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LeCroy 9400A

LeCroy 9400A
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THE LeCROY MODEL 9400A
DIGITAL OSCILLOSCOPE
North American Headquarters:
LeCROY Corporation
700 Chestnut Ridge Road
Chestnut Ridge, NY 10977-6499
U.S.A.
Tel: 914-578 6097
European Headquarters:
LeCROY S.A.
2, rue Pr~-de-la-Fontaine
Case postale 341
1217 Meyrin 1 / Geneva
Switzerland
Tel: 41-22-719-21-11
Serial Number
January 1990

Table of Contents

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LeCroy 9400A Specifications

General IconGeneral
Channels2
Memory Depth1 Mpts
Vertical Resolution8 bits
FFTYes
Power Supply100-240 VAC, 50/60 Hz
Acquisition ModesPeak Detect, Average
Trigger ModesEdge, Pulse Width, Video
Input Impedance1 MΩ

Summary

I. GENERAL INFORMATION

1.1 Warranty

Details LeCroy's warranty terms for oscilloscope products, including repair and replacement policies.

1.2 Assistance and Maintenance Agreements

Information on customer support services, maintenance agreements, and extended warranty options.

1.3 Documentation Discrepancies

Addresses potential discrepancies between the manual and product due to rapid physical modifications.

1.4 Service Procedure

Procedure for returning products for maintenance and repair, both under and out of warranty.

1.5 Return Procedure

Guidelines for returning products for repair, including obtaining a Return Authorization Number (RAN).

1.6 Initial Inspection

Recommendation to inspect shipments immediately upon delivery and check against the packing list.

2. PRODUCT DESCRIPTION

2.1 Introduction

Overview of the 9400A as a high-performance digital oscilloscope for research and test applications.

2.2 9400 A Architecture

Description of the 9400A's internal architecture, including the 68000 microprocessor and block diagram.

2.3 ADCs and Memories

Details on the 9400A's dual ADCs, acquisition memory, and performance specifications.

2.4 Trigger

Explanation of the 9400A's digitally-controlled trigger system and its various modes.

2.5 Automatic Calibration

Information on the automatic calibration facility ensuring vertical and time base accuracy.

2.6 Display

Description of the 9400A's CRT display, its interactive interface, and screen dump capability.

2.7 Manual and Programmed Control

Overview of the 9400A's front panel layout and operation, including interactive menus.

3. INSTALLATION

3.1 Safety Information

Crucial safety information regarding power sources, grounding, and electrical hazards for operating the 9400A.

3.2 Operating Voltage

Instructions for checking and setting the correct mains voltage for the 9400A's operation.

3.3 Switching on the 9400 A

Procedure for powering on the 9400A, including the auto-calibration sequence.

4. DISPLAY LAYOUT

4.1 Menu Field (I)

Description of the Menu Field (I) used for interacting with menus and performing operations via menu keys.

4.2 Time and Frequency Field (II)

Explanation of the Time and Frequency Field (II) for displaying time differences and frequencies.

4.3 Trigger Delay Field (III)

Details on the Trigger Delay Field (III) indicating pre-trigger and post-trigger settings.

4.4 Abridged Front Panel Status Field (IV)

Description of the Abridged Front Panel Status Field (IV) for displaying acquisition parameters.

4.5 Displayed Trace Field (V)

Explanation of the Displayed Trace Field (V) showing trace identity and settings.

4.6 Message Field (VI)

Details on the Message Field (VI) for displaying acquisition status or control errors.

5. MANUAL OPERATION

5.1 Front-panel Controls

Detailed explanation of all front-panel controls for manual operation of the 9400A.

5.2 Menu Controls

Guide to navigating and using the 9400A's interactive menus for various functions.

6. REAR PANEL CONTROLS AND CONNECTORS

6.1 Fuse Protection

Information on the fuse protection mechanism for the 9400A's power supply against shorts and overloads.

6.2 Accessory Power Connectors

Details on LEMO connectors providing output voltages for FET probes.

6.3 Battery Pack

Description of the rechargeable NiCd battery pack for front-panel setup retention.

6.4 GPIB and RS-232-C Port Selection

Explanation of rear panel thumbwheel switch for setting addresses for GPIB and RS-232-C ports.

6.5 Plotter Connector

Information on the RS-232-C plotter connector for direct interfacing and hard copy archiving.

7. REMOTE OPERATIONS

7.1 Programmed Control

Overview of controlling the 9400A's functions remotely using English-like commands via RS-232-C or GPIB.

7.2 RS-232-C Ports

Details on the two RS-232-C ports for computer/terminal operation and plotter interfacing.

7.3 GPIB Port (Option OP02 only)

Information on the 9400A's GPIB interface for high-speed data transfer, compliant with IEEE-488.

7.4 GPIB and RS-232-C Command Format

Explanation of command syntax, format, and structure for GPIB and RS-232-C remote control.

7.5 Data Block Transfers

Description of the structure and formats for transferring data blocks between the 9400A and a host computer.

7.6 Commands

Comprehensive list and explanation of all remote commands, including acquisition, display, and control functions.

7.7 Binary Format of Waveform Descriptors

Details on the binary format of waveform descriptors, including parameter addresses and bit sizes.

