray tube

c10ckwi6e

deposit ed cartwn

drive

electrolytic

encapsulated

external

farads

flat head

fintst er head

ftxed

gisa (109)

r e rmanium

ikss

gronndf ed)

FL Ic J K L Ls M fdK

H HDw HEX HG HR Hz

IF IMPG fNCD lNC L ms INT

Lff LIN LK WASH LOG LPF

M MEG MET FLM MET OX MFR MHZ

fdfNAT

MOM MTG hfY

N N/C NE Nf PL

fuse

filter

integrated ckrcult jack relay RT inductor loud spe&ker meter TB

microphone

ABBRZVL4TIONS

henries hardware hexagonaf mercury hour(s) hertz

intermediate freq Wnpregmated

tncandeecent include(s) insulation fnternal

kno

1000

left hand linear taper

lock washer logarithmic taper low pass filter

miUi

10-3

meg

= 106

metal film metallic oxide manufacturer mega hertz

mintature momentazy mounting

,.my~r. t

nano (10-9) normally closed neon nickel plate

6-3.

6-4.

Appendix D

table D-1

To obtain apart that is not listed, include:

6-5.

Instrument model number.

Instrument serial number.

Description of the part.

Function and location of the part.

: R

s T

N/O

NPN

NRFR

NSR

OBD on ox

P Pc PF

PH BRZ PHL PIV PNP

P/o mLY mRc ms mT PP PT Pwv

RECT RF m

mechanical part plug transistor

resistor thermistor switch transfmmer terminal board test point

normafly open negative positive zero (zero temperature

coefficient) negative -PO sitive negative

not recommended for field replacement not separately replaceable

order by description oval bead oxide

peak

f~f::a:~=”;ofarade

phosphor bronze

Phillips peak inverse voltage positive-negative positive part of polystyrene prcelain position(s) potentiometer peak-to-peak point peak working voltage

rectifier

radio frequency

round head or

right hand

w x Y

RMO Riws RWV

S-B SCR SE SECT SEMICON Sf= SfL SL SPG SPL SST SR sTL

TA TD TGL THD TI TOL TRfM TWT

u VAR

VDCW

WI w Wfv

w w/o

vacuum, tube, neon

bulb, photocell, etc.

voltage regulator

cable socket Crystal

tuned cavity,

net work

rack mount only root- mean square reverse working voltage

slow-blow screw selenium aection( semicontictor

silicon

silver

slide spring special

stainless steel

split ring

steel tantalum

time delay toggle thread titanium tolerance trimmer traveling wave tube

micro

variable dc working volts

with watta working inverse voltage wirewmmd

without

.9)

IO-6

6-1

Section VI Parts

Reference

Designation

@ Part

Table 6-1. Reference Designation Index

No.

Description

Model 432A

Note

AIC1

A1C2 A1C3 A1C4

ALC5

A1C6

AIC7 A1C8 A1C9 A1C1O

AIC1l

A1C12 A1C13 A1C14

ALCR1

A1CR2

AIQ1

A1Q2 A1Q3 AlQ4 A1Q5 AlQ6

klQ7

A1Q8 A1Q9

A1Q1O AIQ1l

A1Q12

A1Q13 A1Q14

hlQ15

tilRl

hlR2 A1R3 41R4 ?41R5 klR6

00432-6001

00432–2001

0180-0374

0160-2930 0160–2930 0160-0380 0160-2930 0160-2930

0160–2930 0160–0380 0160-2930 0160-2930

0160–29>0

0180-0374 0160-2264 0160–2264

1901–0040

1901-0040

1S53-0020

1853–0020

1854–0071 1854-0071 1853-0001

1854-0221

1854-0071

1854-0071 1853-0001

1854-0221

1854-0071 1853-0020

1853-OOZLI

0698-3260

0686–1055 0698–3160

0698-3160 0698-31b0

13LIAR0

SY:BRIOGE

tMJARO: BLANK

C:FXD ELECT

C:FXO

CER

C:FXD

CER

C:FXO MY 0.22 C:FXO

CER

C:FXO

CER

(,:FXD

CER

C:FXO MY 0.22 C:FXO

CER

(,:FXD

CER

C,:FXD

CER

C:FXD ELECT 10 C:FXD

CER 20 PF 5% 500VOCW

L:FXO

CER 20 PF 5%

DIDDE:SILICON

I)1OOE:SILICON

TRANSISTOR:SILICON

TRANSISTOR: SILICON TRANSISTOR:SILICON TRANSISTOR:SILICON TRANSISTOR:SILICON TRANSISTOR:PNP

TRANSISTOR OUAL:SILICON FAcToRY SELECTED TRANSISTOR: SILICON TRANSISTOR:SILICON TRANSISTOR:SILICON

TRANSISTOR:PNP SILICON 30V 900MW TRANSISTOR OUAL:SILICON

FACTORY TKANSISTOR:SILICON TRANSISTOR: SILICON

TRANSISTOR:SILICON

R:FXO

MET FLM

R:FXO

COMP 1 MEGOHM 5%

R:FXD

MET FLM

NOT

ASSIGNEO

R:FXO

MET FLM

R:FXO

MET FLM

10 UF

0.01

0.01 UF +S0–20% 100VDCW

0.01

SELECTEO

10%, 20VOCH

+80-20% loovoGH

+80-20% 100VDCH

UF 10%

UF UF

UF 10%

UF UF UF

UF 10% 20VOCW

30MA 30WV

30MA

464K

3L.6K

31.6K

200VDCW

+80-20% loovDcH

+80-20% 100VOCW

200VDCW

+80-20% 100VOCW

+80-20% 100VOCW +80–20% 100VOCW

500VOCW

30WV

PNP

NPN

SILICON 30V 900MW

PART

NPN

PNP

OHM 1%

l/2W

OHM 1%

OHM 1% OHM 1%

l/8W

l/8W l/8W

6-2

# See introduction to this section for ordering information

Model 432A

Reference

13ximmtinn

--- .---.-.-

A1R7 itlRO A1R9 AIRIO AIR1l

A1R12 A1R13 A1R14 AIR15 A1R16

A1R17 A1R18 A1R19 A1R20 A1R21

&lR22 &LR23 blR24 hAR25 klR26

&lRZ7

tIlR213

klR29 A1R30 A1R31 &lR32

kLR33 iilR34 fIlR35 filR36 klR37

klR38 4LR39 41R40

klR41

klR42 klR43 41 illAl

@ Part

0698-3156 0757-0465 0698-3136 0698-3441 0757-0416

2100-1770 0757-046L 0811-2284 2100-1770 0811–2284

0757–0199 0698-3441

0698-3160

0698–3156 0757–0465 0757-0416

0757-0461 0811-2284

0757-C199

0811-2284 0757-0199 0698-3260

0757-0465 0757–0465 0757-0442 0757-0279 0757-0279

0757-0279 0757-0279 0698-3160

0698-3160

0757-0442

0360-0124

00432-6011

Table 6-1. Reference Designation Index (Cont‘d)

No.

R:FXD

MET FLM 14.7K OHM 1% l/8W

R:FXO

MET FLM

R:FXO

MET FLM 17.8K OHM 1X l/8W

R:FXO

MET FLM 215 OHM

R:FXO

MET FLM

R:VAR WW 100

R:FXO

MET FLM 68.lK OHM R:FXD WW lK R:VAR WW R:FXD WH lK

R:FXO

MET FLM 21.5K OHM 1% l/8W NOT

ASSIGNEO

R:FXO

MET FLM 215 OHM 1% l/8W R:FXO

MET FLM 31.6K OHM 1% l/8W R:FXD

MET FLM 31.6K OHM 1X l/8M R:FXD

MET FLM 14.7K OHM 1% l/8W R:FXD

MET FLM LOOK OHM 1% l/8W K:FXO

MET FLM NOT

ASSIGNED

R:FXD

MET FLM 68.IK OHM 1% l/81i R:FXO WW lK

K:FXO

MET FLM 21.5K OHM 1% l/8W R:FXD WW lK R:FXD

MET FLM 21.5K OHM 1% l/8W R:FXO

MET FLM

NOT

ASSIGNEO

R:FXD

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM 10.OK OHM 1% l/8H

R:FXO

MET

R:FXO

MET FLM 3.16K OHM 1% l/8kJ

k:FXD MET FLM 3.16K OHM 1% l/8H

R:FXO

MET FLM 3.16K OHM 1% l/8W

R:FXO

MET

R:FXO

MET FLPl 31.6K OHM 1X l/8W

N(IT ASSIGNED R:FXO

MET FLM TERMINAL:SOLDER ASSY:AUTO

100K

511

OHM 10% LIN l/2W

OHM 0.1% l/40W

100 OHM 10% LIN l/2kl

OHM 0.1% l/40W

511

OHM 0.1% l/40W

464K

100K 100K

FLil

FLfl

LO.DK

ZERO

Description

OHM 1X l/SH

OHM 1% l/8W

OHM

3.16K OHM 1% l/8W

3L.6K OHM 1% l/SW

LUG

l/8W

OHM

l/8W

OHM 1% l/8W

OHM 1% l/8H

OHM 1% l/8W

l/8H

Section VI

Parts

Note

# See introduction to this section for ordering information

6-3

Section VI Parts

Reference

Designation

@ Part No.

Table 6-1. Reference Designation Index (Cont’d)

Description #

Model 432A

Note

/42

A2C1

A2C2 A2C3 A2C4 A2C5 A2C6A2C20

A2C21 A2C22 A2C23 A2C24 A2C25

A2C26 A2C A2C28 A2C29 A2C3C

A2C3 1 A2C32 A2C33 A2C34 A2C35

A2C36 A2C37 A2C38 A2C39 A2C40

A2C41 A2C42 A2C43 A2C44

A2C45

A2C46 A2C47 A2C48

A2C49

A2C50

A2CR 1

A2CR2 A2CR 3 A2CR4

A2CR5

00432–6015

00432 -2u15

01 S0-1819

0180-0229 0160-2917

0160–2917

0140–0234

0140–0234 0180-1746

0160–0978

0160-2930

0180–2178 0160-2930

01s0-1940

0180-0197 0160–2672

0180-0197

0160-2917

0160-2917 0160-2150

0180-0229

0160-2917 0180–0106 01s0-0197 0180-0291

0180-0106

0150-0059 0160-2930 0140–0192 0180–0229 0160-2917

1901-0026

1901-0026 1901–0026 1901–0026

BOARO AS

BOAR D:

L:FXD ELECT 100

C:FXD ELECT 33 C:FXD NUT C:FXD CER. 0.05 NOT NOT

L:FXO MICA 500

C:FXD MICA 500 L:FXO ELECT 15 NiJT ASSIGNED (,:FXD MICA 150J

C:FXD NOT l\OT ASSIGNEO C:FXO ELECT 220 L:FXD

L:FXD ELECT 33 NOT (,:FXO ELECT 2.2 L:FXO MY 0.047 C:FXO ELECT 2.2

C:FXD NUT C:FXD L.:FXO MICA 33 C:FXD ELECT 33

C:FXD C:FXD ELECT 60 C:FXD ELECT 2.2

C:FXD ELECT 1.0 UF 10% 35VDCW C:FXD ELECT 60

C.:FXD C:FXD

C:FXD MICA 68

L:FXD ELECT 33

C:FXD

LIIOOE:SILICON

D1ODE:S1LICON

DIDDE:SILICON

OIOOE:SILICON

NOT ASSIGNED

SY: LOGIC

BLANK

CER

ASSIGNEO

ASSIGNED ASSIGNEO

CER

ASSIGNED

CER

ASSIGNED

CER

ASSIGNED

CER

CER CER

CER

UF 10% 10VDCW

0.05

+80-20% 100VDCW

PF 1% PF

UF 10%

PF 1%

0.01

+80-20% 100VDCW

0.01

+80-20% 100VDCW

UF 10% 15VOCW

UF 10%

5.%’ 80VOCH

UF 10% 20VDCW

0.05 UF +80–20% 100VDCW

0.05

+80-20% 100VDCW

PF 5%

10Z

0.05

+80-20% 100VOCW

20%

UF 10% 20VOCW

20%

3.3-0.25

0.01

0.05

+80-20% 100VDCW

PF 5%

UF 10% 10VDCW

+80-20% 100VDCW

0.75A 200 PIV

+75-10%

20VDCW

500VDCW

20%

8VOCW

10VDCW

6VDCW

500VDCW

50VOCW

20VDCW

6-4

# See introduction to this section for ordering information

Model 432A

Reference

Designation

@ Part No.

Table 6-1. Reference Designation Index (Cont’d)

Description #

Section VI

Parts

Note

A2CR6 A2CR7 A2CRI? A2CR9

A2LR1O

A2CUll A2c R12 A2CR13 A2CR14 A2cR15

A2C.

R16 A2CR17 A2CR18 A2CR19 A2CR 20

A2CR21 A2CR22 A2CR23

A2Q1

A2Q2 A2Q

A2 C14 AZQ5 A2Q6

A2Q7 A2Q8 A2Q9 A2Q1O A2C?11 A2Q12AZ f.i19

A2Q2C A2Q2 1 A2Q22 A2Q22 A2Q24 A2Q25

A2Q26 A2Q27 A2Q28 A2Q29 A2Q3 O A2Q31

F12Q32 AZQ33 !%2Q34 h2C35 &2Q36

1902-0033 1901–004U 1901–0026

1901–0040 1901-0040

1901-0040

190 I–004L)

1901-0040

1901–0040 1901–0040 L901–004U 1901-0040 1901-0040

1901-0040 1901–0040 1901-0040

lS54–007i

1854–0062 1854-0071 1853-0012 1853–OOfO 1S53–0020

1853–0020 1854-0071 1854–0003 1853-0001 1854-0071

1853-0020 1854-0005 1854–0071 1854-0071 1854-0005

1854–007A 1854–0071 1854-CD09 1854–0009

1855-0062

1S55-0062

1854–0071 1854-0071 1853-0015

DIODE SREAKDOWN:6.2V tiIcIi7E:sILxc0N DIOOE:SILICON

NOT

ASSIGNED

NGT

ASSIGNEO

DXODE:SILICON OIGDE:SILICON L)IOOE:SILICON DIODE:SILICON DIODE:SILICON

I)1OOE:SILICON OIODE:SILICON DIODE:SILICON i2100E:SILICON DIODE:SILICON

D1ODE:SILICDN DIOOE:SILICON OIOOE:SILICON

TRANSISTOR: SILICON

TRANSISTOR:SILICON TKANSISTOR:SILICON TRANSISTOR:PNP TRANS1ST13R: S1LICON TRANSISTOR:SILICON

TRANSISTOR: SI’LICON

TRANSISTOR: SILICON TKANSISTOR:NPN TRANSISTOR:PNP TRANSISTOR: SILICON

NOT

ASSIGNEO

NUT

ASSIGNED

TRANSISTCIR:SILICON TRANSISTOR:SILICON TKANSISTOR:SILICON TRANSISTDR:SILICON TRANSISTLJR:SILICON

NOT

ASSIGNED

TRANSISTO17:SILICON

TRANSISTLIR:SILICON

TRANSISTOR:SILICDN

TKANSISTOR:SILICON

TRANSIS,TOR: FIELD EFFECT 30V

NOT

ASSIGNED

TRANSISTOR:FIELD

NOT

ASSIGNED

TRANSISTOR: SILICON

TRANSISTOR:SILICON TRANSISTOR: SILICON

30MA

30WV

0.75A 200 PIV

30MA

30WV

30MA

30WV

30MA

30WV

30MA

30WV

30MA

30WV

30MA

30WV

30MA

30WV

30MA 30WV

30MA

30WV

30MA 30WV

30MA

30WV

30MA

30WV

30MA

30WV

NPN

2N1701

NPN

SILICON 2N2904A

PNP

NPN

SILICON SILICON 30V 900MW

NPN

PNP NPN

2N708

NPN

NPN NPN

2N708

NPN NPN NPN

2N709

NPN

2N709

EFFECT 30V

NPN

PNP

2N3640

# See introduction to this section for ordering information

6-5

Section

Parts

Reference

Designation

@ Part No.

Table 6-1. Reference Designation Index (Cont’d)

Description #

Model 432A

Note

A2Q37 A2Q38 A2Q39 A2Q40 A2Q4 1

A2Q42 A2f.)43 A2Q44

A2Rl

A2R.? A2R3 A2R4 A2R5 A2R6

A2R7 A2R8 A2R9 A2R1O

A2R11 A2R12

A2R1? A2R14 A2R15

A2R16 A2R17 A2R18 A2R A2R20

A2R21 A2R22 A2R23

A2R24

A2R25

A2R26 42R27

i2R28

42R29

ti2R30

\2R31

\2R32

i2R33

i2R34

42R35

\2R36–

42R37

$2R38

i2R39 42R40 42R41

1853-0020 1855-0062 1854–0071 1854-0071 1853-00.0

1853-0020

1854-0071 1854-0071

07’57-0279

0683-0685

0757-C835

0698-3156 2100-1773

0757-0289 0757–0260 0698-3160

0698-3441

0757–0465 0757–0442 0698-3136

0757–0442

0757–0279 0757–0198

0698-340L

0698–3156 0757–0442 0757-0442

0698-3260

0757-044A 0757–0442 0698-3156 0757-0397

0757-o199 0757-0442

075_/-04b5

0698-3454

0757-0465

069S-3155

0698-3155 0757-0465

TRANSISTOR: SILICON

TRANSIST(IR:FIELO

Transistor:

TKANSISTOR:SILICON

TRANSISTLIR:SILICON

TRANSISTOR:SILICON Transistor: TRANSISTUR:SILICON

R:FXO

R:FXO R:FXD NuT ASSIGNEO R:FXO R:VAR WW lK OHM

R:FXO R:FXO R:FXO R:FXO FACTORY SELECTEO PART

K:FXO k:FXO R:FXO NLJT ASSIGNEO R:FXII

R:FXO R:FXO K:FXO NUT

ASSIGNEO

NOT

ASSIGNEO

R:FXD R:FXD R:FXO R:FXO R:FXO

R:FXO R:FXO R:FXO R:FXO NOT

ASSIGNED

N(IT ASSIGNEO

R:FXO

R:FXO R:FXO R:FXO NOT

ASSIGNEO

NOT

ASSIGNEO

R:FXO R:FXO R:FXO R:FXO

SILICON

MET FLM

COMP

6.8 OHM

MET FLM

MET

FLM 14.7K OHM 1% l/8W

MET

FLM 13.3K

MET FLM lK MET FLM MET FLM

MET FLM MET FLM MET FLM

MET

FLM 10.OK

MET FLM MET FLM MET FLM

MET

FLM 14.7K

MET FLM

MET FLM MET FLM

MET

FLM 19.OK

MET FLM MET

FLM 14.7K

MET FLM

MET FLM MET FLM MET

FLM 100K

MET

FLM 215K

MET FLM MET

FLM 4.64K OHM 1% l/8W

MET FLM MET

FLM 100K

PNP

EFFECT 30V

NPN NPN PNP

PNP

NPN NPN

3.16K OHM 1% l/8W

6.81K OHM 1%’ l/2W

10%

31.6K OHM 1% l/8W

215 OHM 1% l/8W

100K

10.OK

17.8K

3.16K OHM 1% l/8W 100 OHM 1% l/2W

215

10.OK OHM 1% l/8W

10.OK

464K OHM 1% l/8W 464K

10.OK

68.1 OHM 1% l/8W

21.5K

10.OK

100K

4.64K

l/4W

LIN l/2W

OHM 1%

OHM 1% l/8W

OHM 1%

OHM 1!4

OHM 1%

OHM

1’% l/8W

OHM 1% OHM 1%

OHM 1%

OHM 1% OHM 1% OHM 1%

OHM 1%

l/2W

l/8W

l/8W l/8W

l/8W

l/8N l/8W

l/8w

l/8W

l/8W l/8W

l/8W

6-6

# See introduction to this section for ordering information

Model 432A

Reference

Desigrmtlon

@ Part No.

