1
5
AJA HDP HD-SDI/SDI to DVI-D and Audio Converter User Manual — Video Scaling
VESA Mode
For DVI-D monitors not on the recommended list, the HDP will use standard VESA timing
based on the particular monitors “preferred timing”—as determined by the EDID
communication with the monitor. Because VESA timing standards are not based on video
formats, the HDP cannot frame lock to the input video and will operate like a frame
synchronizer - it will frame rate convert by adding or dropping frames as needed. If a
particular monitor reports a preferred timing mode that is not supported by the HDP, the
HDP will default to standard XGA (1024 x 768 60Hz) timing.
Monitors tested for Compatibility in VESA Mode:
•
HP HPL2335
•
Samsung 170T
•
Samsung 213T
•
Samsung 243T
•
Samsung 173P
Video Scaling
As shown in the graphic below, the HDP will scale the input video to the best fit for a given
monitor and video input. In cases where the input video and the monitor are already the same
or similar, the HDP automatically turns off scaling. For example, a 1920 x1080 video and a
1920 x1200 monitor will not be scaled.
Note:
The HDP also properly supports 16:10 and 5:4 monitors.
If the HDP scaling is turned off with user control Dipswitch 1, the input raster will be
displayed unscaled. This means that input rasters smaller than the monitor appear as a
“floating” image surrounded by black. For example, a 1280 x 720 image on a
1920 x 1200 monitor only fills about 40% of the screen. Standard definition inputs unscaled
on a 1920 x 1200 monitor only fill about 20% of the screen. This mode will only work when
the input raster is smaller than the monitor resolution.
The Full Screen mode, controlled by Dipswitch 2, causes the scaler to fill the monitor screen
when the input and monitor aspect ratios do not match. This is done with a combination of
horizontal stretch and zoom (for 4 x 3 video on a 16 x 9 monitor) or a combination of
horizontal squeeze and zoom (for 16 x 9 video on a 4 x 3 monitor). Both of these operations
crop part of the image and slightly distort the aspect ratio.
16 x 9 Monitor
16 x 9 Video
4 x 3 Video
16 x 9 Monitor
4 x 3 Monitor
4 x 3 Monitor
16:9
Full Screen
Full Screen “Widez
“Letterbox”
4:3
“Wide
“Pillarbox”
(10 pages)
(20 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals