LeCroy 9450 - Page 43

Set
the time
base:
-
Time/div
2
nsec/div
-
Interleaved
ON
Apply
a
sine
wave
signal
3
V
p-p
of
200
MHz
to
CHI.
Turn
to
INTERVAL
Width
< and
adjust
width
to
10
nsec.
Check:
-
200
MHz: Width
< 10
nsec,
scope
should
trigger
-
110
MHz:
Width
< 10
nsec,
scope
should
trigger
-
91
MHz:
Width
< 10
nsec,
scope
should
NOT
trigger
Set
frequency
to
7 MHz
and
INTERVAL
Width
to < 15
nsec.
Check:
-
74 MHz:
Width
<
15
nsec,
scope
should
trigger
-
61
MHz:
Width
< 15
nsec,
scope
should
NOT
trigger
12.3
Trigger
on
Interval
Width
>
Set
up the
DS0:
Turn
off
all
the
traces
except
CHI.
Set the
trigger:
-
Smart
/Complex
Trigger
ON
-
Trigger
Type
SINGLE
SOURCE
-
Width
Type
INTERVAL
WIDTH
-
Source
CHI
-
Coupl
AC
-
Slope
+
-
Level
zero
-
Delay
20%
Pretrigger
Set
the
input
of CHI:
-
Coupl
50
Q
-
Gain
.5
V/div
-
Var
Gain
1
-
Offset
zero
18