Recently connected a Hikvision DS-2FP2020 microphone to my Hik DS-2DE2A404IW-DE3 camera, using a POE splitter i was trying to power both the camera and microphone off the same run of network cable connected to the NVR DS-7608NI-I2/8P. After everything was connected, i checked the status of my camera, but it never would power on. Upon further troubleshooting, i completely disconnected the camera leaving only the mic connected to the positive and negative, and found i was only getting 1.5V. But if i disconnect the mic the power reads 12V again. Should this mic have such a huge draw on power? Or is it a problem with trying to receive the power from the NVR?
Voltage drop from microphone
- Thread starter munkiep
- Start date
alastairstevenson
Staff member
Presumably the camera works OK off the splitter when only it is connected?
Suggestion:
Check that the microphone isn't connected incorrectly.
It will have reverse polarity protection - 1.5v is consistent with that, especially when 1 to 1.5A could be flowing from the splitter.
i did check and polarity was coming from the splitter correctly, i should add that i was using this type of connector 
off of the splitter with this type of plug 
running power to the camera, and i terminated the power and ground wire for the microphone along with the wires for the camera at the green end of the connector.
off of the splitter with this type of plug running power to the camera, and i terminated the power and ground wire for the microphone along with the wires for the camera at the green end of the connector.follow up, i realized my problem. I took what @alastairstevenson said and checked the camera only plugged into the splitter and it still wouldn't turn on (no mic attached). I looked into the splitter i was using (it was given to me with some access points, had no markings or part number), and came to the conclusion that it is a passive splitter and not an active splitter. I should be getting a new active splitter tomorrow.