Agilent X-Series Signal Generators SCPI Command Reference 257
Arb Commands
Dmodulation Subsystem–N5172B/82B with Option 431 ([:SOURce]:RADio:DMODulation:ARB)
:RAD:DMOD:ARB:NOIS:CBR 5
The preceding example sets the carrier bit rate to 5 Mbps.
Default 2.000000000 Mbps
Range 1 bps to 999 Mbps
Key Entry Carrier Bit Rate
:NOISe:CBWidth
Supported N5172B/82B with Option 431 and 403
[:SOURce]:RADio:DMODulation:ARB:NOISe:CBWidth <1Hz-125MHz>
[:SOURce]:RADio:DMODulation:ARB:NOISe:CBWidth?
This command selects the carrier bandwidth over which the AWGN (additive white gaussian noise) is
applied. The noise power will be integrated over the selected bandwidth for the purposes of
calculating C/N (carrier to noise ratio). The carrier bandwidth is typically the symbol rate. For more
information refer to “:NOISe[:STATe]” on page 260.
*RST 1.000000000 MHz
Range 1 Hz to 125 MHz
Key Entry Carrier Bandwidth
:NOISe:CN
Supported N5172B/82B with Option 431 and 403
[:SOURce]:RADio:DMODulation:ARB:NOISe:CN <-100dB - 100dB>
[:SOURce]:RADio:DMODulation:ARB:NOISe:CN?
This command sets the carrier to noise ratio in dB. The carrier power is defined as the total
modulated signal power without noise power added. The noise power is applied over the specified
bandwidth of the carrier signal. For more information, refer to the “:NOISe:CBWidth” command.
Example
:RAD:ARB:NOIS:CN 50DB
The preceding example sets the carrier to noise ratio to 50 dB.
*RST +0.00000000E+000
Key Entry Carrier to Noise Ratio
:NOISe:CNFormat
Supported N5172B/82B with Option 431 and 403
[:SOURce]:RADio:DMODulation:ARB:NOISe:CNFormat CN|EBNO
[:SOURce]:RADio:DMODulation:ARB:NOISe:CNFormat?
This command selects either the Carrier to Noise Ratio (C/N) or energy per bit over noise power
density at the receiver (E
b
/N
0
) as the variable controlling the ratio of carrier power to noise power in
the carrier bandwidth.
To Next Page
Loading...
Need help?
General
