Lecroy 450 User Manual

9450A

Portable,

Dual-Channel

Digital

Main

I

50K

Automatic PASSIFAIL testing on
templates and parameters

Segmentable memories with trigger
point time stamps

FASTGLITCH trigger mode
Signal processing and
Optional high speed memory card

m

D

Unmatched display quality

TV

Oscilloscope

Features

memory

trigger and

per

XY

channel

display

FFT

analysis

The

Ultimate

for

Design

The LeCroy

bandwidth,
fidelity, extensive trigger capabilities and
signal processing. Aimed at meeting the
demands
working

munications, electronic design and test,
lasers, computers,
defense, the
an indispensable measurement tool in
any laboratory.

Like all LeCroy oscilloscopes, the

9450A

of different instruments: oscilloscope,
transient recorder, counterftimer,
frequency meter, signal averager, data

\ogger

highest performing data acquisition and

processing system available in any

portable

9450A

fast

of

researchers and engineers

in

fields

9450A

is

designed to serve as a range

and

digits\

instrument.

Instrument

and

sampling rates, high

as

vohmeter.

Test

combines high

diverse

NDT,

as

telecom-

physics and

will rapidly become

\t

offers

the

The

9450A

is

shown

shown

in

the

Functional

The LeCray
Oscilloscope is a pawertul high-resolu­fion instrument for waveform recording
and sophisticated analysis. It provides

bandwidth

rates of

and

The

8-bit ADCS,
tion memory per channel,

addiliona\
extensive pulse parameter analysis, and
a highly sophisticated trigger system

capture the

of

up

10

GS/sec for repetitive waveforms.

instrument features high-fidelity,

waveform storage

measuring

lower

trace,

Description

9450A

Dual-channel Digital

300

MHz,

to

400

MSIsec

50K

of non-volatile acquisi-

most

complex

a

indicating

frequency

peaks

and sampling

for transients

200K

of

memory,

signals,

at

to

shitf

keyed

1

MHz

signal. The

and

1.5

including spikes and glitches. It

oroarammable

;nt&aces. Hard copies

touch

of

digital ploners and printers.

ANALOG

a

9450A

The
its two high-resolution, 8-bit
per channel) which digtize waveforms
with speed and precision. By combining
this technology with ease of use,

LeCroy's

the best leatures of both analog and

digital oscilloscopes.

FFT

of

the

MHz.

over

a button

on

FEEL, DIGITAL

employs Flash technology in

portabie

waveform

GPlB

or

are

a wide range of

PRECISION

instrument

is

is

fully

RS-232-C

made

at the

ADCs

(one

provides

The front-panel controls of the 9450A
have been laid out in the style of an
analog oscilloscope, making it easy to

use from the very first moment. The

analog feel is enhanced by the rapid

instrument response and the fact that

waveforms are presented instantly on

a

bright high-resolution screen. For

automated test applications at1 the

front-panel controls, including cursor

positions and internal functions, are fully
programmable over RS-232-C or
interfaces.

Capturing and measuring signals has
never been easier. For repetitive signals
an auto-setup facility finds and displays
signals in less than
time phenomena the 9450A's long 50K
memories and extensive triggering
capabilities enable signals to be cap­tured the very
signal speed and duration are uncertain.

LONG NOH-VOLATILE MEMORIES

Only long memories allow high-fidelity

recording over extended periods of time.
On equal time-base settings the 9450A,

with 50K of memory per channel, will

sample waveforms up to 50 times faster

than an oscilloscope with only

memory. Faster sampling means better
single-shot bandwidth, better time
resolution and the power to expand
waveforms up to 1000 times to see
details that completely elude other
digital oscilloscopes. In addition, when
segmented, the
acquisition memories can store up to
200 waveforrns/channel (complete with
date and time stamps).

2

seconds. For one-

first

time, even when

9450A's

non-volatile

1

K

GPlB

of

TRIGGER

Push-button control enables the user to
choose the appropriate trigger functions
for his signal: standard triggering for

basic measurements and advanced
triggering to meet highly sophisticated

requirements.
The standard trigger facility provides all

the conventional trigger functions. Front-

panel controls select and adjust param-

eters such as pre- and post-trigger

settings, trigger level, slope, mode and

coupling. To help users quickly deter-

mine the

conditions,

of illustrative trigger graphics.

SMART triggering offers a solution to

even the most intricate triggering

problems. For example, FASTGLITCH

trigger can be used to locate and reveal

glitches and spikes less than 2.5 nsec

wide. Time-qualified trigger

ranging applications and can be used to
ignore unwanted signal

trigger features include hold-off (by time

or number of events), gated triggering
and conditional triggering, qualified

trigger, and trigger delayed

number of events.

The PASSiFAlL routine enables the
oscilloscope to compare a source
against a tolerance mask while simulta­neously testing
parameters.

9450A's trigger mode and

LeCroy has created a series

is

ideal for

ref[ections. Other

by

time or

a

set of extracted

trace

For instance, the oscilloscope can be set

PASS

up to

1,

The waveform in Channel 1 is
contained in
(all points inside the mask).

2.

The frequency in Channel 2 is less
than 10

3.

The maximum value of Function

is more than 1.45

4.

The

less than 850

If

any of these four conditions is not

satisfied, the test will FAIL.
Whether the test PASSes or FAILS, the

oscilloscope can, if the user wishes,
perform any or all of the following
actions:

-

Stop the acquisition.

-

Make a screen dump.

-

Store a trace to Memory

-

Store the selected traces to the
memory card.

-

-

Send a pulse from the rear-panel
accessory port.

The mask envelope can also be gener-

ated inside the oscilloscope.

if:

the

kHz.

RMS

value in Channel 1 is

Emit a "beep".

mask in Memory

V.

mV.

D.

C

F