LeCroy 9450 - Page 26

BASIC PERFORMANCE
TEST
PROCEDURE
FOR
THE
9450
DIGITAL
OSCILLOSCOPE
1
Turn-On
Before
switching on the
digital
oscilloscope (DSO),
check
that the
correct
line
voltage
is
set
at
the
rear-panel
power selector.
Switch
on
the
power
using the power
switch on the rear
panel. Then
check:
-
that
the
display turns on
after
about
10
seconds
-
that
the display
is
stable
-
that
the
range of INTENSITY
and GRID INTENSITY
is reasonable
Wait for about
20
minutes
for
the
scope to reach
a
stable operating
temperature.
2 Noise on
the Inputs
This is to
verify the proper
operation of all front-end components.
With no
signal connected to the inputs,
set
the DSO
as
follows:
-
turn
on traces
CHI and
CH2
-
Grid:
single
-
Input
couplings CHI and CH2: 1 M2
DC
-
Input
gain: 5
mV/di
v
-
Trigger:
SMART
(COMPLEX) Trigger:
OFF
Source: LINE
Coupling: AC
Mode:
NORM
-
Time/div:
-
BWL:
10 msec/div
OFF
Check:
-
displayed
waveforms
should have
a
constant band of less than
3
minor
divisions
-
there is
no discernible periodic
structure
1