Speco Technologies KBD-927 Two Multiplexer with Slave Keyboard Controller, RS-422

Spot output 1 of the first multiplexer to be connected to 16th input of the second multiplexer.

n: User, Spot out of n th to be connected to (15-n)th camera input of the 2nd multiplexer. nth spot out of the 2nd multiplexer to be connected to the nth 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 11

2.1.4 Two Multiplexer with Slave Keyboard Controller

POWER	POWER	POWER
AC 24V	AC 24V	AC 24V

AWG # 24

BNC

1ST MAIN MONITOR

AL1	AC+ AC- FGND (RX+) (RX-) RX+(TX+) RX-(TX-) GND AC- AC+
AL2
GND
AL3
AL4
GND
COM1
NC1
NO1
COM2
NC2	(RS-422)
NO2	(RX+) (RX-) RX+(TX+) RX-(TX-)
	RS-485
SPOT MONITOR	SPOT MONITOR
FOR SLAVE K/B	FOR MASTER K/B

AL5

AL6

GND

AL7

AL8

GND

COM3

NC3

NO3

COM4

NC4

NO4

2ND MAIN MONITOR

BNC
BNC	BNC

1ST MULTIPLEXER 2ND MULTIPLEXER

RS-485(+) PIN No.4

RS-485(-) PIN No.5