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Extron • System 4
xi
Switcher Series • User’s Manual
Chapter 4 • Connecting Multiple Switchers
Looping the System 4xi with Other Switchers
The System 4xi can be interconnected, or “looped” with other switchers to allow
for a greater number of inputs to be switched to the projector. With each of these
configurations, the System 4xi acts as the “Master”, to communicate with the
projector and supply the video signal. The switcher that provides input to the
System 4xi is the “Slave”. If two switchers are looped with the System 4xi, the
second switcher is a “Slave” to the first, and the first is a “Slave” to the
System 4xi.
• The slave switcher is always connected to the highest master input (input #4
on a System 4
xi
, input #10 on a System 10 and input #8 on a System 8, etc.).
• Input numbering always starts at input #1 of the System 4
xi
and input #4 will
become the first input from the “slave” switcher.
• The System 4
xi
cannot be used as a slave switcher.
• The only switchers that can be looped with the System 4
xi
are:
Extron’s SW4 ARMX, SW6 ARMX, System 8 PLUS and System 10 PLUS.
• In any master/slave arrangement, the System 4
xi
acts as if it is one large
switcher. That is, each slave input can be selected and set up from the
System 4
xi
Front Panel. Any Slave input can be configured for any signal
type.
For example, a System 4LD
xi
with a System 8 PLUS as a slave is seen by PC
software as a line-doubling, 11-input switcher.
Input Channel Addressing
The System 4xi must be set up to recognize input that is from another switcher
unit. The Front Panel operation in Chapter 3 explains how this is done. In a
master/slave configuration, input channel numbers of 4 or higher are translated
and sent to the appropriate slave input number. For example, selecting input #9
will select input #4 on the System 4xi, and then tell the slave switcher to select its
input #6. See shaded table entry below.
Channel Sys4 SW4 SW6 SW8+ SW10+ Multiple SW8+/SW10+
Ch #1 Ch #1
Ch #2 Ch #2
Ch #3 Ch #3
Ch #4 Ch #4 Ch #1 Ch #1 Ch #1 Ch #1 Ch #1 (1st SW10)
Ch #5 Ch #4 Ch #2 Ch #2 Ch #2 Ch #2 Ch #2
Ch #6 Ch #4 Ch #3 Ch #3 Ch #3 Ch #3 Ch #3
Ch #7 Ch #4 Ch #4 Ch #4 Ch #4 Ch #4 Ch #4
Ch #8 Ch #4 Ch #5 Ch #5 Ch #5 Ch #5
Ch #9 Ch #4 Ch #6 Ch #6 Ch #6 Ch #6
Ch #10 Ch #4 Ch #7 Ch #7 Ch #7
Ch #11 Ch #4 Ch #8 Ch #8 Ch #8
Ch #12 Ch #4 Ch #9 Ch #9
Ch #13 Ch #4 Ch #10 Ch #10
Ch #14 Ch #4 Ch #2 (2nd SW10)
Ch #15-22* Ch #4 Ch #3 - 10
* Channel numbers continue if multiple switchers are used as slaves. The
highest number of channels is 22, using two System 10 PLUS units as slaves.
The following pages show configurations for looping the System 4xi with other
Extron-approved switchers. Looping the System 4xi will not work with all
switchers; call Extron Electronics if you have any questions.
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