Robert Schlabbach wrote: > From: "D. Ratner" <[EMAIL PROTECTED]> > > is there a utility out there that if given a > > frequency, it will scan for any usable data? > > > > In otherwords will check all polarities and symbol > > rates etc for data. > > All symbol rates? Let's see: The STV0299B has 20 bits for the symbol rate > setting, that's 1,048,576 possible symbol rates. Even if you spend only > 10ms checking each symbol rate, it'll take 3 hours to scan all symbol > rates. Add polarity and it'll be 6 hours. Add the 5 possible Viterbi FEC > rates and it'll take over a day... > > Also, for low symbol rates, you'll have to wait much longer for a signal > lock, it can sometimes take several seconds to lock. If you wait 10 seconds > on each possible combination of symbol rate, polarization and FEC rate, > you'll spend over a thousand days, i.e. over three years scanning just a > single frequency.
The Zarlink MT312 claims to support fast scanning for symbolrates. http://products.zarlink.com/product_profiles/MT312.htm Johannes -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
