PoE check--Best Practice?
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gripper - Member
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PoE check--Best Practice?
Just wondering if anyone has any suggestions for the safest and most reliable method for determining PoE mode and Netonix compatibility for a given radio if the documentation is lacking. Leery of just guessing and powering up....
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sirhc - Employee
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Re: PoE check--Best Practice?
You know your going to feel silly you did not think of this on your own when you read this post?! 
We provide you with what each POE option we provide does as far as PIN polarity, it is all over our website, in our PDF, and in this Forum.
24V @ .75A
Pins 4,5 positive
Pins 7,8 negative
[u]48V @ .75A[/u]
Pins 4,5 positive
Pins 7,8 negative
24VH @ 1.5A
Pins 1,2,4,5 positive
Pins 3,6,7,8 negative
48VH @ 1.5A
Pins 1,2,4,5 positive
Pins 3,6,7,8 negative
Next look at their POE brick and see if they say what pins are what polarity and what is the voltage of the POE brick.
If it does not say simply cut the end off of a short patch cable and strip the ends and use a voltmeter and test and map each wire/pins polarity.
Now you know the voltage and which pins what what voltage.
If the device is only 10/100 Mbps you can safely swap Pairs 3 & 4 which some people do with some Cambium radios but you can not swap any pins with a 1G connection.
Just be careful to never CROSS SHORT one wire from one pair to another pair as that is BAD and will fry your switch port.
CLICK IMAGE TO VIEW FULL SIZE
We provide you with what each POE option we provide does as far as PIN polarity, it is all over our website, in our PDF, and in this Forum.
24V @ .75A
Pins 4,5 positive
Pins 7,8 negative
[u]48V @ .75A[/u]
Pins 4,5 positive
Pins 7,8 negative
24VH @ 1.5A
Pins 1,2,4,5 positive
Pins 3,6,7,8 negative
48VH @ 1.5A
Pins 1,2,4,5 positive
Pins 3,6,7,8 negative
Next look at their POE brick and see if they say what pins are what polarity and what is the voltage of the POE brick.
If it does not say simply cut the end off of a short patch cable and strip the ends and use a voltmeter and test and map each wire/pins polarity.
Now you know the voltage and which pins what what voltage.
If the device is only 10/100 Mbps you can safely swap Pairs 3 & 4 which some people do with some Cambium radios but you can not swap any pins with a 1G connection.
Just be careful to never CROSS SHORT one wire from one pair to another pair as that is BAD and will fry your switch port.
CLICK IMAGE TO VIEW FULL SIZE
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gripper - Member
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Re: PoE check--Best Practice?
.....simply cut the end off of a short patch cable and strip the ends and use a voltmeter and test and map each wire/pins polarity.
Now you know the voltage and which pins what what voltage.
If the device is only 10/100 Mbps you can safely swap Pairs 3 & 4 which some people do with some Cambium radios but you can not swap any pins with a 1G connection.
Yup, I'm aware of all the documentation, and I'd kind of arrived at the bolded quote as the safe way to verify. Was "jus' askin'" in case somebody had a magic method...
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gripper - Member
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Re: PoE check--Best Practice?
....and the pin swapping is because some radios are and some aren't polarity "agnostic"....?
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lligetfa - Associate
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Re: PoE check--Best Practice?
Rather than cut a jumper and probe the unterminated ends, I prefer to insert a "banjo" inline and probe the terminated lines under load.
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sirhc - Employee
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Re: PoE check--Best Practice?
gripper wrote:....and the pin swapping is because some radios are and some aren't polarity "agnostic"....?
MIMOSA radios will correct polarity for you so MIMOSA radios will work with 48V or preferably 48VH if you have the port available
Support is handled on the Forums not in Emails and PMs.
Before you ask a question use the Search function to see it has been answered before.
To do an Advanced Search click the magnifying glass in the Search Box.
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To upload pictures click the Upload attachment link below the BLUE SUBMIT BUTTON.
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