RGB 160xi and RGB 164xi • Controls and Installation
Controls and Installation, cont’d
Wide
Short
1
Negative
Follow
1
The jumpers perform the following functions:
J20: Sync polarity jumper — This jumper
adjusts the output sync polarity.
Horizontal (H) and vertical (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 H and V
sync polarities is forced to negative.
• If the jumper is placed on pins 2 and 3, output sync
polarity follows input sync polarity; the output sync
signal’s polarity is the same as the input polarity. This is
the default setting.
J40: Vertical sync width jumper — This jumper
adjusts the vertical sync pulse width.
Some 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 output vertical
sync pulse is short (narrow).
• If the jumper is placed on pins 2 and 3, the output vertical
sync pulse is wide. This is the default setting.
5. Replace and fasten the enclosure cover, reversing step 2.