HP 8719ET, 8722ET, 8719ES, 8720ES, 8720ET Service Manual

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Page 1

Service Guide

HP 8719ET/20ET/22ET

HP 8719ES/20ES/22ES

Network Analyzers

HP Part Number 08720-90397

Printed in USA

September 1999

Hewlett-Packard Company

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Notice

The information contained in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including

but not limited to, the implied warranties of merchantability and ﬁtness for a particular purpose. Hewlett-Packardshallnot be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

Certiﬁcation

Hewlett-Packard Company certiﬁes that this product met its published speciﬁcations at the time of shipment from the factory. Hewlett-Packard further certiﬁes that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members.

Regulatory and Warranty Information

The regulatory and warranty information is located in Chapter 15 , “Safety and

Regulatory Information.”

Assistance

Product maintenance agreements and other customer assistance agreements are available for Hewlett-Packard products. For any assistance, contact your nearest Hewlett-Packard sales or service ofﬁce. See Table 15-1 for the nearest ofﬁce.

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Safety Notes

SOFTKEY

The following safety notes are used throughout this manual. Familiarize yourself with each of the notes and its meaning before operating this instrument. All pertinent safety notes for using this product are located in Chapter 15 , “Safety and Regulatory

Information.”

WARNING Warning denotes a hazard. It calls attention to a procedure which, if

not correctly performed or adhered to, could result in injury or loss of life. Do not proceed beyond a warning note until the indicated conditions are fully understood and met.

CAUTION Caution denotes a hazard. It calls attention to a procedure that, if not

correctly performed or adhered to, would result in damage to or destruction of the instrument. Do not proceed beyond a caution sign until the indicated conditions are fully understood and met.

How to Use This Guide

This guide uses the following conventions:

Front-Panel Key

Screen Text This represents text displayed on the instrument’s screen.

This represents a key physically located on the instrument.

This represents a “softkey,” a key whose label is determined by the instrument’s ﬁrmware.

iii

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Documentation Map

The Installation and Quick Start Guide provides procedures for installing, conﬁguring, and verifying the operation of the analyzer. It also will help you familiarize yourself with the basic operation of the analyzer.

The User’s Guide shows how to make measurements, explains commonly-used features, and tells you how to get the most performance from your analyzer.

The Reference Guide provides reference information, such as speciﬁcations, menu maps, and key deﬁnitions.

The Programmer’s Guide provides general HP-IB programming information, a command reference, and example programs. The Programmer’s Guide contains a CD-ROM with example programs.

The CD-ROM provides the Installation and Quick Start Guide, the User’s Guide, the Reference Guide, and the Programmer’s Guide in

PDF format for viewing or printing from a PC.

The Service Guide provides information on calibrating, troubleshooting,and servicing your analyzer. The Service Guide is not part of a standard shipment and is available only as Option 0BW, or by ordering HP part number 08720-90397. A CD-ROM with the Service Guide in PDF format is included for viewing or printing from a PC.

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Contents

1. Service Equipment and Analyzer Options

Information on This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Service Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Principles of Microwave Connector Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6

Analyzer Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Option 1D5, High Stability Frequency Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Option 004, Step Attenuator (ET Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Option 007, Mechanical Transfer Switch (ES Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Option 010, Time Domain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7

Option 012, Direct Access Receiver Conﬁguration (ES Models) . . . . . . . . . . . . . . . . . . . . .1-7

Option 085, High Power System (ES Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Option 089, Frequency Offset Mode (ES Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Option 400, Four-Sampler Test Set (ES Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Option 1CP, Rack Mount Flange Kit With Handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Option 1CM, Rack Mount Flange Kit Without Handles . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8

Service and Support Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9

Option W54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10

2. System Veriﬁcation and Performance Tests

Sections in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2

How to Test the Performance of Your Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

ANSI/NCSL Z540–1–1994 Veriﬁcation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Non–ANSI/NCSL Z540–1–1994 Veriﬁcation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Instrument Veriﬁcation Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

Preliminary Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Required Equipment and Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Check the Temperature and Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

Clean and Gauge All Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7

Perform the Internal Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8

Procedure to Perform Operator’s Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9

Check the Test Port Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10

System Veriﬁcation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-18

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19

Equipment Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-23

Measurement Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-25

Veriﬁcation Device Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-29

Performing the Veriﬁcation Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30

If the System Fails the Veriﬁcation Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-34

Interpreting the Veriﬁcation Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-35

Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-37

Frequency Accuracy Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-38

Level Accuracy Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-41

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Contents

Source Linearity Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-43

Dynamic Range Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47

Performance Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

3. Adjustments and Correction Constants

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

A7 Switch Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Source Pretune Correction Constants (Test 43) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Analog Bus Correction Constants (Test 44) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

IF Step Correction Constants (Test 47) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

ADC Offset Correction Constants (Test 48) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Serial Number Correction Constants (Test 49) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Protected Option Numbers Correction Constants (Test 50) . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Unprotected Hardware Option Correction Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Output Power Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Preparing the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Setting the Main Power DAC to Preset Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Setting the Potentiometers to the Minimum Levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Adjusting the Mid Band Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Adjusting the Low Band Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Adjusting the High Band Power (Agilent 8722ET/ES) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Fine Tuning the Flatness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Power Linearity Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

Preparatory Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

Blanking Adjustment (Test 54) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

Preparing the Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

Initialize EEPROMs (Test 53) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

