R&S SMA100B - Page 573

Remote control commands
R&S
®
SMA100B
573User Manual 1178.3834.02 ─ 09
SOURce1:FM1:DEViation:MODe TOT
SOURce1:FM1:DEViation:SUM 5000
// Query the deviation depth of modulation signal in the second path
SOURce1:FM2:DEViation?
// Response: 4000
// Combine the signals of both paths with fixed ratio
SOURce1:FM1:DEViation:MODe RAT
SOURce1:FM1:RATio 100
SOURce1:FM2:DEVIation 10000
// Query the deviation depth of modulation signal in the first path
SOURce1:AM1:DEViation?
// Response: 1000
SOURce1:FM1:STATe 1
SOURce1:FM2:STATe 1
Example: Using an external signal source
Alternatively configure the frequency modulation settings with an external modulation
signal.
// Reset the instrument to start from a defined state
*RST
// Set RF frequency and amplitude
SOURce1:FREQuency:CW 6000000000
SOURce1:POWer:LEVel:IMMediate:AMPLitude -25
// Configure the frequency modulation settings and switch FM on
SOURce1:FM1:SOURce EXT1
SOURce1:FM1:DEViation 5000
// Query the input sensitivity at the external modulation input
:SOURCe1:FM1:SENSitivity?
// Response: 1000
// since the voltage value for full modulation is 1V,
// the resulting sensitivity is precisely 5000 Hz/V.
// Switch on FM and RF signal output
SOURce1:FM1:STATe 1
OUTPut1:STATe 1
The following commands are available:
[:SOURce<hw>]:FM<ch>:STATe......................................................................................574
[:SOURce<hw>]:FM<ch>[:DEViation]...............................................................................574
[:SOURce<hw>]:FM<ch>:SOURce.................................................................................. 574
[:SOURce<hw>]:FM:DEViation:MODE............................................................................. 575
[:SOURce<hw>]:FM:DEViation:SUM................................................................................575
SOURce subsystem