R&S SMA100B - Page 569

Remote control commands
R&S
®
SMA100B
569User Manual 1178.3834.02 ─ 09
Example: Perform chirp modulation
Using the internal pulse generator, the following command sequence configures a chirp
modulated RF signal.
// Reset the instrument to start from an initial state
*RST; *CLS
// Set the RF signal frequency and level
SOURce:FREQuency:CW 4000000000
SOURce:POWer:POWer: -25
// Configure the chirp modulation settings
// set the pulse parameters and the trigger mode
// query the commpression ratio
// activat RF signal output
// Trigger a continuous chirp modulated signal
SOURce:CHIRp:TRIGger:MODE AUTO
SOURce:CHIRp:DIRection UP
SOURce:CHIRp:PULSe:PERiod 0.00001
SOURce:CHIRp:PULSE:WIDTh 0.000008
SOURce:CHIRp:BANDwidth 2000
SOURce:CHIRp:COMPression:RATio?
// Response: 0.01
SOURce:CHIRp:STATe 1
OUTPut1:STATe 1
// Trigger a single chirp modulation signal
SOURce:CHIRp:TRIGger:MODE SING
SOURce:CHIRp:DIRection DOWN
SOURce:CHIRp:PULSe:PERiod 0.00002
SOURce:CHIRp:PULSE:WIDTh 0.000002
SOURce:CHIRp:BANDwidth 5000
SOURce:CHIRp:STATe 1
SOURce:CHIRp:TRIGger:IMMediate
// Alternatively configure the chirp modulation settings
// using an external pulse signal.
// Select the trigger mode, set the polarity of the external signal,
// select the impedance of the external pulse signal input
SOURce:CHIRp:TRIGger:MODE EXT
SOURce:CHIRp:TRIGger:EXTernal:POLarity NORMal
SOURce:CHIRp:TRIGger:EXTernal:IMPEDance G10K
SOURce:CHIRp:STATe 1
The following commands are available:
[:SOURce<hw>]:CHIRp:BANDwidth.................................................................................570
[:SOURce<hw>]:CHIRp:COMPression:RATio?..................................................................570
[:SOURce<hw>]:CHIRp:DIRection................................................................................... 570
[:SOURce<hw>]:CHIRp:PULSe:PERiod........................................................................... 570
[:SOURce<hw>]:CHIRp:PULSe:WIDTh............................................................................ 571
SOURce subsystem