Thomas Kaiser wrote:
Suur Karu wrote:
> My Technotrend Connect C-1200 USB DVB-C adapter have problem
> to tunning to 170MHz (no signal at all), but instead of it I found
missing channels on frequency 178MHz (not listed in NIT table), but
with big disturbance in picture and not stable LOCK (not usable).
>
> dmesg:
> ttusb_init_controller: unknown STC version V 2.5, please report!
> ttusb_init_controller: dsp-version: 0.0
> DVB: registering new adapter (Technotrend/Hauppauge Nova-USB).
> DVB: registering frontend 1 (ST STV0297 DVB-C)...
> usbcore: registered new driver ttusb
If your device is using the philips tda1316 tuner, i think there is a
problem in setting the correct Band. 162 MHz and above should be band
2 (Mid-Band). But in dvbc_philips_tdm1316l_tuner_set_params band 1 is
set for frequencies below 200 MHz:
// determine charge pump
tuner_frequency = params->frequency;
if (tuner_frequency < 87000000) {return -EINVAL;}
else if (tuner_frequency < 130000000) {cp = 3; band = 1;}
else if (tuner_frequency < 160000000) {cp = 5; band = 1;}
else if (tuner_frequency < 200000000) {cp = 6; band = 1;} <<==
else if (tuner_frequency < 290000000) {cp = 3; band = 2;}
else if (tuner_frequency < 420000000) {cp = 5; band = 2;}
else if (tuner_frequency < 480000000) {cp = 6; band = 2;}
else if (tuner_frequency < 620000000) {cp = 3; band = 4;}
else if (tuner_frequency < 830000000) {cp = 5; band = 4;}
else if (tuner_frequency < 895000000) {cp = 7; band = 4;}
else {return -EINVAL;}
Try to change to 2:
else if (tuner_frequency < 200000000) {cp = 6; band = 2;}
Yes! This fixed tuning problem. Thank You!
Regards,
SK
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