PoE Splitter/Adapter of choice to power IR illuminator?

alekk

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Ahhhhhh ... so I am being a numbskull! ;-)

All this time I thought the the Ethernet cable to the camera would carry BOTH data and PoE ... but that is NOT the case ... as only data is carried there ... and only the 12V splitter has power. Well that's a bummer ... since I think it's easiest just to have a single (ethernet) cable come out of the camera that can be used for both data and power.

2021_09_14_anvsion_splitter.jpg

So this raises the question IS there a splitter out there that does deliver power to the Ethernet? Or do you have to split the 12V Power line and run another cable into the camera housing?

And if NOT, what if I get a physical splitter (like this one) that just passes through all 8 pins [EDIT] ... ooops ... that does a switcheroo of the pins. Something like this is just a passthrough of all 8 pins ... so then the camera is plugged into one side ... and the splitter into the other so now I have 12V to power that microphone? And LOL @icpilot that I have that exact same microphone! ;-)

@Teken - good point and duly noted that these are "active" devices.
 
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Left Coast Geek

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ok, someone mentioned PoE mode A and B before, so I looked them up.

PoE mode A uses pins 1,2,3,6 for power, this is the default mode for 802.3af, but an 802.3af supply is supposed to support both modes.

PoE mode B uses pins 4,5,7,8, which are not connected in your splitter. old 24V passive stuff was all about mode B.
some 48/56V devices also default to B, which is in violation of the 802.3af spec, but its possible your camera only supports this mode.
 

icpilot

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Ahhhhhh ... so I am being a numbskull! ;-)

All this time I thought the the Ethernet cable to the camera would carry BOTH data and PoE ... but that is NOT the case ... as only data is carried there ... and only the 12V splitter has power. Well that's a bummer ... since I think it's easiest just to have a single (ethernet) cable come out of the camera that can be used for both data and power.

View attachment 101682

So this raises the question IS there a splitter out there that does deliver power to the Ethernet? Or do you have to split the 12V Power line and run another cable into the camera housing?

And if NOT, what if I get a physical splitter (like this one) that just passes through all 8 pins [EDIT] ... ooops ... that does a switcheroo of the pins. Something like this is just a passthrough of all 8 pins ... so then the camera is plugged into one side ... and the splitter into the other so now I have 12V to power that microphone? And LOL @icpilot that I have that exact same microphone! ;-)

@Teken - good point and duly noted that these are "active" devices.

Since you are using that microphone, it has 3 connectors:

white connector for audio which connects to your Line-In connector on the camera
red connector which is your power IN from the Anvision
black connector which is your power OUT to the camera

In your case you don't need a Y-splitter for the power.
 

alekk

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First, I'm super-appreciative of everyone chiming in ... thanks a bunch!

Yep - I realize since that microphone has a 12V pass-thru, I don't need to further split. And sure, I could use that 12V pass-thru to power the camera, but now I'd have to add another cable into the camera itself- I was hoping I could simply power it via the Ethernet cable.

So is there a "splitter" such that it takes a PoE cable as input, "pass thru" the PoE (both power and data) via an Ethernet cable, and also provides a 12V pigtail?

I.e. the AnVision does pass-thru pins 1236 ... but I am I correct that it does NOT pass through power?
 

icpilot

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First, I'm super-appreciative of everyone chiming in ... thanks a bunch!

Yep - I realize since that microphone has a 12V pass-thru, I don't need to further split. And sure, I could use that 12V pass-thru to power the camera, but now I'd have to add another cable into the camera itself- I was hoping I could simply power it via the Ethernet cable.

So is there a "splitter" such that it takes a PoE cable as input, "pass thru" the PoE (both power and data) via an Ethernet cable, and also provides a 12V pigtail?

I.e. the AnVision does pass-thru pins 1236 ... but I am I correct that it does NOT pass through power?
I don't understand why you need another cable. What connectors do you have on your Hik camera?
 

Teken

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I’m also confused almost every recent Hikvision camera has 12 VDC / POE / Other. If the microphone as you noted has a pass through (power) no extra cable required.

If no pass through a simple Y splitter is needed to provide 12 VDC for the camera and microphone. Regardless, I would love to know what the voltage is at the POE splitter you have now since you identified it was not wired incorrectly vs no power on the RJ45 Jack.
 

alekk

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Ummmm ... I'm probably not explaining this well - sorry about the confusion.
First, the Hikvision certainly has 12VDC in to power it which can be used to power the camera.

