Hi all, I am now working on a DVB-T set top box project and using TDA10046A + TCL tuner (TD1316 compatible) as DVB-T frontend. The frontend driver is ported from linux kernel 2.6. When I use some software to scan the channel available in Sydney, I found our frontend module performs very bad during scanning to 2 frequencies, and here are some brief results: 1) ABC @ VHF 12 (226.500 MHz) - BER = 0, UNC = 0 2) Seven @ VHF 6 (177.500 MHz) - BER = 0, UNC = 0 3) Nine @ VHF 8 (191.625 MHz) - BER ~0x6000, UNC = 0 4) Ten @ VHF 11 (219.500 MHz) - BER = 0, UNC = 0 5) SBS @ UHF 34 (571.500 MHz) - BER = 0, UNC = 0 6) D44 @ UHF 35 (578.500 MHz) - BER ~0x60000, UNC = 0 The BER of 2 frequencies reported from the test software is extremely high (compared to the other frequencies). When I force to play the content from these 2 frequencies, the video and audio has different level of corruption. But when I move the system to another place, all channels can be scanned with a BER = 0. So I just suspect it may be due to the AGC of both the tuner (TCL) and demod chip (TDA10046). But I just tried many combinations to test/check the AGC configuration but no luck. Could anybody shed some light on this issue for me? Please help. Thanks. Best regards, Lo Chun Chung (Chung) ECE-DHT@ASTRI HK. This message (including any attachments) is for the named addressee(s)'s use only. It may contain sensitive, confidential, private proprietary or legally privileged information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. Any use, disclosure, copying, or distribution of this message and/or any attachments is strictly prohibited. _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
