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This screen allows the bunch by bunch filters to be configured. Normally the shape of the filter is automatically configured from the :CYCLECYCLES_S, :LENGTH_S, :PHASE_S settings, but the FIR can be written to :TAPS_S instead if :USEWF_S is set to "Waveform".
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| Name | PV | Description |
|---|---|---|
| FIR freq/size | :FIR:n:CYCLECYCLES_S, :FIR:n:LENGTH_S | These two determine the fundamental shape of the FIR, which is a sine wave with :FIR:n:CYCLECYCLES_S cycles in :FIR:n:LENGTH_S samples. These two numbers need to be adjusted so that the tune frequency is comfortably close to the ratio cycles/length. |
| Phase | :FIR:n:PHASE_S | This adjust the phase of the FIR and so determines the feedback phase. |
| Setup | :FIR:n:USEWF_S | Can be either "Settings" or "Waveform". If this is set to "Waveform" then the settings above are ignored and instead :FIR:n:TAPS_S is used to define the filter. |
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