SweepFrequency
bool SweepFrequency(float frequency, float picture);
fTuner.SweepFrequency(frequency, picture);
return fTuner.SweepFrequency(frequency, C_TUNER_NTSC_PICTURE_CARRIER / 100.0f);
return fTuner.SweepFrequency(frequency, C_TUNER_PAL_PICTURE_CARRIER / 100.0f);