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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: GPS Signals Accurate Now!!! |
| From: | "f5maf" <[email protected]> |
| Date: | Thu, 4 May 2000 22:37:34 +0200 |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
|
Be carrful some time on EOM board ( TRIMBLE)
the output PPS is open collector , you must use a 1K resistor (in
pull up).
Normally PPS is automatic, any command.
Best 73 marc F5MAF
-----Message d'origine----- >While we are discussing GPS, I have a question
for all of you.De : Alberto di Bene <[email protected]> À : [email protected] <[email protected]> Date : jeudi 4 mai 2000 17:44 Objet : Re: LF: GPS Signals Accurate Now!!! >I bought a few months ago an OEM 5000 GPS board, made >circa 1993 by Magellan, because someone had told me that >on the interface there were available the 1 pps signal derived >from the received signals from the satellites, with the accuracy >and stability of their Cesium clocks, +/- the SA. > >I was intending to homebrew something similar to the Shera >project appeared in a past issue of QST. > >I have been unable to find that 1 pps signal, however. It just seems >not to be present on the interface. But there is a hope. >A few pins do not have signal on them, as seen on the 'scope, >but they have traces on the PCB leading somewhere. My last hope >is that the 1 pps signal must be enabled by some command to the >GPS unit. > >Can anybody shed some light on this ? Anybody on this list that >has experience with the Magellan OM 5000 ? Thanks for any advice. > >Alberto I2PHD > > > > |
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