2-13System 7SC • Installation
RS-232
PROJ CONTROL
CONTACT CLOSURE
RELAY 1
IR TRANSPORT RELAY 2
12
DISPLAY PWR
SENSOR
IR COMM
RGB
H/HV
V
INPUTS
AUDIO IN
SCP/AAP CONTROL
OUTPUTS
RGB
Anaheim, CA
100
-
240
50/60 Hz
1.3A MAX.
1
LR
1LR
2LR
3LR
4LR
5LR
6LR
12345 ABCDEABCDE
67
EDCBAABCDEFGHIJ
FIXED VARIABLE
ABCDEEDCBAEDCBA
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
R
R-Y
G/Y
VID
H/HV
V
B/C
B-Y
2 3 4 5 6
LR
AUDIO OUT

System 7SC Rear Panel

Slave Switcher

Rear Panel

HostComputerSlave CableExtron part# 26-386-01
90-240 VAC, 50/60 Hz
FUSE: 250V, 400mA SLO-BLO
INPUTS INPUTS
531246
Computer DVDVCRThese Extron switchers can be slaved to the System 7SC: • System 8 PLUS • SW4 AR MX HV• System 10 PLUS • SW 6 AR MX HV

The System 7SC master connected to a slaved switcher

2. Connect the RS-232 ports of the two switchers. A slave adapter cable (Extron

part number 26-386-01), is required for RS-232 connection. This allows the

master (System 7), the slaved switcher, and the host device to be connected

simultaneously. The RS-232 communication is bidirectional.

The pin assignments for each of the slave cable’s three 9-pin connectors are as

follows:

Pin System 7 Host Slave switcher
1– – –
2 Tx Rx Tx 2 (slave to host)
3 Rx Tx Rx 2 (host to slave)
4 Tx 2 *Tx 2 –
5 Gnd Gnd Gnd
6– – –
7– – –
8 Rx 2 *Rx 2 –
9– – –

*Pins 4 and 8 on the host connector must be used for Tx2 and Rx2 only, and

not for other signals in the host system. If needed, disable or disconnect

pins 4 and 8 on the host side.