Infinite Play Series NVR, Руководство пользователя по установке и эксплуатации

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INFINITE PLAY
10 EN
thunder.
C. In the outlying end, please connect 120Ω resistance paralleled to reduce the inflection and
insure the signal quality.
D. The 485 AB lines of NVR can not connected with other 485 output equipments paralleled.
E. The voltage between the AB lines of the decoder must be less than 5V.
4
、
Front equipment grounding note:
Bad grounding can lead to the burn-out of the chip.
5
、
Alarm input type unlimited:
The NVR alarm output port is” NORMAL OPEN “type.
1 2 3 4
(1) alarm input (2) grounding (3) alarm output (4) RS485
parameter meaning
SENSOR Alarm input (1
、
2
、
3
、
4)
GND ground
COM1
、
NO1 Alarm output interface(normal open type)
+
、
- 485communication interface which is connected with the
recording control equipments such as the P/T/Z or keyboard
2.4.1 Alarm input specification
1 channels alarm input. Alarm input type unlimited.
The grounding and the com port of the alarm sensor are parallel .The grounding of the alarm and NVR
should be shared. The NC port of the alarm sensor must be connected with the NVR alarm input port.
The grounding of the power supply and the alarm sensor must be shared when used in external power