EEPROM Backup Disk Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34

Correction Constants Retrieval Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-35

Loading Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

Loading Firmware into an Existing CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

Loading Firmware into a New CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38

Reference Assembly VCO Tune Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40

Frequency Accuracy Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43

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Contents

API Spur Avoidance and 100 kHz FM Sideband Adjustment . . . . . . . . . . . . . . . . . . . . . . .3-44

FM Sideband Adjustment (100 kHz Spurs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-44

API Adjust. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-46

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-47

Raw Offset Correction Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-48

Raw Offset for the R Channel (ET/ES Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-49

Raw Offset for the A and B Channels (ES Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-51

Raw Offsets for the A and B Channels (ET Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-54

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-57

Sampler Calibration Correction Constants (Test 51). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-58

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-61

4. Start Troubleshooting Here

Information on This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Having Your Analyzer Serviced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4

Step 1. Initial Observations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Initiate the Analyzer Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Step 2. Operator’s Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7

Procedure to Perform Operator’s Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8

In Case of Difﬁculty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9

Step 3. HP-IB Systems Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10

If Using a Plotter or Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11

If Using an External Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11

Troubleshooting Systems with Multiple Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12

Troubleshooting Systems with Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12

Step 4. Faulty Group Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13

Power Supply Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

Check the Rear Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

Check the Post Regulator (A8)LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14

Digital Control Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15

Observe the Power Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15

Verify Internal Tests Passed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16

Source Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17

Phase Lock Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-17

Check Source Output Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18

No Oscilloscope or Power Meter? Try the ABUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-20

Receiver Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-21

Checking the R Channel Output (ET and ES Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-22

Checking the A Channel Output (ES Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23

Checking the B Channel Output (ET and ES Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-24

Switch Repeatability Check (ES Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-25

Accessories Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-26

Overall Instrument Block Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-27

Agilent 8719ES and Agilent 8720ES Standard, Option 007, 012, 085, 089, 1D5 . . . . . . .4-27

Agilent 8719ES and Agilent 8720ES Option 400, 012, 085, 1D5. . . . . . . . . . . . . . . . . . . .4-28

Agilent 8722ES Standard, Option 007, 012, 085, 089, 1D5 . . . . . . . . . . . . . . . . . . . . . . . .4-29

Agilent 8722ES Option 400, 012, 089, 1D5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-30

vii

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Agilent 8719ET and Agilent 8720ET Standard, Option 004 . . . . . . . . . . . . . . . . . . . . . . . 4-31

Agilent 8722ET Standard, Option 004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-32

5. Power Supply Troubleshooting

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Power Supply Troubleshooting Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Simpliﬁed Block Diagram of Power Supply Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Start Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Check the Green LED and Red LED on the Preregulator (A15) . . . . . . . . . . . . . . . . . . . . 5-6

Check the Green LEDs on the Post Regulator (A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Measure the Post Regulator (A8) Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

If the Green LED of the Preregulator (A15) Is Off or Blinking . . . . . . . . . . . . . . . . . . . . . . . 5-8

Check the Line Voltage, Selector Switch, and Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

If the Red LED of the Preregulator (A15) Is On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Check the Post Regulator (A8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Verify the Preregulator (A15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Check for a Faulty Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11

Check the Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Inspect the Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

If the Green LEDs of the Post Regulator (A8) Are Not All ON . . . . . . . . . . . . . . . . . . . . . . 5-13

Maintain A15W1 Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Check the Post Regulator (A8) Fuses and Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

Remove the Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Brieﬂy Disable the Shutdown Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Inspect the Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Check the Fuses and Isolate A8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

Fan Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Fan Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Check the Fan Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Short A8TP3 to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Intermittent Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Power Supply Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-21

6. Digital Control Troubleshooting

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

CPU Board (A7) Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

A7 Switch Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

Checking The CPU (A7) Red LED Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Display Troubleshooting (A18,A19) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7

Evaluating Your Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Red, Green, or Blue Pixels Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

Dark Pixels Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8

Newtons Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Troubleshooting the GSP (A19) and the Display (A18) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Measure the Supply Voltages Applied to the GSP (A19) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

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Run Display Test 55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10

Inspect Ribbon Cable Repeat Display Test 55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10

Perform Walking One Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-10

Run Display Tests 59-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-12

Front Panel Troubleshooting (A1/A2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13

Check Front Panel LEDs After Preset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13

Identify the Stuck Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-14

Inspect Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-17

Test Using a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-17

Run the Internal Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-18

If the Fault Is Intermittent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20

Repeat Test Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-20

HP-IB Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-21

Digital Control Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-23

7. Source Troubleshooting

Information on This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

Source Troubleshooting Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3

Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4

Start Troubleshooting Here. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5

Power Not within Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6

Phase Lock Error Message Displayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6

Broadband Phase Lock Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

Swap IF Output Cables to Check R Sampler Assembly (A64) . . . . . . . . . . . . . . . . . . . . . . .7-9

Check Open Loop Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-11

Check Reference Board (A12). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-13

Check Fractional-N Digital (A14) with ABUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-14

ChecktheFractional-NAnalog(A13)andFractional-NDigital(A14)withaSpectrumAnalyzer

7-15

Check the VCO (A14) Range with Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-16

Substituting Tuning Voltages to Check the VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-17

Divide-by-N (A14) Circuit Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18

A14-to-A13 Digital Control Signals Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-18

Pulse Generator (A52) Check with Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-20

Pulse Generator (A52) Check with Spectrum Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . .7-21

