[opendtv] Re: Analog v Digital TV
- From: Barry Brown <barrysb@xxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Mon, 15 Jan 2007 11:53:33 -0500
On Jan 15, 2007, at 8:57 AM, Craig Birkmaier wrote:
Anything downstream in an ATSC transmission is error protection
with the sole purpose of trying to get the data in the files I
described above to the decoder in the receiver with the lowest
number of errors possible. IF you can receive the ATSC transmitted
bits perfectly, you can reconstruct the MPEG video stream at the
same level of accuracy, as a decoder that is connected to the
output of the encoder ( i.e. NO CHANNEL ERRORS).
What ATSC signal conditions, other than multi-path errors, would
cause some receivers to give an intermittent "Loss of Signal"
indication (might be loss of sync) where inserting 21 dB of
attenuation in the antenna connection corrects the problem? One
channel in my area is such a case. It is not the strongest or weakest
channel nor is there any indication of multi-path errors on analog
channels (not adjacent) either side of the problem child . In fact
one of the analogs is transmitted from the same tower as the DT channel.
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