Black Box AC056AE-R2, User Manual, Page: 11 / 18

10
VGA VIDEO SPLITTERS
3.3 Extending Your Distance
The maximum distance to which a VGA Video Splitter can drive signals to a
VGA monitor depends primarily on the quality of the cable being used and
the pixel resolution and refresh rate of the VGA image coming from the
computer.
Never
use twisted-pair cable as video-extension cable, because this
will cause “ghosting” of the on-screen images. Table 3-1 below is a guide for
maximum distance at various resolutions with high-quality VGA extension
cable.
Table 3-1. Maximum Distances
Pixel Resolution and Maximum Cable Length in
Refresh Rate Feet (Meters)
640 x 480 at 60 Hz 250 (76.2)
640 x 480 at 75 Hz 175 (53.3)
800 x 600 at 60 Hz 200 (61)
800 x 600 at 75 Hz 150 (45.7)
1024 x 768 at 60 Hz 175 (53.3)
1024 x 768 at 75 Hz 125 (38.1)
1280 x 1024 at 75 Hz 100 (30.5)
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, call your supplier for
technical support.