© Copyright Qvis ®. All documentation rights reserved. 102.5 Rear Panel: 16 ChannelThe 16 Channel NVR rear panel is shown below. See Figure 2-4:Figure 2-4Please refer to the following sheet for detailed information.Port Name FunctionPower switch / Power on-off buttonPower inputport/ Input AC 100~240V.MIC IN Audio input port Bidirectional talk input port. This is to receive theanalog audio signal output from the devices suchas mike phone, pickup.MIC OUT Audio output port Audio output port. This is to output the analog audiosignal to the devices such as the sound box. Bidirectional talk output. Audio output on a 1-window video monitor. Audio output on a 1-window video playback.VIEDEOOUT Video output port CVBS output1~16 Alarm input port1~16 There are four groups. The first group is fromport 1 to port 4, the second group is from port 5to port 8, the third group is from 9 to 12, andthe fourth group is from 13 to 16. They areused to receive the signal from the externalalarm source. There are two types; NO(normal open)/NC (normal close). When your alarm input device is using externalpower, please make sure the device and theNVR have the same ground.GND Alarm input ground port.NO1~NO5 Alarm output port1~5 5 groups of alarm output ports. (Group 1:portNO1~C1,Group 2:port NO2~C2,Group 3:portC1~C5