9
2.1.2 Single DVR
C
onfigurat
io
n
RS-485(-) PIN No.5
RS-485(+) PIN No.4
POWER
AC 24V
AC 24V
POWER
POWER
AC 24V
BNC
MULTIPLEXER
SPOT MONITOR
MAIN MONITOR
BNC
BNC
AWG # 24
SW1
T
XB(
T
X-
)
TX
A
(TX
+
)
RX
A
RX
B
TX
A
TX
B
TX
B
TX
A
RX
B
RX
A
1 AUX OUTPUT
4 ALARM INPUT
RS-485 or
RS-422 HALF DUPLEX MODE
TX
A
(TX
+
)
R
XB(
R
X
-
)
R
XA(
R
X
+)
T
XB(
T
X-
)
FGND AC- AC+
TXB TXA RXB RXA
RX
A
RX
B
TX
A
AC+
AC
-
TX
B
VIDEO
Tx
+(
DOME
1
+
)
T
x
-(
D
O
M
E
1
-)
4 ALARM INPUT
RS-422
FULL DUPLEX MODE
1 AUX OUTPUT
J4 ALARM2
1
COM B
2
NC B
3
NO B
4
GND
5
ALARM8
6
ALARM7
7
ALARM6
8
ALARM5
J2 ALARM1
1
COM A
2
NC A
3
NO A
4
GND
5
ALARM4
6
ALARM3
7
ALARM2
8
ALARM1
Figure 3 – Single DVR