Band-Related Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-23

Broadband Power Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-27

ALC/Signal Separation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-27

Step Attenuator (A69) Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-28

8. Receiver Troubleshooting

Information on This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2

Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3

All Signal Paths Look Abnormal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

2nd LO Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

4 MHz Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4

At Least One Signal Path Looks Normal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5

Directional Coupler Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-8

Page 10

Contents

A and B Sampler Check by Substitution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Sampler Voltage Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

2nd Converter Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10

9. Accessories Troubleshooting

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2

Inspect and Gauge Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

Inspect the Error Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Isolate the Fault in the RF Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

Verify the RF Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

Verify Shorts and Opens by Substitution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

10. Service Key Menus and Error Messages

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

Service Menus - Internal Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-4

Tests Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6

Test Options Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8

Self Diagnose Softkey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10

Test Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-10

Service Menu - Service Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-17

Service Modes Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-19

Service Modes More Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21

Analog Bus on OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

Description of the Analog Bus (ANAB). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

The Main ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

The Frequency Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-22

Analog In Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-23

Analog Bus Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-24

PEEK/POKE Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31

Firmware Revision Softkey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-32

HP-IB Service Mnemonic Deﬁnitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-33

Invoking Tests Remotely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-33

Analog Bus Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-34

Service Related Error Messages in Alphabetical Order . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-35

11. Error Terms

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

Error Terms Can Also Serve a Diagnostic Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

Measurement Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4

Error Term Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5

If Error Terms Seem Worse than Typical Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7

Uncorrected Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8

Error Term Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-10

Directivity (EDF and EDR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-11

Source Match (ESF and ESR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12

Reﬂection Tracking (ERF and ERR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13

Isolation (Crosstalk, EXF and EXR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-14

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Contents

Load Match (ELF and ELR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-15

Transmission Tracking (ETF and ETR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-16

12. Theory of Operation

Information on This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2

System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-3

Functional Groups of the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-5

Power Supply Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-6

A15 Preregulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-6

A8 Post Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7

Voltage Indications: the Green LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8

Digital Control Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-9

A1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-9

A2 Front Panel Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-9

A7 CPU/A10 Digital IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-9

A18 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-10

A19 Graphics System Processor (GSP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

A20 Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

A16 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

Source Group Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13

Source Pretune . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14

A14/A13 Fractional-N Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14

A52 Pulse Generator: the Harmonic Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14

A64 R Sampler: Down-Converting the Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-14

A11 Phase Lock: Comparing Phase and Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-15

Tuning the YIG Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-15

Phase Locked Sweep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-15

A12 Reference: The Crystal Reference Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-16

Source Block: The YIG Oscillator Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-16

ALC: Automatic Leveling Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-18

Signal Separation: ES Models Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-19

A58 M/A/D/S Modulator, Ampliﬁer, Detector, Splitter . . . . . . . . . . . . . . . . . . . . . . . . . . .12-19

A58 M/A/D and A74 Switch Splitter (Option 400 Only) . . . . . . . . . . . . . . . . . . . . . . . . . .12-20

A69 Step Attenuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-20

A74 Transfer Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-21

A56 Lower Front Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-21

A60 and A61 DC Bias Tees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-21

A62 and A63 Directional Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-21

Signal Separation: ET Models Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-22

A58 M/A/D/S Modulator, Ampliﬁer, Detector, Splitter . . . . . . . . . . . . . . . . . . . . . . . . . . .12-22

A69 Step Attenuator (All ET Option 004 Models). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-23

A23 DC Block (Agilent 8719ET Option 004 and Agilent 8720ET Option 004 Only). . . .12-23

A62 Directional Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-23

Receiver Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-24

Samplers and Second Converters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-24

A10 Digital IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-25

13. Replaceable Parts

Page 12

Contents

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-2

Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3

Rebuilt-Exchange Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-4

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-5

Replaceable Part Listings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-6

Top Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-8

Bottom Assemblies and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-12

Front RF Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-64

Top Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-66

Rear Cables, All Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-69

Front Cables, All Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-70

Front Panel Assembly, Inside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-72

Rear Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-74

Rear Panel Assembly, Option 1D5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-76

Hardware, Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-78

Hardware, Bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-80

Hardware, Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-82

Hardware, Preregulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-83

Chassis Parts, Outside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-84

Chassis Parts, Inside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-86

Miscellaneous Part Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-87

14. Assembly Replacement and Post-Repair Procedures

Information on This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-2

Assembly Replacement Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-3

Procedures in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-4

Replacing the Line Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-5

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-5

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-5

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-5

Removing the Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6

Removing the top cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6

Removing the side covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6

Removing the bottom cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-6

Removing the Front Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-8

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-8

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-8

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-8

Removing the Front Panel Interface and Keypad Assemblies . . . . . . . . . . . . . . . . . . . . . . 14-10

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-10

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-10

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-10

Removing the Display Lamp and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-12

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-12

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-12

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-12

Removing the Rear Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-14

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-14

xii

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Contents

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-14

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-14

Removing the Rear Panel Interface Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-16

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-16

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-16

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-16

Removing the Source Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-18

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-18

Start Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-18

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-19

Removing the A7 CPU Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-20

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-20

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-20

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-20

Removing the A7BT1 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-22

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-22

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-22

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-22

Removing the A15 Preregulator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-24

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-24

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-24

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-24

Removing the A19 Graphics Processor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-26

