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8 Surveillance System ConfigurationThe NDC surveillance system is suitable for a wide range of surveillance applications. The system can be as singleNDC with one keyboard or encompassing as 64 domes with comprehensive matrix switching, PC control and evenDigital Video Recording. Such flexibility means future expansion is easily facilitated.8.1 NDC and KeyboardSingle dome configuration: One NDC connects to one P-2653 or P-2654. Telemetry control is sent via twisted pairbetween NDC and Keyboard.Video signal from the NDC is sent to monitor or multiplexed or quad or switcher.RS-485 Connection• 1st pin TEXDI+ of RS-485 jack at back of the keyboard connects to TXDI+ of RS-485 jack on the NDC.• 2nd pin TXDI-of RS-485 jack at back of the keyboard connects to TXDI- of RS-485 jack on the NDC.101
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