Equipment information

LeCroy 9400A Oscilloscope
Manufacturer:
Model:
9400A
Date:
1990
Category:
Group:
Description:
Digital Oscilloscope

Information

The LeCroy 9400A Digital Oscilloscope is a powerful general-purpose tool for waveform recording and analysis. Combining ease of use with a comprehensive range of measurement and processing capabilities, it enables extremely precise measurements. The LeCroy 9400A provides 175 MHz bandwidth, 100 megasamples/sec 8-bit ADCs, ± 2 % DC accuracy (± 1 % optional), 32K memory per channel, and up to 192K of waveform storage memory. It is fully programmable over RS-232-C or GPIB interfaces. Plotter drivers enable color archiving via a wide range of digital plotters. High bandwidth and precision - Two independent channels, each with 175 MHz bandwidth and a high-performance 8-bit ADC, handle input signals with better than +2% DC accuracy (±1% optional). The 9400A features sampling rates of 100 megasamples/ sec for transient events. Long memories and a versatile cursor system (including voltage, time and cross-hair cursors), give time measurements with an accuracy of ±0.02% ofthe time-base setting, and resolution of ±0.002% full scale. High-resolution display-The 9400A’s large display screen produces bright, stable, razor-sharp pictures of your signal under any repetition rate conditions. Very accurate signal comparisons are possible as up to four waveforms (live, expanded or processed) can be displayed simultaneously on the high-resolution screen (1024 x 1024 pixels). Long memories - The long 32K acquisition memories of the 9400A Digital Oscilloscope capture waveforms with high fidelity. At similar time-base settings, the 9400A’s long memories allow sampling rates up to 25 times faster than that of instruments which have only 1K of acquisition memory (see graph below). Faster sampling rates ensure higher single-shot bandwidth as well as significantly reducing problems caused by undersampling and aliasing. The 9400A’s long memories allow displayed waveforms to be expanded up to 100 times to show the finest signal details. Transient recording - With a sampling rate of 100 megasamples/sec, the 9400A is an extremely powerful transient recorder. Long 32K data point acquisition memories, combined with a continuously adjustable trigger (from 100% pre-trigger to 10,000 divisions post-trigger at any time-base setting), ensure that rare events cannot be missed. Both channels are sampled simultaneously so that exact time correlation is maintained between channels. Full programmability - All the 9400A’s front-panel controls are fully programmable via the two RS-232-C Interface ports or the GPIB port. A single push-button initiates a screen dump for accurate color hard copies of the display via a wide range of digital plotters. The GPIB comes complete with LeCroy “MASP” Software offering computer control and mass storage on any PC compatible with the IBM® standard. Signal processing - The waveform processing options extend the applications of the 9400A to high bandwidth signal characterization, as well as mathematical and spectral analysis. The routines include averaging (summed and continuous), smoothing, integration, differentiation, square, square-root, full arithmetic, FFT spectral analysis, and Extrema monitoring. Mass storage and remote control - A sophisticated mass storage and remote control package is available to assist users involved in automated and computer-aided testing. Convenient portability for field applications is also provided by a lap-top computer.