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-26

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-26

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-26

Removing the A3 Disk Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-28

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-28

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-28

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-28

Removing the A62, A63 Test Port Couplers and LED Board Assemblies . . . . . . . . . . . . .14-30

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-30

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-30

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-30

Removing the A26 High Stability Frequency Reference (Option 1D5) Assembly . . . . . . .14-32

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-32

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-32

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-32

Removing the B1 Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-34

Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-34

Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-34

Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-34

Post-Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-35

15. Safety and Regulatory Information

General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-2

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-2

Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-2

Shipment for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-2

xiii

Page 14

Contents

Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4

Instrument Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-5

Lithium Battery Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-5

General Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6

Safety Earth Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6

Before Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6

Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-6

Compliance with German FTZ Emissions Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 15-8

Compliance with German Noise Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-8

Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-9

xiv

Page 15

14 Assembly Replacement and

Post-Repair Procedures

14-1

Page 16

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Information on This Chapter HP 8719ES/20ES/22ES

RF Network Analyzers

Information on This Chapter

This chapter contains procedures for removing and replacing the major assemblies of the HP 8719ET/ES, HP 8720ET/ES, and HP 8722ET/ES network analyzers. A table showing the corresponding post-repair procedures for each replaced assembly is located in the

“Post-Repair Procedures” on page 14-35.

14-2 Service Guide

Page 17

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Assembly Replacement Sequence RF Network Analyzers

Assembly Replacement Sequence

The following steps show the sequence to replace an assembly in the network analyzer.

Step 1. Identify the faulty group. Begin with Chapter 4 , “Start Troubleshooting Here.”

Follow up with the appropriate troubleshooting chapter that identiﬁes the faulty assembly.

Step 2. Order a replacement assembly. Refer to Chapter 13 , “Replaceable Parts.” Step 3. Replace the faulty assembly and determine what adjustments are necessary.

Refer to this chapter.

Step 4. Perform the necessary adjustments. Refer to Chapter 3 , “Adjustments and

Correction Constants.”

Step 5. Perform the necessary performance tests. Refer to Chapter 2 , “System

Veriﬁcation and Performance Tests.”

WARNING These servicing instructions are for use by qualiﬁed personnel only.

To avoid electrical shock, do not perform any servicing unless you are qualiﬁed to do so.

WARNING The opening of covers or removal of parts is likely to expose

dangerous voltages. Disconnect the instrument from all voltage sources while it is being opened.

WARNING The power cord is connected to internal capacitors that may remain

live for 10 seconds after disconnecting the plug from its power supply.

CAUTION Many of the assemblies in this instrument are very susceptible to damage

from ESD (electrostatic discharge). Perform the following procedures only at a static-safe workstation and wear a grounding strap.

Service Guide 14-3

Page 18

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Assembly Replacement Sequence HP 8719ES/20ES/22ES

RF Network Analyzers

Procedures in This Chapter

The following sections describe the assembly replacement procedures for the HP 8719ET/ES, HP 8720ET/ES, and HP 8722ET/ES assemblies:

• Replacing the Line Fuse , on page 14-5

• Removing the Covers , on page 14-6

• Removing the Front Panel Assembly, on page 14-8

• Removing the Front Panel Interface and Keypad Assemblies , on page 14-10

• Removing the Display Lamp and Assembly, on page 14-12

• Removing the Rear Panel Assembly, on page 14-14

• Removing the Rear Panel Interface Board Assembly, on page 14-16

• Removing the Source Assemblies , on page 14-18 — M/A/D/S (A58)

— YIG 1 (A54) — YIG 2 (A55) — Cavity Oscillator (A57)

• Removing the A7 CPU Board Assembly, on page 14-20

• Removing the A7BT1 Battery, on page 14-22

• Removing the A15 Preregulator Assembly, on page 14-24

• Removing the A19 Graphics Processor Assembly, on page 14-26

• Removing the A3 Disk Drive Assembly, on page 14-28

• Removing the A62, A63 Test Port Couplers and LED Board Assemblies , on page 14-30

• Removing the A26 High Stability Frequency Reference (Option 1D5) Assembly, on

page 14-32

• Removing the B1 Fan Assembly , on page 14-34

NOTE After replacing the assemblies, perform the corresponding adjustment and

veriﬁcation tests located in “Post-Repair Procedures” on page 14-35.

14-4 Service Guide

Page 19

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Replacing the Line Fuse RF Network Analyzers

Replacing the Line Fuse

Tools Required

• small slot screwdriver

Removal

WARNING For continued protection against ﬁre hazard, replace fuse only with

same type and rating (3 A 250 V F). The use of other fuses or materials is prohibited.

1. Disconnect the power cord.

2. Use a small slot screwdriver to pry open the fuse holder.

3. Replace the blown fuse. For 115V operation, use a 5A 125V TD fuse (HP part number 2110-1059). For 230V operation, use a 4A 250V TD fuse (HP part number 2110-0734).

Replacement

1. Replace the fuse holder.

Service Guide 14-5

Page 20

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the Covers HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the Covers

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• T-20 TORX screwdriver

Removing the top cover

1. Remove both upper rear feet (item 1) by loosening the attaching screws (item 2).

2. Loosen the top cover screw (item 3).

3. Slide cover off.

Removing the side covers

1. Remove the top cover.

2. Remove the lower rear foot (item 4) that corresponds to the side cover you want to remove by loosening the attaching screw (item 5).

