Front Panel
1.
VAR HOLDOFF
(Variable Holdoff)
-
Varies the amount of time the horizontal system waits
before beginning another sweep. This helps stabilize the display of some
waveforms.
The
holdoff time in the
MAX
position is at least
10
times greater than
NORM.
2.
SLOPE
(B
Trigger)
Selects either the positive (button out) or negative (button in) signal transi-
tion to trigger
B
sweep.
3.
P-P AUTOrrV LINE
Automatically determines the trigger level on repetitive signals of
20
Hz and
higher in
NON-STORE
and
500
Hz and higher in
STORE.
Initiates a base-
line reference trace in the absence of an adequate trigger signal.
If a TV signal is applied, the oscilloscope will trigger on
them line informa-
tion.
4.
NORM
(Normal Triggering Mode)
-
In
NON-STORE,
the
A
TRIGGER LEVEL
control sets the trigger point regardless of the trigger signal amplitude. The
oscilloscope does not automatically sweep without an adequate trigger
signal. This mode is useful for low frequency or low repetition rate signals.
In
STORE,
the last signal acquired is displayed until the next trigger occurs.
TV
FIELD
-
(Press
P-P AUTO
and
NORM
in at the same time.) This mode
sets the oscilloscope to trigger on television field (vertical sync) signals. The
A sweep will occur automatically in the absence of a trigger signal.
5.
LEVEL (A Trigger)
Selects the voltage level on the positive (or negative) signal transition) at
which the A trigger will occur.
6.
AEXTCOUPL
Selects the method of coupling the
EXT INPUT
signal:
AC
-
Capacitively couples (and blocks DC components) of the signal.
DC
-
Couples DC and all other signal components.
DC110
-
Couples all signal components and attenuates the external input
signal by a factor of
10.
2232
User Manual
-
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