LT Security LTD3446HT User Manual
Page 7
>>Stand-alone DVR User Manual
6
Pic.6 RS232/485 Pin definition
C、 VIDEO
1) Video In:1～16
CH CVBS Video input
；
2) Video Out： CVBS
Video output
。
D、 AUDIO
1) Audio In:1～16CH
Audio input
；
2) Audio Out：
Audio output
。
E、 LAN：10/100M
network port
。
F、 USB：USB2.0
port.
G、 Alarm：Alarm signal port：
25 pin jack in top line from left to right, the pins definition are 1，2…13，on bottom
line from left to right，the pins definition are 14，15…25。
1) Alarm output（Relay out）：four group, they are：
Alarm output 1（Relay out 1）N1D-----------------------------------------------4
Alarm output 1（Relay out 1）N1U-----------------------------------------------17
Alarm output 2（Relay out 2）N1D-----------------------------------------------3
Alarm output 2（Relay out 2）N1U-----------------------------------------------16
Alarm output 3（Relay out 3）N1D-----------------------------------------------2
Alarm output 3（Relay out 3）N1U-----------------------------------------------15
Alarm output 4（Relay out 4）N1D-----------------------------------------------1
Alarm output 4（Relay out 4）N1U-----------------------------------------------14
Relay output 120VAC/1A 24VDC/1A， Normal（Relay break），alarm（relay
colse）。
2) Alarm input（Alarm In）：16CH alarm input pins are：
Alarm In 1--------------------------------------------------------------------------- 13
Alarm In 2--------------------------------------------------------------------------- 25
Alarm In 3--------------------------------------------------------------------------- 12
Alarm In 4--------------------------------------------------------------------------- 24
Alarm In 5--------------------------------------------------------------------------- 11
Alarm In 6--------------------------------------------------------------------------- 23
Alarm In 7-------------------------------------------------------------------------- -10
Alarm In 8-------------------------------------------------------------------------- -22
Alarm In 9--------------------------------------------------------------------------- 9