HP 432A User Manual

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Document Part Number 5971-2668
Errata
This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett-Packard's former test
and measurement, semiconductor products and chemical analysis businesses are now part of Agilent
Technologies. To reduce potential confusion, the only change to product numbers and names has been in the
company name prefix: where a product number/name was HP XXXX the current name/number is now Agilent
XXXX. For example, model number HP8648 is now model number Agilent 8648.
Ce manuel peut contenir des références à <<HP>> ou <<Hewlett-Packard.>> Veuillez noter que les produits de
test et mesure, de semi-conducteur et d'analyse chimique qui avaient fait partie de la société Hewlett-Packard
sont maintenent une partie de la société Agilent Technologies. Pour reduire la confusion potentielle, le seul
changement aux noms de reference a été dans le préfixe de nom de société : là où un nom de référence était HP
XXXX, le nouveau nom de référence est maintenant Agilent XXXX. Par example, le HP 8648 s'appelle
maintenent Agilent 8648.
Diese Gebrauchsanweiseung kann Bezug nehmen auf die Namen HP oder Hewlett-Packard. Bitte beachten Sie,
dass ehemalige Betriebsbereiche von Hewlett-Packard wie HP-Halbleiterprodukte, HP-chemische Analysen
oder HP-Test- und Messwesen nun zu der Firma Agilent Technology gehören. Um Verwirrung zu vermeiden
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Questo manuale potrebbe contenere riferimenti ad HP o Hewlett-Packard. Si noti che le attività precedentemente
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Este manual puede hacer referencias a HP o Hewlett Packard. Las organizaciones de Prueba y Medición (Test
and Measurement), Semiconductores (Semiconductor Products) y Análisis Químico (Chemical Analysis) que
pertenecían a Hewlett Packard, ahora forman parte de Agilent Technologies. Para reducir una potencial
confusión, el único cambio en el número de producto y nombre, es el prefijo de la compañía: Si el producto solía
ser HP XXXX, ahora pasa a ser Agilent XXXX. Por ejemplo, el modelo HP8648 es ahora Agilent 8648.
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Printed in Malaysia September 2004

HP 432A Specifications

General

Brand	HP
Model	432A
Category	Measuring Instruments
Language	English

Summary

Warranty Information

Limitation of Warranty

Exclusions and limitations on the product warranty.

Limitation of Remedies and Liability

Specifies remedies and liability limits for product issues.

Responsibilities of the Customer

General Safety Precautions

Warning Notations

Highlights specific warnings for hazardous operations and conditions.

Safety Symbols and Warnings

Explanation of Safety Symbols

Defines symbols indicating electrical hazards, warnings, and cautions.

Section II: Installation

2-1. Initial Inspection

Steps for checking the instrument upon receipt for damage or completeness.

2-2. Mechanical Check

2-12. Primary Power Requirements

2-14. Internal Battery Operation

Information on the optional battery for portable operation and its capacity.

2-16. Battery Installation

Section III: Operating Information

3-17. Microwave Power Measurement Accuracy

Factors affecting power measurement accuracy, including mismatch and RF losses.

Turn On and Zeroing Procedure

Steps to power on the instrument and set its zero reference for accurate readings.

3-4. Controls, Connectors, and Indicators

Explanation of the front and rear panel controls, connectors, and indicators.

3-19. Mismatch Error

Analysis of how impedance mismatch affects power measurement results.

3-12. Battery Operation

How to operate the instrument using its internal battery.

3-21. RF Losses

3-22. Instrumentation Error

3-23. Calibration Factor and Effective Efficiency

How calibration factors compensate for measurement uncertainties.

3-27. Precision Power Measurement

Techniques for achieving higher accuracy power measurements.

3-30. Measurement Procedure

Section IV: Principles of Operation

4-1. Simplified Description

A high-level overview of the instrument's main sections and their functions.

4-11. RF Power Calculation Methods

Explains how RF power is derived from bridge voltages and calculation formulas.

4-5. Functional Block Diagram

A diagram illustrating the main functional blocks and signal flow within the instrument.

4-12. RF Power Measurement Calculation

Section V: Maintenance

5-16. Meter Accuracy Test

Procedure to verify the accuracy of the power meter's readings.

5-18. Meter Linearity Check

Procedure to check the linearity of the meter's response across ranges.

5-20. Fine Zero Range Check

Checks the range of the fine zero adjustment and its effect on the meter.

5-26. Calibration Procedure 2

5-33. Adjustment Procedures

General guidance on performing instrument adjustments for calibration.

5-37A. Auto Zero Adjustment

5-46. Out-of-Circuit Testing

5-17. Calibration Factor Test

Test to verify the instrument's response with varying calibration factors.

5-19. Zero Carryover Test

Test to measure the residual indication after switching ranges.

5-21. 432A Calibration Without 8477A Calibrator

Alternative calibration method using basic test equipment.

5-27. Cover Removal and Replacement

5-34. Initial Setup

5-38. Battery Charger Adjustment (Option 01 Only)

5-48. Component Replacement in Etched Circuits

5-4. Performance Tests

Procedures for testing the instrument's performance against specifications.

5-24. Calibration Procedure 1

5-6. Adjustments

Procedures for calibrating and adjusting the power meter.

5-36. Bridge Amplifier Tests

5-40. Isolating Trouble in Transistor Circuits

Guidance on troubleshooting transistor-related circuit problems.

5-10. Test Equipment

5-37. Meter and Recorder Output Calibration

5-14. 432A Performance Tests with 8477A Calibrator

Procedures for testing the instrument using an HP 8477A Calibrator.

5-15. Initial Set-Up

Section VII: Troubleshooting, Schematics, and Component Locations

Test Point Measurement Conditions and Voltages

Component Locations for Assy A1, A2, A7

Auto Zero Circuit Troubleshooting

Troubleshooting guide for the auto-zero circuit (P/O A1).

A1 Bridge Assembly Component Locations

A2 Meter Logic Assembly Component Locations

7-5. Troubleshooting

Guidance on troubleshooting procedures and using charts to diagnose issues.

Chopper Troubleshooting

432A Rear Panel Interior Component Locations

7-8. Schematics

Explains the purpose and interpretation of circuit schematics.

7-12. A1A1 Auto Zero Assembly