Table 6-1. Reference Designation Index (Cont'd)

Description #

Section VI

Part s

Note

— ,

A2R42 A2R43 A2R44– &2Fi45 &2R46

AZR47 k2P+4aA2R4% I$2R50 A2R!31

h2R52 A2R53 k2R54

k2R55

k2R56

42R57 &2R58 k2R59 k2R6Q k2R61 k2K6Z ti2R63

+ZR64 k2R65 $ZR66 $2R67 $2R68

i2R69 $2R70 \2R71 &2R72 i2R73

G2R74 i2R75 \2R76 i2R77 h2R?8

k2R79 L2R80 L2R81– L2R82 ,2RS3 i2R84(2R86

L2R8

0683-1065 075-I -l L194

0757 -04b5

0683-1065

0757–0280

Ob98-32b0

0757–0279

069S–31b0

0698-3426

0698-316Q

0757–(3442

Ob98-326C)

0698-3260 0698-0084 06$33-1055

0757–0639

0757-0442 Ci757-0461 Ob98–31b0 0157-0442

069S-3438

0698-31b0 0698-3444 0757-0199

2100-1769 0698–4466

0757–0346 0698-3160 0811–22?7

0811–2277 0811–2537

0698-3441

0683-1065

0360-0124

0370-0077

R:FXD

COMP 10M

R:FXD

MET FLM

NOT

ASSIGNEO

NOT

ASSIGNED

F.:FXO

MET FLM

J?:FXO COMP MIT ASSIGNEO NOT

ASSIGNEO

R:FXD

MET FLM lK

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

FACTORY SELECTEO R:FXO

MET FLM

FACTURY SELECTEO

NuT ASSIGNEO

R:FXD

MET FLM

R:FXD

MET

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

COMP 1 MEGOHM 5%

NOT

ASSIGNEO

NOT

ASSIGNEO

R:FXL)

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

K:FXD

MET FLM

R:FxO

t4ET FLM

R:FXD

MET FLM

NUT ASSIGNED R:FXCl

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

li:VAR WW 50 OHM

R:FXO

MET FLM

R:FXO

MET FLM 10 OHM 1%

R:FXO

MET FLM

R:FXO WW 10K

R:FXD WW 10K R:FXD WW 5K OHM 0.1% l/4W NOT

ASSIGNEO

NUT

ASSIGNEO

k:FXO

MET FLM

NUT ASSIGNEO

NUT

ASSIGNED

A:FXD

COMP

TtRMINAL:SOLOER

KNOB:5/8° SKIRTED

OHM 5X 1/4ki

1.47K

OtiM 1% L18W

100K

OHM 1%

10M OHM

FLH 464K,0HM

OHM

10M

OHM

4b4K

OHM @

3.16K

OHM 1% 1/13W

31.6K

OHM 1%

14.7

OHM 1%

PART

31.6K

OHM 1%

PART

10.OK

OHM 1%

464K

OHM 1%

2.15K

OHM 1%

b.SIK OHM 1% l/8M

10.OK OHM lx l/8H

68.IK

OHM 1%

31.bK

OHM 1%

10.OK

OHM Iz

147

OHM 1%

31.6K

OHM 1%

316

OHM 1%

21.5K

OHM 1%

10%

LIN l/2W

976

OHM 1%

31.6K

OHM 1%

0.1% l/40W

215

OHM

LUG

BAR

l/4W

l/8W

l/4W

l/8w

l/SW

l/8W

l/8H

1% l/8H

l/4w

l/SW

l/8H

L/8M

l/8W l/8W

l/8w

l/8W

L/SW

l/8W

l/8N

l/8H l/8W

l/8W

# See introduction to this section for ordering information

6-7

Section VI Parts

Reference

Designation

A3 A3R1 A3R2

A3R3

A3R4

A3S1

A4R1

A4R 2 A4R 3 A4R4 A4R 5 A4R6

A4R 7 A4R8 A4R 9 A4R

A4R11

A4R 12 A4R13

A4S1

A7C1

A7CR 1

A7CR2

A7Q

A7Q2 A7Q3 A7Q4

A7R

A7R2 A7R3 A7R4 A7R5 A7R6

A7R 7 A7R8

@ Part No.

00432-6003 0811-2536 0811-2284 0811-2534 0811-2535

3100-2470

00432-6004

0757–0346

0757–0346 0757-0346 0757-0346 0757-0346 0757-0346

0757-0346 0757-0346

071i7-034b

0757–C346

0757-0346

0757-0346 0698–6635

3100–2469

0370–0193

00432-6007

00432-2007

0160-2930

1901-0026

1902–0048

1854–0039

1853-0020

1854-0071 1854-0071

0698–3635

0757–0280 0757-0346 0757–0439 0757–0280 0757–o199

0757-0199 2100-1775

Table 6-1. Reference Designation Index (Cont’d)

Description #

SWITCH ASSY: R:FXD WW 3167 OHM 0.1% l/40W

R:FXD WW IK OHM 0.1% l/40w R:FXD WW 314.3 OHM 0.1% l/40W R:FXD WW 145.0 OHM 0.1% l/40W

SWITCH:ROTARY

SWITCH ASSY: CALIBRATION

R:FXD

MET FLM

R:FXO

MET FLM

K:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXII

MET FLM

R:FXD

MET FLM

t7:FXD

MET FLM

SMITCH:RIJTARY

KNOB:BLACK

NOT

ASSIGNED

NUT

ASSIGNED

BuARO

B(JARD:8LANK

C:FXD

DIOOE:SILICON

OIOOE 8REAKDOWN:6.81V

TRANSISTOR: SILICON 2N3053

TRANSISTOR:SILICON

TRANSISTOR:SILICON TRANSISTOR:SILICON

R:FXD

MET OX

R:FXD

MET FLM lK OHM 1%

R:FXD

MET FLM 10

R:FXO

MET FLM

k:FXO

MET FLM lK

R:FXD

MET FLM

R:FXO

MET FLM

R:VAR WW 5K

RANGE

ASSY:BATTERY

CER

0.01

OHM

FACTOR

10 OHM 1% l/8W

OHM 1% l/8W

DHM 1%

10 OHM 1% l/8W 10

OHM 1%

OHM 1% l/8W

10 OHM 1% l/8W 13 OHM 1% l/SW 13 OHM 10 OHM 1% l/8W 10 OHM 1% l/8W

OHM 1%

680

OHM 1%

0.75A 200 PIV

680

OHM 5%

OHM 1% l/8W

6.81K OHM 1’% l/8W OHM 1% l/8W

21.5K OHM 1% l/8H

21.5K

10% LIN l/2W

l/8W

l/SW

17,

l/8ki

l/8W

CHARGER

+00-20% 100VDCW

PNP NPN NPN

l/8W

OHM 1%

l/8W

Model 432A

Note

6-8

BT 1

BT1 BT

1420-0062

00432-0008 00432-0009

0160-3043

BATTERY:RECHARGEABLE

BRACKET:BATTERY UPPER BRACKET:BATTERY

C:FXO

CER 2 X

LOWER

0.005

24V

UF 20%

250VAC

# See introduction to this section for ordering information

Model 432A

Reference

Designation

12sl

J2 J2 .13 J3 J4 J4

R2 R3

R7 R8 R9 RIOR13

R14

S2 53 S3 S3

S3 S4 S4

XA1

XA 2

XDS1

XDS

@ Part No.

2140-0015

2110-0027

1251-1280

1250-0118

1250–olia

1251-0148

1120-1497

2100-2849

2100-2659

0S11-2548 0811-2548

0811-2538 0811–2538 0757–oi98

0757-0198 0757-0195 069B–3160

0811-2277

3101-0957

3101-0033

3101-1180

7204-OOLl+

0590-00+1 3101–1357

9100-2504

00432-0005

8120-1082

8120–0078

1251-0172

5040–02>7

504G-0235

1400-0084

Table 6-1. Reference Designation Index (Cont’d)

Description #

MP:GLOW NEON

FUSE: O. 125A 250V

CONNECTOR:AUOIO

CONNECTOR:BNC V-RF LONNECTOR:BNC V-COMP LilNNECTUR:BNC RECORDER OUT

LONNECTUR:POWER

METER

R:VAR WW 50K

K:VAR WW 50K

K:FxD WW 100 R:FXD WW 100 OHM 0.1% l/10W R:FXO WW 100 R:FXO WW 100 R:FXCI

MET

K:FXO

MET FLM

R:Fxo

MET FLM

R:FXO

MET FLM

NUT ASS.IGNEO NOT

ASSIGNEO

R:FXD WW 10K

SWITCH:TOGGLE POWER

SdITCH:SLIOE

(l15V/230V SUITLH:SLIOE MOUN”[

RESISTANCE

ALUMINUM:SHEET

NUT:KNURLEO 1-72 THREAD SWITCH:TOGGLE SPDT

(FINE 2ERO)

TRANSFORMER:28.4V

8RACKET: TRANSFORMER

CABLE ASSY:5

CABLE ASSY:POHER CORO

CUNNECTOR:PRINTEO

IPART

CC)NNECTOR:PRINTED CIRCUIT 22-CONN

LAMPHOLOER

BASE:LAMPHOLOER

FUSEHCILOER: EXTRACTOR

NE–

OHM 5%

OHM

0.1%’ l/10W

OHM

0.1% l/10U

FLM 100 OHM

100 CIHM

100 OHM 1% l/i!W

3L.6K

OHM

DPOT

OPERATION)

3POT

0.063 THICK

00432–0006

FEMALE CONTACTS

MALE

LIN l-1/2W(SERIAL

0.1% l/10W

l/2W

OHM 1%

0.1% l/40W

0.5A 125V AC/DC

SEC.

CIRCUIT 22-CONN

DECK

POST

l/8W

LOWER)

TYPE

# See introduction to this section for ordering information

Section VI

Parts

Note

PREFIX 904)

PREFIX 919)

6-9

Section VI

Parts

Reference

Designation

@ Part No.

Table 6-1. Reference Designation Index (Cont’d)

Description #

Model 432A

Note

0403-0005

5020-0704 5040–0700 5040-0702

504G–45zd

00432-2003 00432-2004

00432-2005

bUMPER:

METER

HINGE lNSULATOR:CONNECTOR

LWIOE:PC BOARDIGRAY PLASTIC)

NIJT:ORkSS BUSHING:PANEL

NUT:CONNECTOR

BLACK RUBBER

TRIM: THIRD

MOO.

6-10

# See introduction to this section for ordering information

Model 432A

Section VI

Parts

Table 6-1. Reference Designation Index (Cont'd)

# See introduction to this section for ordering information

6-11

Section VI Parts

Table 6-2.

Model 432A

Replaceable Parts

@ Part No.

0140-0192 0140-0234 0150-0059 0160-0380 0160-0978

0160–2150

0160-2264 0160-2672

0160-2917

0160-2930

0160-3043 0180-0106 0180-0197 0180-0229 0180-0291

0180-0374 0180-1746 0180-1819 0180-1940 0180-2178

0360-0124 0370-0077 0370-0193 0403-0005 0590-0041

0683-0685 0683-1055

0683–1065 0686–1055 0698-0084

0698-3136 0698–3155 0698-3156 0698-3160

0698–3260

0698-3401 0698-3428 0698-3438 0698-3441 0698–3444

0698-3454 0698–3635 0698-4466 0698-6635 0757-0198

0757-0199

0757-0279 0757-0280

0757-0289 0757-0346

0757-0397 0757-0416 0757-0439 0757–0442

C:FXD MICA 68

C:FXD MICA

C:FXD

CER

C:FXD MY 0.2Z C:FXO MICA

C:FXD MICA 33

C:FXD

CER 20 PF 5X 500VOCW

C:FXD MY 0.047 C:FXD

CER

C:FXD

CER

C:FXD

CER .2 X

C:FXD ELECT 60 C:FXO ELELT 2.2 C:FXO

ELECT 33 UF 10% 10VDCW

C:FXO ELECT 1.U

C:FXO

ELECT 10 UF 10% 20VDCW

C:FXO ELECT 15 C:FXO ELECT 100 C:FXO ELECT 33 C:FXD ELECT 220

TERMINAL:SDLDER KNOB:>/8 KN08:BLACK BUMPER:BLACK NUT:KNURLED 1-7.2

R:FXD

LOMP

R:FxD

COMP 1 MEGOHM 5%

R:FxD

COMP

R:FxO

COMP 1 MEGDHM 5%

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXO

14tT FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM ,?15K

R:FXD

MET lJX

R:FXO

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM lK

R:FXD

MET FLM

R:FXD

MET FLM 10 OHM 1%

R:FXD

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

5(JO PF

3.3-LI.25

UF 10%

15011 PF 1%

PF 5%

UF 5% 80VOCM

0.05

0.01

0.005

UF 20% 6VOCW

UF 10% 20VOCW

UF 10%

UF 10% 15VDCW

UF 20% 8VOCW

SK bAR

RUBBER

6.8

OHM 5%

10M

OHM

2.15K OHM

17.8K

4.64K

14.7K OHM 1% l/8W

31.6K OHM 464K OHM 1% l/8W

215

14.7 147 OHM

215

316

680 OHM

976 OHM

880

100 OHM 1% l/2W

21.5K

3.16K OHM 1% l/8W

13.3K OHM 1% l/8W

68.1 511

6.81K OHM 1% l/8W

10.OK OHM 1% l/8W

Description #

500VDCW

200VOCW

500VOCW 28480

+80-20’% 100VDCW +80-20% 100VDCW

UF 20%

UF 10% 35VOCW

20VDCW

+75-10%

LUG

THREAD

5?4 l/4w

OHM 1% OHM 1%

OHM 1%

OHM 1% OHM 1%

OHM

OHM 1% l/13W

OHM 1% l/8W

OHM 1%

l/4W

l/2W

l/8W l/8W l/8W

1’z

l/8W

1%? l/8W

l/8W

l/8w

50VOCW

l/8W

250VAC

l/8W

l/8W l/8W

l/8W

Mfr.

28480

28480 72982 28480 0160-0380

28480 72982 301-000–COGD-200J 28480 84411 91418

56209 28480 28480 28480 28480

28480 28480 28480 56289 56289

28480 0360–0124 28480 28480 70485 28480

01121

01121 01121 01121 28480

28480 28480 28480 28480 28480

2B480

28480 28480 28480

28480 0698–3444

28480

28480 28480 0698–6635 28480

28480 0757–0199 28480

28480 28480 0757–0289 28480

8480

28480

8480

Mfr. Part No.

0140-0192 0140–0234 301-OOO–COJO-339C

0160-0978

0160-2150

0160-2672 TYPE TA TA

29C147A-CDH 0180-0106 0180-0197 0180-0229 0180-0291

0180-0374 0180–1746 01S0-1819 109D336X9O15C2-DYP 109D227XOOO8F2–DYP

0370-0077 0370–0193 #lo59 0590-0041

CB68G5

1055

1065 E8 1055 0698-0084

0698–3136

0698–3155

0698-3156 0698-3160 0698-3260

0698-3401

0698–3428

0698-3438 0698-3441

0698-3454 0698-3635 0698-4466

0757-0198

0757-0279

0757-0280

0757–0346

0757-0397 0757-0416 0757-0439

0757-0442

1 2 1 2

1 2 1

1 2 3 3 1

2 1 1 1 1

1 1 1 1

1 1 3 1 1

2 2 5

1 1

1 4 1

1 1

1 4

7 7

4 1

1 2 2

6-12

# See introduction to this section for ordering information

Model 432A

@ Part No.

[

Table 6-2.

Replaceable Parts

Description #

(Cont’d)

Mfr. Part No.

Section VI

Parts

0?57-0461 0757-0465 0757-0835 0757-1094

0s11–2277

‘0811–2284

0811-2534 0811-2535

0S11-2536 0S11–2537

0811-2538 1120–1497

1250-0118 1251-0148 1251-0172

1251-1280

1400-0084 1420-0062

1490–0031 1s53–0001

1853-0012 1853-0015 1853-0020

1854-0003 1854–0005

1854-0009 1854-L’039 1854-0062 1854-0071 1854–0221

1855-0G62 1901-0026 1901-0040 1902-0033 190Z-C048

2100-1769 2100-1770

2100-1773

2100–1775 2100-2659

2100-2849

2110–0027 2140-0015 31OG-2469

3100-2470

3101-0033

3101-0957 3101-1180

3101–1357

5000-0703 5000-0711

5020-0704 5040–0235 504fJ-C257 5040-C700

R:FXD

MET

R:FXD MtT FLM 100K R:FXD

R:FXD R:FXO WW 10K

R:FXD WW lK R:FXD HW 314.3

R:FXO WU 145.0

R:FXD

R:FXD WM 5K

R:FXO HW 100 METER CONNECTtiR:BNL CONNECTLIR:POhER CDNNECTOR:PRINTEO

CONNECTfJR:AUDILl FUSEHOLDER:tXTRACTOR 8ATTERY:RECHARGEA8LE STANO:TILT TRANSiSTUR:PNP

TRANSiSTCiR:PNP SILICON 2N2904A

TRANSISTOR:SILI(.ON TRANSISTOR:SILICON

TRANSISTOR:NPN SILICON TRANSISTOU:SILICON

TRANSISTOR:SILICON TRANSISTL)K:SILICL)N TRANSISTL)R:SILICON TRANSISTOR:SILICON

TRANSISTOR OUAL:SILICON NPN

TRANSISTOK:FIELD DIODE:SILICUN DIODE:SILICUN

DIOOE LWEAKLM3WN:6.2V

OIODE SREAKLMJWN:6.81V

R:VAR Wki 50 R:VAR WW 100

R:VAR Wti lK

R:VAR WW 5K R:VAR Wti 50K

R:VAR WW 50K

FUSE:O.125A LAMP:GLOW NEON SWITCH:R13TAllY SUITCH:RLITARY SWITCH:>LIL)E dPDT 0.5A 125V AC/OC

SWITCH:TL)GGLE

SWITCH:SLIOE

SWITCH:TOGGLE

SIOE LUVER

COVER:BLIT1”OM

METER TRIM:THIRIJ

BASE:LAMPHllLOkR

LAMPHOLLIkR

HINGE

FLM 68.lK OHM lZ l/SW

MET FLM

HET

6.81K OHM

FLH 1.47K OHM

OHM

0.1% l/40H

OHM

0.1% l/40W

OHM OHM

3167 OHM 0.1% l/40W

LIHM

0.1% l/4W

OHM

0.1% l/10W

6 FEMALE

SILICON 30V

EFFECT 30V C1.75A 200 PIV 30MA

OHM

10% LIN l/2W

OHM 10%

OHM

10% LIN l/2W

OHM 10!Z

OHM 5%

250V

NE-2H.

LIPOT

3PDT

SPOT

MOD.

