Rohde & Schwarz R&S SMB100B - Page 419

Remote control commands
R&S
®
SMB100B
419User Manual 1178.3711.02 ─ 08
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......................................................................................419
[:SOURce<hw>]:FM<ch>[:DEViation]...............................................................................420
[:SOURce<hw>]:FM<ch>:SOURce.................................................................................. 420
[:SOURce<hw>]:FM:DEViation:MODE............................................................................. 421
[:SOURce<hw>]:FM:DEViation:SUM................................................................................421
[:SOURce<hw>]:FM:RATio..............................................................................................421
[:SOURce<hw>]:FM:MODE.............................................................................................422
[:SOURce<hw>]:FM:SENSitivity?.....................................................................................422
[:SOURce<hw>]:FM<ch>:STATe <State>
Activates frequency modulation.
Suffix:
FM<ch>
.
1..2
determines the modulation signal channel.
Parameters:
<State> 1 | ON | 0 | OFF
*RST: 0
Example: See Example"Creating a frequency modulated RF signal"
on page 417.
Manual operation: See "State" on page 74
SOURce subsystem