BM-141GE / BB-141GE398.3.6 Auto-Iris Lens video output (12-pin Hirose connector)This analogue signal is not routed through the GPIO. This signal is available at pin 4 of 12-pinHirose connector. It can be used for lens iris control in Continuous mode only.The signal is taken after the CCD sensor output passes through the gain circuit. The videooutput is without sync. The signal is 0.7 Vp-p.To get this signal, the internal DIP switch (SW 601) must be set. Refer to chapter 5.4.Fig. 15. Video output circuit.Fig. 16. Iris Video8.3.7 Full Auto Exposure functionThe Full Auto Exposure function combines three automatic functions; Lens Auto Iris, AutoGain Control(AGC) and Auto Shutter. When dealing with widely varying lighting conditions,these automatic functions can be made to work in a coordinated fashion to control exposurefor a constant video level output. This function makes the BM-141GE and BB-141GE well-suited for Intelligent Traffic Systems (ITS) and high-end security or surveillance applications.Full Auto Exposure requires the use of a video controlled auto-iris lens system. The lensshould be connected while the power to the camera is OFF.This Full Auto Exposure function operates as described below.