OHM 1%

O.lZ l/40W

O.lX l/40W

PIN CIRCUIT 22-CONN

POST

PNP

NPN

2N3053

NPN NPN

30WV

LIN l/2W

LIN l-1/2W

1% 1%

MALE

CONTACTS

24V

900MW

2N3640

2N708

2N709

2N1701

LIN l/2W

LIN l-1/2W

l/8W

l/2W l/SW

TYPE

2S480 28480 2S480 28480 28480

2S480 28480 28480 2S480 2S480

2S480

28480 2S4S0 87930 28480

284S0

79515

2S480 28480 28480

04713 2S480

2S480 2S480 02735

07263 02735 02735 284S0 28480

28480 2S480 28480 04713

28480

28480 2S480 28480 2S480 28480

28480 75915 24455 28480 28480 79727

28480 82389

09353 2S480 28480

28480 28480 28480 28480

0757-0461 0757–0465 0757–0s35 0757–lo94 0811-2277

0811-2284 0S11–2534 0811-2535 0811–2536 0811–2537

0811-2538

1120–1497 1250-011S 1065–1 1251–0172

1251–12S0 342014 1420-0062 1490-0031 1853-0001

2N2904A 1853-0015

1S53-0020 1854-0003

2N708

2N709 2N3053 2N1701

1854-0071

1854-0221

1S55–0062

1901-0026

1901-0040

1N823 1902–004S

2100–1769 2100-1770 2100-1773 2100-1775 2100-2659

2100-2849

312.125

NE 2H

3100–2469 31OL)-247O. G326–0001

3101–0957

llL–1020

7109

5000-0703

5ooo–c171i

5020-0704

5040-0235 5040-0257 5040-0700

1 1 3

1 1 1

1 1 1 1

1 1

2 6

1 2 1

1 1 1

1 1

1 1 1

# See introduction to this section for ordering information

6-13

Section VI

Parts

Part No.

Table 6-2.

Replaceable Parts

Description #

(Cont ‘d)

Mfr.

Mfr. Part No,

Model 432A

5040-0702 5040-4528 5060-C703 5060-0706 5060-0727

7204-0004 9120-0078

9120-10s2

I1OI.-25O4 10432-0001

)0432-0002 )0432-0005 )0432-0006

10432-0007 )0432-0008

)0432-0009 )0432-2001 )0432-2003 )0432-2004 )0432-2005

)0432-2007 )0432-2015 )0432-6001 )0432-6003 )0432-6004

)0432-6007 )0432-6011 )0432-6015

IN SULATIJR:LUNNECTOR GUI OE:PL. FRAME COVER:TUP FOOT

ALUMINUM:>HEET CABLE AS>Y:PLIidER C.ORO CABLE ASSY:> TRANSFURMtR:.20.4V PANEL:FRUNT

PANEL:RtAt( BRACKET:TRANSFL)RMER OECK:LOW&R OECK:UPPEK

BRACKET:LiATTERY UPPER

BRACKET:13ATTEkY BOARO:BLANK NUT:DRE5S BUSHING:PANEL NUT:CLINNkt,TUR

BOARO:LiLANK

BOARD:BLANK

BOARO SWITCH ASSY:RANGE SWITCH ASSY:CALIBRATION

BOARO ASSY:AUTU .ZkRu 80ARD ASSY: LOGIC

tNJAKO( GRAY

A>SY:b X

A5>Y

ASSY:dklLJLE

ASSY:bATTERY

0.063 THICK

LOWER

SEC.

CHARGER

PLASTIC)

FACTCIR

2S480 284S0 28480 28480 5060–0706 28480

28480

28480 28480 28480

28480 00432-0002 28480 28480 28480 28480 00432-0008

284S0 28480 00432-2001 284S0 28480 28480

28480 00432-2007 28480 28480 00432–6001 28480 28480 00432–6004

28480 28480 28480

5040-0702 5040-4528 5060-0703

5060-0727

7204-0004 8120-0078

8120-1082

9100-2504 00432-0001

00432-0005

OOft3.2-OOOb

00432-0007

00432-0009

00432-2003 00432-2004 00432-2005

00432-2015

00432-6003

00432-6007 00432-6011 00432-6015

1 1 1 1 1

1 1

1 1 1 1 1

1 1 1 1

1 1 1

6-14

# See introduction to this section for ordering information

Model 432A

CODE LIST OF MANUFACTURERS

The following code numbers are from

(Name to Code) supplements used appear at suppliers

not

and H4-2

appearing

(Code to Name)

the

in the H4 HancGwoks.

bottom of each

TABLE 6-3.

the

Federal

Supply Code

and their latest supplements.

p!age.

Alphabetical codes

for

Manufacbm’ers

The tfate of

Cataloging Handtioks

rev,.won

have

and the

been arbitrarily assigned fm

date

H4-

of the

Section VI

Parts

cud.

No. nmvfocturef

0130110

U.S.A. Common

00136 MCCOY Electronics 00211 Sake EleG[rumcs Curp 0028? C8JZC8 IRC.

00334 HumdIal

00348 Ulclotlafi co. , inc,

003/3 Gaflock Inc. 0Q656 herovax Corp. 00119 Amp Inc.

007!31 Al fc!aff 00815 Nnrthzm EnK1fl&lln

00853 .!angano Electric Co.

00866 Gae En fmertmg Co.

00891 Carl E. Holmes carp, 8092! M!crolab inc. 01002 Gsneral Elecfr[c CO.. Capacitor DePi

81009 Alden Pfoducts Co.

0112J Al[eo B1adfey L%. 01255 Lfttan Indvslf! es, Inc.

012t I TRW Semtcendvctors, inc. 01295 Texas lnStFUnentS, lfl C,,

01349 The AilIamce k4ft, Co.

01S89 PacIi[c Relays, IIIC. 01930 Amefeck Carp. 01961 Pulse Engtneel, ng Co. t2114 Ferfoxcube corp.

021JS Wheelock SIgnalS, 02256 C.ale Rubbe! and PfastI[s inc. 02660 Am Phfmol

02735 Rad!o

02??1 Voc%lIne Cn at An!ef!ca, inc.

02777 H.pk!ns Eng!neermg Co.

03508 03?05 Auex 037S7 Ela’ema CorP 03877 Tran$ltfnn Electric Cerp ‘A’akefleldr Mass, Q3UaB d3954 SInKeI CQ,. D,ehl D,”.

04D09 Arcow, Ha,t and HetemaII Elect Co.

04QIJ Tau!us Corp.

040$2 A$cn Electronic NIC, 04?22 HI.Q D!v,saon of AeIvYox 0435b Prec, s!on Papef Tube Co. 04404 Dymec Drv, sIon of Hewlett.Packard Co

D%51 Sqlvama Electrzc Products, M[cro wave

04?11 tAoturo!8,

04?32 F,itron Co,

041?3 Au[omal, 04?96 Seqmola Wife co 04811 Pcmzs[on COII SPfIne 04B7D F 04919 component Mfg. $e$v!ce Co.

!35006 Twentseth Century Plastics, Inc.

1352?7

05347

R8L+<0

CorP

TransIs(Qr PrQducls D,V

lllC

2!01s

Eleclfomcs Carp. Chicago, III.

C@fP. of

and Ma[ef Ia[s DIV.

G. E.

Pyraf81m Res, sto! Co.

Flnde,ne Plant SvmeWllle, N.J.

DeYIce OIV

fA.

Westinghouse Eleclr[c Corp.

Sem<.

U!tmnlx,

Amierca, Semconducto[

Semiconductor Prod. OePf Syracuse, N, V,

Mach, ne & T!301

10C

$em[conduclnr Prod. Dtv.

inc. Westefn DIV.

Elect,,

Molar Call?pany

C.nd IIcIoI Dept Y0unew006, Pa.

Inc

Any supplier of U,

Mount Holly SPrlnE$, ?8.

Valley Stte&n, NY.

Liberator! es,

PIckens DIV.

City of Industry, Crl.

LOS AngelBs, Cal, f,

Hudson Falls, N,Y.

Beverly Hills, Calsf.

Amettct

Old Say bfook, Con”.

San Fe[nando, Cal If.

Co.

lnc

Mnunlam View, Ca13f.

Co. No[~hlake, III.

Redwood Ctty, CalI1.

Los Aneele$, Calif.

Address

Rochesfe[, N. Y.

Dmlie[sQn, cum,

Colhm, Ca[[f.

Cherly HII[, N.J

New B6df~rd, Mass,

Hafnsbutg, Pa.

Boonton, N.J.

IUC,

8u1Nngt0n, Wls.

P]ckeos, SC.

Livlngslon, N.J.

BCotkk?m, Mass. MllWaukee, WI%

Latmdale, C$lif,

Dallas, Texas

Alliance, Ohm

van NLWS,

Rotkfardr III.

Santa Clara, CalIf.

$augerti~s, N. V.

Long %fanch, N,J.

SuRny vale, Calif.

Soinerv[lle, N.J.

Dayton, Ohio

Conptan, CalIf.

Cedar Knolls, N,J.

Hartford,

Ccrn D,

Lam bertv,lle, N,).

GIeat Neck, N,Y,

k4yft16 Beach, S.C.

Wheeling, III.

Palo Alto, Cslif.

Phoentx, Amzona

Culver C,ty, Cd, f,

El Monte, Cal]f

Westchester, III.

B!!dgewafef, Mass.

S.M

uateo, Cal,

Code

Manufacturer

No.

05397 Untbn Calbtde Corp. , Ltnde DIV Kemet Oept.

05593 Illumltmn!c Eng, neeltog Co 05616 Cosmo Plast([

(C<O

05624 8a[bef Colman Co 0512S T!lfen Dptl,

05129 M6t!oTef 05?S3 Stewart Eog[neert”g Co 05820 Wake f!eld EnEIneerInK IRC

06004 Ba$.s!ck Co ,

OtPO$U

06)?5 Bausch and Lomb Optical Co 06402 E. T. A. Products Co of Ame[{ca 06540 Amatam Electmn8c Hardware Co , I“C.

06515 Beede Electrical Instrument Co , lnc,

06666 Genelal Devices Co Inc. Ind, anapolls, Ind 06751 06812 ToIIIoKton Mfg Co. , West DIV.

06980 VaIIan

07088 Kelvin Electric 07126 D,g, tran Co

Callf.

0713? T1ansIs lOi Electronics COIP.

011.38 Wesl, nghouse Eleclr!c COIP.

01149 F!lmohm Carp 07233 C!nCh G1aPh, 07261 Av~et CorP 0?263 Fa![ch]fd Camera

07322 Mtone sota Rub be, CO 01387 B,rtcher

01397 Sylvanla Elec( Prod Inc. Mt. View Operat[oos

07700 Techn\cal Wire P[oducts inc. 07910 Continental Device Corp 01933 Raytheon Mfg. co

01980 Hewlelt- Packard Co. , Boonton Rad!o D(v.

08145 US Eng, neet, ng Co 0B269 B(Inn, Delbefl Co 08358 Bulges% Battery Co,

08524 Oeulsch Fasfener Corp. 08664 Bristol Co,, The Waterbury, Corm. 08117 08?18 ITT Cannon Elecktc [nc, Phoen,

08192 CBS Electronics Semiconducta!

08984 Mel-Rain 0$026 Babcock Relays Dtv 09134 Texas Capac, tor Co 09145 Tech Ind Inc Atohm Elect, 09250 Elecfro Assembles, lnc, 09569 Mallofy Bat[ery co. of

10214 General Tranws (or Wesfern Corp

104II T,-Tal, I“c 10646 Carbomnd”m Co 11236 cTS of 8erne, lnc Befne, lnd

11237 Ch, cago Telephone

Elecf[tcal sPtc, Co.

Roslyn He!ghts, Long Island, N.Y.

~OIP

D,v ot Slewa[[ Warner

Raychem

COIP

Sem COl

OIV. Components Inc. Phoen ,x, Anz.

ASSOC.

Etmac D!,,

CO,

Elechon,

T,be D(v

Semiconductor DIV.

Sloan

C0mP8ny

Operations,

Canada, Ltd.

COIP

IIIS[

The

N!agara Falls, Ontarto, Canada

Ocv of C B S.

Cal! foma, Inc.

Cleveland, Dh,

Sunnyvale, Callf.

)

Cleveland, Oh!o

Rock fo{d, [II

Westbury, N.Y.

Sanfa Cruz, Calif,

Wake field, Mass.

COIP,

8rldgeport, Corm

Redwood C,fy, Cal!f.

Rocheste!, N.

Ch, cage, III.

New Rochelle, N.Y,

Penacmak, N, H,

Van Nuys, Caltf

San

Callos, Cal Van NUYS, Cal If. Pasadena, Cal If.

Mlnne apolls, Mlnn.

Elm, fa,

New Yo!k, NY,

City of [ndustcy, Calf.

Culver City,

COrP

k!0”llt810 View, Cal,

Mtnneapol,

Monterey Park, Cal If

Moun(a

V,ew, Cal If.

C!anfofd,

Hawthorne, Cal If

Mounlatn VIeW, Callf

Rockaway, N

Los Angef es, Cahf,

Pomona, Cal[f

Los AnKel es, Cal, f.

Sun Valley, Cal, t.

O(V

Phoen!x, Arizona

Inc.

Lowell, Mass.

Ind, anapol\s, Ind.

Cosfa Mesa, Cal[f,

HouSton, Texas

B“[bank, Cal,

Ch!cago, III

Ta!onto, Onta[ [o, Canada

Los AnEeles, Calil

Berkeley, C8111.

N<agara Falfs, N.Y.

So,

Pasadena, Cal If.

Address

C2111.

Code F& Mmufocfurer

11242 Bay Slate Electronics CoIp.

11312 Teledyne Inc. M!crowave DIV. Palo Alto, CalIf.

11314 Naftonal Seal

11534 Ouncan Elecf[omcs Inc. 11711 Gennral Instrument Corp. , Semiconductor

DIV. , Products 11717 Impertal Electronic, Inc. 11870 Melabs, Inc. 12136 Ph]ladelph[a Handle Co.

12361 Glove Mfg. Co. , inc.

12574

GultQn

12697 Clarostat Mfg. Co,

12728 Elmal F!lter Corp.

12859 NIPPOn Elect[ic Co., Ltd. Tokyo, JaPan

12881 Metex Electronics Corp. 12930 Delta Semiconductor Inc. 12954 D[ckson Electronics COIP, 13103 Thermoiloy 13396 TClefunken (GmbH) 13835 kfldland-Wr, ght Otv, o! PaClflc Indus!n es, inc.

14099 Sem-Tech 14193 Cal If, Rests to{ COrP, 14’298 Amet!cao Components, inc.

Cf.

14433 ITT Sem!conduc for,

& 14493 Hewlett-Packard Company 14655 Cornell Dubl]er Electric Corp. 14674 Corning Glass Works

14752 Electro Cube Inc.

14960 Wlf[lams Mfg. Co

15203 Webster ElecNon, cs Co,

15287 Sclonics COIP.

15291 Adjustable Bush!ng Co. 15558

MInn

M1C1OO

15566 Amprobe Inst. Co!p

15631 Cable frontcs 15772 Twent!efh Centu!y Coil Spr!ng Co.

15801 Fenwal Elecf Inc,

15818 Amelco Inc 16031 SPr”ce P!ne Mica Co }6179 Om”,.8Pectra f“c, 16352 Compute, O,ode Corp. 16688 [deal Prec. Meter Co. Inc.

Oe Jur Meter OIV. 16758 Oelco Rad!c OIV. of G. 11109 The!monel, cs lnc 17474 Tranex Company

17675 Hamlln Metal Products Corp.

17745 Afigstmhm Prec. inc.

17870 McGrawEd [son Co,

18042 Powef Oeslgn Pac, f,c I“C 18083 Clev!te Corp. Sem!conductol OIV.

18324 SlEn8tlc S

18416 Ty-Car MfE Co, , I“c 18486 TRW Elect Camp DIV. Oes Ptaines, Ill. 185B3 Curtts Instrument, Inc,

18813

E 1.

OIJPont and Co, , I“C, 18911 Ou[ant Mfg. Co, 19315 The Bend!x Corp. Nav,gatton k Control Oiv

19500 Thomas

McGraw -Ed, son Co, 19589 Concoa 19644 LRC Eltciron, cs

19701 Electra Mfg Co.

G{OUP

Ind. Inc. Data System D[v,

T018graph Cotp.

EteclfOm

COfP.

Ed, son Iodustrl es, DIV.

O!v, of In! Telephone

Garden C!ty, Long Island, N.Y.

Address

Waltham, M8SS.

Downey, Calif.

Cosfa Mesa, Calif,

Newark, N.J.

Buena Parkr Cal, f,

Palo Alto, Calil,

Camden, NJ,

Shady Grove, Pa.

Albuq”e[que, N. M.

Dow, N.H.

Haven, Corm.

Clark, N.J,

Newport Beach, Cal If,

Scottsdale, A1lzOna

Oallas, Texas

Hanover, Getmany

Kansas City, Kansas

Newbufy Pafk, Calif.

Santa Monica, Calif.

Conshohocken, Pa.

West Palm Beach, Fla,

Loveland, Colo.

Newark, N.J.

Corning, N.Y,

San Gabriel, Cabf,

San Jose, Callf. New York, N.Y.

North fidge. Calif.

N, Hollywood, Calif,

Lynb[ook, N. Y,

Costa Mesa, CalIf.

Santa Cfara, Cal If.

Ffam!ngham, Mass,

Mt. Vtew, Cal!f,

Sptuce P!ne. N, C.

Detroit,

Lodl, N.J.

Btooklyn, N, Y.

COIP.

KQkoma, fnd,

Canoga Park, Cal If,

Mountakn View, Cal

Aklon, Ohio

No ffolly wood, Calff.

Manchester, N, H,

Palo Alto, Calif.

Palo Alto, Calil.

Sunnyvale, Calif,

Hollls ton, Mass,

Mt. KISCO, NY. W!lmmglnn, Del,

M[lwaukee, Wis.

Tetelboro, N.J,

West Orange, N,J.

Baldwln Pa(k, Cal!f,

Hotseheads, N.Y.

Independence, Kansas

!11,

I1.

6-15

Section VI Parts

Model 432A

TABLE 6-3.

CODE LIST OF MANUFACTURERS (Cont’d)

Cnde No.

M.m.facturer

20183 General Atromcs Corp.

21226 Executone,

21335 Faln(r Bea IIn E Co The

21520 Fans(eel Metallurgical Corp

23783 B!ltlsh Rado Electronics Ltd

24455 G

24655 Generat Rad,

24681 Memc

26365 G!les Reproducer Corp. 26462 Grobet File Co of Ame(lca, Inc.

26992 Hamilton Watch 28480 Hewlett Packard

28520 Heyman Mfg Co.

33173 G E Rece, v(ng Tube Oep(. Owens boro, 35434 Lectrohm Inc 36196 Slanwyck

36287 Cunningham, W.H.

37942 P.R Mallory 39543 Mechanical Inaust(, 40920 Mr, alu(e P!ec IsIon Beal#ngs, Inc. 42190 Muter Co

43990

C A.

