AMX NXD-1200VG - Page 139

Firmware Pages and Descriptions
125
VG Series Modero Touch Panels
RGB Settings Page Elements (Cont.)
All Contrast: Provides an on-screen RGB Contrast popup dialog that allows you to select from several
contrast level adjustment settings. The bargraph only serves to give the user a visual indication
of the individual contrast levels and launch the RGB Contrast popup dialog.
Use the UP/DN buttons to alter the overall RGB contrast levels of the NXA-RGB card.
• Press the All Brightness bargraph to open the RGB Brightness popup dialog.
• Use the Hide button to close the popup.
• Range = 0 - 255.
Red Contrast Use the slider bar to alter the contrast of the red color value.
• Range = 0 - 255, default = 60.
• For more accurate control, you will have to go into the Full Screen Edit Mode described in
the following section.
Green Contrast Use the slider bar to alter the contrast of the green color value.
• Range = 0 - 255, default = 60.
• For more accurate control, you will have to go into the Full Screen Edit Mode described in
the following section.
Blue Contrast Use the slider bar to alter the contrast of the blue color value.
• Range = 0 - 255, default = 60.
• For more accurate control, you will have to go into the Full Screen Edit Mode described in
the following section.
Skew:
(not an issue if using a
VideoTwist 7987 cable)
The process of skewing involves applying a convergence control to the Red, Green, and Blue
signal delivery through the terminal end of a cable. The skew value conforms to a nanosecond
signal delay of the individual RGB signals.
Different CAT5/6 cables use different materials and come in different cable lengths. Often, the
terminal ends of these individual cable pairs are not always equal in length and can therefore
result in the signal being delivered to the terminal end of the cable at a different time. This time
can be a difference of a up to 30 nano-seconds @ 200ft, and that can be more than enough to
cause the image to appear "off" or blurry.
For this reason, AMX recommends using the Belden Brilliance VideoTwist 7987 cable.
Although this cable is not CAT5 compliant, it is designed to control skew between the red,
green, and blue video signals. Therefore, for longer cable runs, the video quality will be much
higher if this cable is used.
With other cables, the interplay between Cable Variance (cable length) and Skew Control must
be taken into account when adjusting for image quality.
Skew control provides an on-screen RGB Skew Adjustment popup dialog that allows you to
select from several RGB specific signal delay (skew) adjustment settings.
Note: It is recommended that you be in the Full Screen Edit Mode when adjusting skew.
• Press the Adjust button to open the RGB Skew Adjustment popup dialog.
• Use the Hide button to close the popup.
• Range = 0 - 63, default = 0.
Note: If you are using a cable run over 50 ft. (15.24 meters), this can cause the image’s RGB
colors to become misaligned and your image to appear blurry. The skew control then becomes
a method or re-aligning the delivery times of the individual signals to the terminal NXA-RGB
card.
Red skew Use the UP/DN buttons to adjust the Red signal delay time (in nano-seconds).
• Skew/Delay = 0 - 63, default = 0.
Green skew Use the UP/DN buttons to adjust the Green signal delay time (in nano-seconds).
• Skew/Delay = 0 - 63, default = 0.
Blue skew Use the UP/DN buttons to adjust the Blue signal delay time (in nano-seconds).
• Skew/Delay = 0 - 63, default = 0.