[time-nuts] Z3801 misbehaving

Artek Manuals Manuals at ArtekManuals.com
Mon Feb 1 23:48:19 UTC 2016


John

What software are you running? Are  you are getting the receiver health 
status at the bottom of the status page?

Crank it back up and once the thing goes into HOLD check and tell me if 
the RCVR status says "err"

Dave


On 2/1/2016 9:52 AM, John Green wrote:
> After a couple of days of GPS lock, it went into holdover. I briefly
> powered it down and it attained lock again in about 15 minutes. But, a
> while later, it was back in holdover. I finally coaxed that Sager laptop
> into working and after connecting to it with genuine RS232, I still can't
> communicate with it. I get zip with Satstat. And, it isn't locking again
> either. So, while it will achieve GPS lock, it doesn't seem to want to stay
> locked. And, there is that troubling lack of communication. I am
> considering trying a different GPS receiver module. I understand that
> probably isn't smart unless I try one similar to the one in it. I
> understand that the internal processor talks to the GPS module and anything
> with a different command set will cause it to think the GPS has gone bad.
> At this point, it looks like my options are limited to buying a new, used
> one off eBay for $500, or going to the Thunderbolt, which I don't trust. I
> have an old desktop PC I am going to try just in case the laptop RS232
> voltages weren't up to snuff. And, I am going to try a different cable,
> just in case. It probably wouldn't hurt to exercise the RS232 jumpers
> either. Anything else I should try?
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-- 
Dave
Manuals at ArtekManuals.com
www.ArtekManuals.com


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