44655 Ohmlle Mfg Co 46384 Penn Eng 8 47904 Polarold 48620 Pleclslon Thermometer 8 IRS( Co.

49956 Microwave 52o9o Rowan Controller Co 52983 Sanborn Company 54294 Shall cross Mfg Co 55026 Simpson Elec(i 55933 Sonotone CorP 55938 Raytheon Co Commercial Apparatus

56137 Spauld(ng Flbfe 56289 Sprague Elecl!lc Co

59446 Telex

59730 Thomas 8 BEI!S Co

60741 Tr(plell Electrical Inst. Co 61775 Un,

62119 Un, versal Elect!\c Co 63743 Ward -Leor$ard Electr,

64959 Western Electr, 65092 Weston Inst Inc Weston.Newark

66295 W)ttek Mfe Co,

66346 M(nnesola Mtn(ng 8 Mfg Co. Revere M(ncom OIV.

70276 Allen Mfg Co 70309 Alhed Control 70318 Allmetal ScIew P!od”ct Co lnc

70485 Atlantic Ind, 70563 A. PerIle Co Inc 70674 AOC Ploducls lnC.

70903 Belden Mfg Co

70998 Bird Eleclfomc Co(p

71002 Blrnbach Radio Co,

71041 Boston Gear Walks

7121B Bud Radio, Inc. 71286 Camloc Fastener Corp 71313 Cardwell Condenser Corp.

71400 Bussmann Mfg. OIV of McGraw. Ed!son Co

(IIC

Lamp Dlvlslon

111 C

COm P,

CO, (

Products Ltd

& Co

Norgren Co

MIE

COIP

Power Tube DIV

systems D(”

COIP

on Sw,

tch and S#gnal,

Westlngho”se A!r Brake Co

c Co

Rubber Works, Inc

of Texas

Long Island CIfy, N.Y,

Nela Park, Cleveland, Ohlc

West Concord, Mass

0,”,

New Rochelle,

Hawkes bury, Ontario, Canada

HIII, Ltd.

Toronto Ontar(o, Canada

lnc

Plod, Co

Corp.

Inc

North Adams, Mass.

OIV

lnc

OIV of

Mulray Co.

L(ndenhurst L. I.,

Address

Phtfadelph (a, Pa

New Br(taln, Corm

N, Chicago, 111

W2shlngkon,

Huntington, Ind,

Ca(lstadt, N.J,

Lancaster, Pa. Palo Alto, Cal If, Kenllwoflh, N,J

Chicago, Ill.

Ind!anapol (s, Ind

Akron, Ohio Keene, NH. Chicago, III

Englewood, Colo

Skok,

Ooylestown, Pa.

Cambridge, Mass

Southampton, Pa

Walfh am, Mass,

Weshmn$(er, Md,

Walth am, Mass.

Selma, NC

Chicago, Ill

Elms ford,

Norwalk, Corm.

Tonaw anda, N.Y.

Tulsa, Okla.

Ellzabeth,

Blufftcn, Ohto

Plftsburgh, Pa.

OWOSSO,

Mt Ve!non, N.Y.

New Yo(k, NY

Newark,

N J,

Chicago, III

Paul, MInn.

Halt ford, Corm.

New York, N.Y,

Garden CIfy,

Ch(cago,

Union C!fy, NJ,

MlnneaQOlls, MInn.

Chicago, III,

Cleveland, Ohio

New York, N.Y.

Qu(ncy, Mass

Willoughby, Oh(o

Pa(am us, N.J,

St. Lou(s, Mo,

D C

Mtch.

11!,

Cnde No.

MOnufOcturer

71436

Chicago Condenser Corp.

71447

Cal If Spring Co Inc

11450

CTS Corp.

7)468

ITT Cannon Electr(c Inc,

11471

Ctnema,

OIV

71482

C P

71590

Cenka lab OIV. of Globe Union IIIc.

11616

Commelclal Plastlcs Co.

71700

Ill

Co!nlsh Wire Co The New York, N,Y.

11707

Coto Coil co lnc

11744

Ch(cago Mlnlalure Lamp Works

71785

Cinch Mfg. Co. , Howard B. Jones

71984

Oow Co

Electra Mot(ve Mfg Co

72136 72619

O,al, gh[ CO(P.

72656

lnd, ana General Corp. , Electronics

72699

General Instrument Corp. , Cap. O&

72765

Ofake Mfg. Co. Harwood He(ghts, Ill,

72825

Hugh H. Eby Inc.

72928

Gudeman Co. Ch, cage, III

72964

Robelf

72982

Er,

73061

Hansen Mfg. Co. , Inc.

73076

H,M. H2(PE(C0

7313B

Helloot

73293

Hughes P!oducts OIv!s Ion of Hughes

73445

Amperex Elect Co,

73506

Bfadley Semiconductor Corp.

Calf(ng Electrlc,

73559

73586

Ctrcle

73682

GPorge

Federal Screw Products Inc.

73734

F(scher Spec Ia Mfg. Co

73743 73793

General Indtistr, es Co The Elyr,

73846

Goshen S(amplng

73899

JFO Elec(roncs Corp.

73905

Jenn(ogs Radio Mfg

73957

GrOOv. Pln Corp. Slgnal(te Inc

14216 74455

J.H Wtnns, and Sons

74861

Industrial Condense! R F

74868

74970

E.F Johnson Co

75042

In(ernat, onal Resistance Co

75378

CTS Kn!ghts Inc. Sandwich, III

75382

Kulka Elec(r(c Co!porat, oo

75818

Lenz Elect(Ic Mfg Co,

75915

L(ttle fuse, Inc

76005

Lord Mfc Co.

C W

76210

General Instrument COIP. , M,cam old Olvlslon

76433

76487

lames M(llen Mfg Co. , Inc. Maiden, Mass.

76493

J.W Mllle! Co. Ctnch Mooadnock, DIV. of United cart

76530

76545

Mueller Electctc Co

Nat(onal Union

76703 76854

Oak Manufaclurlng Co. The Bend#x Carp

77068

71075

Pac,l, c Metals Co Phanos (ran Ins(r”men[ and Electronic Co,

77221

Aerovox Corp.

Clare& Co

fntng Corp.

Hadley Co,

Technological P$oducts, lnc Er(e, Pa

OIV of

Beckman Inst. , Inc

Al(craft Co,

IRC

Mfg. Co. T1enton, N.J.

Galret! Co , O(V, MSL

)ndus(rles Inc.

Products OIv!s Ion of Amphenol-Bocg

Electronics Carp Danbury, Corm

Marwedel

Fastener Corp.

Los Angeles, Cal If.

Inc. Wlllhm8nt (c, Coon,

Los Angeles, Cal Il

NewPo1t Beach, Callf

Hlcksvllle, L I N.Y.

Tool Co.

COIP San

COIP

San

Los Angeles, Caflf.

Electrodynamics OIV,

N, Hollywood, Cal,

San

South Pasadena, Cal If.

Address

Cblcago, III

PIco-RIve(a, Cal(f.

Elkhart, Ind.

Burbank, Cal Il,

Chtcago, III,

Milwaukee,

Chicago, III.

Prowdence, R. 1.

Chicago, III.

OIV

Chicago, III.

M!dland, Mlch.

Brooklyn, w Y

OIV

Keasby, N.J.

Newark, N.J.

Phlladelphta, Pa

Pf(nceton, Ind.

Chlcae,o,

Fullerton, Callf

New Haven, Corm

Hartford, Coon

Phlladelph (a, Pa,

Chicago, III

Clnclnn all, Oh(c

Goshen, Ind

Brooklyn, N.Y

Jose, Calf

R(dgef!eld, N.J.

Neptune, N

Wlncheste{, Mass

Ch)cago, III

Waseca,

M$nn

Phlladelph la, Pa

Mt Vefnon, N.Y.

Ch(cago, Ill.

Oes Planes, 11!

EIIe, Pa

F(ancls co, Calf

Newark,

San

Leand!o, Call!

Cleveland, Ohto

Newark, N.J,

Crystal Lake, III

Franc (sco, Calf

Code No

Mon. focturer

77252 Phlladelph$a Steel and W(re CoIp

77342 Amer! can Mach, ne 8 Foundry Co Potte,

Bfuml, eld D)v 77630 TRW Electronic Components 77638 General Instrument Corp Rectlfle[

77764 Res, sta, ce Products Co

WIS.

11969 Rub

fc!afl

78189 Shake proof Dlv, s(on of IIlfnols Tool Works

78783 Signal Ind, ca(or Corp 78290 St; uthe!s-Ounn Inc 78452 Thompson -Bremef k Co 78411 Tll:cy Mlg C“ 784B8 Stack pole Carbon Co 78493 Standa, 78553 T,nne [man Products, Inc 78790 Translo! me! Engineers 78947 Uclnlte Co 19136 Waldes Koh]ooo( lnc 79142 Veede[ %00(, Inc 79251 Wenco Mfg Co 79127 Conllreotal Wrt Eleclran, cs CoIp

19963 Z(e[, 80031 Mepco Olws{on of Sess$on$ Clock Co

Ill.

BO120 Schn, fzer Alloy Products Co 80131 Elect lonlc Ind”str (es Association. Any brand

80707 Ummax Switch

80223 Un, !ed Translo, mer Corp 80248 Oxford Electrlc Corp

80794 Bourns lnc 80411 Acro

804B6 All Stat Products inc.

80509 A“ety Label Co

Ohio

80583 Hammarlund Co 80640 Stevens, Arnold, Co lot 81030 Inlernat, onal Ins L!uments Inc 81073 Grayhrll Co

81095 Ti, 81312 Winchester Elec O(V, Lltfon Ind lnc

81349 Mll, fary Speclflcat\on 81483 Inter nal(onal Rectlf, er 81541 AIIPa X Electronics, 81860 Bar(y Conl!ols OIV. Barry W!ght CoIp

82042 Ca!(er Prec 82047 Speft( Fa!aday

82142 Jeffeis Electron,

82170 Fa(rchlld Carne{a

N J.

82209 Magwre Industries, lnc B2219 Sylvan(a Electr(c Plod Inc

B2376 AsIron Co!p 82389 Swltchctaft, lnc 82647 Melals

82768 Phlll<p s-Advance Cont!ol Co 82B66 Research Products Corp.

82877 Rotmn Mfg Co Inc.

82893

COID of

Thomson Corp Walfh am, Mass,

M(g Corp

Tube mee(lng EIA Standa!ds-Washington,

OIV

OIV O(

Robe! lshaw Controls Co

IOC

Transformer Corp

Ion Elect[tc Co

IOC

Electr,

c O,v

Cat bon Co

System DIV

Etecl!oa(c Tube O(wslon

Vectol Electroolc

Controls Inc. Spencel P[od”cts

Phlladelph la, Pa.

P(lncelon, I“d

OIV

Camden, N J

OIV

B!ooklyo,

Calf

Maxon Electronics

CO,D

(IIC

Copper Hewtt

OIv Is(on of Speer

Inst. Corp. Space L Oefense

East Newark, Hacll son, N,J,

Ha[[, sb”rg, Pa

Tolrance, Cal(f

New York,

P(tman, N.J,

Ch{cago, III

San

Ffanc(sco, Callf

Marys, Pa

Cleveland, Ohio

San

Gabr, el, Caf(f.

Newton v,lle, Mass

Long Island C,ty, N.Y

Ha ftford, Corm

Ch, cage, III

Ph,ladelph(a Pa,

New Rochelle, NY

Morristown, W,J

El(zabtth, N.J

COID

Wall, neford, Corm

New Yo,k, W

Ch(cago, Ill

R,vers, de, Cal,

Columbus, Ohio

Oef, ance, Oh,

Mon[ov la, Callf

New York, N Y.

Boston, Orange, Corm. LaG!ange, Ill Venice, Caltf,

Oakv)lle, Corm.

El Segundo, Cal,

Cambridge, Malyland

Watertown, Mass.

Skokle, Itl.

Ho boken,

PaIam us, N.J.

Greenwich, Corm

Emporium, Pa

Ch(cago, Ill,

Attleboro, Mass,

Joltet, Ifl.

Madison, WIS.

Woodstock, fl.

Glendale,

Address

N Y

Elgln III.

M2SS

BOIS, Pa

Cal If.

f”

NJ.

6-16

Model 432A

Section VI

Parts

TABLE 6-3.

CODE LIST OF MANUFACTURERS (Cont’d)

Code No.

k40nufactiFer

Carr Fastentc CD. Cam bfidga,

flew

Hampshtre

General instrument Corn CaDacI[oI DIV.

ITT W:rfi and Cable Dir

83142

63)2.1

Vlctofy Enc. Corp.

Ber!d!x CmP Red Bank Dry Red 8ank,

‘9329#

Hubbell COlp.

83315

Smith, Hefman H. Inc.

8333G

TeCh Labs

$333i

Central

s33&5 83s01

GavIlt Wefe

DIV. ef Amerace Co!p.

13u!coughs Corp. Electronic Tube DIV.

Unfon Cerb!de Co!p. CDn$umer Prod. Div.

837*O

83777

Moiiel EnE arid Mfg., Inc

83621

Loyal Scrufigs Co

Aetonauf Ical lust. 8 Rad,n Co.

S3%42

Atco Elec[rontcs Inc.

84i71 84396

A.J Gle%eneI CO, !nC. TRW CaPaCl!O1 01, Oga[l ala, Neb.

&4411 849?0

Sarkes Tarztan, lnC

85(54

80nmt00 Moldtng Company 8uon1

9.lk71

A,B. Etnyd Co, R,M, Efacamonie L Co.

85474

NoIled Kords, Inc.

9S660

Seamless Rubber Co.

859 i3 861s7

Cltflon PIec,

B6S19

Pcecfs Ion Rubber Products Co!p.

86684

Rad]o COW. of

Comp. b Dances D,v.

Mafco lndustr [es

B7034

?h,lco Corpola{,on (Lansdale

!7216

Western Ftbrous Glass Producls co

874?J

‘#M Walers & RDEBIS Inc.

%766{

Tower Mfg. CoIp,

S7930

CutlerHammer,

88148 68220

Go.ld. Nat!onal Batte!! es, Inc.

General

88698

Gray bar Elect[,

89231 89473

G. E

B9665

Un’ted Transformer Co,

9131J9

Rubber Co. Consumer Ind,

Plod D,,

Bearing Engneertng Co.

$1146

ITT

Cannon

9[250

Corm{ Spung Mfg. Co, fk!ller 0,81

91345

Ball Beacmg,

lmc.

Cable Co,

Products Co, , Inc.

ElecNOni

Salem

Palisade,

San Francisco, Calif,

San Francisco, Calif. San F1anclsco,

San San Franc, scn, Calil,

San

San Frznc Isca, Calif,

Strew

CO.

and

s+oo

Am%tlca,

IRC.

HIIIs,

IOC,

D[str(nut)ng Corp. Schenectady, N, Y

Elect, Inc. ,

Nameplale co

Add.ss

Mass.

Pete! botough, N, H.

Darl! o&ton,

Los AnPeles, Ca[If.

Clifton HO, ghts, Pa.

V(S, O”)

Spll;gf, eld, N.J.

Mundela{n, III.

Erooklyn, N.Y.

Park, N.J,

Chkcago( [Il.

8r00kfiei6, Mass.

Plainfteld, N.].

New York, N.Y, Huntington, Ind.

Festus,

Led,, N.J.

Great Neck, N.Y.

Blvnm!ngiom, Ind.

@n,

Cal

Hamdec,, Corm,

Chicago, Ill,

Dayton, Ohio

Harrison, N.J,

Anaheim, Cal It.

Lansdale, Pa.

Franc fsco, CalIf

Providence, R. 1,

Lincoln, III.

St. Paul, Mlnn,

Buffalo, N.Y.

Oakland, Caf[f.

Ch!cago, III

Plast!cs

Passatc, N.J.

Ftanc, sco, Ca[Il,

DIV. Salem, Mass.

El Monte, Cal If.

MQ.

Code

Mmufocturer

R2d!o Mater[als Co.

91410 91506

Augat

91637

9)662

9)731

91227 91886 91929

91961 92180

92367

92601

92102

92966 93332

93369 93410 93929 94131 94144

94148

N.J.

94154 94197

If.

9422? 94330 94682

94696 95D23

9S236 95238 95263 95265 95275 95348 95354 95566 95712 9$984 95907 96061 96095 96256 96296 96330 96?41 96501

IIIC.

Oale Electromtcs, Inc. Columbus, Nebr. Elco Co,p WIflOw Grove, Pa. Gremar Mfg. Co. , inc. K F

D?vefopn, ent Co Malco MIg. Co. ( inc. Honeywell Inc MICIO Swftch OIV.

Nahm. Bros,

SPIIOK

Tr”. Connector CofP.

Elgeet ODIIcal Co Inc.

Tensol,te Insulated Wire Co. , inc.

IMC Magnetc$ Co!p. Wesbury Long Island, N.Y. Hudson Lamp Co, Sylvan!a Electrlc Plod, Inc.

Sem]ccmductoc DIV Robbms .S Myels I“c Slevens Mfg. Co Inc

G.v.

controls

General Cable CO(P.

Raylheon Co Comp. Oiv. , Ind.

Comp, Operatons

Sctenttfbc Electronics Products,

Wagner Elect. Corp. Tung-Sol O(V. Newa!k, N.J, Curtlss.Wught Cofp. Electronics OIV.

South Che%tec Carp Wire Cloth Products, Inc. Wofcester Pressed Al”m!num Corp.

Magnec[att Elettr, George

All!es Products CorP

Con!lnental Connector Corp. Leec! aft Mfg. Co. inc. Nat(onal Co!l Co V,tram on, [“c Gordos COrP,

Methode Mfg. Co. A[nold Engmeenng Co.

Dage E[ec!IIc Co. , inc.

Siemon Mfg. Co. Weckes set Co, NugEIns La bofatortes HI-Q OIV. of Aerovox Corp. Thordacson .Melssner lnc, Solar Manufactuc!ng Co. Carlton Screw Co, Microwave Associates, inc.

Excef Transformer Co,

Ph(lbr!ck Researchers, lnc

Redwood CItY, Cal If,

Co.

Palisades Park, N.J

East Paterson, N.J.

Rolf[ng Meadows, Ill,

Los Angeles, CalIt.

Chicago, [[l.

Attlebolo, Mass.

Wake f[eld, Mass.

Ch(cago, III.

Fleeporl, III.

Oakland, Caltf.

Peabody, Mass.

Rochester, N.Y.

Tarcy town,

Keamey, N,J,

Wobucn, Mass.

Mansileld, Ohio

L!v[ngston, N.J.

Bayonne,

Qu[ncy, Mass.

IOC

Loveland, Colo.

Chester, Pa.

Eiell wood, III.

Worcestec, Mass.

Ch!caEo, Ilf.

Boslon, Mass,

Oa” Ia, Fla.

Woods] de, N, Y.

LOOK

Island, W,Y.

Sher[dan, Wyo,

Bf, dgeport, Corm.

8100mfleld,

Malenga, III.

Franklfn, Ind.

Wayne, Ilf.

Ch)cago, tlf.

Sunnyvale, Calif.

Olean, NV.

Mt. Carm@l, III.

Ch!cago, Ill.

Burllnglon, Mass,

Oakland, Calif.

Address

Code No.

Manufacturer

97464

fndustnal Reta, n!ng Rtng Co

97539

Automat[c 8 P!ec, sion Mfg.

97979

Reon Reslslor Cotp.

97983

Lttton System Inc. Adlet.Westwx

Commun. O(V.

R. Tronc Is, inc.

9B141 9B159

Rubber Teck, lnC,

98220

Hewle!t. Packa[d Co. , Mosel.$y O,v,

98278

M!crodol, Inc.

98291

Sea fec[ro Corp.

98376

ZerQ Mfe. Co.

98731

General

98734

9B821 98978

99109 99313

N J,

99318

99515

99707

99800 9984B 99934 99942

99957

THE FOLLOWING HP VENOORS ffAVE NO WUMBER ASSIGNED

FE OERAL SUPPLY COOE FOR MANuFACTURERS

HA No BOOK.

