
5H.264 High Denition DVR User Manual
BLK-HD4D RS485 sensor and alarm termination block
Use the back panel termination block to connect sensor, RS-485, and alarm out cables.
Termination block pin denitions:
S1, GND: Sensor 1 input
S2, GND: Sensor 2 input
S3, GND: Sensor 3 input
S4, GND: Sensor 4 input
D+, D-: RS-485A and RS-485Bt
A, B: Alarm output
NOTE
S1 - S4 sensor inputs can be normally open (N.O.) or normally closed (N.C.). To congure the sensor type, go to
SETUP -> Device -> Sensor: Type.
NOTE
A - B (alarm out) can be triggered by any single of combination of sensors and motion on or video loss in up to four camera
channels. To congure alarm causing conditions, go to: SETUP -> Device -> Alarm Out.
2.1.3 BLK-HD8D back panel connectors
7
10
8
119
1
4
2 53 6
BLK-HD8D back panel
SECTION 2: HARDWARE OVERVIEW AND SETUP
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