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User Manual
Manual Type:
User Manual
Pages:
216
Size:
8.88 Mbytes (9314774 Bytes)
Language:
english
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Manual-ID:
Date:
Quality:
Scanned document, all readable.
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2013 01 26
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Service Manual
Manual Type:
Service Manual
Pages:
432
Size:
13.66 Mbytes (14320484 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
2013 01 26
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The present Service Manual applies to both the 9400 and the 9400À DSOs. Both models are called 9400 when the information applies equally to both oscilloscopes. Where the two models have distinct features, the model number 9400 or 9400A is explicitly stated. The chief purpose of this manual is to provide information for technicians, mainly authorized LeCroy repair office personnel, who are responsible for repairs and modifications to the LeCroy 9400/9400A DSOs. To this end, the descriptions provided are intended to be of sufficient depth to enable faults to be diagnosed to the level of the relevant board, so that the customer can be quickly supported by exchange of boards. In many cases the fault may be corrected at the local LeCroy office, but there are several areas of the circuitry where replacement of a part would need to be followed by calibration which could be done only with specialized equipment available at the main LeCroy establishments. Calibration procedures are given in this manual only for those areas which could be serviced locally. A DSO repair intervention at board exchange level can only be done by qualified technicians who have followed the basic 9400/9400A service training. LeCroy also offers these courses to customers. In addition, there is a very comprehensive 9400 Adjustment and Calibration Software Package CALS0FT (order codes CS01/CS02) based on the IBM PC or a compatible computer. This Software package is also available to customers, as well as all the hardware making up the 9400 Automated Calibration System (order code CS-S) which is used in all LeCroy service offices to ensure full performance of the instrument. This system provides Calibration Certificates traceable to NBS. LeCroy also offers training classes on DSO calibration. This manual could be improved by the inclusion of useful information resulting from detection and correction of faults in 9400/9400A DSOs at any LeCroy office. Each time a DSO is opened, an official LeCroy repair report should be sent to LeCroy S.A., attention Customer Service. The information is entered into a centrally maintained DSO data base for failure analysis and engineering feedback. Before undertaking any work on the 9400 DSO you should read the next sections - WARNINGS and VALID RANGE of FIELD MAINTENANCE.

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User Manual
Manual Type:
User Manual
Pages:
216
Size:
8.88 Mbytes (9307400 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
1990 01 01
Quality:
Scanned document, all readable.
Upload date:
2017 09 12
MD5:
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Downloads:
711

