3.6 Other External Interface
2 4 6 8
2
4
10 12 14 16
1 3 5 7
1
3
B A 9 11 13 15
UP
DOWN
1 3 2 4 1 2
7016 I/O Interface
3.6.1 The Alarm Input
The alarm input type can be normally open type or normally closed type.
The alarm detector’s com port is in parallel with the ground port and connected with the ground port of the
DVR.
The NC/NO port should be connected to the DVR.
The alarm detector adopts the external and grounded with the DVR.
3.6.2 The Alarm Output
The output of the device uses the relay output. In order to avoid overloading and damaging the host, please
refer to the relevant relay parameters.
Relay Parameters
Contact Material
Silver
Electric property
Maximum switching power
240VA
，
48W
Maximum switching voltage
125VAC
，
60VDC
Maximum
2A
3.6.3 The Connection of the P/T/Z
The A, B interface of the PTZ decoder connect with A and B interfaces of the DVR’s RS-
485. 120Ω
resistors should be paralleled in the remote A, B lines to reduce the distortion of the signal if a larger
number of PTZs are connected.