7.8 Format of Trigger Time(s)

Explanation of the format and transmission of trigger time intervals for acquired waveforms.

7.9 Data Addressing Conventions

Conventions for addressing data values on the screen and accessing inaccessible points via remote control.

7.10 Interpretation of Waveform Data Values

Guidance on converting integer waveform data to volts using scale and offset parameters.

7.11 Use of the Service Request (SRQ) Interrupts

Explanation of Service Request (SRQ) generation, handling, and configuration for GPIB and RS-232-C.

8. BASIC 9400 A WAVEFORM MEASUREMENTS AND OPERATING PROCEDURES

8.1 Repetitive Signal Acquisition

Procedure for acquiring and displaying repetitive signals using basic 9400A settings.

8.2 Single Shot Acquisition

Steps for acquiring a single pulse waveform using single-shot acquisition mode.

8.3 Trace Expansion - Expand AB

Guide to using trace expansion functions to magnify specific parts of waveforms.

8.4 Sequential Recording of Single Events in Segmented Memory

Procedure for sequentially recording multiple single events using segmented memory.

8.5 Slow Signal Recording

Instructions for recording slow signals, like a 1 Hz sine wave, using manual or AUTO trigger.

8.6 Window Triggering

How to use window triggering to capture signals exceeding specific amplitude limits.

8.7 Storing and Recalling Front Panel Setups

Procedure for saving and recalling front panel configurations for quick setup recall.

8.8 Signal Storage in Memories C, D

Steps to store waveforms from CHAN 1 and CHAN 2 into reference memories C and D.

8.9 Redefinition Function - Expand Memories C, D

Using the Redefine function to expand waveforms stored in reference memories C and D.

8.10 Auto-store in Memory C, D

Using the Auto-store mode to automatically save current waveforms into reference memories.

8.11 Common Expand Mode

Procedure for expanding two traces simultaneously and synchronizing their intensified regions.

8.12 Remote Control Via the RS-232-C Port

Guide to controlling the 9400A remotely via RS-232-C, including hardware setup and commands.

8.13 Remote Control Via GPIB (Option OP02 only)

Instructions for remote control of the 9400A using GPIB, including example programs.

8.14 Making a Plot when the Computer, the 9400 A, and the Plotter are all Connected Together on a GPIB Bus (Option OP02 only)

Steps for plotting waveforms via GPIB when computer, 9400A, and plotter are connected.

8.15 Configuring the Parallel Polling (Option OP02 only)

Procedure for configuring parallel polling settings using GPIB commands.

9. GETTING THE MOST OUT OF YOUR 9400 A

9.1 Front Panel Controls

Guidance on utilizing front panel controls for optimal instrument operation and response.

9.2 Accurate Amplitude Measurements

Tips for achieving accurate amplitude measurements by utilizing the full dynamic range of the ADC.

9.3 Accurate Time Measurements

Techniques for accurate time measurements, including trace expansion and cursor usage.

9.4 Auto-calibration

Explanation of the auto-calibration process for maintaining accuracy of time base and vertical gain.

10. WP01 WAVEFORM PROCESSING OPTION

10.1 Processing Capabilities

Overview of the WP01 option's capabilities, including averaging, arithmetic, and functions.

10.2 Setting Up a Waveform Processing Function Manually

Step-by-step guide for manually setting up waveform processing functions like averaging and extrema.

10.3 Remote Control of Waveform Processing Functions

Information on remotely controlling WP01 functions using commands like REDEFINE and INSPECT.

10.4 Additional Values in the Descriptors of Processed Waveforms

Details on additional descriptor fields specific to processed waveforms, like function type and scaling units.

10.5 Vertical Scaling Units

Explanation of the generalized system for vertical scales, including 'fgain', 'P_V', and 'P_s'.

10.6 Index of Topics

An index listing topics related to the WP01 Waveform Processing Option by paragraph and topic.

11. FAST FOURIER WAVEFORM PROCESSING OPTION (WP02, V 2.06 FT)

11.1 Processing Capabilities

Overview of the FFT option's capabilities, including transform size, display types, and window functions.

11.2 Modification to WP01 Functions

How WP01 functions are modified when the WP02 FFT option is installed.

11.3 FFT Processing Examples

Practical examples demonstrating FFT spectrum analysis using the 9400A calibrator waveform.

11.4 Remote Control of FFT Processing

Remote control commands specific to FFT processing, including REDEFINE for FFT and FFT Power Average.

11.5 FFT Application Hints

Practical suggestions for optimizing FFT analysis, window selection, and display types.

11.6 FFT9400 A Glossary

Definitions of key terms related to FFT processing, including aliasing, leakage, and Nyquist frequency.

11.7 Errors and Warnings

Information on potential errors and warnings encountered during FFT processing and their meanings.

11.8 Table of Nyquist Frequencies

A table relating Nyquist frequencies to the number of points, SS/RIS mode, and time/div settings.

11.9 References

List of references for further reading on Fast Fourier Transforms and window functions.

11.10 Index of Topics

An index of topics related to the FFT processing option.

APPENDIX

Index of remote commands (GPIB and RS-232-C)

Alphabetical index of all remote commands for GPIB and RS-232-C interfaces, with section references.

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