MPEG LA 16CH Manuel d'utilisateur télécharger pdf (Page 69)

9 GND Signal GND

10 RS485-B DVR pin is used to serially communicate with remote PC using the RS-485 PROTOCOL.

11 RS485-A DVR pin is used to serially communicate with remote PC using the RS-485 PROTOCOL.

12 ~ 13 PIN OFF

14 ALARM RESET (PIN 14) and GND (PIN 9) are used to disable DVR alarm outputs and internal buzzer sounds.

Under normal conditions the Alarm Reset signal stays at high or 5V TTL. When the Alarm Reset signal becomes

activated or 0 zero volts, alarm outputs and internal buzzer sounds will be disabled.

15 EXTERNAL ALARM COM Under normal operation, COM disconnects with NO (Normally Open). Triggering External

Alarm input COM connects with NO.

NOTE: MAXIMUM voltage allowable is 24DCV 1A.

16 ~ 17 GND Earth GND

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MPEG LA 16CH Manuel d'utilisateur Page 69