OOOOF Ooooz

OOOAB 000BB

000CS Hewlett. Packard Co. Cololado Springs

000MM 000NNA “N’(

000QQ Cooltron

Oooww

onnYY

MIIIs Inc. , Efec![onlcs OIV.

Paeco DIV. of Hewlett. Packard Co.

Noflh Hills Electromcs, inc. lnter”al, onal Elec Nonrc Research Carp,

Cbfumbla Techn, caf Cracp. Vartan Associates &tiee Corp.

Marshall [rid. , Capacitor OIV.

Conhof Switch OIvIs Ion, Contwls Co.

of Amer!ca Oelevan Electronics Cotp, WIICO

Corporation

Renb8andt, lnc,

Hoffman Electron, cs Corp.

Semiconductor O,v.

Technology Instrument CarD of Calif.

THE LATEST SUPPLEMENT TO THE

Ma[co Tool an6 OIe Wtllow Lealhef Products Corp.

ETA Prec4st0n Instrument Compane”ts Co.

Rubber Eng. .S Oevelop,nent

Mfg. Co.

C811f0tf11a Eastern Lab. S. K.

Smith Co.

Address

Irv(”gton, N.J.

Englewood, N.J,

Yonkers, N.Y.

Wew Rochelle, N.Y.

Jama[ca, NV,

Gardena, Calif.

Pasadena, Cal}f.

So.

Pasadena, CalIf,

Mamaroneck, W.Y.

Burbank, Calif.

Minneapolis, Minn.

Pafo Afto, Calif, Glen Cove, W,Y.

Burbank, Calif,

New York, N.Y,

Palo Alfo, Calif.

Winchester, Mass.

MomovIa, Calif.

El Segundo, Cal!f. East Au IoIa, N,Y.

lndlanapolis, ind.

Boston,

M@ss.

El Monte, Calif.

Wewbury Palk, Cal!t.

Los Angeles, Calif.

Newavk, N.J,

England

Van Ntiys, Calif.

Colorado SpmgS, Colorado

Hayward, Calif.

San

Jose, Calif,

Oakland, Calif.

Burlington, CalIf,

Los Ange18s, Calif.

6-17

Model

432A

Troubleshooting, Schematics

Section VII

SECTION Vll

TROUBLESHOOTING, SCHEMATICS, AND

COMPONENT LOCATIONS

7-1. INTRODUCTION.

7-2. This section contains troubleshooting instructions, schematics, and component locations for t h e power meter. gram that indicates the location of test points in the instrument.

7-3. Reference designations shown within circuit card outlines are abbreviated. To find the part in the Parts

List, use the full reference designation. For example,

R6 on the A2 Meter Logic Assembly is listed as A2R6. 7-4. The Schematic Notes in Table 7-1 pertain to all

the schematics. Additional notes on the schematics indicate test conditions, and special information for use when maintaining the instrument.

7-5. TROUBLESHOOTING.

7-6. Table 7-2 is the Overall Troubleshooting chart for the power meter. Procedures for isolating circuit malfunctions to specific stages are based on the use of the HP 8477A Power Meter Calibrator and the cali bration procedures in Section V. The information obtained when calibration is attempted is used to troubleshoot the instrument.

7-7. Table 7-2 contains references that direct the user to the detailed troubleshooting charts, Tables 7-3 through 7-11. The detailed charts refer the user to transistor stages. In a few instances, specific parts are called out as being possible causes of circuit malfunction, however, the troubleshooting charts are not intended to locate specific parts that have failed. They are intended to locate only malfunctioning stages.

7-8. SCHEMATICS.

7-9. The schematics contain signal routing infer mation, nominal voltage levels, and notes that assist in understanding the circuit. They are 1aid out to show electrical operation, and are not int ended as wiring diagrams.

Also included is an overall block dia-

7-10. Component location photographs next to the schematic foldouts indicate the physical location of

parts. Test points are also shown, and are marked

on the schematic in the same manner as they are in

the meter.

7-11. Factory selected parts are indicated by an as-

terisk. These are components that generally are in-

stalled to fulfill circuit operation requirements. They may be the nominal value, or they may be some value close to nominal. In any case, if the component fails, circuit operation should be verified after these com-

ponents are replaced.

7-12. AlAl AUTO ZERO ASSEMBLY.

7-13. The Auto Zero circuit is encapsulated and must be replaced as a unit. A solder removing tool, such as the Soldapullit suction device listed in Section V, is required to remove solder around the leads. After solder is removed, the unit must be carefully removed

f romthe circuit card in such a manner that the circuits

on the card do not delaminate. After the Auto Zero

assembly is replaced, perform the adjustment pro-

cedure given in Section V.

7-14. TEST CONDITIONS.

7-15. For most tests of circuit operation when troubleshooting the instrument, t h e troubleshooting charts call out control settings. In special cases, notes on

the schematics indicate control settings required to

measure voltage levels in circuits. Generally, t h e

following control settings should be selected, and

changed only as the troubleshooting procedures indicate:

Raffle . . . . . . . . . . . . . . . . . . . . . . . .

MOUNT RESISTANCE . . . . . . ...200 (Mount installed)

CALIBRATION FACTOR . . . . . . . . . . . . . . . . . . . . ...100

COARSE ZERO . .

. . . . turn until meter is at full scale

.3 mW (-5 dBm)

7-1

Sect ion VII

Troubleshooting, Schematics

Model 432A

Table 7-1. Schematic Notes

7-2

HP Model 478A Thermistor Mount

GENERAL INFORMATION

1. INTRODUCTION.

2. The HP Model 478A Coaxial Thermistor Mount isdesigned for use with HP Model 431 and 432 Power

Meters to measure microwave power from 1µW to

10 mW. Design of the mount minimizes adverse effects from environmental temperature changes during measurement. For increased measurement

accuracy, Effective Efficiency and Calibration Fac-

tor are measured for each mount, and at selected frequencies across the operating range; the results are marked on the label of the instrument (see Paragraph 31). the 10-MHz to 10-GHz frequency range, Through-

The Model 478A can be used over

out the range, the mount terminates the coaxial input in a 50-ohm impedance, and has a SWR of not more than 1. 75 without external tuning.

3. Each mount contains two series pairs of thermistors, which are matched to cancel/the effects of drift with ambient temperature change, Thermal stability is accomplished by mounting the leads of all four thermistors on a common thermal conductor to ensure a common thermal environment. This conductor is thermally insulated from the main body of the mount so the thermal noise or shocks applied externally to the mount, such as those from handling the mount manually, cannot significantly penetrate to disturb the thermistor. This thermal immunity enables the thermistors to be used in the

8-1

Model 478A

Tablc 1.

requency Ranxe: 478A: 10 MHzto

mmt Calibration:

Efficiency furnishedat

MHz and 10 GHz.

[npedance: 50 ohms.

aximum Reflection Coefficient:

10 to 25 MHz: 0.273 (1.75 SWR. 11.3 cfB rcturl-

10ss) .

25 MHz to loss) .

7to 10 GHz: 0.2 (1.5 SWR, 14 dB return

pcrating Resistance:

ower Range with Model 431 and 432A: 1 pW to 1[

mW.

aximu~ Peak Power: 200W’.

‘aximum Average Power: 30 mW.

laximum Energy per Pulse: 10 W . PS for a PRI zlkHz:5W.

lements:

thermistor

adjustable so that full “zero-set”

restored

(mount calibration

F Connector:

connectors

71 or MIL-c-39012.

utput Connector: Mates with 431 and 432 cables.

~eight: Net.

Uncertainty

Sum

Freq.

(GHz)

1.0

3.0

5.0

7.0

8.2

9.8

12.4

15.0

18.0

*Includes uncertainty

transfer uncertainty. In addition following for the indicated 431 ranges:

0.1 mW, When using the 432 Power Me~cr no additional uncertainties

GHz: 0.13 (1.3 SW’R. 17.7dB retorr

ps for a PRF

Field-replaceable,

assembly.

the event of inadvertent

Type -N male. compatible

whose dimensions

5 oz

Efficiency Data for 478A

Uncertainties

Cal.

Factor

2.3

“2. 8

3.6

3.7

2.8

6.3

10.7(’( : 0.03 nlW. 1,5(’: 0.01 n]W.

Spccificatif]ns

10GHz

Calibration

(140 g). Shipping. 1 lb (450 g).

Calibration

Effective

Efficiency

2.3

3.1

3.5

4.1

3.5

3.1

4.6

4.8

the listed uncertainties.

are cncoujltcr(’d.

Factor and Effective

six frequencies

200 ohms.

kHz.

thermally

Thermistor

longer valid).

Brass connector.

(7)

Directly traceal)lc to NBS.

conform to MIL-C

Factor and Effective

Uncertainties

‘Cal.

Factor

reference

between

assembly fielc

capability can bf

with femah

Probable

Effective

Efficiency

1.1

1.6

2.1 2.1

1.3

2.1 I 1.6

2.1

standard and

O. 3“

10SS)

balanced

overloat

(T)

1.1

1.6

1.3

1.6

add the

—

-measurement

tvatt region.

4. INCOMING INSPECTION.

5, Inspect the Model 478A upon receipt for mechanical damaye. Also check it electrically; subjected k) severe mechanical shock during shipment. the match bctw’een the thermistors check thermistor agraph 58.

6. If any damage is found. inform the carrier and your nearest HP Sales and Service Office immediately.

7. PRECAUTIONS.

8. MECHANICAL

9. EON OTDROPORSUBJECT

ICAL SHOCK. SHOCK MAY DESTROY THE MATCH

BETWEEN THERMISTORS BILITY TO DRIFT.

10.

BIASING THERMISTORS.

Before connecting the Model 478A to the 431 or 432 Power Meters, set the MOUNT RES switch to 200-ohnl position. CONNECTING

A 200-OHM MOUNT TO A POWER METER

SET FORA 1OO-OHM MOUNT CAN RESULT IN THERMISTOR

11.

MAXIMUM INPUT.

12.

The Model 478A 431 and 478A 432 combinations spend to the average RF power applied. The maximum signal applied to the thermistor the limitations and 3) peak pulse power. Excessive nently damage the Model 478A tw’een the Rr and compensation in excessive dicated power.

13. AVERAGE POWER. The 478A 431 and 478A ’432 combinations To measure power in excess of 10 nl~’. insert a calibrated directional

770 series or 790 series between the mount and the source. UNDER NO CIRCLTMSTANCES THAN 30 nlw AVERAGE POWER TO THE MOUNT.

14. PULSE ENERGY AND PEAK POWER FOR 478A 432 COMBINATION,

energy per pulse must not exceed 10 WJ-IJS and peak power shoL]ld never exceed 200 watts. (For example, a 40 nlW, 250 ps pulse contains 10 W-us of energy. )

Pulses lfm~cr lhan 250 ps arc all(,ivmf to ronb~in murc c]]cr~y Imt peak po~vcr n]ust not [>XC,CWI 40 n~W. Fi~ures 1 a]]d

lack (d space, the mount nameplate lists only a

mlcr[~\rave p[)!!c,r d[)lvn ttl [he nlicr[>-

the mount was

ma[ch. proceed as described in Par-

OPERATION

SHOCK

AND INCREASE SUSCEPTI-

CAUTION

DAMAGE.

for 1) average power, 2) pulse energy

drift or zero shift) or cause error in in-

can measure average power up to 10 row’.

coupler such as one of the HP Model

For pulses shorter than 250 ps.

interprel tl}rsc linlits In ~raphical form. (For

may be affected. To

SEVERE hlECHA!S-

mount should not exceed

by’

input can permaaltering the match bethermistors

(resulting

APPLY MORE

W-ps

8-2

Model 478A

Figure 1. Maximum Power Meter Reading vs PRF for

Pulses Shorter than 250 µs

limit, a rating which applies to the 478A 431 combina-

tion. )

15. PULSE ENERGY AND PEAK POWER FOR 478A/ 431 COMBINATION. The limitations of this combination are basically the same as the 478A 432 with the

exception that at pulse repetition rates less than 1 kHz, energy per pulse must not exceed 5 W-Us and peak power must not exceed 10 mW. These limits are also

interpreted in Figures 1 and 2.

16. Square-wave modulation is a special case of pulse modulation, and maximum power-meter reading versus square -wave frequency is illustrated in Figure 3. This figure also holds for sine -wave modulation.

17. In the discussions above, the primary considerstion is maximum power or energy, However, for modulation frequencies less than 100 Hz, the low repetition frequent y itself causes errors in indicated power. These errors may be as large as two percent regardless of range or reading.

Figure 3. Maximum Power Meter Reading vs Square

18. When RF is switched by pulse-gating (coaxial solid state switches), consideration must be given to the RF energy contained in the switching pulse itself. energy must be added to actual RF pulse power when estimating the RF power dissipated in the ther mister mount. PIN diode modulators of H P Model 8741A/ 8716A Modulators and 8614A/8616A Signal Generators, however, are not subject to this consideration because output filtering prevents transmission of modulating signals.

19. DRIFT PRECAUTION.

20. Thermistors are inherently temperature -sensitive devices, A cold thermistor mount connected to a warm piece of equipment, or vice versa, produces rapid drift.

FOR MINIMUM DRIFT ON SENSITIVE RANGES, MAKE SURE THAT THE MOUNT AND THE EQUIPMENTCONNECTED TO IT ARE AT NEARLY THE SAME TEMPERATURE BEFORE MAKING A MEASUREMENT.

21. ZERO-SET.

22. It is necessary to electrically zero-set the Model

431/432 Power Meter before making a power measure-

ment. To preserve the same zero reference through-

out the measurement, maintain the same thermal environment when RF power is applied. Two recommended

set-ups for 431 zero-set up are presented in Paragraphs

23 and 25. The recommended set-up for zero-set in the 432 is shown in Paragraph 30.

and Sine -Wave Frequency

This

Figure 2.

Maximum Power Meter Readings vs Duty.

Cycle for Pulses Longer than 250 µ

23. RF POWER TURNED OFF FOR ZERO-SET.

24. There is minimum zero drift when the zero is set with the RF system connected to the thermistor mount and the RF power switch off or greatly attenuated by the generator attenuator,

RF output in HP signal generators are listed in Table

After allowing time for the mount to stabilize thoroughly, follow zero-set procedures in the 431 or 432 Power Meter manual and then turn on the RF source.

The methods used to switch off

8-3

HP Generator

Table 2. Methods of Switching Off RF Output of Various HP Signal Generators

Frequency Rangc

Proedure to Switch 0ff RF Output

Model 478A

Model 606

Model 8614A 8616A Model 614 616

Model 618 620

Model 608

Modcl 682 687

—

Model 612

Model 690. 8690

50kHz to 65 MHz Increase the generator output attenuation 30 or

800 to 2400 MHz 1800 to 4500 MHz Release RF pushbutton 800 to 2100 MHz 1800 to 4200 MHZ Set modulation selector to OFF

3.8 to 7.6 GHz 7 to 11 GHz Set modulation selector to OFF

10 to 480 MHZ 10 to 420 MHz Set MOD SELECTOR to PULSE . but do not apply 1 to 2 GHz 12.4 to 18.0 GHz modulation signal to modulation input terminal

450 to 1230 MHz

1 to 20 G

Series

25. THERMISTOR ZERO-SET.

26. 478A 431. When it is inconvenient RF power in the RF system. connect the Model 478A mount to the RF system and set RANGE on the Model 431 Power Meter for an approximate

ing. When the reading no longer drifts, disconnect

In the proximity of a high RF field, shield the disconnected possible stray RF pick-up during the zeroset.

MOUNT DISCONNECTED

Note

thermistor

turn off the

midscale read-

mount from

FOR

more dB

—

Set MODSELECTOR to PULSE 2, but do not apply modulation signal to modulation input terminal

Set LINE to STANDBY

mount from the source, terminate the mount, if necessary, as described in Paragraph the power meter. Immediately the RF source for the power measurement,

27. With the Model 478A mount connected to the RF

the

system. the source impedance thermistors is disconnected, Unless source impedance is high, this variation in impedance affects the RF bridge 10-kHz feedback loop in the power meter, and the zero-level with the source disconnected measurement. inating the mount in an impedance which approximately matches the generator impedance at 10 kHz: the termination should be connected while the mount is disconnected (see Paragraph ample, if the impedance to 10 kHz is low (1K ohm or less) terminate the thermistor mount in a 50-ohnl resistor or a short. On the other hand. if the impedance.of is high (100 Kohms or more) leave the thermistor unterminated

(see Figure 4); when the hfodel 478A mount

the source impedance

This error can be eliminated

26) from the source. For ex-

durin~ zero-set.

27, and then zero-set

reconnect the mount to

shunts one of the RF

is no

presented

the RF system at 10 kHz

setting obtained

longer zero for the

the RF system

removed.

term-

mount

Figure 4.

8-4

Source Impedance Shunt in+ One RF Thrrm

istor Mount

28. Note that some 10-kHz bias signal is coupled into the RF transmission RF source output impedance at 10 kHz is 15K ohms or greater, 10-kHz bias, voltage is typically 1.3 and could equal 1.5 V RMS. For an RF source output impedance of 50 ohms at 10 kHz, bias signal voltage is typically

29. Theprescnce solid state RF sources and RF voltmeter measuremcllls, To minimize or eliminate these effects. use an addi -

tional l)locking capacitor at the iVt)rfel 478A or a hi@]pass filter at

30. 478A ‘432. When it is inconvenient R F power off w,hile usinx the 478A 432 combination

simply remove the n]ount from the snurce, and using the COARSE and FINE ZERO, zero the 432.

5 mV I?

l}]e RF

system by C2 (Figure 5). If the

MS.

this 10-kIIz l)ias signal m~y affcrt

source output.

RMS

turn the

Model 478A

Figure 5.

istor Mount when Connected to a 431 Power Meter

31. MOUNT CALIBRATION

32. The calibration each 478A allow power measurements increaaed accuracy. Effective Efficiency are given at six frequencies 10 MHz and 10 GHz. The mounts are tested on a sweptfrequency basis to assure accurate interpolation calibration Efficiency values are traceable to the National Bureau of Standards to the extent allowed by the Bureau’s calibration facilities.

33. CALIBRATION the ratio of substituted stor mount to the microwave the mount.

34. Calibration

a thermistor

of error: 1) RF reflected match. 2) RF loss raused by absorption within the mount but not in the detection Thermistor elements. to-microwave

Factor is applied as a ccmrection factor to all measurements made without a tuner. When these factors and thermoelectric into consideration, that would be delivered by the R F source to the characteristic total SWR in the (ransmissiun of uncertainty is discussed in Application Ii’&wlett-Packard

Schematic Diagram of a 3$odel 478A Thernl -

DATA.

points imprinted

Values of Calibration

points.

Calibration

mount to correct for the iollowin~ sources

impedance

NOTE.

Calibration

FACTOR.

audio or dc power in a thermi-

Factor

Factor is a figure of merit assigned to

power subst itut ion error,

effect (refer to Paragraph

the power incfiratcd is the power

the transmission

about the measured poux?r. This suhjcct

Sales and Service Of Iicc. ”

Note 64. available from any

Calibration will be perfomed in the AN/TSM-55V5 Maintenance

the label of

to be

Factor and Effective

Calibration

power incident upon

Pdc Substituted

~vat,e Incident

the mount due to mis-

39) are taken

line determines

made with

Factor and

between

Factor is

and 3) dc -

Calibration

line.

region

Calibration Equiptment Shelter.

