Shangri-La Manual - Qvis Security

5. Alarm input type unlimitedThe DVR alarm output port is constant opening type.(1) alarm input (2) grounding (3) RS232 (4) alarm output (5) RS485ParameterGMeaninggrounding (earth)C1, NO1 Alarm output interface(constant open type)T, R RS232 portA, B 485communication interface which is connected with the recordingcontrol equipments such as the decoder2.6.1 Alarm input port specification8 channels alarm input. Alarm input type unlimited.The earth and the com port of the alarm sensor are parallel (The alarm sensorhas an external power supply) .The earth of the alarm and the DVR should be shared.The NC port of the alarm sensor must be connected with the DVR alarm inputport.The earth of the power supply and the alarm sensor must be shared when usedin external power supply.2.6.2 Alarm output port specification2 channels alarm output. There is an external power supply when using theexternal alarm equipment.Please refer to the relevant relay parameters to avoid overloading that damagesthe DVR.12