Power, Cambium 820s with Netonix

pschilling
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Power, Cambium 820s with Netonix

Wed Feb 28, 2018 6:04 pm

Can we power a Cambium 820s with Netonix? We power Cambium EPMP and Medusa with Netonix.

Thanks,

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sirhc
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Re: Power, Cambium 820s with Netonix

Wed Feb 28, 2018 6:24 pm

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pschilling
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Re: Power, Cambium 820s with Netonix

Wed Feb 28, 2018 7:02 pm

After reading the lengthly post, I cannot get a straight yes or no. ?

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sirhc
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Re: Power, Cambium 820s with Netonix

Wed Feb 28, 2018 7:55 pm

Do you know what PINs want what voltage and what polarity?

This post explains what our POE options provide:
viewtopic.php?f=6&t=1178#p8809


*********************************

Question: Can I power this device with Netonix.

Answer:
Our switches are "passive" POE which means if POE is enabled on a port the power is live so if you plug in a cable that is shorted or the piece of equipment is bad or has an incompatible polarity PIN OUT you will damage the port in the switch and probably the equipment, this damage is not covered under warranty.

There are 4 Pairs and 8 PINs in an Ethernet Cable:
Pair 1: White Orange.(PIN 1 ) & Orange.(PIN 2) is POSITIVE
Pair 2: White Green...(PIN 3) & Green...(PIN 6) is NEGATIVE
Pair 3: White Blue.....(PIN 4) & Blue.....(PIN 5) is POSITIVE
Pair 4: White Brown..(PIN 7) & Brown...(PIN 8) is NEGATIVE

24V POE Option @ .75A - constant draw can surge/spike to 1A:
802.3af/at MODE B pinout
Pair 3 / PINs 4, 5 are POSITIVE
Pair 2 & 4 / PINs 3, 6, 7, 8 are NEGATIVE

48V POE Option @.75A - constant draw can surge/spike to 1A:
802.3af/at MODE B pinout
You would use this option to power most 802.3af/at devices like IP Phones and Cameras
Pair 3 / PINs 4, 5 are POSITIVE
Pair 2 & 4 / PINs 3, 6, 7, 8 are NEGATIVE

24VH POE Option @1.5A - constant draw can surge/spike to 2A:
802.3af/at MODE A & MODE B pinout combined
Pair 1 & 3 / PINs 1, 2, 4, 5 are POSITIVE
Pair 2 & 4 / PINs 3, 6, 7, 8 are NEGATIVE

48VH POE Option @1.5A - constant draw can surge/spike to 2A:
802.3af/at MODE A & MODE B pinout combined
Pair 1 & 3 / PINs 1, 2, 4, 5 are POSITIVE
Pair 2 & 4 / PINs 3, 6, 7, 8 are NEGATIVE

So now that you know what the PIN OUT is (which is in our Spec Sheet on page 17 and in the product description on our web store) all you need to do is look at the spec sheet from your device and see which POE option you can use.

If they do not specify the PIN OUT polarity break out a multi-meter and cut one end off of a patch cable and strip the wires and figure it out on your own.

Also if they have a bridge rectifier circuit like MIMOSA the device will swap the polarity the way it wants it.

WARNING - If your equipment is not specifically designed to accept power on all 4 Pairs do NOT use a VH POE option.

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speed101
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Re: Power, Cambium 820s with Netonix

Mon Mar 05, 2018 8:38 pm

For future use when people search. Yes the Cambium PTP820s radios will work on the switch with 48VH power only. I have many links up and working fine with the Netonix switches both in 11Ghz and 18Ghz flavors. The PTP820s uses the same power scheme as the PMP450i radios.

The PTP820c uses more power and I would not recommended using it with a switch.

-Chris

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Re: Power, Cambium 820s with Netonix

Sat Mar 10, 2018 1:39 am

You can run the 820S and 820C with 48V VH. We have many in production.

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