Day Night Box Camera
·
User Manual
14
2. Loosen the set screw of back focus lever.
3. Adjust the stick left and right until lens gets clear image
4. Lock the set screw.
Video
DC
1
Power
Damp-
2
NC
Damp+
3
Video
4
GND
Driver-
Figure 1-3 Pins of the Auto Iris Interface
The auto iris interface is composed of four square pins as shown in
Figure 1-3.
Power, Video and GND pins are used in video driven mode.
Damp+, damp-, drive+ and drive- pins are used in DC driven
mode.
There are two driven modes of auto iris as follows:
Video Driven: The camera inputs the video signal level into
lens interior, and internal drive circuit of the lens outputs
control voltage for the electronic motor to adjust lens iris.
Direct Current Driven: There is a drive circuit for electronic
motor of the iris in the camera. The drive circuit can directly
output DC control voltage to control electronic motor.
