Kramer Electronics VP-200xl - Manual (Page 13)

KRAMER ELECTRONICS LTD. 12
VGA/XGA
level is too high
or too dim.
1. Verify that the lines are well matched through 75ohm
impedances; otherwise it results in a video level that is
too high or too dim.
2. Confirm that the connecting cables are of high quality
and properly inserted.
3. Check level controls on your source input device or
output display.
Noise bars are
"rolling" up or
down in the
output image
or:
Low Frequency
Hum in the
output signal
1. Hum bars (ground loop) are caused by a difference in
the ground potential of any two or more devices
connected to your signal path. This difference is
compensated by passing that voltage difference
through any available interconnection, including your
cables.
WARNING! Do not disconnect the ground from any
piece of equipment in your signal path!
2. Check the following to remove hum bars:
3. Confirm that all interconnected equipment is
connected to the same phase of power, if possible.
4. Remove equipment connected to that phase that may
introduce noise, such as motors, generators, etc.
5. Disconnect all interconnecting cables and reconnect
them one at a time until the ground loop reappears.
Disconnect the affected cable and replace, or insert an
isolation transformer in the signal path.
LIMITED WARRANTY
Kramer Electronics (hereafter Kramer) warrants this product free from defects in material
and workmanship under the following terms.
HOW LONG IS THE WARRANTY
Labor and parts are warranted for three years from the date of the first customer purchase.
WHO IS PROTECTED
Only the first purchase customer may enforce this warranty.
WHAT IS COVERED AND WHAT IS NOT COVERED
Except as below, this warranty covers all defects in material or workmanship in this
product. The following are not covered by the warranty:
1) Any product which is not distributed by Kramer, or which is not purchased from
an authorized Kramer dealer. If you are uncertain as to whether a dealer is