[time-nuts] Jupiter GPS receiver
kirbybq at bellsouth.net
Wed Jan 4 21:59:13 EST 2006
I looked in my data and their spec sheet shows +/- 1 microsecond. But,
I beleive this was much better than that. I cannot find it, but I
beleive I seen a report where somebody compared the Jupiter and it was
in the 120 to 150 nanosecond class.
Alberto di Bene wrote:
>Poul-Henning Kamp wrote:
>>You need to time the 1PPS signal to get the precise time, the
>>serial timecode alone, NMEA or not, doesn't do it.
>Does anybody have reliable data on the jitter present on the 1pps signal
>of the Rockwell/Navman GPS boards ?
>I used in the past a 8-channel Motorola VP Oncore for a GPSDO, and it works very well.
>Now I am intending to build another, and bought a Rockwell TU30-D165-003
>(this is what is marked on the PCB). I haven't been able to find the exact
>specs of this model. What I would like to know is if its jitter is comparable
>to that of the VP Oncore or much worse. I don't care about NMEA problems,
>just the jitter is what interests me.
>I have also an old 6-channel Basic Oncore board. Would this be a better choice
>than the Rockwell? TNX
>73 Alberto I2PHD
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