LeCroy -- 9450A -- Service Manual
File name: LeCroy-5683-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 378
Size: 34.60 Mbytes (36278716 Bytes)
Language: english
Revision: 1.0
Date: December 1991
Quality: Scanned document, all readable.
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MD5: f5637d3579cf84085a26fa92e118aa39
Downloads: 466 since 30 March 2014
1	Specifications

Waveform processing package Fast Fourier processing package
2	Basic Operation and Block Diagrams

DSO sub assemblies and block diagram Display description and
block diagram Base board block diagram

A/D converter description and block diagram Time base block
diagram and sampling rate table Processor block diagram
Front end block diagram

Power supply specifications and block diagram
3	Basic Performance Test Procedure

Internal Diagnostics and Calibration
4	Service Information and Procedures

Disassembly/Assembly diagram and procedure

Software upgrade procedure

Options description and table

Board exchange procedure

Power supply adjustment procedure

Front end calibration procedure

Display calibration procedure
5	Troubleshooting and Flow Charts

Service equipment and spare parts
6	Circuit Diagrams

Boards layout

Integrated circuits description
7	Mechanical Parts

Description and part number
8	Parts List
9	Connecting the 9450A to a Plotter or a printer

List of plotters and printers RS 232 interface GPIB interface
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Equipment information

LeCroy 9450A Oscilloscope
Model: 9450A
Date: 1991
Category: Measurement instruments
Group: Oscilloscope
                                    The LeCroy 9450A Dual-channel Digital Oscilloscope is a
powerful high— resolution instrument for waveform recording
and sophisticated analysis.

The LeCroy 9450A provides a bandwidth of 300 MHz, and
sampling rates of up to 400 megasamples/sec for transients
and 10 gigasamples/sec for repetitive waveforms. The
instrument features high-fidelity 8-bit ADCs, 50K of
non-volatile acquisition memory per channel, 200K of
additional waveform storage memory, extensive pulse
parameter analysis, and a highly sophisticated trigger
system to capture the most complex signals, including spikes
and glitches. It is fully programmable over GPIB or RS-232-C
interfaces. Hard copies are made at the touch of a button on
a wide range of digital plotters and printers.

High bandwidth - The 9450A portable digital oscilloscope
provides 300 MHz bandwidth on two channels. Combined with
many other features, this enables you to keep pace with
current and future test and measurement requirements.

Automatic PASS/FAIL testing - With this new feature, the
oscilloscope can automatically compare a source trace with a
tolerance mask, while simultaneously testing a set of
parameters against reference values. If the test fails, the
oscilloscope can perform up to six actions (hardcopy,
storage to memory card, TTL pulse, etc...).

PC Standard Memory Card - A memory card reader can be added
to the 9450A for applications requiring high-speed data
logging and non-volatile waveform storage. Waveforms and
setups can be stored at rates unmatched in the industry onto
128- or 512-Kbyte cards.

High sampling rates - High-resolution 8-bit Flash ADCs
provide sampling rates up to 400 megasamples/ sec
simultaneously over two channels. Repetitive signals are
digitized at equivalent rates up to 10 giga-samples/sec in
random interleaved sampling mode.

Long non-volatile memories-Two non-volatile 50K acquisition
memories, one per channel, store signals. By segmenting the
two acquisition memories, nonvolatile waveform storage of 1
to 200 waveforms is available. An additional 200K of RAM is
available for waveform processing, storage and display.

Comprehensive triggering - Capabilities include pre- and
post-triggering, trigger hold-off by time or number of
events, delay by time or number of events,TV trigger, logic
trigger, state qualified trigger,
time/events qualified trigger and width-based triggers
including FASTGLITCH and interval width trigger.

FASTGLITCH triggering - The 9450A features LeCroy’s
innovative FASTGLITCH trigger method which enables it to
trigger even on non-recurrent glitches less than 2.5 nsec
wide, independently of the time-base speed.

Signal processing - The 9450A’s built-in waveform processing
includes mathematics (add, subtract and invert) and
summation averaging (up to 1000 sweeps). Modular
architecture allows easy installation of extended signal
processing packages such as Fast Fourier Analysis.

Pulse parameters - Up to twenty signal characteristics
(risetime, falltime, RMS voltage, etc.) can be automatically
calculated on displayed, stored, expanded and processed
waveforms. Exceptional processing power means these values
are instantaneously updated with each acquisition.

Waveform expansion - Fine signal details are revealed using
LeCroy’s exclusive DUAL-ZOOM expansion which can magnify
waveforms by as much as 1000 times. Expanded waveforms have
improved timing resolution (up to ± 0.001 % of full scale)
and can be analyzed further using the 9450A's signal
processing and pulse parameters.

Ease of use, auto-setup - Extensive processing power and
familiar analog controls make the 9450A exceptionally
responsive and easy to use. Repetitive waveforms are
acquired in approximately two seconds with the convenient
auto-setup facility. Recurring front-panel setups can be
stored and recalled via simple pushbutton controls.