Rohde & Schwarz SMBV100A, Руководство по эксплуатации

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Remote Control Commands
R&S
®
SMBV100A
594 Operating Manual 1176.8016.02 ─ 17
Example: AWGN:CNR 10
sets a carrier/noise ratio of 10 dB.
Manual operation: See " Carrier/Noise Ratio / Signal/Noise Ratio " on page 312
[:SOURce<hw>]:AWGN:DISP:MODE <Mode>
Selects the display mode to Bseband or RF.
Parameters:
<Mode> RF | BB
*RST:
RF
Example: AWGN:DISP:MODE RF
sets the display mode to RF
Manual operation: See " Display Mode - AWGN " on page 311
[:SOURce<hw>]:AWGN:ENRatio <EnRatio>
In Additive Noise mode, sets the ratio of bit energy to noise power density.
Depending on the selected reference mode either the noise power (
AWGN:POW:RMOD
NOISe
) or the carrier power (
AWGN:POW:RMOD CARRier
) is adjusted to the set E
b
/N
0
ratio.
●
AWGN:POW:RMOD CARRier
the noise power is adjusted to the set E
b
/N
0
ratio and the carrier power is kept con-
stant.
●
AWGN:POW:RMOD NOISe
the carrier power is adjusted to the set E
b
/N
0
ratio and the noise power is kept con-
stant.
For Digital Standard signals, the bit rate used for calculation of E
b
/N
0
value from C/N
value is defined with command
SOUR:AWGN:BRAT.
For Custom Digital Mod signals the bit rate used for calculation of E
b
/N
0
value from
C/N value is determined by the selected standard (
SOURce:BB:DM:STANdard
) and
cannot be changed.
Parameters:
<EnRatio> float
Range:
-50 to depends on hardware
Increment: 0.01
*RST:
15.84
Default unit: dB
Example: AWGN:ENR 10
sets a ratio of bit energy to noise power density of 10 dB
Manual operation: See " E
b
/N
0
- AWGN " on page 313
SOURce Subsystem