Selecting a
Sweep
Trigger
The 680XXB provides sweep triggering for step fre-
quency sweep and CW power sweep. The CW gener-
ator has three modes of sweep triggering, each
selectable from the trigger menu. The following is a
description of each mode.
Auto (Automatic)
–The sweep continually
sweeps from its start frequency or power level
to its stop frequency or power level with opti-
mal retrace time.
External
–The sweep recurs when triggered by
an external TTL-compatible clock pulse to the
rear panel
AUX I/O
connector.
Single
–A single sweep starts when the trigger
key is pressed. If a sweep is in progress when
the key is pressed, it aborts and resets.
To go to the Step Sweep Trigger menu (below) from
the Step Sweep Ramp menu, press
Trigger Menu
.
To select a sweep trigger mode, press its menu soft-
key. A message showing the sweep trigger mode se-
lected appears on the right side of frequency title
bar. When you are finished, press
Previous Menu
to return to the Step Sweep Ramp menu.
If you select the single sweep trigger mode, the
menu display adds the menu soft-key
Trig
. Press-
ing
Trig
starts a single sweep. If a single sweep is
in progress, pressing
Trig
causes the sweep to
abort and reset.
LOCAL (FRONT
SWEEP FREQUENCY
PANEL) OPERATION
OPERATION
680XXB OM
3-27
Summary of Contents for 680 B Series
Page 5: ......
Page 11: ...Figure 1 1 Series 680XXB Synthesized CW Generator...
