Thread: Passive POE
View Single Post
  #7   Spotlight this post!  
Unread 16-01-2016, 22:56
Sparks333's Avatar
Sparks333 Sparks333 is offline
Robotics Engineer
AKA: Dane B.
FRC #1425 (Wilsonville Robotics)
Team Role: Alumni
 
Join Date: Feb 2004
Rookie Year: 2003
Location: Wilsonville, Oregon
Posts: 184
Sparks333 is a glorious beacon of lightSparks333 is a glorious beacon of lightSparks333 is a glorious beacon of lightSparks333 is a glorious beacon of lightSparks333 is a glorious beacon of lightSparks333 is a glorious beacon of light
Send a message via AIM to Sparks333
Re: Passive POE

Quote:
Originally Posted by Foster View Post
That will burn the radio up, it does not work on 48 volts. And its against the blue box note about injectors.
For the record, all PoE is 44v or greater - the radio will absolutely work on 48v IF THE 48V IS BEING SUPPLIED BY A POE INJECTOR INTO A POE-COMPATIBLE ETHERNET PORT. This is in no way suggests that putting 48v into the standard power connector will result in anything but a crisped radio, but plugging a PoE injector into the radio will work just peachy. It is, however, specifically outlawed in the rules - since there isn't a 48v source on the robot, you need an active power converter, so even if you take a DC/DC converter and strip the Ethernet cable to give 48v to the radio, all you will have done is created your very own custom injector, which is illegal.
__________________
ICs do weird things when voltage is run out of spec.

I love to take things apart. The fact that they work better when I put them back together it just a bonus.

http://www.ravenblack.net/random/surreal.html
Reply With Quote