R&S SMA100B - Page 563

Remote control commands
R&S
®
SMA100B
563User Manual 1178.3834.02 ─ 09
Example: Using combined LF signals
Using the internal LF generators of both paths, the following command sequences con-
figure an amplitude modulated signal with determined deviations depths.
// Configure the AM modulation settings with combined LF signal sources
SOURce1:AM1:SOURce LF1
SOURce1:AM1:DEPTh:LINear 32
// Select the modulation signal source for the second path
SOURce1:AM2:SOURce LF2
// Combine the signals of both paths with fixed total deviation depth
SOURce1:AM1:DEViation:MODe TOT
SOURce1:AM1:DEPTh:SUM 60
// Query the deviation depth of modulation signal in the second path
SOURce1:AM2:DEPTh:LINear?
// Response: 28
// Combine the signals of both paths with fixed ratio
SOURce1:AM1:DEViation:MODe RAT
SOURce1:AM1:RATio 100
SOURce1:AM2:DEPTh:LINear 25
// Query the deviation depth of modulation signal in the first path
SOURce1:AM1:DEPTh:LINear?
// Response: 25
SOURce1:AM1:STATe 1
SOURce1:AM2:STATe 1
Example: Using an external signal source
Using an external signal source, you can additionally determine whether you want to
use only the AC component of the external modulation signal.
// Reset the instrument to start from a defined state
*RST
// Set frequency and amplitude
SOURce1:FREQuency:CW 6000000000
SOURce1:POWer:LEVel:IMMediate:AMPLitude -25
// Configure the amplitude modulation settings and turn on AM
SOURce1:AM1:SOURce EXT1
SOURce1:AM1:DEPTh 40
// Query the input sensitivity at the external modulation input
SOURCe1:AM1:SENSitivity?
// Response: 40
// Since the voltage value for full modulation is 1V,
// the resulting sensitivity is precisely 50%/V.
SOURce subsystem