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6 List Sequence Measurements
Source
Carrier Bandwidth
Allows you to specify the bandwidth over which the AWGN is applied. The carrier RMS power and the noise
power are integrated over the selected carrier bandwidth for the purpose of calculating carrier to noise
ratio (C/N).
Key Path
Source, Modulation Setup, ARB, ARB Setup, Real-Time AWGN Setup
Remote Command
:SOURce:RADio:ARB:NOISe:CBWidth <freq>
:SOURce:RADio:ARB:NOISe:CBWidth?
Example
:SOUR:RAD:ARB:NOIS:CBW 1.00 Hz
Dependencies
When a new waveform is selected for playback the settings contained within the associated
waveform header file are applied to the ARB. The AWGN carrier bandwidth is one of the values stored
within the header file. If the newly selected waveform file has an associated header file, the AWGN
carrier bandwidth is updated with the value from the header file. The AWGN carrier bandwidth will
remain unchanged if the newly selected waveform does not have an associated header file.
Min
1.00 Hz
Max
200.00 MHz
Initial S/W Revision
A.16.00
Noise Bandwidth
Allows you to specify the flat noise bandwidth of the real-time noise for an ARB waveform.
Key Path
Source, Modulation Setup, ARB, ARB Setup, Real-Time AWGN Setup
Remote Command
:SOURce:RADio:ARB:NOISe:BANDwidth <freq>
:SOURce:RADio:ARB:NOISe:BANDwidth?
Example
:SOUR:RAD:ARB:NOIS:BAND 1.00 Hz
Notes
Generally, flat noise bandwidth should be set slightly wider than the carrier bandwidth (typically 1.6
times wider)
Notes
Max Noise Bandwidth eauals 0.8 * Maximum ARB Sample Rate reported in HW capability
Dependencies
When a new waveform is selected for playback the settings contained within the associated
waveform header file are applied to the ARB. The AWGN carrier bandwidth is one of the values stored
within the header file. If the newly selected waveform file has an associated header file, the AWGN
carrier bandwidth is updated with the value from the header file. The AWGN carrier bandwidth will
remain unchanged if the newly selected waveform does not have an associated header file.
Preset
1.00 Hz
Min
1.00 Hz
Max
160.00 MHz
Initial S/W Revision
A.16.00
Power Control Mode
This setting offers four ways to control the RF output power when adding AWGN to a signal.
558
Sequence Analyzer User's & Programmer's Reference