JVC V25U Instruction Manual - Page 13
Connection / Installation, Mounting the Lens
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Connection / Installation Mounting the Lens 1. Check the mounting method of the lens to be used before mounting ● The default method used for this camera is CS mount. To use a C mount lens, loosen the back focus fastening screw using a screwdriver, followed by turning the back focus adjustment ring using a finger or pointed object (e.g., screwdriver, etc.) to change the mount method. ● Make use of the values listed in the table below for the dimensions of the lens mount (a) indicated in the following diagram. Lens Flange Focus (b) Dimension (a) C Mount Lens 17.526 mm 10 mm and below CS Mount 12.5 mm Lens 5.5 mm and below ● Objects longer than the dimension (a) must not be used as doing so may damage the camera interior or prevent the lens from being properly mounted, hence resulting in malfunctions. 2. Turn the lens in the clockwise direction to mount it to the camera firmly 3. When using a DC iris lens, pay attention to the pin position before connecting the lens cable MONITOR OUT PAL OFF NTSC RESET STATUS IRIS 1 3 3. 24 4. Pin Plug 2. Loosen Back Focus Fastening (a) Screw (M2.6) F (b) 3 1 4 2 Pin No. 1 2 3 4 DC Iris Lens (Without Built-in EE Amplifier) Damping (-) Damping (+) Driving (+) Driving (-) 13