The

EFFECTIVE

35.

is the ratio of s~!l)stitlitcd, al]c[io or dc potver in a thern~ istor mount to the microwave RFpo\ver dissipated \vith in the mount.

Effec(iv(~ Efficiency

36. Et’t’cctivc Ef’fidicncv corrects in parts of the mount othel’ than the detection thermis tor elements and error in the the!’mister

applied as a correction ma(ch (he thermistor RF source. In this case. all of ,the RF power inc’idcnt upon the mount is absorbed power is absorbed in the mount. measurement tainty due to mount SWR is eliminated: in the tuner must

37. CALIBRATION

.38. When the 478A is used with the Model 43 I or 432

Power Meters, Calibration ciency corrections switch.

pensates for the Calibration

ciency in the 478A, If the 478A is used with a power meter other than the 431 or 432, Calibration Effective Efficiency corrections ing the measured Effective Efficiency value respectively.

39. THERMOELECTRIC

40. ” Mount calibration include inaccuracies error. Effective Efficiency uncertainty tained on the three lowest power ranges of the Model 431 series Power Meters by correcting urement error introduced error correction

41. A mild thermocouple

tact where the connecting wires join to the thermistor

elements. Thus, two thermocouple

polarity are formed, one. at each junction to each thernl -

istor element.

42. Ideally, each thermocouple in magnitude so that they cancel with no resultanl effect on the accuracy however, each point of contact does not have identical thermocouple peratures differences thermoelectric causes a thcrmoclcctric of the error is important when making dc suhstitut iotl measurements ranges with one of the Model 431 series Power Meters. On other ranges, the cf’feet 1s negligible. error introducec[ by thermoelectric

IJW

With the proper setting; the 431 or 432 com -

Calibration

and is typically

EFFICIENCY.

clc

-to-microwave mount, Effective Efficiency is

factor when a tuner is used to

mount io the transmission

considered.

DATA APPLICATIOX.

can be made by setting a front panel

power by the Calibration

uncertainties

caused by thermoelectric

Factor uncertainty

procedure

Each thermocouple

characteristics,

each junction may not be the same. These

cause an incomplete

voltages.

power measurement.

the O. 1 nlW. 0, 03 mw’ and

O, 1 MW on

Effective El ficicn(y

Pdc Substituted

,~wave Dissipa~crt

for po!ver absorbed

power substitution

the mount.

ho!vever, losses

Factor or Effective Effi-

can be made by divid-

EFFECT.

given in Table

thermoelectric

given in Paragraph

exists at each point of con-

voltages of opposite relative

and in adcfi tion, the tem -

resultin~

effect error.

the O. 01 mW range.

+2. 5[~ can be main-

for the meas-

creates a dc voltage.

voltage would be equal

cancellation

in a

voltage (hat

The magnitude

effect is

line or

Siocc all

uncer -

Factor or

effect

=1. 52 and

effect. An

44,.

In practice

O. 01

Maximum

about O. 3

thr

8-5

Model 478A

THFRMOEI

43. _~.—–-. TION FOR 478A 431_COIvf BINATION.

44. Use the following technique to correct for thermo-

electric effect error.

Measure power.

b. Connect a HP Model 8402 Power Meter Calibra-

tor to the power meter DC CALIBRATION

STITLTTION connector.

Zero and null power meter.

d. Bydc substitution

ual), duplicate power measurement

Calculate and record substituted

Reverse connection polarity between the calibra-

tor and power meter.

f. Re-zero and re-null power meter, if necessary.

Bydc substitution,

made instep a. Calculate and record substituted

as P2.

h. Calculate arithmetic

powers Pl and P2.

rection for thermoelectric

45. THERMOELECTRIC BINATION.

46. The thermoelectric

minimized is negligible compared with the dc voltage used to bias the thermistor

47. CIRCUIT DESCRIPTION.

48. Two matched series thermistors

common thermal conducting block, represented

shaded rectangle in Figure 5. One pair, marked “D’ for detection, is mounted between the end of a coaxial cable and cylindrical exposed to incoming RF power which heats them, lowering their resistance. for compensation cavity, is completely attached to the 431 Po\ver Meter, the detection thermistors are part of {he metering circuit.

ECTRIC l<: F_FL~T_E~ROR

?-–.

(refer toprocedurein

duplicate lower measurement

mean of the two substitution

This mean power includes a cor-

effect error.

Power

ERROR FOR 478A ‘432 COM -

the 432 since the thermoelectric

bridges.

OPERATING

errors present in the 431 are

PRINCIPLES

cavity. These thermistors

The other pair, marked, “C”

and situated immediately

shielded from RF. With the 478A

made in step a.

power as P1.

2“

are mounted on a

CORREC-

AND S~B-

431 Man-

power

voltage

outside the

50. During 431 478A operation,

dc and 10 kHz bias currents are supplied from the 431

Power Meter to heat the thermistors tances are reduced to approximately

pair.

Capacitor Cl offers high impedance to 10 kHz,

but is practically

appear series connected to 10 kHz, but parallel con-

nected

to’

bridge of the 431 Power Meter as a 2000 resistance, but terminates blocks any dc and ‘audio power that may be present in the incoming signal, and passes only RF power.

51. During 432 operation

amounts of dc current are supplied from 432 Power

Meter to heat the thermistors are reduced to approximately Capacitor Cl is practically “D’ to appear series connected to the dc bridge, parallel connected to RF. In this manner, “D’ appears to the dc bridge in the 432 Power Meter as a 2000 resistance that terminates Capacitor C2 blocks any dc and audio power that may be present in the incoming signal and passes only RF power.

52. 431 POWER METER DETECTION.

53. Under normal operation, to heat thermistor

1) RF signal, 2) 10 kHz,bias, 3) heat from the environment. The total power supplied to heat thermistor “C” consists of: kHz bias, and 3) heat from the same environment. “D’ and “C” are matched thermally, of heat applied to reduce their series resistance must be equal.

54. 432 POWER DETECTION.

55. Under normal operation the total power applied to heat thermistor

1) RF total power supplied to heat thermistor of: As “D’ and “C” are matched thermally. the total amounts

the

are

of heat applied to reduce their series resistance must be equal.

56. MECHANICAL

57. The Model 478A is a precision dropping or other mechanical destroy the match between the thermistors.

RF. In this manner, “D’ appears to the audio

signal and 2) heat from the environment.

1) dc

bias and 2) heat from the samd environment.

short to RF. This causes “D” to

the coaxial cable in 500. Capacitor C2

pair “D” (see Figure 5) consists of

1) dc

bias, 2) an equal amount of 10

pair “D” (see Figure 6). consists of:

MAINTENANCE

SHOCK.

sufficient amounts of

until their resis-

200$2 per series

(see Figure 6) sufficient

until their resistances

200$2 per series pair.

short to RF. This causes

the coaxial cable into 50!2.

the total power supplied

the total amounts

instrument.

shocks. Such shocks can

“C” consists

equally

pair

The

Avoid

49. With the 478A attached to the 432 Power Meter the detection thermistors compensation bridge.

same thermal environment,

which affects th[, RF bridge simultaneously

metering bridge : this allows tht, power mctrr t,ircuil to compensate imize drift.

Since the two pairs of thermistors

for chall~rs in temperat urr and thus m in-

thermistors

are part of the RF bridge and the

are part of the compensation

any chan~e in temperature

s!]ow the

affr?cts the

8-6

58. CHECK ON THERMISTOR

59. Match between the thermistors

comparin~ the thermistor operating conditions. in Figure 6. rear of the thermistor

6. Note that the small lyattery in series with tl]e IiP

Model 3440 Digital Voltmeter is connected in opposition

Make connections

MATCH.

resistances

Equipment required is indicated

mount: pins are show’n in Fi~ure

may be checked by

under simulated

the (,onncrtor at the

Model 478A

Figure 6.

istor Mount when Connected to a 432 Power Meter

Schematic Diagram of a Model 478A Therm-

WARNING

Under no conditions required to carry a current higher than 14

mA.

should the mount be

to tile

powT’1”

should be such volt is obtained. Take readinxs with sfcit(h to pin 1 and then to pin 3, factory if Ihe two readings do not differ by more than O.

030 volt. Nonoperating

the succeeding paragraphs.

60, REPAIR.

61. Exceeding the cw or pulse power limit of the Model 478A Thermistor

the

mount \rill no Ionser zero on the ~Iod~l 431 Or 432

Po\ver Meter.

62. Before adjustin% the mount in ony way. make sure [hat themount is the cause of the problem. An open or short indication.

64. means that the mount is not reparable cedures outlined in the follow ins paragraphs. the mount may be nonoperative Test for this by using the procedures or by connecting the mount to a Model 431 or 432 Power Meter and a cable which is known to be good. A faulty cable will not have continuity through the respective connector pins or may have poor contact in the mount connector. or a great deal of noise (visible on the 431 or 432 Meter) when the cable is gently flexed near the connector end.

supply.

tkiat

150 vIJ1l can probably be repaired as ou[lined in

Poor contact will show as an intermittanc

The following procedures the 431 478A combination.

cedures can be used for the 432 except_for the ZERO ‘VERMER trols on the431 are replaced by the COARSE

ZERO and FINE ZERO control on the 432.

The value of this buckins vollnuc

voltmeter resolution

Thermistor

mounts with readings as high

Llount may result in dama~e such that

using the checks in Para~raphs

Note

control. These con-

d{nvn to 0.001

cunne[tcd

[cl) is satis-

but still repairable.

are set down for

The same pro-

However.

Paragraph

the pro-

58.

Figure 7.

Check on Model 478.4 Thermistor

ante Match

Resist-

63. The major difference 478A 432 combination does not use 10 kHz as a biasing factor in the thermi-

stor. All biasing factors in the 432 are from dc sources therefore,

64, To troubleshoot lows:

65. If meter remains pegged upscale. the thermistor elements have been damaged. However. it may be PO Ssible to recompcnsate 68 and 69 and return the mount to operation: otherwise they must be rcplaeed. Efficiency and Calibration are no longer valid (see Paragraph

lowering the thermoelectric

a. Connect mount to Model 431.

b, Set:

Rotate ZERO from one limit to the other.

MOUNT RES . . . . . . . .

RANGE . . .

POWER . . . . . . . . . . . . . . . ..ON

between the 478A 431 and

that the 478A 432 combination

effect.

damaged mount, proceed as fol-

per Paragraphs

77).

..2000hm

..1O mW

. . . . . . . . . .

lhe thermistors

In either case. the Effective

Factor chata on the nameplate

8-7

Figure 8.

Model 478A

d. When meter pointer rises .trim [o zerowith each

adjus[ing scre\v.

Replace cover and three screws (A). The in-

strument is now operative.

Note

Make sure the three screw’s in the body of

the thermistor mountis put Cogether; this insures quiet operation.

70. If meter is pegged upscale:

a. Set ZERO and VERNIER to mid-range.

b. Set RANGE to highest position which will not peg

the meter.

Turn one of the screws (B) counterclockwise

obtain a meter reading half that observed in step b.

mount are tight \vhen the

66. If meter remains pegged downscale, sistance between pins 1 and 2, and pins resistance

An open or shorted reading indicates the need for replacement of the thermistors.

67. If the resistance

be possible to recompensate

service.

higher because of the damage to the thermistors, it will be possible to zero the meter and to make measurements.

Factor indicated on the label will no longer be valid (see Paragraph inside the instrument

within limits. Most instruments

7663 do not have the adjusting screws at the time of manufacture, sent

68.

69.

should measure between 1000 and 5000 ohms.

reading is satisfactory,

The drift with temperiiture

The Effective Efficiency

77). There are two adjusting screws,

in for repair after March 1964.

Refer to Figure

Remove the three screws (A).

Slide instrument

Plug cover into Model 431.

Set:

If meter ispegged downscale:

Set RANGE to 10mW.

Set ZERO and VERNIER to mid-range.

Turn screws (B) clockwise,

but are modified if the instrument

MOI’NTRES

POWER . . . . . . . . . . . . . . .

the mount and return it to

which permit recompensation

with serials lower than

and proceed as follows:

out of its co,ver.

. . . . . . . . .

measure re

changes will be

and Calibration

1 8

turn alternately.

and 4. The

may

was

..2OO ohm

. .

but

d. Turn the other screw (B) counterclockwise the meter. place the thermistors

ment is now operative.

71. THERMISTOR

72. The procedure thermistor replacing

Table 3.

If it is impossible

Replace cover and three screws (A). The instru-

CEDURE.

After replacement

sembly, the Effective Efficiency and Calibration Factor indicated on the label of the mount are no longer valid (see Paragraph

77).

assembly,

them with pretested

Parts Furnished

Replacement

(Paragraph

ASSEMBLY REPLACEMENT

consists of removing the damaged

the printed circuit assembly and

zero the meter, re-

71).

Note

the thermistor

assemblies

Thermistor

Kit. HP 00478-600

as-

included in

Assembly

zero

PRO-

CAL TION

If there is a sudden jump in meter indication when advancing either screw, back off

turn, and donot advance that screw further, Check resistanreas If either screw bottoms, do not apply force. Thermistor indicated.

replacement

(Paragraph

Para~raph

8-8

71) is

66.

Model. 478A

73. The rcplzcemcnt

factory. Rowever. tormount depends un proper ins(allatiol> uf [he ~ssmnbly. it may be desirable c-icncy following replacement. checked by romparing

SW? is cheekedat apln”oximately

1.5 nr less.

In the field,

sembly connection of the Type Nrenter bellows, If Me bellows does no[ col;tart the

center conductor.

10 GHz.

slight ly with a pair of tweezers,

74. The }ollowing special tools may be required for the completion of this procvxlure:

a. One small screwdriver.

removing a 00-90 x

b. One pair of tweezers.

asscmhlie$

since the operation 0! the thermis -

against a knmm mount.

(XIZ and 10 GHz. SiVR shu.tld hc

equal at

replaceable

concfuu I r is made bya

SV”R wdl he abcwt 2,0 at

The beilolrs ma}- be L?nyhened

1 8

scretv.

m-c utc[cstcd

check the S\VR and cffi -

The efficiency may IN

and 10 Ghz. Jnd ShOUId be

!!k’rnlis.~or

(IIC RF

thermistors

070 lip. suitable for

as-

the

The

75. REMO\’AL

~ Remove throc 2-56 Y

i]ml shield [Figure 9).

Do not break \vircs connecting printed circuit assembly to receptacle

b. Looscm lo$knot and remove

from thermistor

c .“

Disconnec{ the three wires beti(-eeo the printed

circuit assembly and the receptacle

printed circuit assembly.

d. In early thermistor

x 1

screw used to ccmncct the RF Thermistors Type N center conductor. Remove this, scretv. if present. usia~ small screwdriver

Remove the three 2-56 x

printed circuit and thermistor connector assembly.

f. Remove printed circuit and thermistor

blles.

g. Remove the three insulator bushings from tbernl istor assembly. damaged assembly.

PROCI?DLRE.

assembly.

This completes

3 16

hlove terminal shiclcf aside.

CAL’TION

scrc!t-s holding tcrm-

conne(tor.

connector from the

assemblies

and tweezers.

5 8

inch scre~vs holding

assemblies

the removal of the

16-32 setscrcit

there is a 00-90

assem-

the RF

the

Figure 9.

Model 478A Thermistor Mount Assembly

8-9

Model 478A

Pass the rcd !virc from the [hcrn)is[ur

throu<h the hole indicated in Figure 10. Do not con-

ncc( to printed circuit assembly at this time.

assembly

Figure 10.

76. INSTALLATION

a. Referring

from receptacle

For strain relief ,the wires should go through the holes indicated and connect from the bottom of the printed circuit assembly.

Install the three insulator bushings in the therm-

istor

assembly.

HP Model 478A Printed Circuit Assy

tViring

PROCEDURE.

Figure 10. connect the three wires

connector to printed circuit assembly.

Note

d. Mount thermistor

on RF coi]nector assembly.

s~re’~sY:d firmly to]nsure

N center conductor.

sembly to printed circuit assembly.

f. Connect thermistor

Check for proper null and zero.

g. If desired, check SWR and efficiency. The h!ount SWR has been adjusted at the factory to be about equal at

is made with the a locknut. SWR is being recalibrated. by comparing to a known good mount.

h. When any testing or recalibration secure terminal shield with three 2-56 x screws,

77. RECALIBRATION. is desired. the instrument for repair and recalibration. Sales and Service Office will arrange for such repair.

10ck’’’’ashers”

Printed circuit assembly must be positioned so it does not cover cornpensa{in:

Connect red and !vhite wires from thermistor

GHz and 10 GHz and less than 1.5. The adjustment

The setscrew should not be moved unless

To prevent pulling wires out of terminal connector,

2-56 x3 16 inch screw while making checks.

This completes

and printed circuit assemblies

Lse three 2-56 x

proper bellows contact with the Type

16-23 setscrew which is secured by

secure terminal shield with one

Screws must be tightened

Note

mount to a HP Model 431.

Efficiency may be checked

CAUTION

the Installation

recalibration

may be sent to the factory

Any He\vlett - Packard

screivs.

Procedure.

5 8

completed.

3 16

the mount

inch

as-

inch

8-10

APPENDIX A

MAKE ALL CORRECTIONS INSTRUMENT SERIAL PREFIX

NEW ITEM.

SERIAL PREF[x OR NUMSER

812-00201

840

] 843

CHANGE

CHANGE 3

above

MANUAL CHANGES

BACKDATING

MODEL 432A

POWER METER

Manual Serial Prefixed:

THIS MANUAL ACCORDING TO ERRATA BELOW, THEN CHECK THE FOLLOWING TABLE FOR YOUR

DIGITS) OR SERIAL NUMBER

MAKE MANUAL CHANGES

Change 1, 4

Change 1, 2, 4

I Change

Change A2R61 and A2R62 to R: FXD 215K OHM 0698-3454

Change A2R36 to R:FXD lM OHM 0683-1055

Change A2C24 to C: FXD 270 PF 0140-0210

Add A2C48 from A3Q38 base to ground. C: FXD 68 PF 0490-0192

Add A1R3 between Al pin 11 and +7 Vdc. R: FXD

Delete A1R43.

Add A2C49 between A2 pin 15 and junction of A2R59 and A2R57.

C: FXD 2.2 ~f 0180-0197

Add A2R29 between ~ and the bottom of A2c31.

R: FXD 68.1$2 0757-0397

2,3,4

812- Manual Printed: August 1968

DIGITS) AND MAKE ANY LISTED CHANGE(S)

SERIAL

PREFIX OR

NUM6ER

1.6K 0698-3160

THE MANUAL.

MAKE MANUAL CHANGES

CHANGE 4

Figure Al-1, Al-2, Al-3 and Table AlMeters with serial prefix 843 and below.

and Al-2 apply to 432A Power

A1-1

Appendix 1

Model

432A

Figure A1-1

A1-2

Figure A1-2.

Reference

Desigmtion

!42

A2C 1

A2C2

A2C3

A2C4

AZC5 A2C6A2C20

A2C21

A2C2Z A2C23 A2C24 A2C25

A2C26 A2C27 A2C28 A2C29 A2C 30

A2C31 A2C32 AZC33 A2C

A2C35

A2C36 A2C37 A2C38 A2C39 A2C40

A2C41 kzc42 0180–0106 A2C43 A2C44 A2C45

A2C46 A2C47

AZC4a

A2C49

A2CRI

AZCR Z A2CR3 A2CR4 A2CR5

@ Part No.

