DW DWC-HC421D User Manual page 10

CONNECTIONS*
*BNC / TERMINAL
*A-Iris Socket
10
If you are using an automatic iris lens with the camera, the lens has
to be connected to the A-Iris socket of the camera. If you are using
a lens with manual or fixed iris, this socket is not used.
Operation of the camera will be confirmed by the power LED at the
rear side of the camera.
A-IRIS
4 2
3 1
DC Driven (DC)
1.control -
2.control +
3.drive +
4.GND