Netonix Forums

Can someone chime on in the POE compatibility of the WS-12-250-DC switch with an AVIAT WTM 4100 microwave?

I am a little confused about the POE specs on the WS-12-25-DC

The Aviat states that it needs "+/-20 to +/-57V & 802.3bt PoE" which I understand to be PoE++

This is directly from the AVIAT WTM 4000 specsheet:

DC power supply input -24/-48 Vdc (SELV) wide-mouth WTM 4100, 4200 (13-42 GHz) ±24, ±48 Vdc WTM 4200 (4-11 GHz), WTM 4500 ±48 Vdc

Input voltage -20 to -57 V -40 to -57 V WTM 4100/ 4200 13-42 GHz WTM 4200 5-11 GHz, WTM 4500
Power over Ethernet PoE++ (proprietary)
Power consumption WTM 4100 50 W nominal, 65 W maximum

I would like to purchase these switches going forward for our microwave and radio racks at radio sites as I have had a hard time finding 12vdc powered switches that check all the boxes.

Any help would be greatly appreciated!

Simply read this and read your device poe requiremenrs

viewtopic.php?f=6&t=1178

The WTM radios will power up off a netonix using 48VH PoE mode. However, the radios need to operate in a reduced power mode. I would suggest discussing the drawbacks of this with somebody at Aviat if you are unfamiliar.

Yeah, wtm 4200 and 4500 both need a little more wattage than you can get with the 2 amp limit on the wire at 48v. I see no reason to bog the 4100, though, 65w is far less than the 96 available at 48vh?

Guys that run our ACs with Aviat stuff turn board "48v" up to around 58.2 giving 57 at the port; there's a little blue trim pot on the output side of the power supply, what longevity data I do have suggests that they don't mind it too awful much.

and mind you that all "48" on that switch is now ~60, plan accordingly.

Same trick works on the "dumb" DC switches, too, the WS-12-DC/WS-26-DCs