Service Guide

Publication number 01664-97005 Second edition, January 2000

For Safety information, Warranties, and Regulatory information, see the pages at the end of the book.

 Copyright Agilent Technologies 1987–2000 All Rights Reserved.

Agilent Technologies 1664A Logic Analyzer Agilent Technologies 1664A Logic Analyzer

The Agilent Technologies 1664A is a 50-MHz State/500-MHz Timing Logic Analyzer.

Features Some of the main features of the 1664A Logic Analyzer is as follows: • 32 data channels and 2 clock/data channels • 3.5-inch disk drive • Centronix (parallel) interface (with GPIB and RS-232C interfaces available as options) • Variable setup/hold time • 4 kbytes deep memory on all channels with 8 kbytes in half channel mode • Marker measurements • 12 levels of trigger sequencing for state and 10 levels of sequential triggering for timing • 100 MHz time and number-of-states tagging • Full programmability (with optional interface)

Service Strategy The service strategy for this instrument is the replacement of defective assemblies. This service guide contains information for finding a defective assembly by testing and servicing the 1664A. This logic analyzer can be returned to Agilent Technologies for all service work, including troubleshooting. Contact your nearest Agilent Technologies Sales Office for more details.

ii The Agilent Technologies 1664A Logic Analyzer

iii In This Book

This book is the service guide for the 1664A Logic Analyzers and is divided into eight chapters. Chapter 1 contains information about the logic analyzer and includes accessories, specifications and characteristics, and equipment required for servicing. Chapter 2 tells how to prepare the logic analyzer for use. Chapter 3 gives instructions on how to test the performance of the logic analyzer. Chapter 4 contains calibration instructions for the logic analyzer. Chapter 5 contains self-tests and flowcharts for troubleshooting the logic analyzer. Chapter 6 tells how to replace assemblies of the logic analyzer and how to return them to Agilent Technologies. Chapter 7 lists replaceable parts, shows an exploded view, and gives ordering information. Chapter 8 explains how the logic analyzer works and what the self-tests are checking.

iv Table of Contents

1 General Information Accessories 1–2 Specifications 1–3 Characteristics 1–3 Supplemental Characteristics 1–4 Recommended Test Equipment 1–8 2 Preparing for Use To inspect the logic analyzer 2–2 Ferrites 2–3 To apply power 2–4 To operate the user interface 2–4 To set the line voltage 2–4 To degauss the display 2–5 To clean the logic analyzer 2–5 To test the logic analyzer 2–5 3 Testing Performance

To perform the self-tests 3–3

To make the test connectors 3–6

To test the threshold accuracy 3–8 Set up the equipment 3–8 Set up the logic analyzer 3–9 Connect the logic analyzer 3–9 Test the TTL threshold 3–10 Test the ECL threshold 3–12 Test the − User threshold 3–13 Test the + User threshold 3–14 Test the 0 V User threshold 3–15 Test the next pod 3–16

To test the glitch capture 3–17 Set up the equipment 3–17 Set up the logic analyzer 3–18 Connect the logic analyzer 3–18 Test the glitch capture on the connected channels 3–20 Test the next channels 3–22

To test the single-clock, single-edge, state acquisition 3–23 Set up the equipment 3–23 Set up the logic analyzer 3–24 Connect the logic analyzer 3–26 Verify the test signal 3–27 Check the setup/hold combination 3–29

v Contents

To test the multiple-clock, multiple-edge, state acquisition 1–34 Set up the equipment 1–34 Set up the logic analyzer 1–35 Connect the logic analyzer 1–37 Verify the test signal 1–38 Check the setup/hold with single clock edges, multiple clocks 1–40

To test the single-clock, multiple-edge, state acquisition 1–45 Set up the equipment 1–45 Set up the logic analyzer 1–46 Connect the logic analyzer 1–48 Verify the test signal 1–49 Check the setup/hold combination 1–51

To test the time interval accuracy 1–54 Set up the equipment 1–54 Set up the logic analyzer 1–55 Connect the logic analyzer 1–57 Acquire the data 1–58

