Real-time Noise features require connection to a signal generator with option 403.
Choice: On | Off
Default: Off
This cell enables or disables adding real-time, non-repeating additive white Gaussian noise (AWGN) to the carrier being modulated by the waveform being played.
On – enables the addition of Real-time Noise.
Off – disables the addition of Real-time Noise.
Range: –100 dB to 100 dB
Default: 20 dB
This cell selects the noise power to be applied to a waveform. The carrier power is defined as the total modulated signal power before noise power is added. The noise power is the in-channel noise power. A positive value makes C larger than N.
Range: 1 Hz to 80.0 MHz
Default: 16.25 MHz
Sets the carrier bandwidth. This should be the same as the bandwidth of the target carrier.
Range: 1 to 2
Default: 1
This cell displays the noise bandwidth factor. (Read-only).
: the Noise Bandwidth Factor adjusts the RF flat noise bandwidth to be either at least 0.8 times the sample rate for a bandwidth factor of 1, or 1.6 times the sample rate if the bandwidth factor is 2.
, noise can not be enabled if the Noise Bandwidth Factor is 2. Any oversampling in a waveform will effectively make the noise bandwidth that many times wider than the signal bandwidth.
The Noise Bandwidth is calculated as following:
The noise bandwidth is at least 0.8 * [ARB Sample Clock] * [Noise Bandwidth Factor]
This parameter is not available with all instrument model numbers and may be grayed out.
Range: 1 Hz to 100 MHz
Default: 1.0 Hz
This cell displays the noise bandwidth.
This parameter is not available with all instrument model numbers and may be grayed out.