Question

Hello,

We are experiencing an issue when using a TSW-200 plugged into a RUT 240 / 955 that causes the POE voltage to be passed to the RUT and seemingly leaves the RUT via the Antenna SMA connection.

Both the RUT and TSW-200 are powered via a stable DC source - and are powered via the power socket not Passive POE.

We notice other POE switches do not pass the power to the antenna connection of the RUT - so seems unique to the TSW-200.

Jonathan

Answer 1

Hello,

Could you provide some screenshots and a more detailed description to understand, how the devices are connected and how the measurements are made in order to replicate the scenario?

What is the DC source voltage that you use?

Best regards,

Comments

Hello,

Of course -

The output DC voltage is 56v

The RUT is powered via powersocket on the DC supply @12v not POE / not +56v  and is connected to LAN1 to the TSW200 LAN 1.

The TSW200 is powered via the powersocket on the 56v DC supply (and is used to power POE devices)

They are mounted inside a metal box, and we found that the antenna of the RUT when mounted to the metal box the metal box became +52V - when we power a Unifi Edge 8 150w via the same setup we dont see this issue.

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Please send a picture of your setup in a private message.

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Im afraid I cant as im not at the site. but the setup is as above.

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How are the devices themselves mounted?

Do they have direct contact with the metal box they're in?

Are you using the antennas the device shipped with?

Did you connect any extending cables to take antennas out of the metal box?

How are antennas mounted to the metal box?