00432–6002

00432- 200Z

0180-1819

0180-0229

0160–2917

016@2917

0140-0234 0140-0234 0180-1746 0140-0198 0160-0978

0160–2930

0160-2930 0180-2176

0160-2930

0180-1940 0160-2930 0180-0197 0160–267.? 01s0-0197

0160-2917 0160-2143 0160-2917 0160-2265 0180–02L9

0160–2917

0180-0197 0180-0291 0180-0106

0150-0059 0160-2930

0180-0197

1901-0026

1901-0026 1901-0026 1901–0026

Table A1-1. Reference Designation Index

Description #

BOARD

ASSY:LOGIC

LWJARD:

C:FXD ELECT 100

C:FXD ELECT 33 C.:FXD C:FXD FACTORY SELECTEO PART L:FXD FdlT ASSIGNED NOT

L:FXD MICA 500 C:FXD MICA 500 C:FXD ELECT 15 C:FXO MICA 200 C:FXO MICA 1500

C.:FXD NOT C:FXO C:FXD ELECT 220 C:FXD

C:FXO ELECT 33 C:FXD C:FXO ELECT 2.2

C:FXD MY 0.047

C:FXD ELECT 2.2

L:FXD C:FXD L:FXO

G:FXU

C:FXD ELECT 33

L:FXD C:FXCI ELECT 60 C:FXD ELECT 2.2 C:FXD ELECT 1.0 C:FXD ELECT 60

CzFXO L:FXD N(JT C:FXD ELECT 2.2

DIODE:SILICON

DIODE:SILICON DIODE:SILICON

I)1ODE:SILICON NOT

BLANK

CER CER

CER

ASSIGNED

CER

ASSIGNED

CER

CER CER CER

CER 22 PF 5%

CER

ASSIGNED

0.05

PF 1%

UF 10% PF 5%

0.01

UF 5% 80VDCW

UF 10%

0.05

2000

0.05

UF 10% 10VDCW

0.05

UF UF

3.3-0.25

0.01

0.75A 200 PIV

+75-1OZ 50VDCW

10% 10VDCH

+80–20% 100VDCW +80–20%

+80-20% 100VDCW

PF 1%

UF 10%

20VDCW

500VDCkl

+80–20% 100VDCW

+80-20% 100VDCW

20%

SVDCW

+80-20% 100VDCW

10%

15VDCW

+80–20% 100VDCW

10%

ZOVDCW

20VDCW

+S0–20% 100VDCW

+80-20% 1000VDCW

+80-20% 100VDCW

500VDCW

+80-20% 100VDCW 20% 6VDCH

20VDCW

35VDCW

20%

6VDCW

500VDCW

+80–20% 100VDCW

10X

20VOCW

IOOVDCW

Appendix 1

Note

# See introduction to

section VI for ordering information

A1-5

Appendix 1

Reference

Designation

@ Part No.

Table Al-1. Reference Designation Index (Cont’d)

Description #

—

Note

A2CR6 A2CR7 A2CR A2CR’3 A2CR1O

A2CR11 A2CR12 A2CR13 A2CR14 A2CR15

A2CR A2CR17 A2CR18

A2Q

A2Q2 A2Q3 A2Q4 A2Q5 AZ Q6

A2Q7 A2Q8 A2Q9 A2Q1O A2Q11 A2fJ12– A2C119

A2(,/2C A2Q21 A2Q22 A2Q23 A2Q24

A2Q25

A2Q26 A2Q27 A2Q28

A2Q29 A2Q3C

A2Q31 A2Q32 A2Q33

A2Q34 A2Q35

A2G36 A2Q37 A2Q38 A2Q39 A2Q4C

1902-0033 1901-0040

1901–0026

1901-0040 1901-0040

190 1–0040 1901–0040 1901-0040

1901-0040 1901-0040 1901-0040

1854–0071

1854–006z

1854-0071 1853-0012 1853-0020 1853–0020

1853–0020 1854-0071 1854-0003 1853–0001 1854-0071

1853–OOLO 1854-0005 1854-0071 1854-0071 1854-0005

1854-0071 1854-0005 1854–0071 1854-0071 1854-0071

1853–0020 1854-0071 1853-00.20 1854-0071 1854–0071

1853–001> 1853–0020 1854-0071 1854–0071 1854-0071

DIOOE BREAKOOWN:6.2V OIODE:SILICON OIODE:SILICON N(JT

ASSIGNEO

NUT

ASSiGNED

D10DE:51LIcoN

DIOOE:SILICON

DIOOE:SILICON OIOOE:SILICON

DIOOE:SILICON

OIOOE:SILICON

OIOOE:SILICON OIUOE:SILICON

TRANSISTOR: SILICON

TRANSISTOR:SILICON TRANSISTOR: SILICON TRANSISTOR:PNP TRANSISTOR: SILICON TRANSISTOR:SILICON

TRANSISTOR:SILICON TRANSISTOR:SILICON TRANSISTOR:NPN TRANSISTOR:PNP TRANSISTOR:SILICON

NUT

ASSIGNEO

NOT

ASSIGNEO

TtiANSISTOR: SILICON TRANSISTOR:SILICON TRANSISTOR:SILICON

TRANSISTLIR: SILICON TRANSISTOR: SILICON NUT

ASSIGNEO

TRANSISTOR:SILICON

TRANSISTOR:SILICON TRANSISTOR: SILICON TRANSISTDR:SILICON

TRANSISTOR:SILICON

TRANSISTOR: SILICON

TRANSISTOR:SILICON

TRANSISTOR:SILICON TRANSISTOR:SILICON

TKANSISTOR:SILICON

TRANSISTOR:SILICON

30MA

0.75A 200 PIV

30MA

30MA 30WV 30MA 30WV 30MA 30WV

30MA 30WV

30MA 30MA

30WV

30WV 30WV

NPN

2N1701

NPN

SILICON 2N2904A

PNP

NPN

SILICON SILICON 30V 900MW

NPN

PNP

NPN

2N708

NPN

2N708

NPN NPN

2N708

NPN

PNP NPN

PNP NPN NPN

PNP

2N3640

PNP NPN NPN NPN

A1-6

# See introduction to section VI for ordering information

Reference

Designation

@ Part No.

Table A1-1. Reference Designation Index (Cont’d)

Description #

Appendix 1

Note

A2Q41 A2Q42

A2Q43

A2Q44

A2R1

A2R2 A2R3 A2R4 AZR5 A2R6

A2R7

A2R8 A2i79 A2R

AZR A2R A2R13

A2R

A2R15

A2R16

A2R17 A2Rle A2R19 A2R20

A2R21 A2R22 A2R23 A2R24

A2R25

A2R26 A2R27 A2R28 A2R2~– A2R31

&2R32 i2ft33 &2R34 42R35 42R36

h2R37 42R38 ii2R t2R40 h2R41

12R42 i2R43 k2R44 k2R45

1853–OOZO 1853-0020 1854-0071 1854-0071

0757–C279

0683–0685

0757-0s35

0698-3156 2100-1773

0757-02$9

0757-C280 0698-3160

11 12

0698-3441

0757-0465 0757–0442 0698-3136 0757-0346

0757–0442

0757-C279 R:FXD MET

0757–0198 0698-3401

0698-3156 0757-044L 0757-0442 0698–32b0

0698–326LI

0757-0442

0698–3156

0757–0199 0757–0442 0757-046> 0698–3454 0757–0461

075?–0470 0?57-0442 069S-3155 0698-3155 0757–0465

0757-0461 0757-1094 0757-0461 0757-0465

TRANSISTOR:SILICDN TRANSISTOR: SILICON TRANSISTOR:SILICON

TRANSISTOR: SILICON

R:FXO

MET FLM

R:FXO

COUP

R:FXD NCJT ASSIGNEO it:FXD R:VAR WW II( OHM

R:FXO

R:FXD

R:FXD R:FXD FACTORY SELECTED

i_i:FXO MET FLM R:FXD R:FXO R:FXD

FACTORY SELECTEO

R:FXD

MET FLM

K:FXD

MET FLM

k:FXO

MET FLM

NUT ASSIGNEO NUT ASSIGNED

R:FXLI

MET FLM

R:FXO

MET FLM

R:FXO R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXO

MET FLM

NOT

ASSIGNED

NOT

ASSIGNEO

k:FXD

MET FLM

R:FXO

MET FLM

K:FXO

MET FLM LOOK OHM 1%

17:FX0

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXD

MET

R:FXO

MET FLM

R:FXO

MET FLM

lt:FXO

MET FLM

R:FXO

MET FLM

R:FXO

MET FLM

6.8 OHM

MET FLM

MET FLM MET FLM IK MET FLM MET FLM

MET FLM MET FLM MET FLM 10

FLM

MET FLM

FLH 4.64K

PNP

NPN

3.16K OHM 1% l/8W

6.8LK OHM lZ I/.2w

14.7K

10%

13.3K

31.6K 215 OHM 1% l/8W

100K OHM 1X l/8W

10.OK

17.8K

10.OK OHM 1% l/8W

3.16K 10G 215

14.7K

10.OK

464K OHM 1% l/SW

464K

10.OK

14.7K

21.5K

10.OK

215K

68.lK

L62K

10.OK

4.64K

100K

68.LK

1.47K

68.lK

100K

l/4N

OHM 1%

LIN l/2W

OHM 1%

OHM 1% l/8W

OHM 1%

PART

OHM 1%

OHM 1% l/8W

PART

OHM 1%

OHM 1% OHM 1%

OHM 1%

OHM 1% OHM 1%

OHM lx

OHM 1X

OHM 1%

OHM 1% OHM 1% OHM 1%

OHM 1%

OHM 1% OHM 1% OHM 1%

OHM 1%

l/2W l/2W

l/8W

L/8W

l/8W

l/8W l/8W

l/8W

l/8W l/EW

l/8W

l/8W l/8W 1/8bJ

l/8W l/8W

l/8W

# See introduction to

section VI for ordering information

A1-7

Appendix 1

Reference

Designation

A2R46

A2R47

A2R48 A2R49 A2R50

A2R5 1 A2R52 A2R53 A2R54

A2R55

A2R56 A2R57 A2R58

A2R59 A2R60 A2R61 A2R62 A2R63

A2R64

A2R65

A2R66

A2R67 A2R68

A2R69 A2R70 A2R71

A2R12

A2R73

A2R74 A2R75 A2R76 A2R77 A2R78

A2R79 A2R80 A2R81

A2R82

A2R83 A2R84

@ Part No.

0757-0465

0757-0461 0757-0465 0757-0461 0757-0280

0698–3260 0757-0279 0698–31b0 0698-3428

0698–3160

0698–3260 0757-0442 0698-3260

0698–3260 0698–0084 0698-3260 0698-3260 0698-3260

0757-0439 0757-0442 0757–0461 0698-3160 0757–0442

0698–3436 0698-3156 0698–3160 0698-3444 0757-0199

2100-1769

0698-4466

0757-0346 0698-3160

0811–2277

0811-2277 0811-2537 0757-0465

0757-0401

0698-3441 0757–0.?60

0360-0124

Table A1-1. Reference Designation Index (Cont’d)

Description #

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

R:FXD

MET FLM

K:FXD

MET FLM LK

R:FXD

MET FLM

K:FXD

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

FACTORY SELECTEO

R:FXO

MET FLM

FACTORY SELECTEO

R:FXO

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

K:FXO

MET FLM

ii:FXO

MET FLM

R:FXO

MET FLM

R:FXO

MET FLM

k:FXO

MET FLM

R:FXO

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXO

MET FLM

K:FXO

MET FLM

R:FXO

MET FLM

K:FXO

MET FLM

K:FXO

MET FLM

R:VAR MW 50 OHM lC% LIN l/2W K:FXO

MET FLM

R:FXD

MET FLM 10 OHM 1%

R:FXD

MET FLM

R:FXO WW 10K OHM 0.1% l/40W

K:FXO WW 10K OHM 0.1% l/40W R:FXO WW R:FXD

MET FLM

FACTORY SELECTEO

R:FXD

MET FLM

K:FXO

MET FLM

R:FXO

MET FLM lK

TERMINAL:SOLOER

100K OHM 1% l/8H

68.lK OHM 1% l/8W 100K

68.lK OHM 1% l/8M OHM

464K

3.16K OHM 1% l/8W

31.6K

14.7

PART

31.6K OHM 1%

PART

464K

10.OK

464K OHM 1%

464K

2.15K OHM i% l/8W 464K OHM 1% l/8W

464K

464K OHM 1% l/8W

6.81K

10.OK

68.lK

31.6K OHM 1% l/8w

10.OK

147 OHM 1% l/8W

14.7K

31.6K

316 OHM 1% l/8W

21.5K OHM 1% l/8W

976

OHM 1%

31.6K

OHM 0.1% l/4W

100K OHM 1% l/8W

PART

100

UHM 1X

215 OHM

OHM 1% l/8W

LUG

OHM 1%

OHM

OHM 1%

OHM 1% OHM 1% OHM 1%

OHM 1%

OHM 1% OHM 1%

OHM 1%

l/8W

/8W

l/8W

/8W

l/8W

/8W

l/8W l/8W

l/8W

l/8W l/8W

Note

A1-8

# See introduction to

section VI for ordering information

Appendix 1

@ Part No.

0140-0198

0140-0234 0150-0059 0160–0978 0160-2143

0160-2265 0160-2672 0160-2917 0160–2930 0180-0106

0180-0197

0180-0229

0180-0291

0180-1746

0180-1819

0180-1940

0180-2178 0360-0124 0683-0685

0698-0084

0698-3136

0698-3155 0696-3156

0698-3160 0698-3260

0698-3401 0698-3428 0698-3438 0698-3441 0698-3444

0698-3454 0698-4466 0757-0198 0757-0199 0757-0279

0757-0280 0757-0289 0757-0346 0757-0401 0757-0439

0757-0442 0757-L1461 0757-0465 0757-0470 0757-0835

0757-1094 0811-2277 0811-2537 1853-0001 1853-C012

1853-0015 1853-0020

1854-0003

1854-0005

Table A1-2.

Description #

C:FXD MICA 200 C:FXD MILA C:FXD

CER

C:FXO MICA 1500 PF C:FXD

CER

C:FXD (.kK C:FXD MY 0.047 C:FXO

CER

C:FXO

LER

C:FXD ELE(,T 60

C:FXO ELELT 2.2 UF

C:FXD ELECT 33

C:FXD ELECT 1.0 C:FXO ELECT 15 C:FXD ELECT

C:FXD

ELECT 33 UF 10% 15VDCW

C:FXD ELECT 220 UF TERMINAL:SULDER R:FXO C.CJMP 6.8 R:FXO

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXD

MET FLM

R:FXO

MET FLt4

R:FXD

MET ELM

R:FXD

MET FLM

R:FXO

MET FLM

R:FXO

MET

R:FXD MiT FLM 316

R:FXD

MET FLM

R:FXO

MET

R:FXO

MET FLFI

R:FXD

MET

R:FXO

MET FLM

R:FXO

MET

R:FXD

MET

R:FXD

BET

R:FXO

MET FLM

R:FXO

MET FL#l

R:FXO

MET FLM

R:FXD

MET FLM

R:FXO

MET

R:FXD

MET

R:FXD

M&T FLM

R:FXD t4tT fLM 1.47K

R:FXO WW 10K R:FXD HW 5K TRANSISTOR:PNP TRANSISTllR:PNP

TRANSISTCIR:SILICON TRANSISTOR:SILICON TRANS15TOR:NPN SILICON TRANSISTOR:SILICON

PF 5%

501J PF

3.3–0.25

2uO0

2.2 PF b% UF 5%

0.05

0.01

UF .20% 6VOCW

UF 10% 10VDCW

UF 10% 35VDCW

UF 10% 20VOCW

1O(J UF

LUG

UHM 5%

2.15K OHM

17.8K

4.64K OHM

14.7K

31.6K

464K

215 C)HM 1% l/2W

14.7 147

FLH 215

FLM 976

FLH 21.5K

FAR lK FL!! 13.3K FLU 10

FLH 100K FLII 16ZK

OHM 1% OHM 1% OHM 1%

Z15K

OHM 1%

10U

OHM 1%

3.16K

OHM 1%

100

OHM 1%

6.81K OHM

10.OK

68.lK

6.81K

OHM

0.1% 1{40W

OHM

0.1% l/4W SILICON 30V 900MH SILICON 2N2904A

PF 1X

+80-20% 1000VDCW

+80-20% 100VDCM

+80–20% 100VDCW

10% 20VOCW

20% 8VC)CW

OHM 1%

OHM 1% OHM 1%

PNP PNP

NPN

Replaceable Parts

500VDCH

500VDCW

500VOCW

80VDCH

+75–10%

OHM 1%

OHM 1% OHM 1%

OHM 1%

OHM 1% OHM 1%

OHM 1%

50VOCW

l/4W

l/8W

l/8H

l/8W l/8W

l/8W

l/8H

l/8W l/8W l/8H

l/8W l/8W l/2W

I18W l/8W

l/8W

l/8W 28480

lf8W 28480

l/8W

l/811

l/8W

l/8W 28480 l/8W l/8W

l/2U

l/8W

2N3640

2N708

Mfr.

28480 28480 72982 301-000–COJO-339C 28480 91418

72982 28480 84411 91418

28480

28480 28480

56289

56289 28480 01121 28480

28480 28480 28480 28480 28480

28480 0698-3401 28480 28480 28480 28480

28480 28480 28480 28480 28480

28480

28480 0757-0401 28480

28480

28480 28480 28480

28480 28480 28480 28480 1853-0001 04713

8480

8480 1853-0020

8480 1

2735 2M708

Mfr. Part No.

0140-0198 0140-0234

0160-0938

TYPE B

301-NPO–ZZPF 0160–2672 TYPE

1A TA 5 0180-0106

0180-0197 0180-0229 0180-0291 0180-1746 0180-1819

109C)336X9O15C2-OYP 109OZ27XOOO6F2-DYP 0360-0124 CB68G5 0698–0084

0698-3136 0698-3155 0698-3156 0698-3160 0698-3260

0698-3428

0698-3438 0698-3441

0698-3444

0698-3454 0698-4466 0757-0198 0757-0199 0757-0279

0757-0280 0757-0289 0757–0346

0757-0439

0757-0442 0757–0461 0757-0465 0757-0470 0757-0835

0757-1094 0811-2277 0811-2537

2N2904A

1853-0015

854-0003

1 2 1 1 1

1 1

4 z 1

1 1

1 2 4 6 9

1 z

1 1 2 3

3 1 2

1 1

7 1 1

1 1 1

# See introduction to

section VI for ordering information

A1-9

Appendix 1

@ Part No.

854- C062 854–0071 901-C026

901–0040

902-C033

100-1769

100-1773

0432–2002 0432–6002

Table A1-2.

TRANSISTOR: SILICCIN

TRANSISTOR: SILICON

OIOOE:SILICON

OIODE:SILICLJN

OIOOE BRtAKDUkdN:6.2V

R:VAI? WW 50

R:VAR Wii lK

BOARO:LILANK

BOARO

ASSY:LUGI(.

0.75A 200 PIV

3(JMA

OHM 10.%

UHM 10!Z

Replaceable Parts

Description #

NPN

2N1701

NPN

30klV

LIN l/2H

LIN l/2W

(Cont’d)

Mfr.

02735 28480 28480 28480 1901-0040 04713

28480 2100-1769

28480 28480 28480

Mfr. Part No.

