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2. Baseband |
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Choice: AUTO | 1 | 2 | 4 | 8 | 16 | 32 | 64
Default: AUTO
Double-click or use the drop-down menu to set the oversampling ratio.
The software automatically determines the Waveform Length value (number of points) based on the oversampling ratio. A larger oversampling ratio results in a more completely filtered image, but uses more waveform memory because it increases the number of waveform points. A smaller oversampling ratio reduces waveform file size, but also reduces performance. The setting automatically selects the optimized oversampling ratio for the current signal setup.
The oversampling ratio must be set to a value other than 1 in order to select a filter type. An oversampling ratio of 1 automatically selects as the filter type and makes associated filter parameters unavailable.
View the selected filter type and associated parameter.
Choice: None | Root Nyquist | Nyquist | Rectangle | Gaussian | EDGE
Default: Gaussian
Double-click or use the drop-down menu to select a baseband filter type.
If the oversampling ratio is set to 1, the filter type is automatically set to and the filter types and corresponding filter parameters are unavailable.
If the oversampling ratio is set to any other value, you can select one of the listed filter types and edit the associated parameters.
Default: 0.22
Change the Alpha parameter for Root Nyquist and Nyquist filters. This field is unavailable for other filter selections.
Default: 0.3
Change the BbT parameter for a Gaussian filter. This field is unavailable for other filter selections.
View the selected filter type and associated parameter.
Choice: None | Root Nyquist | Nyquist | Rectangle | Gaussian | EDGE
Default: EDGE
Double-click or use the drop-down menu to select a baseband filter type.
If the oversampling ratio is set to 1, the filter type is automatically set to and the filter types and corresponding filter parameters are unavailable.
If the oversampling ratio is set to any other value, you can select one of the listed filter types and edit the associated parameters.
Default: 0.22
Change the Alpha parameter for Root Nyquist and Nyquist filters. This field is unavailable for other filter selections.
Default: 0.3
Change the BbT parameter for a Gaussian filter. This field is unavailable for other filter selections.
Range: 10 to 100%
Default: 100%
Set the clipping (limit) level of the I/Q waveform before filtering. (100.0% = no clipping)
Range: 10 to 100%
Default: 100%
Set the clipping (limit) level of the I/Q waveform after filtering. (100.0% = no clipping)
View the waveform length, displayed in points. You cannot edit this cell. The software automatically sets this value.
Increasing the Number of Frames or the Oversampling Ratio, increases the waveform length.
If you build a waveform from multiple carriers, Waveform Length is specific to an individual carrier. If the carrier's Waveform Lengths are different, the shorter carriers' waveforms are repeated.
Range:
N5182B: –50 to 50 MHz
All other models: –25 to 25 MHz
Default: 0 Hz
Set the frequency offset of the carrier relative to the signal generator's frequency setting.
This parameter is coupled with the Oversampling Ratio.
Range: –70 to 0 dB
Default: 0 dB
Set the carrier's power relative to the signal generator's amplitude setting.
Range: 0 to 32767
Default: 0
Set the timing offset of the carrier. Timing offset values increment by 1 symbol.
Range: 0 to 359 degrees
Default: 0 degrees
Set the initial phase of the carrier.
Range: 0 to 32767
Default: 0
Sets the Data offset of the carrier.