調頻
設置TUNNER
ch_QAM0297E_SetParameter
設TunerStart==true
#if 0
 demod_d0297E_ScanFrequency( gsi_FrequncyKHz, gsi_SymbolRateBds, gsi_QamSize, gsi_SpectrumInverMode);  

 demod_d0297E_ScanFrequency( iTransponderFreq, iSymbolRate, cQamSize, iSpectrumInversion);

 CH_TUNER_DelayMSEL( TUNER_SETTLING_TIME );
 /* 6 MHz/Sec  SweepRate = 1000.0 * (UserSweepRate/Fs) */
#endif
放這兒效率高，但不穩(wěn)定，有時搜不到頻點