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4. Using the right or left arrow, scroll to return to the *System menu option.
5. Using up or down arrow scroll until you get to the Thinklogical screen.
4.3.5 Modifying an Existing Video Modeline
Modification to support the alternate timing.
Example of modifying an existing video modeline:
The VESA timing for 1280x1024_60Hz (SXGA) is loaded into the VelocityRGB 9 TX. The modeline
can be easily modified to support the alternate timing listed in the table below. Modifiable
differences are highlighted.
Parameter
Resolution
Pixel Clock (MHz)
Horizontal Frequency (kHz)
Vertical Refresh (Hz)
Horizontal Total Pixels
Horizontal Active (Pixels)
Horizontal Front Porch(Pixels)
Horizontal Sync Width(Pixels)
Horizontal Back Porch(Pixels)
Vertical Total Lines (Lines)
Vertical active lines (Lines)
Vertical Front Porch (Lines)
Vertical sync (Lines)
Vertical Back Porch (Lines)
JUNE 2009
Supported Timing
1280x1024_60
108
63.98
60
1688
1280
48
112
248
1066
1024
1
3
38
TABLE 4
22
Alternate Timing
1280x1024_60 SGI Onyx
107.352
63.9
60
1680
1280
40
120
240
1065
1024
3
3
35
REVISION B
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