3. Remove the handle assembly (item 6) by loosening the attaching screws (item 7).

4. Slide cover off.

Removing the bottom cover

1. Remove both lower rear feet (item 4) by loosening the attaching screws (item 5).

2. Loosen the bottom cover screw (item 8).

3. Slide cover off.

14-6 Service Guide

Page 21

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the Covers RF Network Analyzers

Service Guide 14-7

Page 22

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the Front Panel Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the Front Panel Assembly

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• small slot screwdriver

• ESD (electrostatic discharge) grounding wrist strap

• 5/16-inch open-end torque wrench (set to 10 in-lb)

Removal

1. Disconnect the power cord.

2. Remove the front bottom feet (item 1).

3. Remove all the RF cables that are attached to the front panel (item 2).

NOTE Options may differ from ﬁgure and have more than one RF cable on the front

panel.

4. Remove the Line button (item 3).

5. Remove the trim strips (item 4) from the top edge of the front frame by prying under the strip with a small slot screwdriver.

6. Remove the 7 screws (item 5) from the top and bottom edges of the frame. a. Remove all 4 ﬂathead screws from the top and the 3 ﬂathead screws from the

bottom.

NOTE The 3 bottom screws are on both ends and in the middle. They look like the

screws from the top. Do not remove the other 6 screws from the bottom.

7. Slide the front panel over the test port connectors.

8. Disconnect the ribbon cables (item 6) and (item 7). The front panel is now free from the instrument.

Replacement

1. Reverse the order of the removal procedure.

NOTE When reconnecting semirigid cables, torque the to 10 in-lb.

14-8 Service Guide

Page 23

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the Front Panel Assembly RF Network Analyzers

Service Guide 14-9

Page 24

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the Front Panel Interface and Keypad Assemblies HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the Front Panel Interface and Keypad Assemblies

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• small slot screwdriver

• ESD (electrostatic discharge) grounding wrist strap

• 5/16-inch open-end torque wrench (set to 10 in-lb)

Removal

1. Remove the front panel assembly from the analyzer, refer to “Removing the Front Panel

Assembly” on page 14-8.

2. Remove the 4 ribbon cables (item 1 through 4) from the front panel interface board.

3. Remove the 4 screws (item 5), that attach the interface board.

NOTE If the front panel interface board is to be replaced, install the new board at

this point and reverse steps 1 through 3 to complete the process.

4. Remove the 7 screws (item 6) from the A1 keypad board.

5. Remove the 3 screws (item 7) from the display cover.

6. Lift the display assembly slightly and slide out the A1 keypad board.

Replacement

1. Reverse the order of the removal procedure.

14-10 Service Guide

Page 25

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the Front Panel Interface and Keypad Assemblies RF Network Analyzers

Service Guide 14-11

Page 26

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the Display Lamp and Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the Display Lamp and Assembly

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• small slot screwdriver

• ESD (electrostatic discharge) grounding wrist strap

• 5/16-inch open-end torque wrench (set to 10 in-lb)

Removal

1. Remove the front panel assembly (A1), refer to “Removing the Front Panel Assembly”

on page 14-8.

2. Remove the 2 ribbon cables between:

• (Item 1) the inverter assembly (A20) and the front panel interface board (A2)

• (Item 2) the inverter assembly (A20) and the display assembly (A18)

3. Remove the 3 screws (item 3) that attach the display cover to the front panel.

4. Lift the display from the front panel and remove the 2 screws (item 4) from the outside of the display.

5. Pull the lamp (item 5) out with a curving side motion, as shown.

Replacement

1. Reverse the order of the removal procedure.

14-12 Service Guide

Page 27

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the Display Lamp and Assembly RF Network Analyzers

Service Guide 14-13

Page 28

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the Rear Panel Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the Rear Panel Assembly

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Disconnect the power cord and remove the top (item 1) and bottom covers, refer to

“Removing the Covers” on page 14-6.

2. Remove the 4 rear standoffs (item 2).

3. If the analyzer has option 1D5, remove the BNC jumper from the high stability frequency reference (item 3).

4. If the analyzer has option 085, remove the RF cable (item 4) and the connectors' attaching hardware (item 5).

5. Remove the hardware (item 6) that attaches the RS-232 connector to the rear panel.

6. Remove the 4 screws (item 7) that attach the interface bracket to the rear panel.

7. Remove the 6 screws (item 8) and (item 9), that attach the preregulator to the rear panel.

8. Remove the 8 screws (item 10) from the rear frame: 4 from the top edge and 4 from the bottom edge.

9. Remove the screw from the pc board stabilizer and remove the stabilizer.

10.Lift the reference board (A12) from its motherboard connector and disconnect the ﬂexible RF cable (item 11).

• Pull the rear panel away from the frame. Disconnect the ribbon cable (item 12) from the motherboard connector, pressing down and out on the connector locks. Disconnect the wiring harness (item 13) from the motherboard.

Replacement

1. Reverse the order of the removal procedure.

14-14 Service Guide

Page 29

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the Rear Panel Assembly RF Network Analyzers

Service Guide 14-15

Page 30

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the Rear Panel Interface Board Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the Rear Panel Interface Board Assembly

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Disconnect the power cord and remove the top and bottom covers, refer to “Removing

the Covers” on page 14-6.

