[time-nuts] US New Year countdown - accurate?

David I. Emery die at dieconsulting.com
Mon Jan 2 05:09:16 UTC 2012


On Sun, Jan 01, 2012 at 05:54:46PM -0800, J. Forster wrote:
> To me the ball drop/fireworks was different from the on-screen time on FOX
> by a few secnds.

	I was watching the media pool HD satellite feed on AMC-1 and
through a broadcast grade IRD (ex PBS Bitlink ) it appeared to be about
2 seconds slow relative to  my house NTP timing.   This would about
exactly match what I would expect for uplink encoder, satellite path,
and decoder delays.

	I would expect a TV station using that feed might add anywhere
from 1-6 seconds to the delay in their internal processing to OTA... and
a digital cable system might add further delay to that (couple of more
seconds at least).

	Real time TV these days is only RELATIVELY real time.


-- 
  Dave Emery N1PRE/AE, die at dieconsulting.com  DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in 
celebration of what could have been, but wasn't and is not to be now either."




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