Quantum Data 881 - Manual (Page 345)

881/882 Video Test Generator User Guide (Rev A.22) 327
Testing HDMI video pixel repetition (882 only)
The EIA/CEA-861-B standard defines a number of progressively-scanned gaming formats
which support variable horizontal resolutions. These formats maintain a fixed 2880-pixel
format timing and use pixel repetition to provide 10 different effective horizontal
resolutions. A special blanking scheme further reduces the number of active pixels (to
those listed in the table below), thereby providing a horizontal safe area that insures that
all of the pixels in a game will be visible on overscanned HDMI displays.
Note: This feature is not supported on the 881 generator.
To support HDMI gaming format and pixel repetition testing, the generator allows you to
sequentially apply pixel repetition (up to 10 times) to a unique image. As the pixel
repetition factor is increased, the horizontal resolution of the displayed image will decrease
as shown in the table below.
To test HDMI video pixel repetition:
1. Set up the generator for HDMI output. See “ Setting up the generator for HDMI testing ”
on page 302.
Pixel repetition factor
(image version)
Horizontal resolution
0 2880 pixels/line
1 2560 pixels/line
2 1280 pixels/line
3 853 pixels/line
4 640 pixels/line
5 512 pixels/line
6 427 pixels/line
7 366 pixels/line
8 320 pixels/line
9 284 pixels/line
10 256 pixels/line