Hello Peter,
On 1/22/07, Peter NAYLER <peter.nayler@st.com> wrote:
> Manu,
>
> The chip you have is from a very early batch. The fault you are probably
> seeing is a race condition. This problem was completely eliminated in June
> (before we launched mass production). The sample you have is from a
> preproduction engineering batch (not for commercial sale). The antidote is
> to obtain a new card from KNC1 with a later batch number (your IC probably
> has C1L marked at the top, get one with C2L to be sure or > MLT 22 624)...
>
> The symptoms are as follows.
>
> The IC performs perfectly in DVB-S modes (all modes, all symbol rates).
DVB-S i am getting continuously ANALOG carrier (i have been trying a
bit hard now to get a LOCK on DVB-S as well now, you can see the same
from the log that i sent, messages.txt) .. once i was getting quite
good DVB-S locks , but it all went away as i mentioned after i
switched OFF the machine for a while..
> When in DVB-S2 depending on temperature, supply voltage and carrier to noise
> ratio the device may lose either FEC lock OR the FEC may remain locked but
> the packet delineator (and thus transport stream) outputs errors.
> Heating or cooling the device (say with freezer spray / hair drier) will
> bring the device back to correct operation (you may need to relaunch an
> acquisition).
>
> If a blast of hot or cold does not solve your problems let me know.
>
I have a fan over the chip after you mentioned the heating up of the
same earlier .. the room is quite cold also as well as the surrounding
temperature as well .. It would be less than 20 C on the chip.
> Regards Peter
>
thanks,
manu