On 16 Jan 2007 12:32:16 +0100, Jon K Hellan <[EMAIL PROTECTED]> wrote:
> Trimble has a new "GPS smart antenna" - Acutime Gold. > > Whilst the Acutime 2000 has an RS-422 to RS-232 conversion box, the > Acutime Gold comes with with an RS-422 to USB conversion box. It is > supposed to achieve at least the same accuracy using the TSIP protocol > (Palisade ntp driver) as the old Acutime 2000. > > I thought USB inevitably gave poorer precision than > RS-232. Apparently, I was wrong. How do they do it? I'll be interested in any responses to this: personally I think USB is a no-go on our platform, SunFire V210 with Solaris-8, and that Trimble have abandoned the NTP arena -- no mention of NTP in the Acutime Gold docs AFAIAA. For our purposes, using refclock_palisade, we have begged an Acutime 2000 with RS-422-to-RS-232 interface module (not RoHS compliant) to replace a Palisade ditto; the claimed accuracy of the event-triggered time is 320ns on the 2000 vs. the Palisade's 40ns, but the Gold is worse IIRC ... -- Ronan Flood <[EMAIL PROTECTED]> _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
