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Selecting a
Sweep Range
Selecting a sweep range involves choosing a start
and a stop frequency for the frequency sweep. The
sweep range selection process is identical for the
analog sweep, step sweep, and manual sweep fre
-
quency modes. You can select a frequency sweep
range as follows:
q
Editing the current start and stop frequency
parameter values.
q
Entering new start and stop frequency pa
-
rameter values.
q
Selecting one of the preset sweep range pa
-
rameters (F1-F2, F3-F4, F5-dF,orF6-dF).
Editing the Current Start / Stop Frequencies
To edit the current sweep range, open either the
start or stop frequency parameter. In the display
above, Edit F1 opens the start frequency parame-
ter; Edit F2 opens the stop frequency parameter.
Edit the open frequency parameter using the cursor
control key or the rotary data knob. When you are
finished, close the open parameter by pressing its
menu edit soft-key or by making another menu se
-
lection.
Entering New Start / Stop Frequencies
To enter a new frequency sweep range, open either
the start or stop frequency parameter (press Edit F1
or Edit F2 ).
Enter a new frequency using the keypad and appro
-
priate terminator key. When you are finished, close
the open parameter by pressing its menu edit soft-
key or by making another menu selection.
681XXC OM 3-33
LOCAL (FRONT SWEEP FREQUENCY
PANEL) OPERATION OPERATION
RANGE
This error message is displayed
when (1) the analog sweep start fre
-
quency entered is greater than the
stop frequency, or (2) the dF value
entered results in a sweep outside
the range of the 681XXC. Entering
valid values will clear the error.