Hi it seems the GPS module is not working and I suspect the power supply is failing. After a few power cycles the unit started up and reported via rs232 that it could not communicate with the GPS receiver
The docxo still delivers great performance from an adev perspective and I have other gpsdo's so I'm going to defer any more work on this for the time being. The docxo is probably the most valuable part right now. It is far and away better than any of my other 10811's from an adev perspective. Right now I'm kind of glad no one bought my jackson labs fury GPSDO. I figure I got my money's worth from the Z3805 and my interest in time nuts pursuits has waned in recent years. Also I seem to recall this Z3805 loosing GPS lock during a lightning storm as well. (I recall some one else mentioned this issue with their Z3805.) Sent from my iPhone > On Sep 1, 2015, at 9:05 PM, Bob Benward <[email protected]> wrote: > > Can you communicate over RS232? Are you using the Z38xx software? What > does it say? > > Bob > >>>> -----Original Message----- >>>> From: time-nuts [mailto:[email protected]] On Behalf Of Mark >>>> Spencer >>>> Sent: Tuesday, September 01, 2015 12:54 PM >>>> To: [email protected] >>>> Subject: [time-nuts] Z3805 service information ? >>>> >>>> Hi, I realize this is a long shot but I'm curious if anyone has ever > come across >>>> any form of a service manual (or insight into a power on self test > routine) for >>>> the Z3805 gpsdo ? >>>> >>>> One of mine is not working properly after being power cycled. It works > well >>>> enough to blink the status lights on the front panel hence my request > for info >>>> about a possible power on self test routine. >>>> >>>> I'll likely start by confirming the power supply voltages using another > working >>>> unit as a guide and then swap parts with another working unit but > thought I >>>> would look for service information first. >>>> >>>> Thanks in advance for any help. >>>> >>>> With the exception of two ocxo's that have a dedicated battery backup >>>> system all my time nuts gear, computers, freezers, etc was power cycled >>>> during a two day power outage after a wind storm while I was on > vacation. I >>>> have a nice generator that sat un used in my garage (: >>>> >>>> Mark Spencer >>>> VE7AFZ >>>> >>>> _______________________________________________ >>>> 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. > > _______________________________________________ > 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. > _______________________________________________ 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.
