19
Figure 2-14
Please refer to the following sheet for detailed information.
SN Name SN Name
1 Alarm input/alarm output 2
HDMI port（
Reserved port. Right now
system does not support HD decode
card.）
3 Power port 4 HDMI port
5 eSATA port 6 USB port
7 SAS port 8 Video VGA output
9 Network port 10 RS485 port
11 RS232 port 12 Audio input port
13 Audio output port
2.4 Alarm Connection
Please refer to the following sheet for alarm input and output connection.
There are two alarm input types for you to select: normal open (NO) and normal close (NC).
1. Alarm input
a. Please make sure alarm input mode is grounding alarm input.
b. Grounding signal is needed for alarm input.
c. Alarm input needs the low level voltage signal.
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