Curious, cannot you generate sync with GLONASS only?
From: Ken Hohhof
Sent: Tuesday, December 31, 2019 5:01 PM
To: 'AnimalFarm Microwave Users Group'
Subject: Re: [AFMUG] mass GPS issues
Are you power cycling the whole Rack Injector? Doing a reboot? Or power
cycling the GPS source per Forrest’s instructions?
I assume power cycling the whole Rack Injector would also drop power to the GPS
source. Not sure about a reboot.
The ones I have fixed seem to be staying fixed. I had a Rack Injector that was
seeing only GLONASS satellites until its Syncbox was power cycled, now it
seems fine. Some people are reporting the problem seems to be resolving itself
over time, but I’ve seen no evidence of that.
The cnPulse (Cambium Sync UGPS) that I had to power cycle is also doing fine
now, no recurrence. I’m attaching the GPS Sync information from the AP. Some
of the GPS Receiver information like model and software rev might be useful to
Forrest for comparison.
From: AF <af-boun...@af.afmug.com> On Behalf Of Andreas Wiatowski
Sent: Tuesday, December 31, 2019 7:29 PM
To: AnimalFarm Microwave Users Group <af@af.afmug.com>
Subject: Re: [AFMUG] mass GPS issues
Thanks Forrest, let us know what you find. I can confirm that I have done the
power cycle on the Rack injectors....we have seen the same issue occur
again...feels like interference.
It has been suggested by some to switch to Autosync+Freerun to avoid loss of
client use...I guess it really depends on your networks reuse scheme.
Internet.
Phone.
TV.
Andreas Wiatowski
CEO/Founder
Silo
1-866-727-4138, ext 600
|
andr...@silo.ca
silo.ca
> On Dec 31, 2019, at 8:05 PM, Forrest Christian (List Account)
> <li...@packetflux.com> wrote:
>
> [EXTERNAL]
> Just an update/random informational message, a lot of which is pretty obvious
> from this thread:
>
> 1) As is pretty obvious at this point, something happened either with the GPS
> constellation or with the firmware which runs in the GPS module, or some
> combination of those. What many of you might not be aware of is that many
> vendors use the same GPS modules from the same vendor. Generally a certain
> portion of the uGPS, PacketFlux, ePMP all will use the same module, along
> with other vendors. Each of the vendors (including PacketFlux) has changed
> the exact model of the module over the years, for instance the GPS+glonass
> modules are in newer devices, and GPS only are in older ones. I'm working
> through determining whether this is just the GPS+GLONASS modules which are
> affected (it seems like it might be the case), or if it's a few different
> types. Note that because this seems like it might be confined to a certain
> type (or types) of module, that it might turn out to be only certain
> date/model ranges of each type of gear which are affected.
>
> 2) Restart of the module seems to clear the issue. For PacketFlux gear,
> anyone with a SiteMonitor or RackInjector should be able to do this remotely.
> In the SiteMonitor, the row on the binary tab is labeled something like
> 'SyncPipe power'. There might be multiple rows depending on how many
> SyncInjector/PowerInjectors you have - this corresponds to the power port on
> each injector, so you'll have to turn off the row which is for the unit which
> the GPS receiver is attached to. In the RackInjector, it's a bit simpler
> since it's just a button on the GPS page.
>
> 3) I'm currently working through trying to find anyone who really knows what
> went on here. None of the usual notification locations seem to have any data.
> Probably too early to tell. I might luck out and be able to get a GPS
> constellation recording I can replay here to replicate.
>
> One thing which might be helpful is for those of you who log this stuff, if
> you can provide a pretty close UTC time that this occurred, along with the
> approximate LAT/LONG, I might be able to correlate this with a specific event.
>
> - Forrest
> --
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> AF@af.afmug.com
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