In the Specifications booklet, p.42
Power Supply: 24V, 1A POE Gigabit Adapter (included)
Power Method: Passive Power over Ethernet
Supported Voltage Range: +19 to +50VDC
Max Power Consumption: 12W
The POE label:
Model: GP-H240-100G-4
PN: POE-24V-5X-HD
Output: 24V 1A
L.P.S. +(1,2)(4,5) pins -(3,6)(7,8) pins
So that would be power over 4 pair GigE
First, the 12W max power is nice. :)
24VH would work, but not all WISP switches provide that.
In my opinion, a +50VDC max in this day and age of 802.3at which can be 52V (?), and alternately, solar power voltage constraints, is kinda short-sighted, especially when there are really good, efficient 60V switching regulators for the same money and PC board space.
I would like to use a 48V setting, but on a WS-8-250-AC, that shows a board voltage of 50.5V. (Yes, long cables would be fine, but these tend to end up at tower sites where cables end up being short.)
First a specific question: The WS-12-250-AC shows a board power of 49.5V, would we be safe to say that the newer -AC models will stay below 50V ??? Would that also be true on the -DC models that have the 9-60VDC input ?
The more general question: If they didn't think through the regulator selection, could they have used a low power rated Ethernet transformer, such that providing 2 pair 24V could put the entire 12W through 2 transformers that might not be able to handle it? I know it's not a lot of power, and the Netonix switches use very beefy transformers. But these radios are being made on the line in China. ;)
I am going to be trying a test on a pair of these for a 27 mile 20MHz backup link to a friendly neighbor WISP. Just as an aside, they used Transition Networks industrial grade switches with 2 external DC supplies. They adjusted them for 52V to POE support their licensed link equipment. Up until now, they used MikroTik inline to go 52 -> 24V, but those did not support GigE. So the same disappointment with the 50V spec limit.
