4 two multiplexer with slave keyboard controller, Camera input of the 2, Multiplexer. n – Speco Technologies KBD-927 User Manual
Page 11: Spot out of the 2, Multiplexer to be connected to the n
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