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SWEEP
3-26
Sweep control
(8) The Sweep Control screen displayed is similar to that shown in Fig. 3-20 below. This is used
to perform the sweeping operation.
B3911
Fig. 3-20 Sweep control screen in sweep mode (with the B source coupled to the A source)
(9) Enter the sweep start and stop frequencies using the
[Start Freq]
and
[Stop Freq]
keys.
(10) Press
[Step Size]
and enter the step size in the range 1 Hz to the instrument maximum
frequency, to a resolution of 1 Hz.
(11) Press
[Step Time]
and enter the step time in the range 50 ms to 10 s to a resolution of 1 ms.
(12) To start the sweep press
[Start Sweep].
The key changes its function to
[Stop Sweep]
and
Sweep Status
changes from
WAITING FOR TRIGGER
to
SWEEPING
. The displayed
Sweep
Freq
changes to show the progress of the sweep.
(13) The sweep can be stopped at any time by pressing
[Stop Sweep].
This causes the key
function to change to
[Continue Sweep]
and
Sweep Status
changes to
PAUSED
.
(14) Whilst the sweep is paused you can adjust the frequency by selecting
[Sweep Freq]
, then
using the control knob to look at a particular frequency of interest. Pressing
[Transfer]
followed by
[Continue Sweep]
causes the sweep to continue from your adjusted frequency.
Otherwise simply pressing
[Continue Sweep]
restarts the sweep from where it was paused.
Pressing
[Reset Sweep]
discontinues the sweep and resets it to the start frequency.
(15) At the end of a single sweep, the stop frequency is shown and the key function changes to
[Start Sweep]
with
SWEEP COMPLETE
displayed. For continuous sweep, the sweep
automatically recommences from the start frequency.
(16) To change the sweep mode, press the
[Sweep Mode]
key which returns you to the
Carrier
Sweep Mode
menu.