356 Agilent X-Series Signal Generators SCPI Command Reference
Digital Signal Interface Module Commands
Digital Subsystem—Option 003 and 004 ([:SOURce])
:DIGital:DATA:INPut:NOISe:CBWidth
Supported N5172B/82B with option 004
:DIGital:DATA:INPut:NOISe:CBWidth <value><unit>
:DIGital:DATA:?
This command selects the carrier bandwidth over which the additive white gaussian noise (AWGN) is
applied. The carrier RMS power and the noise power will be integrated over the selected
carrier–bandwidth for the purposes of calculating carrier to noise ratio (C/N). The minimum
increment value is 0.001 Hz. For more information, refer to the “:DIGital:DATA:INPut:NOISe[:STATe]”
command and the “:DIGital:DATA:INPut:NOISe:BANDwidth”command.
*RST +1.00000000E+000
Range 1 Hz to 200 MHz
Key Entry Carrier Bandwidth
:DIGital:DATA:INPut:NOISe:CN
Supported N5172B/82B with option 004
:DIGital:DATA:INPut:NOISe:CN <value><unit>
:DIGital:DATA:INPut:NOISe:CN?
This command sets the carrier to noise ratio (C/N) 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 :DIGital:DATA:INPut:NOISe:CBWidth.
Example
:DIG:DATA:INP:NOIS:CN 50DB
The preceding example sets the carrier to noise ratio to 50 dB.
*RST +0.00000000E+000
Range –100 to 100 dB
Key Entry Carrier to Noise Ratio
:DIGital:DATA:INPut:NOISe:CNFormat
Supported N5172B/82B with option 004
:DIGital:DATA:INPut:NOISe:CNFormat CN|EBNO
:DIGital:DATA:INPut: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.
Example
:DIG:DATA:INP:NOIS:CNF EBNO
The preceding example sets the carrier to noise ratio format to E
b
N
o
. Set the E
b
N
o
value with the
:DIGital:DATA:INPut:NOISe:EBNO command.
To Next Page
Loading...
Need help?
General
