Video iris user circuit example, O iris lens. see, Video iris – ALLIED Vision Technologies Prosilica GB2450 User Manual
Page 38: User circuit example
Prosilica GB Technical Manual V2.0.5
38
Camera interfaces
Video iris user circuit example
Prosilica GB series cameras provide built-in auto iris controls for controlling
video-type auto-iris lenses. These lenses are available from many popular secu-
rity lens companies including Pentax, Fujinon, Tamron, Schneider and others.
Remote iris lens control allows the camera to be more adaptable to changing
light conditions. It allows the user to manually control the exposure and gain
values and rely solely on the auto iris for adjustment to ambient lighting.
Caution
The following schematic uses CAMERA POWER to power the
video iris lens, and assumes CAMERA POWER = 12 V. Most video
iris lenses operate at a 8–16 V input voltage. Therefore, this
circuit is not appropriate if using a 24 V camera power sup-
ply. Doing so may irreparably damage your lens. Please con-
sult your video iris lens specifications for the appropriate drive
voltage.
Figure 21: Prosilica GB video iris user circuit diagram
CABLE SIDE
CAMERA GND
3M10114-3000PE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CAMERA GND
CAMERA POWER
CAMERA POWER
1
2
3
4
LENS POWER
VIDEO SIGNAL
LENS GROUND
JEITA CONNECTOR