On Thu, Apr 19, 2018 at 1:47 PM, Tom Koza <wb6...@gmail.com> wrote: > Hello Everyone, > > My name is Tom and my amateur callsign is WB6FYR, I'm a newcomer to this > group. > > I'm mainly interested in creating a reasonable 10mHz standard for my > various pieces of test equipment here at home. To that end I've purchased > and received an Ebay "Trimble Inside" GPSDO unit, described as model > 57963. No instructions or manual were included with the hardware. > > The unit has now been powered up for the past 18 hours with the GPS antenna > connected with a favorable outside view of the southern sky. I am however > uncertain if the hardware is GPS locked based on the two external ACT > status LEDs, the leftmost LED is solid yellow and the adjacent right LED is > rapidly flashing red. The 1pps LED is flashing once per second as expected.
Welcome Tom. This unit sounds very similar to the green-fronted BG7TBL device that I have and which seem to be popular on ebay etc right now. As Bryan suggested, your best bet is to get a serial cable and get Lady Heather. Assuming it detects the unit, a good thing to do is to get the serial terminal up and check the status. To do this, do: !t (this starts terminal emulator mode) F1 (turns off echo) If a series of 2 hex digits groups are scrolling by, do: TOD DI (This DIsables TimeOfDay output) This should give you a 'UCCM >' prompt. Try: SYST:STAT? which will print out the status display which will tell you if it is tracking the satellites, what the survey location is (it may need a new survey done) > > Can anyone point me to an online manual or explain the ACT status LEDs and > how to interpret those indications. I asked my ebay seller for the manual and eventually got a 4 page PDF of not very helpful Chinglish, most of which was on configuring the serial port. It's probably not worth the electrons to send but I can try and dig it out. There is a good thread on the eevblog forum but that seems to be down right now. There is a good write up at http://andybrown.me.uk/2016/11/12/gpsdo-ebay/ One question: did you power the unit on before attaching a decent outdoor antenna ? I had problems with mine with an indoor patch antenna (the Trimble is an old GPS receiver, has a small no. of channels and is not very sensitive compared to a modern unit) and it would turn most of the lights on after a while and stop working. These problems went away after I connected on outdoor antenna and powercycled the unit. Cheers, Tim _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.