There is a master reset in the units that should be done when moving the units any considerable distance. It will eventually find itself but takes considerably longer if you don't do the reset. Without doing that it's trying to go by it's last collected almanac. On my units it's a matter of turning the unit off off, flipping a dip switch, turning it on and waiting for a message to tell you to turn the power off and put the switch back. After that it will start collecting birds within a very few minutes and probably have them all within about 15 minutes.
Burt, K6OQK At 09:00 AM 11/18/2007, you wrote: >From: "John Miles" <[EMAIL PROTECTED]> >Subject: [time-nuts] Datum 9390 Rb phase noise >To: "Discussion of precise time and frequency measurement" > <[email protected]> >Message-ID: <[EMAIL PROTECTED]> >Content-Type: text/plain; charset="us-ascii" > >Well, I bought the other Datum 9390 that was for sale at the time Mike >posted this message (eBay 260177272556), and it's certainly an impressive >box of stuff for $150. There is an Efratom Rb module, a couple of power >supplies, and a bunch of cards with a wirewrapped(!) back plane. > >I hooked up an antenna and it's reporting '1 USABLE SATELLITE' so far, so I >guess there's not much wrong with it if anything. The last-known GPS >location corresponds to "Cavium Networks HQ" in Google Earth, in Mountain >View, CA. The rubidium oscillator works and appears to be in calibration. > >The only fly in the ointment is the phase noise at the 10 MHz output: >http://www.thegleam.com/ke5fx/compare.gif > >Is -120 dBc/Hz par for the course for Efratom FRS-C rubidium modules, or is >there likely to be a problem with this one? > >-- john, KE5FX Burt I. Weiner Associates Broadcast Technical Services Glendale, California U.S.A. [EMAIL PROTECTED] K6OQK _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
