Agilent X-Series Signal Generators SCPI Command Reference 89
Basic Function Commands
Vector Modulation Subsystem—N5172B/82B ([:SOURce]:IQ)
SNR Selects Signal to Noise Ratio (SNR) to control the ratio of signal power to noise
power in the noise integration bandwidth.
EBNO Selects energy per chip over noise power density at the receiver (Ec/No) to control
the ratio of signal power to noise power in the noise integration bandwidth.
*RST SNR
Key Entry Signal to Noise Ratio Format
:OUTPut:IMPairments:AWGN[:STATe]
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
[:SOURce]:IQ:OUTPut:IMPairments:AWGN[:STATe] ON|OFF|1|0
[:SOURce]:IQ:OUTPut:IMPairments:AWGN[:STATe]?
This command enables or disables the additive white Gaussian noise.
*RST 0
Key Entry Real-Time AWGN On Off
:OUTPut:IMPairments:PHASe:NOISe:F1
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
[:SOURce]:IQ:OUTPut:IMPairments:PHASe:NOISe:F1 <value>
[:SOURce]:IQ:OUTPut:IMPairments:PHASe:NOISe:F1?
This command sets the desired start frequency offset of the flat phase noise. The actual value of f1
varies logarithmically depending on the value of the stop frequency (f2). As f2 increases in value, the
adjustment becomes coarser. The effect of this value can only be determined by examining the
graphic on the front panel or the actual output.
NOTE: This phase noise is added to the base phase noise of the instrument.
f1 must always be less than or equal to f2. Setting f1 higher than f2 will cause f2 to be set to the
value of f1.
*RST 1 kHz
Range 0 Hz to 77.50052449 MHz
Key Entry Desired Start Freq(F1)
:OUTPut:IMPairments:PHASe:NOISe:F2
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
[:SOURce]:IQ:OUTPut:IMPairments:PHASe:NOISe:F2 <value>
[:SOURce]:IQ:OUTPut:IMPairments:PHASe:NOISe:F2?
This command sets the desired stop frequency offset of the flat phase noise. The actual value of f2
varies logarithmically. As f2 increases in value, the adjustment becomes coarser. The effect of this
value can only be determined by examining the graphic on the front panel or the actual output.
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