Hi Hartmut, On Tue, 5 Dec 2006, Hartmut Hackmann wrote: > I assume the MT2060 is similar to the MT2050. In this case, the IF center > frequency is defined by the SAW filter on the board. The TDA10046 driver > currently supports 2 "direct" IF frequencies: 36.125MHz and 36.1667MHz. > IF you have a down converter like the tda9889, you can use either 5.1667MHz > or 4.0, 4.5, 5.0MHz depending on the bandwidth. > These can be chosen in the tda1004x_config structure. It is possible to add > other frequencies, but yneed to extend some tables. The equations are in the > datasheet. The MT2060 is, afaik the MT2050, not similar at all. MT2050 is an in-can tuner whereas the MT2060 is a silicon tuner. The IF1 offset Chun Chung Lo is asking for is the offset for the first IF. This offset is to have a better alignment when the signal is at down-converted to the second IF (around 36 MHz). You can find a calibration function in the reference driver from Microtune. You should have it, when you are working on a hw-ref-design. A simple why to do is to try all offsets (after having the demod locked) and afterwards take the one where the demod gave you the highest C/N. Patrick. _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