My current setup is PoE injector to Ethernet cable which plugs into the Hikvision - provides BOTH data and power.
And I have an Audio input cable coming out of the camera to the microphone ... which is powered via a 120VAC->12VDC transformer.

What I was HOPING to do is get rid of the transformer. So basically I would put the Anvision splitter just before the camera so then I could use the 12VDC splitter to power the microphone. And I THOUGHT that the Ethernet cable output from the Anvision would provide BOTH data and power ... but all indications are that it ONLY provides data. So while I could use this setup, it turns out I would ALSO have to run 12VDC into the camera from the passthrough connector from the microphone.

If I want to do what I originally thought I could do, I would have to get a splitter like @tigerwillow1 mentioned ... that actually does pass power (and data of course) through the Ethernet cable.

Or the other option that I think (?) should work is get a physical Ethernet splitter that just passes through all 8 pins. I have to be careful because many of these devices switch the pin settings because they are used to create two Ethernet connections over a single cable. They do this by sending data over both the standard 1236 pins and then (basically) running a 2nd connection over 4578. Here's an example of what those look like - see the 3rd image (pin layout) and the 4th image that shows how they "duplex" the connection.

What I think should work is something like this - dead simple and totally passive - just pass all 8 pins as-is to both outputs. And yes, I can NOT hook up two DATA devices up to this ... but only one would be passing data to the camera (and hopefully power!) while the other would plug into the Anvision which would only be providing power to the microphone.
 

Teken

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Ummmm ... I'm probably not explaining this well - sorry about the confusion.
First, the Hikvision certainly has 12VDC in to power it which can be used to power the camera.

My current setup is PoE injector to Ethernet cable which plugs into the Hikvision - provides BOTH data and power.
And I have an Audio input cable coming out of the camera to the microphone ... which is powered via a 120VAC->12VDC transformer.

What I was HOPING to do is get rid of the transformer. So basically I would put the Anvision splitter just before the camera so then I could use the 12VDC splitter to power the microphone. And I THOUGHT that the Ethernet cable output from the Anvision would provide BOTH data and power ... but all indications are that it ONLY provides data. So while I could use this setup, it turns out I would ALSO have to run 12VDC into the camera from the passthrough connector from the microphone.

If I want to do what I originally thought I could do, I would have to get a splitter like @tigerwillow1 mentioned ... that actually does pass power (and data of course) through the Ethernet cable.

Or the other option that I think (?) should work is get a physical Ethernet splitter that just passes through all 8 pins. I have to be careful because many of these devices switch the pin settings because they are used to create two Ethernet connections over a single cable. They do this by sending data over both the standard 1236 pins and then (basically) running a 2nd connection over 4578. Here's an example of what those look like - see the 3rd image (pin layout) and the 4th image that shows how they "duplex" the connection.

What I think should work is something like this - dead simple and totally passive - just pass all 8 pins as-is to both outputs. And yes, I can NOT hook up two DATA devices up to this ... but only one would be passing data to the camera (and hopefully power!) while the other would plug into the Anvision which would only be providing power to the microphone.
All you need is a Y splitter for the 12 VDC - done.
 
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Y Cable

PoE Splitter
 

alekk

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Actually, because the microphone has a pass-thru 12V, I don't even need a 12V splitter if I use that very viable solution of using that to power the camera.

The two questions I'm trying to answer are:
1. Does the ANvision "remove" power from the Ethernet and only pass thru data? I'm pretty sure the answer is YES.

2. How about if I use an Ethernet 1-2 splitter like this to connect to the cable coming from the PoE injector/switch. From there, one Ethernet cable would continue on to the camera and provide BOTH data and POWER. The other Ethernet cable would go into the Anvision and from there, I would ONLY use the 12V output to power the microphone.
 

Teken

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Actually, because the microphone has a pass-thru 12V, I don't even need a 12V splitter if I use that very viable solution of using that to power the camera.

The two questions I'm trying to answer are:
1. Does the ANvision "remove" power from the Ethernet and only pass thru data? I'm pretty sure the answer is YES.

2. How about if I use an Ethernet 1-2 splitter like this to connect to the cable coming from the PoE injector/switch. From there, one Ethernet cable would continue on to the camera and provide BOTH data and POWER. The other Ethernet cable would go into the Anvision and from there, I would ONLY use the 12V output to power the microphone.
The item you linked essentially separates the RX / TX from 1G to 10/100. Now, whether power is seen on the other split port comes down to how it’s made and you confirm the same.

This sure seems like a heck of a lot of work for something that should be Plug & Play.
 
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