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Set the time base:
-
Time/div
5
nsec/div
-
Interleaved
ON
Apply
sine wave signal
3
V p-p
of 100 MHz
to CHI.
Turn
to
INTERVAL
Width
>
and adjust width
to
25 nsec.
Check:
-
100 MHz:
Width
>
25 nsec,
scope should NOT trigger
-
44 MHz:
Width
>
25 nsec,
scope should NOT trigger
-
37 MHz:
Width
>
25 nsec,
scope should trigger
Set the
frequency
to
40 MHz and
INTERVAL Width
to
>
27.5 nsec.
Check:
-
40 MHz:
Width
>
27.5 nsec, scope should NOT trigger
-
33 MHz:
Width
>
27.5 nsec, scope should trigger
Repeat
the
above
test for CH2.
13
Time Base Accuracy
In
order
to
verify
the time
base, use a
sine wave
generator
of
1
MHz
with
a
frequency
accuracy
of
better
than
10
ppm
(for
example
Marconi 2019A).
Set
up
the DS0:
Turn off all
the traces except CHI.
Set the trigger:
-
SMART (COMPLEX) Trigger
OFF
-
Source
CHI
-
Coupl
DC
-
Mode
NORM
-
Slope
+
-
Delay
0%
-
Level
zero
19
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