- Joined
- Jan 1, 2000
- Messages
- 16,239
- Reaction score
- 4,209
- Points
- 113
- Age
- 81
- My Satellite Setup
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Triple Dragon, Dreambox 8000, Echostar AD3000ip, TBS6522,6925,6983 PCie cards.
Gibertini 1.25m motorised dish driven by the AD3000, with either Inverto BU Quad or Norsat / XMW Ka LNBs . SMW 1.05m + 3 other dishes. Speccy: Promax HD Ranger+
- My Location
- The Flatlands of East Anglia
marcolan said:Thanks Llew- with the difference being only 0.5 seconds as you say, this could be accounted for by differences in demodulation/processing efficiency.
Did you by any chance also compare your TBS 6925 with freeview? And do you have a freeview TV rather than a DVB-T PC card to compare against?
I think if the MUX on 27.5w were being used to feed the freeview transmitters across the country the mux would be further ahead - at least 2-3 seconds - due to the buffering / error correction technology used in DVB-T these days usually adding 2-3 seconds lag on the transmission. I actually expected the 27.5w mux to be well ahead of DVB-T -unless the F15 is very slow at processing/demodulation?
1. I tested a Freeview TV ( A Goodmans 15" I have hooked up as a monitor in my set-up) against the DR.HD F15 (RCA into the PC's VLC via a video grabber). BBC1 3 seconds ahead of the 27.5W BBC Mux.
2. I then tested the Freeview TV BBC1 transmission against the 27.5W BBC Mux on my TBS 6925 card, using DVB Dream. Same delay, 3 seconds.
So as far as I can see, if we take any buffering delay of the Freeview signal into account, this would suggest the BBC Mux is way behind the Freeview transmissions proper. Maybe there's be a delay being introduced in the uplink to the satellite?
Can't make much sense of my earlier test result using the PCTV Nanostick (?)