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.
Togo 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
qAuto (Automatic)–The output sweeps be-
tween the specified list start and stop indexes,
dwelling at each list index for the specified
dwell time.
qExternal–The output sweep recurs when trig-
gered by an external TTL-compatible clock
pulse to the rear panel AUX I/O connector.
qSingle (Trig)–Asingle output sweep starts
when the trigger key is pressed. If a sweep is
in progress when the key is pressed, it aborts
and resets.
qManual–(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 3-47LOCAL (FRONT SWEEP FREQUENCY
PANEL) OPERATION OPERATION