Cascading - Black Box AC056A-R4 User Manual

Pixel Resolution and Refresh Rate
640 x 480 at 60 Hz
640 x 480 at 75 Hz
800 x 600 at 60 Hz
800 x 600 at 75 Hz
1024 x 768 at 60 Hz
1024 x 768 at 75 Hz
1280 x 1024 at 75 Hz
To run the cable the full distance, you must not route it near motors, generators,
air compressors, or other sources of electromagnetic noise. If you would like to
order VGA extension cable, contact Black Box Technical Support at 724-746-5500
or info@blackbox.com.

3.3 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 HD15 male to HD15 male cables. (If you need any of these cables,
contact Black Box Technical Support at 724-746-5500 or info@blackbox.com.)
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
your monitors.
Table 3-2. Maximum Distances.
724-746-5500 | blackbox.com
Chapter 3: Installation
Maximum Cable Length in feet (meters)
250 ft. (76.2 m)
175 ft. (53.3 m)
200 ft. (61 m)
175 ft. (53.3 m)
150 ft. (45.7 m)
125 ft. (38.1 m)
100 ft. (30.5 m)
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