Omnitik UPA5Hnd POE Out and Picostation M2

Hello all,

Last day my installation fell down due to wind and rain and I decided to unmount it and build it again with better conditions. To do that, I wanted to
save some cables and PoE injectors by using the PoE-Out feature of my Omnitik UPA-5Hnd, so I upgraded the firmware of the Omnitik and enabled PoE-Out feature. It worked perfectly with other antennas, including the Nanostation Loco M5 I have. However, when I tried to plug my Picostation M2 it didn’t work, the Omnitik rebooted and, since then, the Picostation didn’t turn on anymore. The Omnitik remains ok, anyway.

After that, I realized that the Picostation PoE is different than others because it uses less voltage (15v instead of 24v). However, I thought that the PoE-Out feature worked with all the PoE voltage standards and that the AutoOn mode of the PoE port would protect my devices.

Despite of that, it seems that I can power on the Picostation with the serial interface on the board (at least leds blink), although the ethernet port does not work anymore.

In conclusion, my question are:

  1. May the PoE-Out feature of the Omnitik UPA have burned my Picostation, even having in mind that I had the AutoOn mode enabled in my Omnitik ports?

  2. How can I know and be sure of which devices or PoE inputs are safe to use with the PoE-Out feature? I am planning to buy new picostation and new antennas, and I would like to know which ones are safe to use with PoE-Out.

Thank you,
Joan

all what linked pdf states is - it is supplied by 15V 0.8A PSU and device is powered by PoE over spare pairs.

It does not state what possible other voltages can be safely supplied to the device.

In our tests Omnitik with PoE-Out feature can only supply 1.1A at around 21V to 22V (highly depends on length and quality of cabling used) due to the power drop on protection in the router, and power drop on protection chain on other RouterBOARD device powered by PoE out feature.

For future use here you can read excerpt from http://wiki.mikrotik.com/wiki/Manual:PoE-Out#auto-on_mode

auto-on mode
If auto-on is selected then port operates in this strict order:

with low voltage it checks for resistance on the connected port. If it is detected that resistance is in range (3kΩ to 26.5kΩ) power is turned on;
when power is given it is continuously checked if overload limit is not reached or short circuit is detected
when cable is unplugged port returns in detection state and will remain off until suitable port that could accept PoE is detected

for 100Mbps (Fast Ethernet) port measured resistance usually is 150Ω. Low voltage is around 3V and will not damage port, even if PoE-in feature is not present on it.