From: "Andrew de Quincey" <[EMAIL PROTECTED]> > Now, I'm able to lock on to low symbol rate signals... > I've just managed it with a 4340000 symbol rate... > getting a REALLY good signal from it, but it took about 10 seconds > to tune (the current timeout is hardcoded to 2 seconds). The STV0299B > docs say it needs a certain number of symbols before being able to > get a lock...
That can't explain the long lock time. My card is locking to the 22000 and 27500 MBaud ASTRA transponders in less than 5ms. Since 4340 MBaud is about 1/5th to 1/6th of that, the demodulator would get the same amount of symbols in 5-6 times that, i.e. in 25-30ms. That's nowhere near 10 seconds. But have you checked the AFC reading after the demodulator was locked on? Low symbol rate transponders are using a much narrower frequency band than high symbol rate ones, and thus exact tuning may be much more important. A 1MHz offset may not be much in a 30MHz band, but it makes much more of a difference in a 5MHz band... If possible, try compensating the offset by adjusting the tuner PLL frequency as much as possible and see if/how that affects the lock times... Regards, -- Robert Schlabbach e-mail: [EMAIL PROTECTED] Berlin, Germany -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