Performance Test Record 3–59 4 Calibrating and Adjusting Logic analyzer calibration 4–2 Set up the equipment 4–2

To adjust the CRT monitor alignment 4–3

To adjust the CRT intensity 4–5 5 Troubleshooting To use the flowcharts 5–2 To check the power-up tests 5–15 To run the self-tests 5–16 To test the power supply voltages 5–21 To test the CRT monitor signals 5–23 To test the keyboard signals 5–24 To test the disk drive voltages 5–25 To perform the BNC test 5–27 To test the logic analyzer probe cables 5–28 To test the auxiliary power 5–32 6 Replacing Assemblies To remove and replace the handle 6–5 To remove and replace the feet and tilt stand 6–5 To remove and replace the cover 6–5 To remove and replace the disk drive 6–6 To remove and replace the power supply 6–7

vi Contents

To remove and replace the Main Circuit board 6–7 To remove and replace the switch actuator assembly 6–8 To remove and replace the rear panel assembly 6–9 To remove and replace the front panel and keyboard 6–10 To remove and replace the intensity adjustment 6–10 To remove and replace the monitor 6–11 To remove and replace the handle plate 6–11 To remove and replace the fan 6–12 To remove and replace the line filter 6–12 To remove and replace the optional GPIB and RS-232C cables 6–13 To return assemblies 6–14 7 Replaceable Parts Replaceable Parts Ordering 7–2 Exploded View 7–3 Replaceable Parts List 7–4 Power Cables and Plug Configurations 7–8 8 Theory of Operation

Block-Level Theory 8–3 The 1664A Logic Analyzer 8–3 The Logic Acquisition Circuitry 8–6

Self-Tests Description 8–9 Power-up Self-Tests 8–9 System Tests (System PV) 8–10 Analyzer Tests (Analy PV) 8–13

GPIB (Optional) 8–15

RS-232C(Optional) 8–16

Centronix 8–17

vii Contents

viii 1

Accessories 1-2 Specifications 1-3 Characteristics 1-3 Supplemental Characteristics 1-4 Recommended Test Equipment 1-8

General Information General Information

This chapter lists the accessories, the specifications and characteristics, and the recommended test equipment.

Accessories

The following accessories are supplied with the 1664A Logic Analyzers.

Accessories SuppliedPart Number Qty Probe tip assemblies 01650-61608 2 Probe cables16550-61601 1 Grabbers (20 per pack) 5090-4356 2 Probe ground (5 per pack) 5959-9334 2 User’s Reference 01660-90904 1 Accessories Pouch 01660-84501 1 HIL Mouse A2838A 1

Accessories Available Other accessories available for the 1664A Logic Analyzer are listed in the Accessories for Agilent Logic Analyzers brochure. The table below lists additional documentation that is available from your nearest Agilent Technologies sales office for use with your logic analyzer.

Accessories Available Part Number Demo Training Kit E2433-60007 Programming Reference 01660-90933 Service Guide 01664-97005

1–2 General Information Specifications

Specifications

The specifications are the performance standards against which the product is tested. Maximum State Speed 50 MHz Minimum State Clock Pulse Width* 3.5 ns Minimum Master to Master Clock Time* 20.0 ns Minimum Glitch Width* 3.5 ns Threshold Accuracy ± (100 mV + 3% of threshold setting) Setup/Hold Time:* Single Clock, Single Edge 0.0/3.5 ns through 3.5/0.0 ns, adjustable in 500-ps increments Single Clock, Multiple Edges0.0/4.0 ns through 4.0/0.0 ns, adjustable in 500-ps increments Multiple Clocks, Multiple Edges 0.0/4.5 ns through 4.5/0.0 ns, adjustable in 500-ps increments

* Specified for an input signal VH = -0.9 V, VL = -1.7 V, slew rate = 1 V/ns, and threshold = -1.3 V.

Characteristics

These characteristics are not specifications, but are included as additional informat