The GPS synced radios won't boot at 20v, but the subscriber modules
should be able to run at a bit lower voltage (unless the 2.4ghz radios
are different, which is possible). With a standard 29v ePMP power
supply, there certainly shouldn't be anywhere near that much voltage
drop on 100' of cable anyway (unless that cable is complete junk).
The thing that seems really odd to me about that, is that an ePMP
normally should be drawing quite a bit less current than a PMP100
(which means less voltage drop). I'm not sure what the minimum voltage
is with a PMP100, but I know they can have problems at 12v, so I can't
see it being much lower than an ePMP SM.
On Sun, May 6, 2018 at 9:01 AM, Josh Luthman
<[email protected] <mailto:[email protected]>> wrote:
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
<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 Sat, May 5, 2018 at 4:30 PM, Philip Rankin
<[email protected] <mailto:[email protected]>> 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
<[email protected]
<mailto:[email protected]>> 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
<[email protected]
<mailto:[email protected]>> 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
<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) <[email protected]
<mailto:[email protected]>> 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
<[email protected]
<mailto:[email protected]>> wrote:
I've got two of these with problems:
http://store.packetflux.com/powerinjector-plus-sync-gigabit-version/
<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/
<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>
[email protected] <mailto:[email protected]> |
http://www.packetflux.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
