Extron electronics Universal Interfaces RGB 130xi User Manual page 25

The jumpers perform the following functions:
J20: Sync polarity jumper — This jumper adjusts the
output sync polarity. Horizontal (H) and vertical
Negative Follow
(V) sync output can either follow input sync
polarity, or be forced to negative.
• If the jumper is placed on pins 1 and 2, output
• If the jumper is placed on pins 2 and 3, output
J40: Vertical sync width jumper — This jumper
adjusts the vertical sync pulse width. Some
Wide Short
digital display devices have very specific
requirements for incoming sync pulse width. If
no picture displays, the picture cuts in and out,
or the picture is scrambled, try adjusting the
vertical sync pulse width or switching from
ADSP™ to DDSP™.
• If the jumper is placed on pins 1 and 2, the
• If the jumper is placed on pins 2 and 3, the
5. Replace and fasten the enclosure cover, reversing
step 2.
RGB 130xi xi xi xi xi , 134xi xi xi xi xi , 150xi xi xi xi xi Controls and Installation
H and V sync polarities will be forced to
negative.
sync polarity will follow input sync polarity:
the output sync signal's polarity will be the
same as the input polarity. This is the default
setting.
output vertical sync pulse will be wide.
output vertical sync pulse will be short
(narrow). This is the default setting.
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