7
1)
Alarm input
1,2,3,4
2)
Ground
3)
RS232 serial interface to send and receive
4)
RS485 interface
5)
Alarm inputs
5,6,7,8
6)
Ground
7)
Alarm output
16 External alarm interface schematic:
①
⑥⑧ al
arm input
②⑦
groun
d ③ al
arm output RS485
④R
S232
Parameters
Meaning
G
GND
R, T
Send and receive serial interface
A, B
485
communication interface
2.5.6.
Alarm Input Port Description
Please refer to the following sheer for more information.
•
Grounding alarm inputs. (Normal open or Normal close type)
•
Please parallel connect COM end and GND end of the alarm detector (Provide external
power to the alarm detector).
Summary of Contents for Indigo JRC-27F
Page 1: ...DVR WITHOUT HDD User s Manual Version 1 01...
Page 106: ...100 Figure 5 29 Figure 5 30...
Page 109: ...103 Figure 5 32 Figure 5 33...