[time-nuts] Pulling a signal from DirecTV
SAIDJACK at aol.com
SAIDJACK at aol.com
Sat May 10 21:51:53 UTC 2008
Yes, the frequency accuracy is not very good.
We generated 27MHz out of the CVBS coming from a Philips Directv STB.
To do this, just hook up an NXP video decoder to the CVBS/YC signal (such as
SAA7111, SAA7114 etc) and that will give you a line-locked 27MHz.
Significant medium term drift, measurable on 1/10Hz if I remember correctly.
Jumps every so often ( a couple of times per hour) to re-sync.
Depends also on the algorithms and PLL inside the STB, different vendor's
units all behave differently from what I could see.
bye,
Said
In a message dated 5/9/2008 08:42:08 Pacific Daylight Time, novick at nist.gov
writes:
Does anyone have experience getting a measurable frequency (in phase with
the broadcast FQ) from a consumer DirecTV box?
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