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Agilent Technologies 83620A - User Manual

Agilent Technologies 83620A
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Service Manual
Agilent Technologies
83620A/22A/23A/24A/30A/40A/50A
Synthesized Sweepers
Serial Number Prefixes:
This manual applies to any instrument with the following model number and serial number prefix combinations. You may have to
modify this manual so that it applies directly to your instrument version. Refer to the Instrument History chapter.
Agilent Technologies 83620A/22A/24A
3420A, 3250A, 3245A, 3213A, 3145A
Agilent Technologies 83623A
3420A, 3339A, 3250A, 3245A, 3213A, 3145A
Agilent Technologies 83630A
3420A, 3250A, 3245A, 3213A, 3145A, 3143A, 3101A
Agilent Technologies 83640A
3420A, 3339A, 3250A, 3245A, 3213A, 3145A
Agilent Technologies 83650A
3420A, 3250A, 3245A, 3213A, 3145A, 3143A, 3052A
Part Number: 08360-90049
Printed in USA
November 1995
© Copyright 1997-2000 Agilent Technologies, Inc.
All manuals and user guides at all-guides.com
all-guides.com

Table of Contents

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Agilent Technologies 83620A Specifications

General IconGeneral
BrandAgilent Technologies
Model83620A
CategoryBlower
LanguageEnglish

Summary

Service Manual

Safety Notes and Considerations

General Safety Considerations

Essential safety precautions for servicing, including electrical shock warnings and proper grounding.

Before Applying Power

Instructions for verifying configuration and using an autotransformer before powering on the instrument.

Manual Conventions

Front Panel Key

Defines the representation of physical keys on the instrument's front panel.

Softkey

Defines how softkeys, whose labels depend on firmware, are represented.

Screen Text

Defines how text displayed on the instrument's screen is represented.

Instruments Covered By This Manual

Sales and Service Offices

Hewlett-Packard Sales and Service Offices

Lists sales and service office locations in the US and Europe.

European Field Operations

Details sales and service contacts for European locations.

Performance Tests

How to Use This Chapter

Guidance on navigating and performing tests within the Performance Tests chapter.

Operation Verification Tests

Covers procedures for verifying instrument functionality during incoming inspections.

Internal Timebase: Aging Rate

Procedure to measure and verify the accuracy of the internal timebase.

Swept Frequency Accuracy

Procedure to test the accuracy of the synthesizer's frequency settings.

Power Accuracy

Procedure to verify the accuracy of the synthesizer's output power.

Power Flatness

Procedure to measure and verify the flatness of the RF output power.

AM Accuracy

Procedure to measure the AM accuracy of the synthesizer.

FM Accuracy

Procedure to measure the FM accuracy of the synthesizer.

Adjustments

How To Use This Chapter

Guidance on performing adjustments and understanding chapter structure.

1. 10 MHz Standard

Procedure to adjust the frequency accuracy of the internal 10 MHz timebase.

3. Fractional-N Reference and API Spurs

Procedure to minimize three specific spurs (125 kHz reference, API1, API2).

5. Sampler Assembly

Procedures for adjusting sampler assembly components like match and loop gain.

9. Amplifier;Multiplier Adjustments

Procedures for adjusting amplifier/multiplier RF output and tracking filters.

10. Amplifier;Filter Adjustments

Procedures for adjusting the YIG tuned filter and amplifier/filter response.

12. Modulator Offset and Gain Adjustment

Procedure to calibrate DAC output voltages for AM/FM modulator.

13. ALC Power Level Accuracy Adjustment

Procedure to set and calibrate ALC constants for power accuracy.

14. Power Flatness

Procedure to measure and correct power flatness across frequency bands.

Calibration Constants

Definition

Explains what calibration constants are and their role in instrument operation.

Memory Areas

Describes the three memory areas reserved for calibration constants.

Checksum Verification

Procedure to verify the integrity of calibration constants stored in RAM.

Calibration Constant Password

Information on setting, disabling, and bypassing the calibration constant password.

Changing Working Data Calibration Constants

Procedure for modifying working data calibration constants.

Saving Working Data Calibration Constants

Procedure to save current calibration constants to a backup file.

Loading Default Data Calibration Constants

Procedure to recall factory default calibration constants.

Automated Tests

Setting Up the System

Details hardware and operating system requirements for automated test software.

Installing the Software

Instructions for installing the automated test software from disk.

Running the Software

Guidance on operating the automated test software and configuration limitations.

Automated Performance Tests

Overview of automated tests including step attenuator and power flatness.

1. Step Attenuator Flatness Test

Procedure to determine the actual attenuation of each attenuator card.

2. Power Flatness and Accuracy Test

Procedure to measure power flatness and accuracy using a power sensor.

4. Power Sensor Configuration and Calibration Factor File

Instructions for configuring power sensors and managing calibration factors.

Menu Maps

ALC MENU

Map of the ALC menu structure and softkey functions.

FREQUENCY MENU

Map of the Frequency menu structure and softkey functions.

MARKER MENU

Map of the Marker menu structure and softkey functions.

POWER MENU

Map of the Power menu structure and softkey functions.

SERVICE MENU

Map of the Service menu structure and softkey functions.

Disassembly and Replacement Procedures

Tools Required

Lists the tools necessary for disassembly and reassembly procedures.

Front Panel Procedures

Covers disassembly and reassembly of the front panel and its components.

Rear Panel Procedures

Covers disassembly and reassembly of the rear panel and its components.

RF Deck Procedures

Covers disassembly and reassembly of the RF deck assembly.

Motherboard Procedures

Covers disassembly and reassembly of the main motherboard.

Post-Repair

Table 8-1. Adjustments and Performance Tests Required After Repair or Replacement of an Assembly

Lists adjustments and performance tests needed post-repair for each assembly.

Replaceable Parts

Module-Exchange Program

Details the process for factory-repaired and tested assembly exchanges.

Ordering Information

Provides instructions on how to request replacement parts.

Major Assemblies

Lists major assemblies with their part numbers and descriptions.

Cables

Lists all cables with reference designators, part numbers, and descriptions.

Front Panel Hardware

Details hardware components for the front panel assembly.

Rear Panel Hardware

Details hardware components for the rear panel assembly.

Chassis Parts

Lists and illustrates the various chassis parts.

Miscellaneous Replaceable Accessories

Lists accessories, tool kits, and software related to the instrument.

Preventive Maintenance

How to Clean the Fan Filter

Instructions for cleaning the instrument's internal fan filter.

How to Clean the Display Filter

Instructions for cleaning the instrument's plastic display filter.

How to Replace the Line Fuse

Procedure for replacing the instrument's line fuse.

How to Replace the CPU Battery (A15 BT1)

Instructions for safely replacing the CPU battery.

Connector Care

Guidance on cleaning and care of the instrument's output connector.

Option Retrofits

001 Add Attenuator

Information on retrofitting Option 001 to add an attenuator.

003 Delete Keyboard;Display

Information on retrofitting Option 003 to delete keyboard/display.

004 Rear Panel RF Output

Information on retrofitting Option 004 for rear panel RF output.

700 MATE Compatibility

Information on retrofitting Option 700 for MATE system compatibility.

806 Rack Mount Slide Kit

Information on retrofitting Option 806 for rack mounting.

Instrument History

How to Use Instrument History

Guidance on how to interpret instrument history changes and production versions.

Index