I
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Sweep Keys
MANUAL
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SWEEP
MODE
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TRIG0
MODE
0
POINTS
pg46ab
Figure
12-l.
The Sweep Group
There are two sweep modes: analog (or ramp) and stepped. In analog sweep
mode, the duration of the forward-going portion of the sweep is controlled
and displayed. In stepped sweep mode, the dwell time per point is controlled
and displayed. The remainder of the cycle time depends on the trigger mode
selected, the number of bandswitches required, the time required for each
bandswitch, and retrace/settling times. In addition, there is a manual sweep
mode, in which the sweep position can be continuously adjusted over the
start/stop range as determined by the front panel (manual) control. Manual
sweep mode operates independently of whether analog or stepped mode is
selected.
The instrument has only one sweep generator, so both frequency sweep and
power sweep use the same sweep parameters. The SWEEP annunciator on the
left FREQUENCY display is lit on& while the instrument is actually sweeping.
12-2
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General