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3-23
Sweep operation
These commands allow you to configure the instrument as a swept carrier signal generator where
you define the start and stop frequencies, the step size and time per step. (Note that these
commands also appear under 'Carrier frequency'.) To make these commands operational they must
first be enabled by the CFRQ:MODE SWEPT command. For triggering methods, refer to 'Trigger
source' at the end of this section.
Sweeps may be linear or logarithmic. For linear sweeps set the step size in the range 1 Hz to the
instrument maximum frequency to a resolution of 1 Hz. For logarithmic sweeps set the step size in
the range of 0.01% to 50.00% to a resolution of 0.01%.
SWEEP
[not used alone]
:CFRQ
Optional command (may be omitted)
:START
Set Start Frequency
:STOP
Set Stop Frequency
:INC
Set Carrier Frequency sweep step size
Data type :
Decimal Numeric Program Data
Allowed suffices :
Any one of: GHZ, MHZ, KHZ or HZ
Default suffix :
HZ
:LOGINC
PCT
:TIME
Select time per sweep step
Data type :
Decimal Numeric Program Data
Allowed suffices :
MS, S
Default suffix :
MS
Example:
SWEEP:CFRQ:START 100KHZ;STOP 500KHZ;INC
100HZ;TIME 60MS
SWEEP:CFRQ?
Prepares message containing information on Carrier Frequency Sweep
settings in the following format:
:SWEEP:CFRQ:START <nr2>;STOP <nr2>;INC <nr2>;LOGINC
<nr2>;TIME <nr2>
Example: :SWEEP:CFRQ:START 1230000.0;STOP 1330000.0;INC
100.0;LOGINC 50.00;TIME 20.0