Page 12
recording control equipments such as the decoder
2.6.1 Alarm input port specification
1 channels alarm input. Alarm input type unlimited.
The grounding and the com port of the alarm sensor are parallel (The alarm sensor is external power
supply) .
The grounding of the alarm and the DVR should be shared.
The NC port of the alarm sensor must be connected with the DVR alarm input port.
The grounding of the power supply and the alarm sensor must be shared when used in external power
supply.
2.6.2 Alarm output port specification
1 channels alarm output. There is external power supply when using the external alarm equipment.
Please refer to the relay relevant parameters to avoid the overload that damages main machine.
2.6.3 Alarm output port relay parameters
Type
：
JRC-27F
Interface material
silver
rating
(resistance load)
Rating switch capacity
30VDC 2A, 125VAC
1A
maximal switch power
125VA 160W
maximal switch voltage
250VAC, 220VDC
maximal switch current
1A
isolation
Homo-polarity
interface
1000VAC 1minute
Inhomo-polarity
interface
1000VAC 1 minute
Interface and winding
1000VAC 1 minute
Surge voltage
Homo-polarity
interface
1500VAC (10×160us)
Turn-on time
3ms max
Turn-off time
3ms max
longevity
mechanical
50×106 MIN
（
3Hz)
electric
200×103 MIN (0.5Hz)
Environment
temperature
-40~+70
℃
