Philips Video Camera - Manual (Page 10)

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2.2.4 Two Multiplexer with Slave Keyboard Controller (method 2)
Figure 8 - Two Multiplexer with Slave Keyboard Controller (method 2)
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 (17-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 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.
Rear
Keyboard controller
Master
Power
24VAC
BNC
1st Main Monitor
BNC
BNC
RS-485 (–) Pin No. 4
RS-485 (+) Pin No. 6
J-Box (Back) J-Box (Front)
AWG #24
Power
24VAC
Power
24VAC
Spot Monitor
for Master K/B
1st Multiplexer
BNC
2nd Multiplexer
2nd Main Monitor
Spot Monitor
for Slave K/B
Keyboard controller
Slave
Rear