Press Start Index to open the list sweep start index
parameter.
Press Stop Index to open the list sweep stop index
parameter.
Press Dwell Time to open the dwell-time-per-step
parameter.
Open the parameter you wish to change, then edit
the current value using the cursor control key or ro
-
tary data knob or enter a new value using the key
pad and appropriate terminator key. When you have
finished setting the open parameter, close it by
pressing its menu soft-key or by making another
menu selection.
To go to the List Sweep Trigger menu from this
menu, press Trigger . The trigger menu lets you se
-
lect a list sweep trigger.
Press Previous Menu to return to the main List
Sweep Menu display.
Selecting a
List Sweep
Trigger
There are four modes of sweep triggering in list
sweep frequency mode, each selectable from the
trigger menu. The following is a description of each
mode
q
Auto (Automatic)–The output sweeps be-
tween the specified list start and stop indexes,
dwelling at each list index for the specified
dwell time.
q
External–The output sweep recurs when trig
-
gered by an external TTL-compatible clock
pulse to the rear panel AUX I/O connector.
q
Single (Trig)–A single output sweep starts
when the trigger key is pressed. If a sweep is
in progress when the key is pressed, it aborts
and resets.
q
Manual–(list sweep default trigger mode) The
list index is incremented or decremented by
using the front panel cursor control key. The
list index can also be incremented using an ex
-
ternal trigger input. Each trigger increments
the list index by one.
681XXC OM 3-47
LOCAL (FRONT SWEEP FREQUENCY
PANEL) OPERATION OPERATION
