LIST OF POEDEVICES THAT DO AN DO NOT WORK WITH WISP SWITCHES

[sirhc]

Newer versions only support 30 volts and it will fry them, check sticker under cover!
I was going thru a stack and then fried the newest radio,

Cambium ePMP runs great at 48V.

Will the newer radios support 24V?

[adairw]

exalt-extendair-g2-back.jpg (14.22 KiB) Viewed 44063 times

Exalt Extendair G2 works at 48VH

exalt-exploreair.jpg (8.99 KiB) Viewed 44063 times

Exalt Exploreair works at 48VH

[mike99]

Newer versions only support 30 volts and it will fry them, check sticker under cover!
I was going thru a stack and then fried the newest radio.

Cambium ePMP runs great at 48V.

Only NonGPS radios are 30V max. GPS radio support both cambium and standard pinout and work fine at 48V (those are 802.3af compatible).

[mgthump]

Will not power a cambium 320 with pins 4 and 8 reversed to match the devices pin out.

the unit powered up, but when CPEs registered the graph hit 36 watts and I heard a pop in the switch, and I've killed my switch testing :/

They're just to hungry for the power budget once the air interface gets active :(


Cambium 320 (wimax) APs are powered on pings 4,7 - and pins 5,8 + same pin out as the 430 APs. the 320s and the Alvarion wimax have the same power specs and i've heard they are the same gear in the box, but I've never cracked on open to look.

[sirhc]

Will not power a cambium 320 with pins 4 and 8 reversed to match the devices pin out.

the unit powered up, but when CPEs registered the graph hit 36 watts and I heard a pop in the switch, and I've killed my switch testing :/

They're just to hungry for the power budget once the air interface gets active :(


Cambium 320 (wimax) APs are powered on pings 4,7 - and pins 5,8 + same pin out as the 430 APs. the 320s and the Alvarion wimax have the same power specs and i've heard they are the same gear in the box, but I've never cracked on open to look.

Pin 4 is from Pair 3 which is Positive polarity Pair

Pin 8 is from Pair 3 which is a Negative polarity Pair

I would never mix Pairs which is a cross short of pairs which is bad.

I have heard of companies swapping polarity on a "Pair" but never mixing polarity on the same pair as that will FRY any Ethernet transformer.

For instance there are 4 pairs and 8 pins
Pin 1 - Pair 1 - DATA - Orange/White
Pin 2 - Pair 1 - DATA - Orange
Pin 3 - Pair 2 - DATA - Green/White
Pin 4 - Pair 3 - POS - Blue
Pin 5 - Pair 3 - POS - Blue/White
Pin 6 - Pair 2 - DATA - Green
Pin 7 - Pair 4 - NEG - Brown/White
Pin 8 - Pair 4 - NEG - Brown

By Swapping Pins 4 and 8 you were doomed from the start as you were mixing Polarity on the Ethernet Transformer Pairs.

THE ONLY WAY THAT COULD EVEN WORK IS IF THIS DEVICE IS 10/100 ONLY AND THEY ARE NOT PUSHING POWER FROM PAIR 3 AND 4 THROUGH A CENTER TAP ETHERNET TRANSFORMER BUT WHY WOULD THEY MIX POLARITY ON PAIRS AS THE PAIRS ARE TWISTED AND THIS WOULD CREATE SMALL ELECTROMAGNETIC FIELDS. POLARITY SHOULD ALWAYS BE KEPT TO A PAIR NOT MIXED ON A PAIR. WHAT HAPPENS WHEN YOU WRAP WIRE AROUND SOMETHING AND APPLY DC POWER?!

And if that is a 10/100 device doing something like that you must realize that our switch is a 1G device which means we have to be using a 4 channel Ethernet Transformer and thus all 4 pair are going through a center tap transformer.

[sirhc]

SUGGESTION: Experiment with stuff like this with an OLD ToughSWITCH not your NEW WISP Switches!

[mhoppes]

Newer versions only support 30 volts and it will fry them, check sticker under cover!
I was going thru a stack and then fried the newest radio.

Cambium ePMP runs great at 48V.

Only NonGPS radios are 30V max. GPS radio support both cambium and standard pinout and work fine at 48V (those are 802.3af compatible).

Can someone here who has gone before clarify this? I thought I had read earlier in this thread that ONLY the GPS Version of the ePMP worked with standard pinouts and to use the NON-GPS version of ePMP you had to do some pin swapping?

The power supply that come with this radio reads:

pin 7,8 +30V
pin 4,5 RETURN

[sirhc]

Our switch supplies: pins 4,5 positive pins 7,8 negative

if the device is only 10/100 and NOT 1G then you can swap them yes but you better note that the cable end is swapped so you do not accidently plug that cable into a UBNT device and fry it.

[mhoppes]

It is just 10/100. So to do this properly I crimp:

PINS 1,2,3,6 down properly.
SWAP PIN 4 with 7 and 5 with 8?

Why on earth would Cambium do that?

[mhoppes]

Just updating that YES swapping those wires does in fact result in it working.