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CHAPTER 3: Installation
3.4 Cascading
If you need to display your computer’s VGA output on more monitors than
a single VGA Video Splitter can handle, you can always “cascade” Splitters:
You can connect secondary Splitters to the
MONITOR ports on the primary
Splitter with short DB15HD-male-to-DB15HD-male cables. (If you need any
of these cables, call your supplier.) Then you can plug as many as a hundred
monitors into the
MONITOR ports on the secondary Splitters.
If you’ll be cascading Splitters, we have several suggestions for maintaining
image quality and reducing the complexity of your system:
• Begin connecting secondary Splitters to the highest-numbered port on
the primary Splitter and work backwards from there. For example, attach
the first secondary Splitter to
MONITOR 8 , the second to MONITOR 7 ,
etc.
• Avoid connecting secondary Splitters to primary Splitters with fewer ports.
For example, rather than attaching a ten-port secondary to a four-port
primary, use the ten-port unit as the primary and retire the four-port
until you need to use
it as a secondary.
• In general, use as few Splitters and as short runs of cable as possible
to reach all of your monitors.
• You can cascade to more than two “layers” of VGA Video Splitters; that
is, you can begin plugging tertiary Splitters into the MONITOR ports of
secondary Splitters when you run out of MONITOR ports on the primary
Splitter. However, the more VGA Splitters that come between your
computer and your monitors, the more signal degradation you will get.
Try not to go to a third layer of Splitters unless you absolutely have to—
if you have to send VGA output to more than a hundred monitors, for
example.