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1. GENERAL INFORMATION Technical Data Sheet 1.1 Warranty 1-1 1.2 Assistance and Maintenance Agreements 1-1 1.3 Documentation Discrepancies 1-2 1.4 Service Procedure 1-2 1.5 Return Procedure 1-2 1.6 Initial Inspection 1-3 2. PRODUCT DESCRIPTION 2.1 Introduction 2-1 2.2 9400A Architecture 2-1 2.3 ADCs and Memories 2-2 2.4 Trigger 2-3 2.5 Automatic Calibration 2-3 2.6 Display 2-3 2.7 Manual and Programmed Control 2-3 3. INSTALLATION 3.1 Safety Information 3-1 3.2 Operating Voltage 3-1 3.3 Switching on the 9400A 3-2 DISPLAY LAYOUT 4.1 Menu Field 4-1 4.2 Time and Frequency Field 4-2 4.3 Trigger Delay Field 4-2 4.4 Abridged Front Panel Status Field 4-2 4.5 Displayed Trace Field 4-2 4.6 Message Field 4-3 MANUAL OPERATION 5.1 Front-panel Controls 5-1 5.1.1 Vertical 5-1 5.1.2 Time Base 5-4 5.1.3 Trigger 5-6 5.1.4 Displaying Traces 5-12 5.1.5 Display Control 5-12 5.1.6 Screen Adjustments 5-1 5.1.7 Cursors 5-15 5.2 Menu Controls 5-18 5.2.1 Store Menu 5-18 5.2.2 Panel Status Menu 5-20 5.2.3 Memory Status 5-22 5.2.4 Storage and Recall of Front Panel Setups 5-24 5.2.5 Special Modes 5-25 5.2.5.1 Auto-store Mode 5-25 5.2.5.2 Common Expand Mode 5-26 5.2.6 RS-232-C Setup 5-26 5.2.7 Plotter Setup 5-28 6. REAR PANEL CONTROLS AND CONNECTORS 6.1 Fuse Protection 6-1 6.2 Accessory Power Connectors 6-1 6.3 Battery Pack 6-1 6.4 GPIB and RS-232-C Port Selection 6-1 6.5 Plotter Connector 6-2 7. REMOTE OPERATIONS 7.1 Programmed Control 7-1 7.2 RS-232-C Ports 7-1 7.3 GPIB Port (Option 0P02 only) 7-2 7.4 GPIB and RS-232-C Command Format 7-3 7.4.1 Introduction 7-3 7.4.2 Compound Commands 7-4 7.4.3 Command Format 7-4 7.4.4 Answers from the 9400A 7-5 7.4.5 Flushing of 9400A Output Buffer 7-6 7.4.6 Command Synchronization with Data Acquisition 7-6 7.4.7 Character Strings 7-7 7.4.8 Prompt 7-7 7.4.9 Errors and Adapted Values 7-8 7.5 Data Block Transfers 7-8 7.6 Commands 7-11 7.6.1 Notation 7-11 7.6.2 Acquisition Parameter Commands 7-12 7.6.3 Display Commands 7-15 7.6.4 Plotter Commands 7-20 7.6.5 Transfer Commands 7-22 7.6.6 Other Remote Commands 7-30 7.6.7 Communication Format Command 7-31 7.6.8 Status Byte and Mask Register Commands 7-34 7.6.9 GPIB Interface Message Interpretation 7-38 7.6.10 RS-232-C Only Commands 7-39 7.7 Binary Format of Waveform Descriptors 7.8 Format of Trigger Time(s) 7.9 Data Addressing Conventions 7.10 Interpretation of Waveform Data Values 7.10.1 Waveform Data in 8-bit Format 7.10.2 Waveform Data in 16-bit Format 7.11 Use of the Service Request (SRQ) Interrupts 7.11.1 Service Request in GPIB 7.11.2 Service Request in RS-232-C BASIC 9400A WAVEFORM MEASUREMENTS AND OPERATING PROCEDURES 8.1 Repetitive Signal Acquisition 8.2 Single Shot Acquisition 8.3 Trace Expansion - Expand A/B 8.A Sequential Recording of Single Events in Segmented Memory 8.5 Slow Signal Recording 8.6 Window Triggering 8.7 Storing and Recalling Front Panel Setups 8.8 Signal Storage in Memories C, D 8.9 Redefinition Function - Expand Memories C, D 8.10 Auto-Store in Memory C, D 8.11 Common Expand Mode 8.12 Remote Control Via RS-232-C Port 8.13 Remote Control Via GPIB (Option 0P02 Only) 8.14 Making a Plot when the Computer, the 9400A, and the Plotter are All Connected Together on a GPIB Bus (Option 0P02 Only) 8.15 Configuring the Parallel Polling (Option 0P02 Only) GETTING THE MOST OUT OF YOUR 9400A 9.1 Front Panel Controls 9.2 Accurate Amplitude Measurements 9.3 Accurate Time Measurements 9.4 Auto-calibration VPOl WAVEFORM PROCESSING OPTION 10.1 Processing Capabilities 10.2 Setting up a Waveform Processing Function Manually 10.2.1 Summed Average 10.2.2 Continuous Average 10.2.3 Extrema 10.2.4 Arithmetic 10.2.5 Functions 10.2.6 10.3 10.4 10.5 10.6 Remote Control of Waveform Processing Functions Additional Values in the Descriptors of Processed Waveforms Vertical Scaling Units Index of Topics Fast Fourier Waveform Processing Option (VP02, V 2.06FT) 11.1 11.2 11.3 11.4 Processing Capabilities Modification to WP01 Functions FFT Processing Examples Remote Control of FFT Processing 11.4.1 11.4.2 Remote Commands Additional Values in the Descriptors of FFT Processed Waveforms 11.5 FFT Application Hints 11.5.1 11.5.2 11.5.3 Some practical suggestions Relationships of 9400A FFT output waveforms to the FFT computation steps Computation Speed of FFT 11.6 11.7 11.8 11.9 11.10 FFT 9400A Glossary Errors and Warnings Table of Nyquist Frequencies References Index of TopicsSmoothing

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