Rohde & Schwarz SMBV100B - Page 798

Remote Control Commands
R&S
®
SMBV100B
796User Manual 1178.4460.02 ─ 03
// Response: -80
SOURce1:AWGN:POWer:NOISe:TOTal?
Example: Generating a CW interferer signal
The following example generates a CW interferer signal with specified target frequency
and level.
SOURce1:AWGN:MODE CW
SOURce1:AWGN:FREQuency:TARGet 20000000
SOURce1:AWGN:STATe ON
SOURce1:AWGN:FREQuency:RESult?
SOURce1:AWGN:POWer:RMODe CARRier
SOURce1:AWGN:CNRatio 10
SOURce1:AWGN:POWer:CARRier -80
// the Level display indicates the PEP of the carrier
// SOURce1:POWer:LEVel:IMMediate:AMPlitude?
// Response: -80
// Querry the power of the interfering signal
SOURce1:AWGN:POWer:NOISe?
// Response: -90
SOURce1:AWGN:POWer:SUM?
// Response: -79.5860731484178
SOURce1:AWGN:POWer:SUM:PEP?
// Response: -80
Example: Generating an additive noise signal
The following example shows how to adjust the AWGN settings to generate a signal
with the following characteristics:
●
The carrier signal is an uplink EUTRA/LTE signal with:
– "Channel Bandwidth = 1.4 GHz", i.e. "Occupied Bandwidth = 1.080 MHz"
– "RF Frequency = 1.950 GHz"
– "RF Level = -76 dBm"
●
Required is an SNR of 12.7 dB
SOURce1:FREQuency:CW 1950000000
SOURce1:POWer:LEVel:IMMediate:AMPlitude -76
SOURce1:AWGN:MODE ADD
// set the system bandwidht to the occupied bandwidth
SOURce1:AWGN:BWIDth 1080000
SOURce1:AWGN:BWIDth:RATio 1.5
SOURce1:AWGN:STATe ON
SOURce1:AWGN:BWIDth:NOISe?
// Response: 1620000
SOURce Subsystem