System information
P7 
2.3    Front panel 
2.5 Rear panel 
The rear panel of 4/8channel series 
1.  Video input (4channel:Video1-4,8channel:Video5-8) 
2.  Audio output 
3.  VGA output 
4.  HDMI output 
5.  Audio input 
6.  Network port 
7.  USB port 
8.  RS485 port 
9. Power input 
2.6 Audio and video input and output connections   
2.6.1 Video input connections 
The  video  input  port  is  BNC  connector  plug.  The  demand  of  input  signal  is  PAL/NTSC 
BNC(1.0V
P-P
,75Ω). 
The video signal must be accorded with the state standard which has the high signal to noise ratio, 
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