LeCroy 9450 - Page 42

Apply sine
wave signal
3
V
p-p
of 75
MHz.
Adjust
PULSE
Width
to
7.5 nsec
for both < and
>,
and
switch
between
WIDTH
< and WIDTH
>.
Check:
-
Width < 7.5
nsec
scope
should
trigger
-
Width
>
7.5
nsec
scope
should
NOT
trigger
Set
the sine
wave generator
to
230 MHz.
Adjust
PULSE WIDTH
to 2.5
nsec
and switch
between WIDTH
< and
WIDTH
>.
Check:
-
Width
<
2.5
nsec
scope
should trigger
-
Width > 2.5
nsec
scope
should
NOT
trigger
Repeat the
above test for
CH2.
12.2
Trigger
on Interval Width
<
Set up
the
DSO:
Turn
off all the
traces
except
CHI.
Set the trigger:
-
Smart /Complex
Trigger
-
Trigger
Type
-
Width Type
-
Source
-
Coupl
-
Slope
-
Level
-
Delay
Set
the
input
of
CHI:
-
Coupl
-
Gain
-
Var
-
Offset
ON
SINGLE
SOURCE
INTERVAL
WIDTH
CHI
AC
+
zero
20
%
Pretrigger
50 2
.5
V/div
Gain
1
zero
17