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Sweep Operation
Setting sweep parameters 6
Menus for setting up the range, time (sweep rate), type (continuous, triggered, etc.)
spacing (lin/log) and marker position are all accessed from this screen using the
appropriate soft key. Sweep mode itself is turned on and off with alternate presses of the
on/off soft key; sweep can also be turned on by the sweep soft key on the MODE
screen.
On multi-channel instruments two or more channels can be swept at once. The channels
to be swept are set on or off by selecting them in turn with the appropriate SETUP key
and then using the on/off soft key of the SWEEP SETUP screen.
On all the following menus, pressing the done soft key returns the display to this
SWEEP SETUP screen.
Sweep Range
Pressing the range… soft key calls the SWEEP RANGE screen.
SWEEP RANGE:
start 100.0 kHz
stop 10.00 MHz
centr/span done
The maximum sweep range for all waveforms is 1 mHz to 40 MHz, including triangle,
ramp and square wave (which have different limits in unswept operation).
Sweep range can be defined by start and stop frequencies or in terms of a centre
frequency and span. start and stop soft keys permit the two end points of the
sweep to be set directly from the keyboard or by using the rotary control. The start
frequency must be lower than the stop frequency (but see Sweep type below for selecting
sweep direction).
Pressing the centr/span soft key changes the screen to permit entry in terms of
centre frequency and sweep span about that frequency; pressing the start/stop soft
key on that screen returns the display to the start and stop frequency form of entry.
Note that when the sweep is displayed in terms of centre frequency and span the span will
always be the exact difference between start and stop frequencies but the centre
frequency shown will be that of the frequency step nearest the true centre frequency, as
described above.
Sweep Time
Pressing the time… soft key calls the SWEEP TIME screen.
SWEEP TIME:
0.01
0 sec
done
The sweep time can be set from 1 ms to 999 s with 4 digit resolution by direct keyboard
entry or by using the rotary control.
6-3
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