Hello, we have purchased STXL 16200 camera and we were trying some tests with external cooling (aqua circuit). How can I get information about the lowest value of setpoint for regulation of CCD temperature? If I set -40°C, the temperature of CCD stops on -35°C (the power of cooling cell was only about 65%). Ambient temperature was 24°C. Other tests were with disconnected cooling fan. Temperature of ambient was rising to +40°C and cooling was still running on 100%. Is there some high limit protection? Some cooling shutting off, when temp rise above tehe limit? Thank you.