Agilent X-Series Signal Generators SCPI Command Reference 335
Arb Commands
Two Tone Subsystem–N5172B/82B ([:SOURce]:RADio:TTONe:ARB)
To configure the AWGN, refer to the following sections located in the Two Tone subsystem:
• To set the AWGN noise bandwidth, refer to “:NOISe:BANDwidth” on page 333.
• To set the carrier to noise ratio as the active function, refer to “:NOISe:CN” on page 335.
• To enable the AWGN, refer to “:NOISe[:STATe]” on page 338.
Range 1 Hz to 125 MHz (Minimum increment is .001 MHz)
*RST +1.00000000E+000
Key Entry Carrier Bandwidth
:NOISe:CN
Supported N5172B/82B with Option 403
[:SOURce]:RADio:TTONe:ARB:NOISe:CN <val><unit>
[:SOURce]:RADio:TTONe:ARB:NOISe:CN?
This command makes Carrier to Noise Ratio the active function. The value you enter sets noise power
as a ratio of carrier power to noise power (C/N). Carrier power equals the total modulated signal
power before noise is added. When you add noise, the power output from the signal generator does
not change; it is the sum of carrier power and the added noise power. You can apply noise in real
time while the waveform is playing.
To configure the AWGN, refer to the following sections located in the Two Tone subsystem:
• To set the AWGN noise bandwidth, refer to “:NOISe:BANDwidth” on page 333.
• To set the bandwidth over which the noise power is integrated for calculating the carrier to noise
ratio, refer to“:NOISe:CBWidth” on page 334.
• To enable the AWGN, refer to “:NOISe[:STATe]” on page 338.
*RST +0.00000000E+000
Key Entry Carrier to Noise Ratio
:NOISe:CNFormat
Supported N5172B/82B with Option 403
[:SOURce]:RADio:TTONe:ARB:NOISe:CNFormat CN|EBNO
[:SOURce]:RADio:TTONe: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.
Example
:RAD:TTON:ARB:NOIS:CNF EBNO
The preceding example sets the carrier to noise ratio format to E
b
N
o
.
Default Carrier to Noise Ratio Format C/N
Key Entry Carrier to Noise Ratio Format C/N E
b
/N
o
To Next Page
Loading...
Need help?
General
