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VGA SOURCE AND DISPLAY BALUNS
2. Overview
Instead of using bulky VGA cable to connect your video equipment (monitors, PCs,
laptops, multimedia projectors, and flat-panel displays) together, use existing
twisted-pair cable. The VGA balun pairs (VGA Source Balun and VGA Display
Baluns) allow VGA video signals to be transmitted up to 450 ft. (137.2 m) via 4-pair
CAT5 twisted-pair cable. They’re ideal for classroom video distribution, overhead
projector systems, PC-training systems, and tradeshow PC demo systems.
You’ll need one VGA Source Balun (AC640A) and one VGA Display Balun
(AC641A [female] or AC642A [male]). One VGA Source Balun (AC640A)
connects to the VGA source (output) and one VGA Display Balun (AC641A or
AC642A) connects to the VGA destination (monitor input).
The VGA Balun transmits the RGB video’s horizontal and vertical synchronization
pulses. Since the VGA Balun is a passive device and uses only 8 wires, it does not
support VGA handshaking/control signals.
To ensure reliable signal continuity between the equipment, use shielded twisted-
pair (STP) cable terminated with shielded RJ-45 connectors.
