HP 54620A User Manual

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HP 54620A Specifications

General

Category	Measuring Instruments
Model	54620A
Manufacturer	HP
Type	Oscilloscope
Bandwidth	100 MHz
Channels	2
Vertical Sensitivity	2 mV/div to 5 V/div
Vertical Resolution	8 bits
Interface	GPIB, RS-232
Power Requirements	100-240 VAC, 50/60 Hz
Display	Color LCD
Trigger Modes	Edge, Pulse, Pattern
Input Impedance	1 MΩ || 15 pF

Summary

Getting Started

Analyzer Setup and Preparation

Covers unpacking, power-on, adjusting hardware, and initial setup procedures for the logic analyzer.

Display and Interface Elements

Explains using color palettes, assigning channel colors, and understanding the front panel, keys, knobs, and softkeys.

Core Measurement Operations

Details probing circuits, setting up acquisitions with Autoscale, basic triggering, and channel management.

Making Analyzer Measurements

Setting Input Thresholds

Adjusting logic threshold levels for input signals to support different logic families.

Controlling Data Acquisition and Display

Managing data acquisition, using Autoscale, Auto Glitch Detect, and waveform display options.

Using Labels and Colors

Defining and assigning channel labels, turning labels on/off, and using color palettes.

Triggering the Analyzer

Configuring trigger types (Edge, Pattern, Advanced) and specifications for capturing data.

Examining and Measuring Waveform Data

Using delayed sweep, graticule, printing, cursors, and single/dual-channel measurements.

Interfacing with Other Instruments

Utilizing external trigger input and trigger output for extended capabilities.

Solving Problems

Resolving No Trace Display Issues

Steps to take when the logic analyzer shows no trace on the display.

Handling Unusual or Unexpected Displays

Diagnosing and fixing issues with abnormal or unexpected waveform displays.

Diagnosing Missing Channels

Troubleshooting steps when specific input channels are not visible on the display.

Ensuring Accurate Measurements

Time Base and Data Acquisition Concepts

Explains time base, sampling, acquisition memory, and their relation to analyzer functions.

Optimizing Signal Fidelity Through Probing

Covers probe impedance, grounding, and best practices for accurate measurements.

Understanding Glitch Detection and Aliasing

Details how glitch detection works, its display, and how to avoid aliasing.

Testing, Adjusting, and Troubleshooting the Analyzer

Performing Instrument Tests

Details self-tests for ROM, RAM, keyboard, display, and acquisition system.

Building Test Accessories

Instructions for fabricating test connectors and a dummy load for analysis.

Adjusting Analyzer Performance

Procedures for adjusting power supply voltages and display settings for optimal performance.

Troubleshooting Logic Analyzer Issues

Steps to diagnose and resolve general logic analyzer problems and LVPS issues.

Replaceable Parts

Removing and Replacing Assemblies

Covers the process of disassembling the analyzer and removing major components like the cabinet, fan, and board.

Ordering Replacement Parts

Information on how to identify and order necessary replacement parts from Hewlett-Packard.

Performance Characteristics

Analyzer System Specifications

Details specifications for input channels, horizontal system, acquisition, trigger, display, and measurements.

General and Environmental Data

Provides general, physical, safety, and environmental characteristics for the analyzer.

Messages

Operational and Configuration Messages

Covers errors, confirmations, status updates, and channel/measurement related messages.

System and Parameter Limit Messages

Details messages related to delay limits, duration limits, front panel locks, and illegal instructions.

Printing and Interface Messages

Explains messages concerning printing status, interface configuration, and printer errors.

Fault and Status Indicators

Covers messages related to test results, label initialization, threshold limits, and trace memory status.