IC Realtime HDVR-MX0402-1U5MP-AI2-WEB Product Manual - Page 24

No. Port Name Function NO1-C1,Group 2:port NO2-C2,Group 3:port NO3-C3, Group Alarm output 4：port NO4-C4, Group 5: port NO5, C5, NC5). These port 1-5 (NO1-NO5; ports output alarm signal to the alarm device. Please make sure power supply to the external alarm device. 12 C1-C5; NC5) ● NO: Normal open alarm output port. ● C: Alarm output public end. ● NC: Normal close alarm output port. 13 Power button Turns on/off the DVR. 14 Ground. 3.2.4 Enhanced 1U No. Port Name 1 Video input port Function Connects to an analog camera to input video signal. 2 Audio output port Outputs audio signal to the devices such as the sound box. 3 MIC IN Two-way talk input port which receives an analog audio signal output from the devices such as microphone and pickup. 4 Audio input port Receives audio signal output from the devices such as a microphone. The port is used for general COM debug to configure IP 5 RS-232 debug COM addresses or transfer transparent COM data. 4 groups of alarm input ports (Group 1: port 1 to port 4; Group 2: port 5 to port 8; Group 3: port 9 to port 12; Group 4: port 13 to port 16). These ports receive the signal from the external Alarm input port alarm source. There are two types: NO (normal open) and NC 6 1-16 (normal close). When your alarm input device is using external power, please make sure the input device and the DVR connect to the same ground. Ground terminal. 7 VGA port 8 Network port 9 HDMI port 10 USB port Outputs analog video data to a connected display using a VGA cable. RJ45 port, connects with an Ethernet cable for network access. High definition audio and video signal output port. The port outputs the high-definition video and audio data to a connected display with an HDMI cable. Connects to external devices such as keyboard, mouse, and USB storage device.