The picture above shows the wiring for a camera of this type. The data cable is pulled from the keyboard to the camera at a relatively far distance, ie up to 1200m. Communication via RS-485 requires what is called the Protocol, the "language" between Keyboard with Receiver on the Speed Dome. Popular protocols include Pelco D and Pelco P. As human languages in the world, then there is also the name of the other protocols, such as: Samsung, Hikvision, Panasonic, Philips, Axis and lots more. To obtain the full SUITABILITY, then it is highly recommended that keyboard and Speed Dome comes from one brand (factory). If different, then there are some functions that do not support, such as the functions of Auto Pan, Preset and Camera Menu. Though three is a standard feature that is shared by most of the Speed Dome. However, if different protocols, such functionality is generally fail operated via keyboard.
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