2N1701 1854-0071

1901–0026

1N823

2100–1773 00432-2002 00432-6002

5 9

1 1 1

A1-10

# See introduction to

section VI for ordering information

APPENDIX A

MANUAL CHANGES

MODEL 432A

POWER METER

Manual Serial Prefixed: 914

MAKE ALL CORRECTIONS IN THIS MANUAL ACCORDING TO ERRATA BELOW, THEN CHECK THE FOLLOWING TABLE FOR YOUR

INSTRUMENT SERIAL PREFIX (3 DIGITS) OR SERIAL NUMBER (8 DIGITS) AND MAKE ANY LISTED CHANGE IS) IN THE MANUEL

NEW ITEM.

SERIAL PREFIX OR NUMBER

904, 919

MAKE MANUAL CHANGES

ERRATA

Manual Printed: Feb 1969

SERIAL PREFIX OR NUMBER

MAKE MANUAL CHANGES

ERRATA:

Page 3-3, Paragraph h: Bracket the equation as follows:

Page 3-7, Figure 3-3:

Delete the words “slow-blow” from number 1. Change last sentence of number 7 to read “Output impedance is

Page 4-2, Paragraph 4-13:

Page 4-4, Figure 4-3, change the value of the following capacitors,

A1C13 at collector and base of A1Q15 to .01 µf.

A1C14 at collector and base of A1Q14 to .01 µf.

Page 4-6, Figure 4-4:

Change the stock number of Q37 to 1853-0020,

Page 6-2, Table 6-1, change as follows:

Delete:

AIC13, 0160-2264 C : FXD CER 20

PF 5%, 500 VDCW

A1C14, 0160-2264 C : FXD CER 20 PF 5%, 500 VDCW

Add : A1C13, 0160-2930 C: FXD CER .01 µf +80-20% 100 VDCW A1C14, 0160-2930 C : FXD CER .01 µf + 80-20% 100 VDCW

Page 6-9, Table 6-1, change as follows:

2100-2659 R: VAR WW 50K OHM 5% LIN 1-1/2 W (SERIAL PREFIX 904 and below)

2100-2849 R: VAR WW 50K OHM 5% LIN 1-1/2 W (SERIAL PREFIX 919 and above)

1000Ω. “

Page 6-12, Table 6-2, change as follows:

Delete: 0160-2264 C: FXD CER 20 pF 5%, 500 VDCW Add: 2 to the TQ column for 0160-2930

Page 7-3, Figure 7-1, change as follows:

Delete test point 7 from voltage-to-time converter

A1-11

Page 7-5, Figure 7-7, Assy A1, change as follows:

Delete: 5. 2V from test point 7 and 2.

ADD :

Page 7-11, Figure 7-9, change as follows:

Change the value of A1C13 and A1C14 to .01 µf.

Page 7-13/7-14, Figures 7-11 and 7-12.

Delete page 7-13/7-14, Figures 7-11 and 7-12,

Add new page 7-13/7-14, Figures 7-11 and 7-12 (an attached sheet)

1. 2V for test point 7.

5. 2V for test point 2.

A1-12

APPENDIX B

B1-1

APPENDIX C

MAINTENANCE ALLOCATION CHART

C-1.

Section I.

General.

INTRODUCTION

This Maintenance Allocation Chart designates overall responsibility for

the performance of maintenance functions on the identified end item or

component.

The inplementation of field maintenance tasks upon this end item

or component will be consistent with the assigned maintenance operations. C-2 .

Maintenance Functions.

Maintenance functions will be limited to and defined as follows:

a. Insect To determine serviceabilty of an item by comparing its

physical, mechanical and electrical characteristics with established

standards.

_. Test. To verify serviceability and to detect electrical or

mechanical failure by use of test equipment.

c. Service. To clean, to preserve, to charge and to add fuel, lubricants,

cooling agents, and air,

If it is desired that elements, such as paint-

ing and lubricating, be defined separately, they may be so listed.

_. Adjust. To rectify to the extent necessary to bring into proper

operating range.

e. Align. To adjust specified variable elements of an item to bring

to optimum performance.

of instruments or test equipment used in precise measurement,

To determine the corrections to be made in the readings

Consists of the comparison of two instruments, me of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the

instrument being compared with the certified standard.

g. Install.

To set up for use in an operational environment such as

an emplacement, site, or vehicle.

h. Replace. To replace unserviceable items i. Repair.

Those maintenance operations necessary to restore an item to

with serviceable like items.

serviceable condition through correction of material damage or a specific failure. Repair may be accomplished at each category of maintenance.

C1-1

Overhaul. Normally, the highest degree of maintenance performed by

the Army in order to minimize time work in process is consistent with quality and economy of operation.

It consists of that maintenancs necessary

to restore an item to completely serviceable condition as prescribed by

maintenance standards in technical publications for each item of equipment.

Overhaul normally does not return an item to like new, zero mileage, or

zero hour condition.

Rebuild.

The highest degree of material maintenance. It consists

of restoring equipment as nearly as possible to new conditon in accordance

with original manufacturing standards.

Rebutld is performed only when required by operational considerations or other paramount factors and then only at the depot maintenance category.

Rebuild reduces to zero the hours

or miles the equipment, or component thereof, has been in use.

Symbols The uppercase letter placed in the appropriate column in-

dicates the lowest level at which that particular maintenance function is

to be performed.

C-3.

Explanation of Colums.

Listed below is an explanation of the columns shown in the maintenance

allocation chart:

Column 1 lists group numbers, the purpose

of which is to identify components, assemblies

, subassemblies and modules

with the next higher assembly.

Column 2, Functional Group.

ponents asseblies

, subassemblies and modules on which maintenance is

Column 2 lists the noun names of com-

authorized.

c. Column 3, Maintenance Functions.

Column 3 lists the lowest level

at which that particular maintenance function is to be performed.

Column 4, Tools and Equipment. This column shall be used to specify,

by code, those tools and test equipment required to perform the designated

function.

Column 5, Remarks.

Self-explanatory.

C1-2

C1-3

APPENDIX D

REPAIR PARTS LIST

D-1.

This appendix provides a list of repair parts for maintenance support of the equipment. The parts along with their descriptions are listed in table D-1 below.

D-2. Instructions for ‘requisitioning parts not identified by Federal.

Stock Numbers require the following information be furnished to the Sup-

ply officer:

a. Manufacturer’s Federal Supply Code Number.

_. Manufacturer’s identification number,

c. Manufacturer’s nomenclature.

Any other information as listed on parts list that will aid in

ideification of the item being requisitioned.

D-3. Remarks field in accordance with A

If DD Form 1348 is used, fill in all blocks except 4, 5, 6 and

725-50. Complete Form as follows:

In Blocks 4, 5 and 6 list Manufacturer’s Federal Supply Code

Number followed by a colon and the Manufacturer’s part number.

Complete Remarks Field as follows;

Nomenclature of the repair

part and any other identification to assist Supply Officer in procurement.

D-4.

Report of errors, omissions and recommendations Eor improving this

publication by the individual user is encouraged. Reports should be sub-

mitted on DA Form 2028 (Recommended Changes to DA Publications) and for-

warded direct to Commanding Officer,

Frankford Arsenal., ATTN: AMSWE-SMF-

W3100, Philadelphia, Pa. 19137.

D1-1

— .-— .—

Part ND. —- ——---

01$0-9198 ol!@323ft

0150-0059 0150-0380 9~50”9973

0160-2143 0160-2264 0160-2265 0160-2672 0150-2917

Table D-1.

—--—-—-——.

Description

C:FXD MECA 200 I?F

C:FXD I~cA 500 l?F 11 C:FXD CER 3.3-0.25

Pi? 500VDCW

C:FXD MY 0.22 ‘UF

la”: 200VDCW

C:I?XD MICA 1500 PF

1% 500VDCW

c:J?XD

CER 2000 PF

t80-20% 1000VIKW

C:FXD CER 20 PF 5%

500VDLW

C:FXD CER 22 PF 5’%

500VDCW

C:FXD MY 0.047 UF

5% 80vDW

C:FXD CER 0.2.5 UF

+80-20% 100VDGJ

Repair Parts List

.—-— -.——

Mfr.

for Power Meter 432A

Federal

supply

--— . -._.-— 28430

28480 72982

28430

2~480

91418 72982 72982 28480

84411

Code

Mfr. Part No.

-———(3~4(3.9193

0140-0234 301-000-COJO-339C

o150-93\3fl 0160-0978

Type B 301-900-cOW-200J 301-NPO-22PF 0160-2572 Type TA

Total I

Qty I

.+--

1 1

.—.—

FSN

5910-494-5056

5910-5;36-3233

I ,

5910-318-3758

0150-2930 0160-3043 0130-0106 0130-0137 0130-3229

0130-0291 ()”~<3()m~374

0130-1746 01,30-1819 01!30-1940

0180-2178 0360-3124

C:FXD

C:FXD cm 2 x 0.’305

C:FXD ELIWT ‘TA 60UF C:FXD ELECT 2.2 UF C:FXD

C:FXD ELECT lUF C:FXD ELECT iO UF

C:F.XD ELECT 15 UF C:FXD ELECT 100 W C:FXD ELECT 33 UT

C:F.Xl) ELECT 220 TERMMAL:SOILDER

CER 9.01 UF

+80”20: 100VDCW UP 20L 250VAC

20% 6VOIW

10% 2ovDcil

ELECT

10;:

10VOCN

10%

35VDW

10% 20VDC7J

1o’,, 20VOCJ

.+75-10% 50VDCW

10% 15VDCW

20% 3VD’CN

LUG

91418

56289 56289 56239

2B[+80

56289

28439

56239

28$80

56239

28LI~o

29C147A-CDH 150D6126x!)O0632 150D225x9023A2 0130-0229

15OD1O5X9O35A2 0130-93’74 150Di56X9023B2 0130-1819 109D336X9015C2-

D$-~

lo9D~27xooo8F2-

DYP

0360-3124

5910-194-3010 1 1

5910..127-16(33

1 1

5910-931-7955

5!710-931-7050 1 1 1

1 3

5940-393-933s

D1-2

.—. —

06!33-M!35

06S6-1055

0693-WM

06’?8-3136

Table D-1.

—— .—..

Descriptim

.——.

R:PXD

COMI? 5.8

OEM !i%

R:FXD CxCMF 1 MEGOHM

5% I12N

R:FXD MIKf FLM 2.15K

OHM 1% l/’3w

R:FXD MET FLM 17.8K

CmM 1% l/3w

Repair Parts List for Power Meter 432A (Continued)

——

1/4’4

—.—.

Mfr.

Federal

supply

—--- —

01121 01121 28490 28480

—

Codf

—.— .

——-

—.-——

Mfr. Park No,

..—-

C1368G5 EB 1955 0698-0034 0698-3136

..——

Total ~

‘“+

1 5995-451-8385 I

5905-577-9667

5935-974-6073

I ! 5935-391-4247

I 0698-315.5 0698-3156

36’?8-3150

0693-3250

0638-340:

(X598-3428 0698-3438 0698-3441

0698-3444 0693-3+54

0638-3635

0693-4466 0638-6635--

(y157-o~3~

0757-0199

~ FGFXD Ml!X FLM 316 !

omfl%l/8w

[

! I

‘ i

R:FXD ME12 I?LM 4,64K

Om 1“%

R::FXD MU’ FLM 14.7K

OILY 1% l/8w

R:FXD Mm’ FLM31.6K

OEM 1% l/W

~~:~~D l~T ~ 454K

OHM lx l/8w

R:FXD .MSl! ‘FLM215

OHM 1%

R:F.XD MEr

OEM lx I}8W

R:??XI) MET FLM 147

OHM

R:FXD MET

OHM 174 l/8W

R:FXD MET FLM 215K

l/8w

l/3w

l/2w

FLM

14.7

FLM215

Om 1’% l,!WW

R:FXD

MET OX 680

OHM 5;% 2W

R:FXTI MET

OHM 1% l/8w

mm MEC m3ao

OHM 1% l!8W

R:3X) ME’f FLM ~00

OHM 1% l/2w

mm MET FM 21.X

mm lx lIW

FLM976

23480 .28480

2~4s0

23430 28430

23480 2W30 23480

~.q490

28430

28430 ~~43(3

~,3490 ~~43fj

0693-3?.55 0693-3156 0698-3160 0698-3260 0698-3401

0698-342!3 06%!3-3438 0698-3441 0698-3444 0698-3454

0698-3635 0698-4466 0698-6635 0757-9138 0;’5?-01’39

i 5905-976-3419 t

j 5905-974-6084

3 2 1

1 1 1 1 1

5905-974-6078

3905-998-1809

5905-991-4238 5935-374-6080 5905-974’-s076

\ ‘ 59’35-974-6074

5935-974-6077

5905-S30-6188

59’35-981-7513

D1-3

part

No.

0757-0230

0757 -!)239

Table D-1.

—- — ----------

.—

~ederal

;Upply co&? I

-—-.—-—-4——

2:3430

2?IM0

28430

lifr. ?art No.

------

0757-9279

0757-(3~*3

0757-92:8’)

To?xI1. ~

QtY 1

–—--

+_____

i?s N

---

1 ,

‘ 5905-993-1998

O’75?-3Y+6

o“757-043’l

0“?57-0416

0757 -343!7

()? 57

-04;+2

0?57-0451

0757-(3455

0757-9479

0757

-0/33.5

O757-109G

0811-2277

‘0811-2284

0811-253:1

0811-2535

0811-2536

0811-2537

0811-2538

1120-1497

E’XI) ME;?: FM

l/8w

R:FXD

MET

1/9

O!-I!”

FLM

1.00

‘Cml 1% l/3w

R:FXD

MKC FLM

511

OHM J.’Za l/8w

R:FXD

MET ELM 6.81K

OHM 1.% 113-W

R:FXD MTl

CmM 1%

R:FXD

Fill 113.3K

1!8W

I(H;I FILM f18.lK

0}324 1% l/3w

R:FXD

M?T FM

OEM 1%

].90K

1,/8w

R:FxD m:”r sill-l 152K

.FXD WW lK OHM

10. 1’% Ilkow

R;j’xD WJ

0.1%

31.!.3

u40w

Oml

R:J?XD NW 145.0 OHM

0,1%

I!40W

R:FXD

liw

3167

OKM

0.1% l./aJ

R“:FXD Ww 5K OHM

0“1%

l/4w

R:FXD WW 100

OHM

0.1% I/loll

~TER

2:3$30

2.YI!33

2843:)

28439

2Wt30

0757

-C)345

0:757 -!3431

0757-9416 13757 -!3439

0757 -!)442

(3757-3451

t)737-~[~65

0757.

!347!j

075? -9335

I 0757-1394 I

! (]811-2277

0811-223$

! j 0811

-253f’t

\ 0811-2536

0811-2.537

I 0311-2533

~ 1120-1497

.5905-993-1906

I I

5995-398-1795

~ 5905-993-1792

5905-389-7577

5905-974-5725

I f

, 5905-930-30$9

1420-oot32

BATTERY: f@GWR12EA13L

24rI

D1-4

“L120-0062

— . -—.

Part ii~.

Table D-1. Repair Parts List for Power Meter 432A (Continued)

Descr5ptim

— ..—-.— — --—

— .—.—

Mfr.

—.

‘

Federal

supply code

.——... ——_.

- ——

Mfr.

------

Pam XO.

.-—--— .—

—.— ..-———

Total

Qty

——_,

—._ --—--— _

FSN

1853-90’31

1853-0025 1853 -G020 1!3.54-0003 1854-000.5

1354433’9

1854-93?1

1354-0221

1901-cl!x26

TRANSISTOR: Pi?l’

SILICON 30V ‘300MW

TKANSISTWL:PNP

SILICON

2N2904,4

TRANS1ST9R:S lLJXO!J

PNP 2N3640

TfMTSISTOR:SILICOIJ

PNT?

‘TkfLNSISTOR:~

SILICON

T’RANSISTOR:SILICON

mN 2N70a

TRANSISTOR:SILICON

2N3053

!CELQJST.STOiZ:S

ILICOFJ

NPN 2NS701

TRANSISTOR:SILXGON

N-m

‘TRANSISTOJ1 NJAL:

SILICON N-m

DXCUllI:SILICON

9.75

2i)o I?IV

1!353-0001

2iW?904.\

1353’-0015 1853-0020 1354-0003 2N7 ’08

2if3053

2N17!)l

18Y+-0071 1854-9221

1901-0026

5961-362-5213

1 3

5961-’327-0845 5961-904-25[+9

5951-990-5369

1 7 1 3

5961-935-3703 5961-982-1617 5961-928-3161 5961-836-1887 5961-060-9638

1902-004!)

1902-9033

1902-0048 2100-1769 2100-1770

2100-1773 21OUCB1775 2100-2659 2110-9027

2140-9015

l)U)DIZ:SILICON

3(!MA

30WV

I)IOIX mmcoom:

lj,z~

DXODE 3REAKoOWX:

6.81V 5%

R:VAR Ww 50 Omf

10?L LIN l/2W

K:VAKWW 100 OHM

10%LIX? l/2w

R:VARWW lK OEM

10%L1N l/2W

R:VAR WW 5K OKM

10%L1N l/2w

R:VAK ml 50K OHM

Y%LIX

l-1/2W

FLTSE:O.125A 250V

LAMP: GLow W.O!?

NE-2H

1901-0042

3.N823 1902-9048

2~oo..l7~9 ~3,(3@.1770

~loo”1773

2100-1775 2100-2659

37.2.125

~ 2H

D1-5

3 1 1 1

1 1

5961-965-5917Ax1 5961-103-7417 5961-912-3099 5905-891-4230 5905-891-4229

5!305-115-715L3YA

5905”22i3-5990YA

1 1

6240-402-0401

——. ..—

Part lb.

31’30-2469

3100-2&70 3131-0033

31.!31-!)957 3~,31-l180

.—.—— -. — —----- — —— .- - - -—-

— ——

Table D-1.

DeScripti-m

SWSTC

H :

Repair Parts List for Power Meter 432A (Continued)

-—— .—

.Ro!! .4.RY

cALrMwrIoN

E’ILCT3R

SWITCH:ROT.LRY,

RAiwz SWITHi:SLIDE DPOT SWITCH:TOGGIE DPOT SWITCH:SLIDE 3P0’I

.—. —.

2M80

28430

7’9727 23490

92383

3100-2h69

3100-2&79

6510 c

3;91-0957

IIL-1920

——

I I

1 1 1

3101-1357

/3~~@907:3

812O*”1O82

swrrc~:mmmm:r,

FJJtE ZERO CABLE AssY:PUm’1

CORD

CM3LE ASSY:5 FT,

l!HEN41XTOk? +MBLE

28430

~/3430

2.!M89

3L01-1357

8120-9073 ~ 8120-1982 1

1 1

D1-6

By Order of the Secretary of the Army:

W. C. WESTMORELAND, General, United States Army,

Official:

KENNETH G. WICKHAM, Major General, United States Army, The Adjutant General.

DISTRIBUTION:

To be distributes in accordance with DA Form 12-37 (qty rqr

Block #201) Operator requirements for Gun, 20-MM XM163; DA Form

12-40 (qty rqr Block #168), Operator/Crew requirements for Gun,

20-MM XM167.

Chief of Staff.

HP 432a, 478a schematic

Specifications and Main Features

Frequently Asked Questions

User Manual

WARNING

TABLE OF CONTENTS

SECTION I

Section II

Section III

Section IV

SECTION V

Table 5-7

SECTION VI

Section VII

APPENDIX A

Figure A1-1

APPENDIX B

APPENDIX C

APPENDIX D