I have a PowerInjector+Sync w/ a SyncBox attached running on the bench.
Receiving sync just fine. 48VDC supply on PowerA. New out of the box, no
jumper changes.
Plugged in a 5GHz GPS radio running 3.2.2. Puck disconnected, radio
laying face down on the table. Set sync source to CMM3. Saved and
power-cycled. CMM sync status is down. On-board GPS status shows n/a
lat, long and height. 2 sats visible, 0 tracked. CMM sync finally comes
up after 3 minutes and 15 seconds or so. If the radio comes up with a
good on-board GPS lock, it will receive CMM sync pretty fast. If I
simply reboot the radio, CMM sync is up a few seconds after it lets me
log in. A power-cycle resets the on-board GPS (obviously), but a soft
reboot does not.
I remember someone from Cambium explained some of this several months
ago. Maybe Sriram or Dan Sullivan? They use the on-board GPS for timing,
regardless if a CMM is in use or not, but if it is, then the
sync-over-power pulse is fed into the on-board GPS. Whereas with Canopy,
this is all done in the FPGA. So I suppose if the on-board GPS locks up,
then perhaps CMM sync won't work either. I don't really know.
I don't know what to tell you other than ask Cambium for help.
On 3/28/2017 4:07 PM, Brandon Yuchasz wrote:
I figured someone had to be doing it. Its not that big of deal until
we have a failure on one of the pucks in bad weather and then we will
want to drop back to the packetflux. I can’t figure out why the 450i
works fine and the epmp wont. Its seems like they should be the same.
We started on 24 volts went to 29.5 volts and then to 48 volts just to
match the 450i stuff. No difference.
*From:*Af [mailto:[email protected]] *On Behalf Of *Josh Luthman
*Sent:* Tuesday, March 28, 2017 3:33 PM
*To:* [email protected]
*Subject:* Re: [AFMUG] 2.4 epmp and packetflux
24v Power Injector has worked for ages here. CMM3 on four 2.4 and
four 5 GHz.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Tue, Mar 28, 2017 at 12:39 PM, Brandon Yuchasz
<[email protected] <mailto:[email protected]>> wrote:
Is anyone successfully running epmp 2.4 aps on packetflux as the
primary GPS for them? We have our sites with the onboard GPS puck as
the primary GPS and just recently started powering the newest sites
with Packetflux in order to provide a secondary GPS signal. At one
site we has an AP that the puck GPS was blocked during install and
would not receive sync so we turned on CMM3 and never were able to get
GPS. Eventually we just did a climb and moved the puck and its
receiving GPS now.
Last week when installing a new site I decided to try GPS through the
packetflux again and was not able to receive it. If I swap one of the
cables from a 450i into the same port on the packetflux we get GPS no
problem on the 450i AP but no joy on the epmp. I even went out and
grabbed an extra AP off the truck plugged it in with a 2 foot none
shielded Ethernet to the packetflux and still no GPS on CMM3.
We are using power injector plus at the newest sites. No changes using
them out of the box on 48 volts and like I mentioned they provide GPS
just fine to the450i.
So I am wondering if anyone is running this setup successfully of if
we are all just using the puck.
Thanks,
Brandon