2. If the analyzer has option 1D5, remove the high-stability frequency reference jumper (item 1).

3. Remove the hardware that attaches the 9 BNC connectors to the rear panel (item 2).

4. Remove the hardware that attaches the test set I/O interconnect to the rear panel (item 3).

5. Remove the rear panel from the analyzer (refer to “Removing the Rear Panel Assembly” in this chapter).

6. If the analyzer has option 1D5, disconnect the cable (item 4) from the rear panel interface board.

7. Disconnect the ribbon cable (item 5) from the rear panel interface board.

8. Disconnect the wiring for the 3 BNC connectors and remove the attaching hardware (item 6).

9. Remove the MEAS RESTART connector from the interface board, approaching it from the outside of the rear panel assembly (item 7).

Replacement

1. Reverse the order of the removal procedure.

14-16 Service Guide

Page 31

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the Rear Panel Interface Board Assembly RF Network Analyzers

Service Guide 14-17

Page 32

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the Source Assemblies HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the Source Assemblies

Tools Required

• T-15 TORX screwdriver

• 5/16-inch open-end torque wrench (set to 10 in-lb)

• ESD (electrostatic discharge) grounding wrist strap

Start Removal

1. Disconnect the power cord and remove the top cover, refer to “Removing the Covers” on

page 14-6.

2. Remove the front panel (refer to “Removing the Front Panel Assembly” in this chapter).

3. Remove the source module cover.

A58 M/A/D/S Removal

4. Disconnect the cables (item 1) and (item 2 for all but Option 400) from the M/A/D/S.

5. Remove the 4 screws (item 3) from each corner of the assembly.

Oscillator Removal

6. Remove the 3 screws (item 4) that attach the source module to the analyzer.

7. Disconnect the cables (item 1) and (item 2 for all but Option 400) from the M/A/D/S.

8. Remove the 4 screws (item 5) and (item 6) from the source module bracket. Remove the bracket.

9. Lift the source module out of the analyzer.

10.Remove a screw (item 7) from the back of the oscillator.

11.Disconnect attaching RF cables.

A59 Source Interface Board Removal

12.Remove the 3 screws (item 4) that attach the source module to the analyzer.

13.Disconnect the cables (item 2) and (item 3 for all but Option 400) from the M/A/D/S.

14.Remove the 4 screws (item 4) and (item 5) from the source module bracket. Remove the bracket.

15.Lift the source module out of the analyzer.

16.Remove 3 screws to detach the bottom source module cover.

17.Remove 4 screws that attach the source control board to the source module frame.

18.Place one hand on the top of the A59 board, with your thumb near the A58 M/A/D/S, to push the board. Place your other hand on the bottom side of the A59, with your thumb

14-18 Service Guide

Page 33

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the Source Assemblies RF Network Analyzers

and index ﬁnger put through the drilled holes, to pull the board.

Replacement

1. Reverse the order of the removal procedure.

NOTE When replacing the A59 source interface board, push the board evenly on all

the microcircuit pins. Check all the pin sockets from the back of the A59 board to ensure that all of

the pins are inserted. For HP 8722ET/ES models, you may need an eye glass to inspect the shallow pins of the S1 high band switch.

When replacing the source module into the analyzer, push the cables aside before seating the module.

Service Guide 14-19

Page 34

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the A7 CPU Board Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the A7 CPU Board Assembly

Tools Required

• T-10 TORX screwdriver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Disconnect the power cord.

2. Remove the 4 bottom feet and bottom cover, refer to “Removing the Covers” on

page 14-6.

3. Remove the 4 screws (item 1) on the rear panel.

4. Turn the analyzer over and remove the screw (item 2) that secures the CPU board to the deck.

5. Disconnect the ribbon cable (item 3).

6. Disconnect the ribbon cable (item 4) from the CPU board.

7. Slide the board towards the front of the instrument so that it disconnects from the 3 standoffs (item 5).

8. Disconnect the ribbon attached at the rear of the CPU board.

9. Lift the board off of the standoffs.

Replacement

1. Reverse the order of the removal procedure.

14-20 Service Guide

Page 35

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the A7 CPU Board Assembly RF Network Analyzers

Service Guide 14-21

Page 36

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the A7BT1 Battery HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the A7BT1 Battery

Tools Required

• T-10 TORX screwdriver

• ESD (electrostatic discharge) grounding wrist strap

• soldering iron with associated soldering tools

Removal

1. Remove the A7 CPU board, refer to “Removing the A7 CPU Board Assembly” on

page 14-20.

2. Unsolder and remove A7BT1 from the A7 CPU board.

WARNING Battery A7BT1 contains lithium. The battery may explode if it is

incorrectly replaced. Do not incinerate or puncture this battery. Either dispose of the discharged battery, according to manufacturer's instructions, or collect as small chemical waste.

Replacement

1. Make sure the new battery is inserted into the A7 board with the correct polarity.

2. Solder the battery into place.

3. Replace the A7 CPU board, refer to “Removing the A7 CPU Board Assembly” on

page 14-20.

14-22 Service Guide

Page 37

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the A7BT1 Battery RF Network Analyzers

Service Guide 14-23

Page 38

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the A15 Preregulator Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the A15 Preregulator Assembly

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Remove the rear panel, refer to “Removing the Rear Panel Assembly” on page 14-14.

