Texas Instruments GC5325, Руководство пользователя

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Using the Software
Figure 12. CCDF
Figure 13. Autocfr_gui Window
The ABS time series plot also denotes the location of the sync A input signal (red upside down
triangle) used by the GC5325 to capture data for DPD. A suitable time is found by the
GC5325EVMGUI automatically and must be located in a region with active data (not during the zero
time).
6. If the Auto Filter option in the CFR Setup were chosen, the Autocfr_gui window ( Figure 13 ) opens:
The Autocfr_gui is a fast, simple method to design the CFR cancellation filter based on the spectrum of
the input signal. The CFR filter has approximately the same spectral mask as the input signal, so that the
noise energy generated by peak cancellation remains in band. The Autocfr_gui generates a CFR filter to
match the input spectrum the first time it loads. If this looks acceptable, no other adjustments are
necessary. Three main control values can adjust the spectral shape of the filter:
13 SLWU063F – April 2009 – Revised April 2011 GC5325 System Evaluation Kit
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