[time-nuts] Lucent KS-24361/Z3812A GPSDO initial setup

Bob Stewart bob at evoria.net
Sat Oct 25 11:45:10 EDT 2014

Hi Anthony,
I'm pretty sure it does provide +5 to the antenna.  I didn't understand what I was seeing for quite some time yesterday, and it seemed like it was telling me it didn't see an antenna.  So, I pulled it off of the splitter and put it onto my second antenna.  After a bit, it saw some sats so I think it was driving it fine.  I put it back on my splitter and things were fine as well.  The thing that was confusing me was that the unit with the green ON light is the one you need to hook the PC to.  Use the J8-Diagnostic connector and Stewart's RS-422 to RS-232 adapter scheme.  
I didn't try it, but I assume a USB dongle wired appropriately would work, as well.  As I'm out of serial ports on the server and had to turn on the laptop to interface this, I'll probably try that experiment soon.

     From: Anthony Roby <aroby at antamy.com>
 To: Bob Stewart <bob at evoria.net>; Discussion of precise time and frequency measurement <time-nuts at febo.com> 
 Sent: Saturday, October 25, 2014 8:48 AM
 Subject: RE: [time-nuts] Lucent KS-24361/Z3812A GPSDO initial setup
Let us know how this is progressing. I am waiting on a TNC connector, so can't get mine up and running this weekend as planned.  I'll get my power supply sorted out and see if I can get SatStat connected.

Do you know if the GPS input provides a 5v bias to drive an antenna?



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