[opendtv] Re: STATEWIDE DTV TEST
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 17 Dec 2008 17:18:32 -0800
San Diego stations are scheduled for a demo tonight at 6:58 p.m. Not sure
if I will tear myself away from work to look into it.
However, for the lion's share of cable customers, information on an analog
channel won't get through. Analog cable signals come out of digital input
here. I even have recent data that establishes this.
The other night, I was watching KFMB-TV (CBS) on cable tv. I noticed an
interfering signal on the same channel (either the cable within the house or
the television set, and I've been meaning to climb under this house to put
in a modern cable run.)
Then, I noticed that the interfering analog signal was leading the cable
feed by 5-6 seconds: bold graphics for "Marley & Me" ads would appear during
the blackouts for the surrounding program. Pure and simple, there is only
one possible explanation: the analog cable television signal is derived from
digital input, and the analog-digital encoding (at the station, about 4
seconds) and the digital-analog 'decoding' at the cable head-end was causing
the temporal delta.
I'm not sure why this problem showed up in the last week, but I suspect that
the aging cable run was compromised more than normal by water migration;
'global warming' has caused cold winter rains, and it was raining Monday
night.
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de Tom Barry
Enviado el: Wednesday, December 17, 2008 4:54 PM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: STATEWIDE DTV TEST
dan -
Was this one of those tests where the analog TV would display a message?
If so, I heard on other similar tests the local cable companies
foolishly passed through that analog message and thus received the lions
share of the calls. Did that also happen in Nevada?
- Tom
dan.grimes@xxxxxxxx wrote:
> Nevada Broadcasters are doing a statewide test today where they are
> turning off the analog transmitters for several minutes at various times
> during the day here in Nevada. This is some early communication I
> received from the Nevada Broadcastors Association about the results:
>
> We would like to share the data that we have thus far received, and the
> data that we have thus far ascertained from the 6:30 AM test.
>
> 1. In a sampling of calls to the stations, receptionists indicated that
> most did not receive any calls, or if they did -- just a few.
>
> 2. As of 10:15 AM, the NBA office had received 8 telephone calls that
> have or will be referred to a station engineer.
>
> 3. ICT Group documents a total of 251 calls were received statewide.
>
> 4. It should come as no surprise that the number one concern registered
> on the call center was ANTENNA.
>
> 5. The number two concern registered on the call center was COUPON.
>
> We will continue to monitor and report to you.
>
> Bob Fisher and Adam Sandler
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