PSN-L Email List Message
Subject: Re: My error
From: ChrisAtUpw@.......
Date: Wed, 25 Apr 2007 10:34:32 EDT
In a message dated 2007/04/25, tchannel@.............. writes:
> I adjust my clock manually, often it is off by many seconds, I advance the
> clock to the next minute, and when the times match I push "okay" to reset my
> computer clock, to the correct time. Works fine unless I put in an extra
> minute. So instead of an adjustment of + 4 second I adjusted +64 seconds.
Hi Ted,
You can get details of time servers from
http://tf.nist.gov/timefreq/index.html
A good free server is AboutTime See
http://www.arachnoid.com/abouttime/
It sends you the correct time, your computer then 'pings' AboutTime,
which returns the signal immediatly, allowing your computer to measure and
correct for time delays on the line.
It is possible to buy a WWVB time receiver which automatically corrects
your computer or network.
Another alternative is to buy one of the Radio Corrected WWVB wall
clocks with a sweep second hand. You can fit a LED and a photocell on the dial
and sense the second hand for the minute marks. Bob does this Bobhelenmc
clure@....... - you need a large second hand to do this, or an Al foil extension. I am
not sure what software he uses.
I seem to remember that you can also buy the radio PCB and a computer
board to decode WWVB signals from Galleon at http://www.ntp-time-server.com/
These are produced in Germany for all radio time systems. I use a similar
system on DCF77 in Europe.
Regards,
Chris Chapman
In a me=
ssage dated 2007/04/25, tchannel@.............. writes:
I adjust my clock manually, oft=
en it is off by many seconds, I advance the clock to the next minute, and wh=
en the times match I push "okay" to reset my computer clock, to the correct=20=
time. Works fine unless I put in an extra minute. So instead of=20=
an adjustment of + 4 second I adjusted +64 seconds.
Hi Ted,
You can get details of time servers fro=
m http://tf.nist.gov/timefreq/index.html
A good free server is AboutTime See http://www.arachnoid.com/aboutt=
ime/
It sends you the correct time, your com=
puter then 'pings' AboutTime, which returns the signal immediatly, allowing=20=
your computer to measure and correct for time delays on the line.
It is possible to buy a WWVB time receiver which automati=
cally corrects your computer or network.
Another alternative is to buy one of th=
e Radio Corrected WWVB wall clocks with a sweep second hand. You can fit a L=
ED and a photocell on the dial and sense the second hand for the minute mark=
s. Bob does this Bobhelenmcclure@....... - you need a large second hand to d=
o this, or an Al foil extension. I am not sure what software he uses.
I seem to remember that you can also bu=
y the radio PCB and a computer board to decode WWVB signals from Galleon at=20=
http://www.ntp-time-server.com/ These are produced in Germany for all radio=20=
time systems. I use a similar system on DCF77 in Europe.
Regards,
Chris Chapman
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