GC-Series auto-iris connection
Prosilica's GC-series cameras provide built-in auto iris controls for controlling video-type auto-iris lenses. The auto-iris signal is available on the GC's 12-pin hirose connector located on the back panel of the camera. Here is a PDF circuit diagram that illustrates how to connect a video-type auto-iris lens to the GC-series camera:
Note: The auto-iris function is currently available on the GC-series cameras only (not GE).