Our sync issues were unrelated to our temperature issues. On Tue, Jan 26, 2016 at 10:31 AM, Andy Trimmell <[email protected]> wrote:
> The AP is not turning off by any means now that the temperature is above > freezing and we have them on their own PSU. It just wont track satellites > on this north side of the water tank. I’ve replaced it with the same > results. The other Aps actually have longer cable runs. > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Josh Baird > *Sent:* Tuesday, January 26, 2016 10:29 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] ePMP GPS woes > > > > I was just going to say that we have seen flaky sync (from > CMM/SyncInjectors/etc) with low voltages (below ~23V or so). I believe > Forrest concluded this in his tests as well. But, at 110ft, I wouldn't > expect a ton of voltage drop, so I'm not sure if this is your problem or > not. > > > > In any case, I would try boosting voltage to the AP's to see if that > corrects your problems. > > > > Josh > > > > On Tue, Jan 26, 2016 at 10:24 AM, Andy Trimmell <[email protected]> > wrote: > > Cable run for the packetflux syncpipe is about 6ft if that was your > question. > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Andy Trimmell > *Sent:* Tuesday, January 26, 2016 10:24 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] ePMP GPS woes > > > > 110 ft > > > > *From:* Af [mailto:[email protected] <[email protected]>] *On > Behalf Of *Josh Baird > *Sent:* Tuesday, January 26, 2016 10:23 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] ePMP GPS woes > > > > 25V at the bottom of the tower? How long is the cable run? > > > > On Tue, Jan 26, 2016 at 10:21 AM, Andy Trimmell <[email protected]> > wrote: > > We just put the 2 ePMPs are their own dedicated PSU. They’re PSU was > dialed to exactly 25V > > > > > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Josh Baird > *Sent:* Tuesday, January 26, 2016 10:21 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] ePMP GPS woes > > > > What power supply are you using for your CMM? Is it 24V or 29-30V? How > long are the cable runs? > > > > On Tue, Jan 26, 2016 at 10:16 AM, Andy Trimmell <[email protected]> > wrote: > > So we’ve come to the conclusion that even if you’re using CMM as your > timing source the AP still continues to use the onboard gps if its plugged > in. > > > > We have 2 Aps on the same water tower. Both using CMM for their timing. > Both of them also have their Cambium supplied GPS antenna plugged in > (emergencies). > > > > One AP is running 2.4.3 works fine with GPS antenna plugged in and using > CMM for timing. > > One AP is running 2.6 can’t see satellites because the tank is blocking > its view. Is on CMM but will not get timing from CMM no matter what I do. > > > > Obviously our next step is to climb the water tank and remove the GPS > antenna so it stops confusing itself but it’s too windy today to climb. > > > > If I’m using CMM for my timing why does it care about the cambium supplied > GPS antenna? It should be disabled when I switch it to CMM. I’ve put 2 new > Aps on it with same results. > > > > Conclusion: 2.6 is confused by having 2 timing sources even though you > choose one. If you’re using CMM for your timing for the love of all things > fluffy don’t plug in the Cambium supplied GPS antenna. > > > > > > >
