Remote Control Commands
R&S
®
SMA100B
448
User Manual 1178.3834.02 ─ 03
●
The keyword
[:FREQuency]
can be omitted, then the commands are SCPI-com-
pliant.
●
To activate an RF sweep mode, use the following commands:
–
RF frequency sweep:
SOURce:FREQuency:MODE SWEep
(
SOURce:FREQuency:MODE CW
(off))
–
RF level sweep:
SOURce:POWer:MODE SWEep
(
SOURce:POWer:MODE CW
(off))
●
All sweeps, including the LF sweep, can be set independently of each other.
For detailed information on the sweep modes and the triggering, see
nal Generation and Triggering in the Sweep and List Modes"
Example: Setup an RF frequency or power sweep
The following example shows a command sequence to set up an RF frequency sweep,
triggered by the execute command. For an RF power sweep, replace
FREQuency
in
the
SWEep
commands with
POWer
.
Exceptions are the power spacing (defined with
LINear
only) and the power step
width (defined with
LOGarithmic
only).
// Reset the instrument to start from an initial state
//
Switch off display update to improve performance
// (especially with short dwell times)
// Set the sweep mode (first two commands) and the sweep range
// Select linear spacing
// Select the waveform shape for the frequency sweep
*RST; *CLS
SYSTem:DISPlay:UPDate OFF
TRIGger1:FSWeep:SOURce SINGle
SOURce1:SWEep:FREQuency:MODE AUTO
SOURce1:FREQuency:SPAN 300 MHz
SOURce1:FREQuency:CENTer 200 MHz
// Alternatively use
// SOURce1:FREQuency:STARt 50 MHz
// SOURce1:FREQuency:STOP 350 MHz
SOURce1:SWEep:FREQuency:SPACing LINear
SOURce1:SWEep:FREQuency:SHAPe SAWTooth
// Activate change to start frequency while waiting for next trigger
// Prerequisites: sweep mode single and sweep waveform sawtooth
SOURce1:SWEep:FREQuency:RETRace 1
// Alternatively reset all sweeps to their initial value
SOURce1:SWEep:RESet:ALL
// Set the step width and dwell time
SOURce1:SWEep:FREQuency:STEP:LINear 1 MHz
// Alternatively set the number of steps, then the sweep step width is
// set automatically
SOURce1:SWEep:FREQuency:POINts 301
SOURce Subsystem