2. Disconnect the wire bundles (item 1) (item 2) from the analyzer.

3. Remove the preregulator (A15) from the frame.

Replacement

1. Reverse the order of the removal procedure.

NOTE

• When reinstalling the preregulator (A15), make sure the 3 grommets on the wiring bundles are seated in the slots on the back side of the preregulator and also in the slot in the card cage wall.

•After reinstalling the preregulator (A15), be sure to set the line voltage selector to the appropriate setting, 115 V or 230 V.

14-24 Service Guide

Page 39

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the A15 Preregulator Assembly RF Network Analyzers

Service Guide 14-25

Page 40

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the A19 Graphics Processor Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the A19 Graphics Processor Assembly

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Disconnect the power cord and remove the front panel, refer to “Removing the Front

Panel Assembly” on page 14-8.

2. Disconnect the 2 ribbon cables (item 1) and (item 2).

3. Remove the 2 screws (item 3) that attach the GSP to the front of the analyzer.

4. Pull the GSP (A19) board (item 4) out of the analyzer.

Replacement

1. Reverse the order of the removal procedure.

14-26 Service Guide

Page 41

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the A19 Graphics Processor Assembly RF Network Analyzers

Service Guide 14-27

Page 42

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the A3 Disk Drive Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the A3 Disk Drive Assembly

Tools Required

• T-8 TORX screwdriver

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• small slot screwdriver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Disconnect the power cord and remove the bottom and left side covers, refer to

“Removing the Covers” on page 14-6.

2. Remove the front panel, refer to “Removing the Front Panel Assembly” on page 14-8.

3. Turn the instrument upside-down and disconnect the ribbon cable (item 1) from the CPU board.

4. Remove the 4 screws (item 2) that secure the disk drive bracket to the side of the frame.

5. Slide the disk drive out of the instrument.

6. Remove the 4 screws (item 3) that secure the disk drive to the bracket.

Replacement

1. Reverse the order of the removal procedure.

14-28 Service Guide

Page 43

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the A3 Disk Drive Assembly RF Network Analyzers

Service Guide 14-29

Page 44

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the A62, A63 Test Port Couplers and LED Board Assemblies HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the A62, A63 Test Port Couplers and LED Board Assemblies

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• small slot screwdriver

• ESD (electrostatic discharge) grounding wrist strap

• 5/16-inch open-end torque wrench (set to 10 in-lb)

Removal

1. Remove the bottom cover, refer to “Removing the Covers” on page 14-6.

2. Remove the front panel, refer to “Removing the Front Panel Assembly” on page 14-8.

3. Reaching the connections from the bottom of the analyzer, disconnect the 4 RF cables attached to the couplers: 2 from the back of the couplers and 2 from between the couplers.

4. Remove the 6 screws (item 1) from the bottom edge of the front panel frame.

5. Remove the screw (item 2) from the right side of the coupler bracket.

6. Remove the coupler nuts (item 3).

LED Board Removal

7. Remove the 3 screws (item 4) that attach the LED board to the coupler bracket.

Replacement

1. Reverse the order of the procedure.

NOTE When reconnecting semirigid cables, torque the connections to 10 in-lb.

14-30 Service Guide

Page 45

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the A62, A63 Test Port Couplers and LED Board Assemblies RF Network Analyzers

Service Guide 14-31

Page 46

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the A26 High Stability Frequency Reference (Option 1D5) Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the A26 High Stability Frequency Reference (Option 1D5) Assembly

Tools Required

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• 9/16-inch hex-nut driver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Remove the rear panel, refer to “Removing the Rear Panel Assembly” on page 14-14.

2. Disconnect W30 from the high stability frequency reference board (A26).

3. Remove the BNC connector nut and washer from the "10 MHz PRECISION REFERENCE" connector (item 1) on the rear panel.

4. Remove the screw (item 4) that attaches the 1D5 assembly to the rear panel.

5. Remove the screw (item 2) that secures the high stability frequency reference board (A26) to the bracket.

6. Slide the board out of the bracket. Be careful not to lose the plastic spacer washer (item 3) that is on the BNC connector as the board is being removed.

Replacement

1. Reverse the order of the removal procedure.

NOTE Before reinserting the high stability frequency reference board (A26) into the

bracket, be sure the plastic spacer washer (item 3) is on the BNC connector.

14-32 Service Guide

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HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Removing the A26 High Stability Frequency Reference (Option 1D5) Assembly RF Network Analyzers

Service Guide 14-33

Page 48

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Removing the B1 Fan Assembly HP 8719ES/20ES/22ES

RF Network Analyzers

Removing the B1 Fan Assembly

Tools Required

• 2.5-mm hex-key driver

• T-10 TORX screwdriver

• T-15 TORX screwdriver

• ESD (electrostatic discharge) grounding wrist strap

Removal

1. Remove the rear panel, refer to “Removing the Rear Panel Assembly” on page 14-14.

2. Remove the 4 screws (item 1) that secure the fan and fan cover to the rear panel.

Replacement

1. Reverse the order of the removal procedure.

NOTE The fan should be installed so that the direction of the air ﬂow is away from

the instrument. There is an arrow on the fan chassis indicating the air ﬂow direction.

14-34 Service Guide

Page 49

HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Post-Repair Procedures RF Network Analyzers

Post-Repair Procedures

After the replacement of an assembly, you must perform the service procedures listed in

Table 14-1.

NOTE Perform the procedures in the order that they are listed in the table.

