They don't boot at 20v. I don't think you'd lose 4v at 100' but I could be wrong.
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Sat, May 5, 2018 at 4:30 PM, Philip Rankin <wireless...@gmail.com> wrote: > I am changing a PMP 100. That is 2.4 GHz over to an EPM P1000 subscriber > module and the PMP 100 works perfectly with the standard PMP 100 power > supply or I can even switch it over to the EPMP1000 standard supply and it > will work. But if I put the EPMP 1000 on it own supply that comes with it > or the standard PMP 100 supply the radio never shows power. I have tested > the cable for continuity and is OK. I have to think that the cable is > resistive and the Voltage is too low at the EPMP1000. I have not checked > that yet. The cable length is right at 100 feet. Strange! The EPMP1000 > works fine on a 6’ jumper to the PS. > > Phil Rankin > Wireless Telecommunications Corp. > Pittsburg, KS > > On Wed, May 2, 2018 at 1:56 PM Josh Luthman <j...@imaginenetworksllc.com> > wrote: > >> Right pretty sure Chuck removed the ethernet issues with the newer >> revision cards. My issue, though, is the units will lose power for >> anywhere from a moment (so they simply power cycle) to 30 minutes. >> >> >> 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 Wed, May 2, 2018 at 12:38 PM, George Skorup <george.sko...@cbcast.com> >> wrote: >> >>> I'm running some 1k GPS radios from RSD-150C-24's which always put out >>> 24.0VDC. Injectors all at the bottom, 100-200 feet of cable and they work >>> fine. >>> >>> The only real problem I've had is getting them to maintain gigabit links >>> without errors. They'll either run fine with 50-100 CRC/FCS errors a day. >>> Or I'll get lots more FCS errors and the links will drop a couple times a >>> day. Some of them will eventually fall back to 100Mbps. Take the GigE-APCs >>> out and they run gigabit with no errors. >>> >>> Chuck sent me some modified CAT6-APCs to try. I just haven't had time to >>> dive into it yet. Hopefully next week when we replace a couple of those 1k >>> GPS radios with PTP550s. >>> >>> On 5/2/2018 11:22 AM, Josh Luthman wrote: >>> >>> There is - here are the counters: https://imgur.com/a/FdVP9IF >>> Note that bb5/6/7 have been losing power frequently too. >>> >>> If the voltage is too low, why would they randomly reboot maybe once or >>> twice a week and then be fine for months at a time? >>> >>> The runs are well under 100m. 24vdc feeds the NEMA enclosure, then we >>> have maybe 25 feet of cat5 to APs. >>> >>> I would think it's no more than 1 volt loss from my 24v source to the >>> AP, but I have not verified this. I know it's 24v at the green terminal >>> block to the POE injector/Gigabit Sync injector. >>> >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> <https://maps.google.com/?q=1100+Wayne+St+%0D%0A++++++++++++++Suite+1337+%0D%0A++++++++++++++Troy,+OH+45373&entry=gmail&source=g> >>> Suite 1337 >>> <https://maps.google.com/?q=1100+Wayne+St+%0D%0A++++++++++++++Suite+1337+%0D%0A++++++++++++++Troy,+OH+45373&entry=gmail&source=g> >>> Troy, OH 45373 >>> <https://maps.google.com/?q=1100+Wayne+St+%0D%0A++++++++++++++Suite+1337+%0D%0A++++++++++++++Troy,+OH+45373&entry=gmail&source=g> >>> >>> On Mon, Apr 30, 2018 at 6:00 PM, Forrest Christian (List Account) < >>> li...@packetflux.com> wrote: >>> >>>> If you have a base unit attached to these, you should look at the event >>>> counters on the tripped line in the binary/boolean tab to determine if the >>>> device is detecting an overcurrent event. If it's seeing an overcurrent >>>> trip, then yes, check the surge suppressors. >>>> >>>> The other item is what has been mentioned, if you have too low of a >>>> voltage into the PowerInjector, the ePMP's will reboot. This is >>>> especially true in cold weather since the units seem to draw more even >>>> after startup. You need around at least 26V on the input of the power >>>> injector, if not a bit more, for an ePMP to run correctly on a full 100m of >>>> cable. You could probably get away with a bit lower voltage on shorter >>>> runs. >>>> >>>> The 10/100 injector doesn't drop quite as many volts due to it being a >>>> switch closure instead of a semiconductor junction, so you might be right >>>> on the edge of what is acceptable. >>>> >>>> BTW, too low of voltage will also cause 'trips', as when the voltage >>>> drops below acceptable ranges for the ePMP, the ePMP power supply circuit >>>> tries to pull more and more power from the CAT5 cable, eventually causing >>>> what looks like a brief short circuit just before it shuts down. >>>> >>>> On Mon, Apr 30, 2018 at 11:16 AM, Josh Luthman < >>>> j...@imaginenetworksllc.com> wrote: >>>> >>>>> I've got two of these with problems: http://store. >>>>> packetflux.com/powerinjector-plus-sync-gigabit-version/ >>>>> >>>>> However one of these gives me no problems: http://store. >>>>> packetflux.com/sitemonitor-4-channel-gigabit-poe-injector-controller/ >>>>> >>>>> I have a 24vdc plant going up the tower. In the box it feeds these >>>>> three Packetflux units. The 4 channel POE injector has given me 0 >>>>> problems. >>>>> >>>>> I've got Cambium ePMP on the PowerInjector and it has been randomly? >>>>> rebooting units for several months. Yesterday one of the ports just >>>>> decided to turn off for 20 minutes and come right back. We've replaced >>>>> the >>>>> line & radio to make sure it's the box, but all signs point to it. >>>>> >>>>> Has anyone else seen this or am I lucky in getting the only two units >>>>> with power problems on them? AFAIK sync has been just as reliable as the >>>>> power through them. >>>>> >>>>> 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> >>>>> >>>>> <https://maps.google.com/?q=1100+Wayne+St+%0D%0A+++++++++++++++++++++++++++++++++++Suite+1337+%0D%0A+++++++++++++++++++++++++++++++++++Troy,+OH%0D%0A++++++++++++++++++++++++++++++++++++45373&entry=gmail&source=g>Suite >>>>> 1337 >>>>> <https://maps.google.com/?q=1100+Wayne+St+Suite+1337+Troy,+OH+45373&entry=gmail&source=g> >>>>> >>>>> <https://maps.google.com/?q=1100+Wayne+St+%0D%0A+++++++++++++++++++++++++++++++++++Suite+1337+%0D%0A+++++++++++++++++++++++++++++++++++Troy,+OH%0D%0A++++++++++++++++++++++++++++++++++++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> >>>>> >>>> >>>> >>>> >>>> -- >>>> *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> >>>> forre...@imach.com | http://www.packetflux.com >>>> <http://www.linkedin.com/in/fwchristian> >>>> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> >>>> >>>> >>> >>> >> -- > Phil > > Philip J. Rankin, CEO > Wireless Telecommunications, Corp. > A division of; > Mobilcom Wireless Services > PO Box 24 > Pittsburg, KS 66762 > 620-231-8188 >
