Selecting a
CW Power
Sweep
Trigger
There are three modes of triggering provided for the
CW power sweep—automatic, external, and single.
The sweep trigger is selectable from the CW Level
Sweep Trigger menu. The following is a description
of each trigger mode.
Auto (Automatic)
–The CW power sweep con-
tinually sweeps from its start power level to
its stop power level with optimal retrace time.
External
–The CW power sweep recurs when
triggered by an external TTL-compatible clock
pulse to the rear panel
AUX I/O
connector.
Single
–A single CW power sweep starts when
the trigger key is pressed. If a sweep is in pro-
gress when the key is pressed, it aborts and re-
sets.
To go to the CW Level Sweep Trigger menu from the
CW Level Sweep Ramp menu, press
Trigger Menu
.
To select a CW power sweep trigger mode, press its
menu soft-key. A message showing the CW power
sweep trigger mode selected appears on the right
side of the level mode title bar.
If you select the single sweep trigger mode, the
menu display changes, adding the menu soft-key la-
beled
Trig
. Pressing
Trig
starts a single CW
power sweep. If a single CW power sweep is in pro-
gress, pressing
Trig
causes the sweep to abort and
reset.
Press
Previous Menu
to return to the CW Level
Sweep Ramp menu.
LOCAL (FRONT
POWER LEVEL
PANEL) OPERATION
SWEEP OPERATION
680XXB OM
3-43
Summary of Contents for 680 B Series
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