Table 14-1 Related Service Procedures

Replaced Assembly Adjustments / Correction

Veriﬁcation

Constants (CC)

A1 Front Panel Keyboard None Internal Test 0

Internal Test 12 Internal Test 23

A2 Front Panel Processor None Internal Test 0

Internal Test 12 Internal Test 23

A4/A5/A6 Second Converter

A52 Pulse Generator Raw Offset CC

A8 Post Regulator None Internal Test 0

A7 CPU

Raw Offset CC Sampler Calibration CC (Test 51)

Sampler Calibration CC (Test 51)

A7 Switch Positions Load Firmware CC Retrieval Serial Number CC (Test 49) Option Number CC (Test 50) Analog Bus CC (Test 44) Source Pretune CC (Test 43) IF Step CC (Test 47) Raw Offset CC Sampler Calibration CC (Test 51) EEPROM Backup Disk

Frequency Accuracy Performance Test Dynamic Range Performance Test

Check A8 test point voltages Frequency Accuracy Performance Test

Level Accuracy Performance Test

Source Linearity Performance Test Dynamic Range Performance Test

A9 Source Control Raw Offset CC

A10 Digital IF A7 Switch Positions

a. If you have an EEPROM backup disk available, you only need to perform the ﬁrst three tests

listed.

Service Guide 14-35

Sampler Calibration CC (Test 51)

Analog Bus CC (Test 44) IF Ampliﬁer CC (Test 47)

Frequency Accuracy Performance Test Dynamic Range Performance Test

Dynamic Range Performance Test Internal Test 17 Internal Test 18 Internal Test 19

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Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Post-Repair Procedures HP 8719ES/20ES/22ES

RF Network Analyzers

Replaced Assembly Adjustments / Correction

Veriﬁcation

Constants (CC)

A11 Phase Lock A7 Switch Positions

Analog Bus CC (Test 44)

Source Pretune (Tests 43) A12 Reference Reference Assembly VCO Tune Frequency Accuracy Performance Test A13 Fractional-N

(Analog)

A14 Fractional-N (Digital)

A15 Preregulator None Internal Test 0 A16 Rear Panel Interface None No test available A17 Motherboard None Internal Test 0 A18 Display None Internal Tests 62–76 A19 Graphics System

Processor A51 Test Set Interface None Op Ck Port1 (Test 21)

A7 Switch Positions

Analog Bus CC (Test 44)

Fractional-N Spur Avoidance and

F M Sideband Adjustment

A7 Switch Positions

Analog Bus CC (Test 44)

None Internal Tests 55−76

Frequency Accuracy Performance Test

Internal Test 20 Frequency Accuracy Performance Test

Op Ck Port2 (Test 22)

A53 Low Band Assembly

A54 YIG2 20–40 GHz (HP 8722ET/ES)

A55 YIG1 2.4-20 GHz

A56 Lower Front Panel Assembly

A57 Fixed Oscillator

A58 M/A/D/S

A59 Source Interface

A60/61 DC Bias Tees

Output Power Adjustments

Power Linearity Adjustments

Source Pretune CC (Test 43)

Output Power Adjustments

Power Linearity Adjustments

Source Pretune CC (Test 43)

Output Power Adjustments

Power Linearity Adjustments

None Observe LEDs when switching from

Output Power Adjustments

Power Linearity Adjustments

Output Power Adjustments

Power Linearity Adjustments

Output Power Adjustments

Power Linearity Adjustments

Output Power Adjustments

Power Linearity Adjustments

Frequency Accuracy Performance Test Level Accuracy Performance Test Source Linearity Performance Test

S11 to S22 Frequency Accuracy Performance Test

Level Accuracy Performance Test Source Linearity Performance Test

Level Accuracy Performance Source Linearity Performance Test

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HP 8719ET/20ET/22ET Assembly Replacement and Post-Repair Procedures HP 8719ES/20ES/22ES Post-Repair Procedures RF Network Analyzers

Replaced Assembly Adjustments / Correction

Constants (CC)

A62/A63 (Directional

Couplers)

A64 R1 Sampler Raw Offset CC

A64 R2 Sampler (Option 400)

A65 A Sampler Raw Offset CC

A66 B Sampler Raw Offset CC

A69 (55 dB Step Attenuator)

A70 ( Step Attenuator)

A71 ( Step Attenuator)

S1 Switch (HP 8722ES)

Output Power Adjustments Power Linearity Adjustments

Sampler Cal CC Raw Offset CC

Sampler Cal CC

Sampler Cal CC Raw Offset CC

Sampler Cal CC Output Power Adjustments

Power Linearity Adjustments Output Power Adjustments

Power Linearity Adjustments

Veriﬁcation

Level Accuracy Performance Test Source Linearity Performance Test

Frequency Accuracy Performance Test Dynamic Range Performance Test

Frequency Accuracy Performance Test

Level Accuracy Performance Test Source Linearity Performance Test

S2/S3 Switches

S4 Transfer Switch

Output Power Adjustments Power Linearity Adjustments

Level Accuracy Performance Test Source Linearity Performance Test

Service Guide 14-37

Page 52

Assembly Replacement and Post-Repair Procedures HP 8719ET/20ET/22ET Post-Repair Procedures HP 8719ES/20ES/22ES

RF Network Analyzers

14-38 Service Guide