Hi all, I have a TerraTec Cinergy T PCIe Dual card, with DRX-3916K and DRX-3913K frontends. I am thus using the drxk dvb-frontend driver. While trying to find the best antenna, position and amplification, I found that the statistics returned by the drxk driver look quite bad: $ femon -H 3 FE: DRXK DVB-T (DVBT) status SCVYL | signal 0% | snr 0% | ber 0 | unc 38822 | FE_HAS_LOCK status SCVYL | signal 0% | snr 0% | ber 0 | unc 38822 | FE_HAS_LOCK status SCVYL | signal 0% | snr 0% | ber 0 | unc 38822 | FE_HAS_LOCK This is with TV looking reasonably good, so these figures are not plausible. $ femon 10 FE: DRXK DVB-T (DVBT) status SCVYL | signal 00de | snr 00f5 | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 00f0 | snr 00f5 | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 0117 | snr 00f6 | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 00b6 | snr 00eb | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 00d1 | snr 00e7 | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 0073 | snr 00ea | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 00a3 | snr 00ee | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 00b5 | snr 00f4 | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 00ba | snr 00f3 | ber 00000000 | unc 000097a6 | FE_HAS_LOCK status SCVYL | signal 00be | snr 00f0 | ber 00000000 | unc 000097a6 | FE_HAS_LOCK Signal values are changing too much, snr is stable enough but way too low, ber is apparently unimplemented, and unc is never reset AFAICS (it started at 1 when the system started and has been only increasing since then.) On my previous card, unc was an instant measurement, not a cumulative value, not sure which is correct. I would like to see these statistics improved. I am willing to help, however the drxk driver is rather complex (at least to my eyes) and I do not have a datasheet so I wouldn't know where to start. Is there anyone who can work on this and/or provide some guidance? Thanks, -- Jean Delvare -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
