Sweet! I'll crank up the power supply another volt. IIRC Ubnt stuff dies at 26 or 27 volts, so you can see why I aimed for right at 24v.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Sun, May 13, 2018 at 9:21 AM, Josh Baird <[email protected]> wrote: > Agreed. I expect your issues will go away if you increase voltage. We > run all ePMP @ 48VDC. It fixed these random rebooting issues for us. > > On Sun, May 13, 2018 at 6:37 AM, Forrest Christian (List Account) < > [email protected]> wrote: > >> 22.93 is too low. Cambium says 23V is the minimum into the radio. See >> http://community.cambiumnetworks.com/t5/ePMP-Installatio >> n/ePMP-PoE-Powering-Primer/td-p/49944 >> >> You need to subtract a bit of loss inside the injector, and then a bit >> more for cabling. Plus a bit more for everything else. >> >> For verification, I took my bench ePMP and hooked it up to my power >> supply - it doesn't even turn on until 22.5V at the radio. I'm sure other >> copies are probably higher or lower. And I'm sure it changes with >> internal temperature of the radio. >> >> One big difference between the PoE Injector and the SyncInjector is that >> the syncinjector uses semiconductor switches which generally have a bit >> more voltage drop than a relay. The tradeoff is that the semiconductor >> switches can switch far more power than the relays can and can switch >> quickly enough to do sync over power. >> >> >> >> >> >> On Sat, May 12, 2018 at 10:26 PM, Josh Luthman < >> [email protected]> wrote: >> >>> So we replaced all 8 surge cards. It's getting 22.95 and 22.93 for the >>> two boxes (to the green terminal). Devices are still rebooting... >>> >>> Epmp never has problems with the same DC supply through the green POE >>> injector, forgot to mention that. >>> >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >>> Suite 1337 >>> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >>> Troy, OH 45373 >>> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >>> >>> On Sun, May 6, 2018 at 8:14 PM, George Skorup <[email protected]> >>> wrote: >>> >>>> Funny story if you were using ePMP near the beginning. Some of the >>>> first original 5GHz integrated radios had labels marked 56VDC. They were >>>> definitely NOT capable of being powered from 48/56V. Somebody screwed up. >>>> >>>> Yeah. We've run Force180/200 survey setups on a small 12V SLA too. It >>>> works, but they're rated at 14 volts. Same with the 100 and 450 SMs. Still >>>> works. However, I recall the regulator is very inefficient down that low. >>>> Like the old 320 and 430 APs could be run on 24VDC, but you really didn't >>>> want to do that, and Motorola/Cambium said it was completely unsupported. >>>> >>>> >>>> On 5/6/2018 5:13 PM, Bill Prince wrote: >>>> >>>>> I had a portable 12V battery that I would use for site surveys with >>>>> the old PMP100. I'm pretty sure they would function in the 8-10V region. >>>>> >>>>> I know nothing about the ePMP radios. Trust George. >>>>> >>>>> >>>>> bp >>>>> <part15sbs{at}gmail{dot}com> >>>>> >>>>> On 5/6/2018 2:33 PM, George Skorup wrote: >>>>> >>>>>> Original 5GHz integrated and connectorized are 14-30VDC, -4/5 +7/8 >>>>>> only. >>>>>> >>>>> >>>>> >>>> >>> >> >> >> -- >> *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* >> Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 >> <https://maps.google.com/?q=3577+Countryside+Road,+Helena,+MT+59602&entry=gmail&source=g> >> [email protected] | http://www.packetflux.com >> <http://www.linkedin.com/in/fwchristian> >> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> >> >> >
