Re: [AFMUG] ePMP and Packet Flux configuration settings. (UPDATE)

Tue, 21 Feb 2017 19:10:57 -0800

If you're using Chuck's GigE-APC cards with sync-over-power in the mix and gigabit is failing to negotiate, then you do not have the latest revision GigE-APC's. I've seen this first hand and tested prototype cards for Chuck, all of which worked of course because he's Chuck. I wonder if that could also be why your ePMP's aren't seeing sync. Try bypassing the suppressors next time and see what you get. The ePMP's may be more sensitive/picky about the pulse, and the suppressors may be absorbing just enough to make the ePMP's no likey. Chuck or Forrest could probably speak more to that than me. 

BTW, you can feed a Rev H SyncInjector with 48 volts no problem.

On 2/21/2017 8:39 PM, Brandon Yuchasz wrote:


Forest,
Thanks for the reply. I will answer your questions below but won’t be able to try the breaking of the shielded cable until I visit the site again. It could be a couple weeks before I am there again. 

Here is the info:
We were running 24 volts ( although as you pointed out I took it up to 48 volts by putting it in place of the 450i) I did not have a 30 volt on the truck so put the 24 volt in until I could replace it. 

Cable length is less than 200 feet probably closer to 180 feet.

It was about 40 degrees F when I was trying to do this and sunny.
This is a gigabit sync injector . The 450i that I plugged it in place of was/ is being fed by a PowerInjector Plus. ( have not touched the jumpers)
These are being feed through a MTOW ( newest version rack mount APC style ) suppression. I could look it up for model but I think you know what I mean.
One thing worth mentioning is my MicroTik RB1100 was having issues negotiation Gig connections on the ePMP APs and the 450i APs. I ended up letting it negotiate 100mb instead. The ePMP backhauls are running auto negotiated gig no problem but are on Cambium OEM POE instead of a packetflux for power. Same suppression in place and same shielded cables.
Let me know your thoughts. I am happy to try breaking the shielding connection and report back but like I said it could be a few weeks. 

Thanks Brandon
*From:*Af [mailto:[email protected]] *On Behalf Of *Forrest Christian (List Account) 
*Sent:* Tuesday, February 21, 2017 5:02 AM
*To:* af
*Subject:* Re: [AFMUG] ePMP and Packet Flux configuration settings. (UPDATE)
It sounds like you covered all of your bases, especially since you plugged the ePMP radio in where the 450i was and it didn't work. So some of the ones below don't seem to apply: 

What voltage are you running the injector at?

How much cable length are you running?
The ePMP radios reallly are picky about 24V and long cable runs, especially when it's cold out.
This is a gigabit syncinjector, right? If so, I won't ask you if you changed any jumpers in the units. 

I do have one very odd request:
If these are shielded cables running up the tower, can you somehow break the shield on the bottom end? A short unshielded pigtail to a keystone jack often works. If you have a surge protector at the bottom, try inserting this either between the injector and the surge, and alternatively between the surge and the cable up the tower. I've had 1-2 reports that reterminating the cables with unshielded ends at the bottom causes otherwise unsyncable ePMP radios to suddenly start receiving sync. 

-forrest
On Mon, Feb 20, 2017 at 9:14 PM, Brandon Yuchasz <[email protected] <mailto:[email protected]>> wrote:
So to update this previous post. Went to the site and confirmed that yes we were getting the blinking sync light on the SyncInjector feeding the ePMP APs, I logged into the AP that did not have GPS and set it to use the CMM3. Rebooted and no joy still no GPS. Frustrated I ended up unplugging the cable feeing one of my 450iAPs that was receiving sync from the PowerInjector Plus and plugged the ePMP APs cable into it. Still no joy no GPS after waiting several minutes. I am not sure how my 450i APs can be receiving GPS from the unit but the ePMP doesn’t from the same feed.
I ended up doing a climb and relocated the antenna for the onboard GPS in the ePMP. It now has GPS from the onboard unit but it would still be nice to have the secondary over power working. 

Any thoughts I am all ears.

Thanks,

Brandon
*From:*Af [mailto:[email protected] <mailto:[email protected]>] *On Behalf Of *George Skorup 
*Sent:* Monday, February 20, 2017 12:26 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] ePMP and Packet Flux configuration settings.

I don't have any CTMs. But I believe the CTM1 = CMM3 and CTM2 = CMM4.

On 2/20/2017 11:48 AM, Dan Petermann wrote:

    Do you know what to select when using a CTM?

    On Feb 17, 2017, at 12:53 AM, George Skorup
    <[email protected] <mailto:[email protected]>> wrote:

    If the 1PPS LED is blinking on the daisy-chained SyncInjector,
    then I'd say it's fine with a straight-through cat5.

    The ePMP1000 GPS radios will take 802.3af or Canopy -4/5 +7/8 at
    either 24 or 48 volts. Running them at 48-56 as others have
    pointed out several times in the past is better with the cold
    startup and whatnot.

    The ePMP Sync radios don't do AutoSync like Canopy. You have to
    select internal (generate in Canopy terms), GPS (on-board), CMM3
    or CMM4 for Sync Source on the Config > Radio page. You want to
    select CMM3 when using a PacketFlux injector.

    On 2/16/2017 11:58 PM, Brandon Yuchasz wrote:

        Thanks,

        Patch between the two packetflux is 1 foot.

        ePMP is running 6.2.1.X ( don�t want to go to 3.2.x until
        they work out one more bug. )

        Using the SyncBox Junior for the syncpipe.

        Cable runs to the APs are 140 feet

        �

        �

        *From:*�Af [mailto:[email protected]]�*On Behalf
        Of�*That One Guy /sarcasm
        *Sent:*�Thursday, February 16, 2017 11:51 PM
        *To:*�[email protected] <mailto:[email protected]>
        *Subject:*�Re: [AFMUG] ePMP and Packet Flux configuration
        settings.

        �

        Shorter the better on the cable

        Update all the components to the current firmware, and verify
        the syncpipe is the right revision. The default pinout on the
        pins inside works with 48v ps

        �

        On Feb 16, 2017 11:35 PM, "Brandon Yuchasz"
        <[email protected] <mailto:[email protected]>> wrote:

        Hopefully and easy question here.

        �

        We have always used the onboard GPS for ePMP access points up
        until this point.� We recently installed 4 new ePMP APs and
        the tower blocks our north facing AP from getting GPS on the
        onboard GPS. All other track GPS just fine. We also have 450
        APs on the tower and are using a PacketFlux PowerInjector Plus
        to power them and provide GPS and its working fine. I then
        installed a Gigabit SyncInjector ( had it on the shelf new)
        �to power the ePMP APs and connected it to the GPS feed with
        a standard patch cable on the PowerInjector Plus. Light
        flashes shows its getting GPS but no joy on the ePMP AP.

        �

        So my questions are :

        �

        what configuration should I use in the ePMP AP?

        �

        And I am fairly sure stadard patch cable is acceptable between
        the two packet flux but I wanted to confirm?

        �

        Thanks everyone.

        �

        Brandon Yuchasz

        �

        �




--

*Forrest Christian*/CEO, PacketFlux Technologies, Inc./

Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
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