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Joined: May 2004
Posts: 244
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Joined: May 2004
Posts: 244 |
Thanks for those who reply in advance.
What is a good way to test for the proper voltage/current on a poe voip system?
Sometimes we use the cpe cisco switches. Other times we will use a poe switch or single poe ac adapter.
Power is suppose to be on pins 4,5 and 7,8. It is hard to test with a vom.
Any suggestions will be appreciated.
Mikee
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Joined: May 2007
Posts: 5,058 Likes: 5
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,058 Likes: 5 |
Have you tried using one of the Siemon Breakout boxes (banjo or frisbee)? I don't find the banjo listed on their website, but the "frisbee" is below: https://www.siemon.com/e-catalog/ECAT_GI_page.aspx?GI_ID=tt_modapt It makes VOM testing a snap. Sam
"Where are we going and why are we in this hand basket?"
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Joined: Feb 2007
Posts: 232
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Joined: Feb 2007
Posts: 232 |
Listen to Sam.
The MODAPT works great. I would be lost without mine.
The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence - Charles Bukowski
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Joined: Feb 2005
Posts: 12,348 Likes: 4
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Joined: Feb 2005
Posts: 12,348 Likes: 4 |
Keep in mind also that most POE switches know when a POE device is connected to a port and will turn on the power. The port is otherwise unpowered and can be used just like a regular switch.
So I suspect using a banjo will not give you power unless you have a POE device plugged into the other side. Of course something like Tommy found is is the way to go.
-Hal
CALIFORNIA PROPOSITION 65 WARNING: Some comments made by me are known to the State of California to cause irreversible brain damage and serious mental disorders leading to confinement.
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Joined: Jun 2007
Posts: 2,106
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Joined: Jun 2007
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A midpoint will just toss power on the line, but most switches (at least 802.3af compliant) have to detect that there is a PoE device present.
Your best bet is like what Tommy found.
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Joined: May 2007
Posts: 5,058 Likes: 5
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,058 Likes: 5 |
The modapt can be placed in series with your device - it's got jacks on either end so you can hook up and test a working unit.
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Mar 2008
Posts: 54
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![[Linked Image from blackbox.com]](https://www.blackbox.com/images/standard/TS574A_PCS2.jpg) Blackbox Net Power. Will simulate various POE loads to make sure everything is up to snuff. I wasn't sure if I could put up a link to the manufacturer, as it goes to a pricing page.
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Joined: Sep 2005
Posts: 9,289 Likes: 11
Admin
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Joined: Sep 2005
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Byte Brothers has a new device for that its the POE1000 POE TESTER ![[Linked Image from weisd.com]](https://www.weisd.com/store2/BYTPOE1000.jpg)
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Joined: Jul 2003
Posts: 6,768
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Joined: Jul 2003
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Merritt, I just bought one of those last week.
:thumb:
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