Speco Technologies KBD-927 - Manual (Page 11)

11
2.1.4 Two Multiplexer with Slave Keyboard Controller
SPOT MONITOR SPOT MONITOR
RS-485(-) PIN No.5
RS-485(+) PIN No.4
BNC
1ST MULTIPLEXER
FOR SLAVE K/B 1ST MAIN MONITOR
BNC
2ND MULTIPLEXER
2ND MAIN MONITOR FOR MASTER K/B
BNC
POWER
AC 24V
AL5
AL6
GND
AL7
AL8
GND
COM 3
NC3
NO3
COM 4
NC4
NO4
AL1
GND
AL2
AL3
GND
AL4
COM 1
COM 2
NO1
NC1
NO2
NC2
AC
+
RX
-(
T
X
-)
RX
+(
T
X
+
)
AC
-
(R
X
-)
FGND
AC
+
AC
-
(R
X
+
)
GN
D
RS
-4
8
5
(RS-422)
(R
X
+ )
(R
X
-)
R
X
+(
TX
+)
RX
-(
T X
-)
AC 24V
POWER POWER
AC 24V
BNC
AWG # 24
Spot output 1 of the first multiplexer to be connected to 16 th input of the second multiplexer.
n: User, Spot out of n th to be connected to (15-n) th camera input of the 2 nd multiplexer. n th spot
out of the 2 nd multiplexer to be connected to the n th use spot monitor. Each user will see the
picture of the selected camera (1~(31-n)) on n th spot monitor of the Mux 2 by selecting camera
No.+Cam.
Figure 5 – Two Multiplexer with Slave Keyboard Controller