Prosilica GS Technical Manual V2.2.2
38
Camera interfaces
The non-isolated trigger circuit is connected to a Texas Instruments
SN74LVC2G241 buffer/driver inside the camera. See the Texas Instruments
SN74LVC2G241 for more detailed information.
Video iris user circuit example
Prosilica GS series cameras provide built-in auto iris controls for controlling
video-type auto-iris lenses. These lenses are available from many popular
security 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 to 16 V input voltage.
Therefore, this circuit is not appropriate if using a 24 V camera
power supply. Doing so may irreparably damage your lens.
Please consult your video iris lens specifications for the
appropriate drive voltage.
Figure 18: Prosilica GS 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