Agilent X-Series Signal Generators SCPI Command Reference 85
Basic Function Commands
Vector Modulation Subsystem—N5172B/82B ([:SOURce]:IQ)
:OUTPut:IMPairments:AWGN:EBNO
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:EBNO <value>
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:EBNO?
This command allows the signal to noise ratio to be set using the Eb/No (energy per bit over noise
power density at the receiver) form. This requires the signal bit rate to be set properly.
(SNR)dB = (Eb/No)dB + 10log(bitRate/signalBandwidth)
*RST 0 dBm
Range –100 to 100 dBm
Key Entry Eb/No
:OUTPut:IMPairments:AWGN:IBWidth
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:IBWidth <value>
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:IBWidth?
This value determines the non- AUTO value of the noise integration bandwidth. This is the bandwidth
over which to sum the noise for the purposes of SNR (or Eb/No). Often, it is the symbol rate or chip
rate of the signal in question.
*RST 1 Hz
Range 1 Hz–200 MHz
Key Entry Integration Bandwidth
:OUTPut:IMPairments:AWGN:IBWidth:AUTO
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:IBWidth:AUTO ON|OFF|1|0
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:IBWidth:AUTO?
This is a new feature that allows the currently ON application to control the noise integration
bandwidth. For applications that have no clear noise integration bandwidth, such as Dual Arb, the
auto mode is effectively OFF.
*RST 1
Key Entry Integration Bandwidth Manual Auto
:OUTPut:IMPairments:AWGN:MUX SUM|SIGNal|NOISe
Supported N5172B with Option 653 or 655, N5182B with Option 656 or 657
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:MUX SUM|SIGNal|NOISe
[:SOURce]:IQ:OUTPut:IMPairments:AWGN:MUX?
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