Rohde & Schwarz SMU200A - Page 591

Remote Control Commands
R&S
®
SMU200A
571Operating Manual 1007.9845.32 ─ 15
[:SOURce<hw>]:AWGN:BWIDth:NOISe?
Queries the real noise bandwidth.
This command is available for modes Additive Noise and Noise Only (SOUR:AWGN:MODE
ADD|ONLY).
Return values:
float<Noise>
AWGN:BWID:NOIS?
queries the noise bandwidth.
Example:
Query onlyUsage:
[:SOURce<hw>]:AWGN:BWIDth:RATio <Ratio>
This command is available for modes Additive Noise and Noise Only
(SOUR:AWGN:MODE ADD|ONLY).
This command sets the ratio of minimum real noise bandwidth to system bandwidth.
The overall bandwidth is calculated as follow and may not exceed 80 MHz:
Overall Bandwidth = System BW x Minimum Noise/System BW Ratio
Therefore, the available value range depends on the selected system bandwidth.
Parameters:
float
1.0 to Max
0.1
1
<Ratio>
Range:
Increment:
*RST:
AWGN:BWID:RAT 2
sets a minimum noise/system bandwidth ratio of 2.
Example:
[:SOURce<hw>]:AWGN:CNRatio <Cnratio>
This command sets the carrier/interferer ratio. The value range depends on the selected
AWGN mode (AWGN:MODE ADD|ONLY|CW).
●
"Reference Mode Carrier" (AWGN:POW:RMOD CARRier)
The noise level is adjusted to the set C/N ratio and the carrier level is kept constant.
●
"Reference Mode Noise" (AWGN:POW:RMOD NOISe)
The carrier level is adjusted to the set C/N ratio and the noise level is kept constant.
This command is available for modes "Additive Noise" and "CW Interferer"
(SOUR:AWGN:MODE ADD|CW).
SOURce Subsystem