[ntp:questions] Re: Naval Observatory Master Clock
dicky
abuse at hotmail.com
Mon Jul 11 04:42:25 UTC 2005
This is true, but I have difficulty in convincing my clients to use a Garmin eTrex as their sync source.
In a professional environment you have to sometimes look good as well as perform good.
Darryl.
David Schwartz wrote:
> "dicky" <abuse at hotmail.com> wrote in message
> news:42d1efff$0$5919$5a62ac22 at per-qv1-newsreader-01.iinet.net.au...
>
>
>>If it is time interval that you need to calibrate, and not time of day,
>>then I recommend that you get a GPS synchronisation reference receiver.
>>The accuracy of these sync sources are traceable to NIST, and are only one
>>step down from a caesium reference oscillator.
>>A caesium oscillator would cost you about $45k USD, a telco spec 10MHz GPS
>>derived oscillator can be bought for around $3k USD.
>
>
> GPS devices with time of day traceable to NIST that can give you one
> microsecond accuracy are available for about $150 or less. With a dedicated
> Pentium PC, you can get a timestamper that's accurate to 5 microseconds or
> so with very little difficulty.
>
> DS
>
>
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