Testing Hdmi Video Pixel Repetition (882 Only) - Quantum Data 881 User Manual

Testing HDMI video pixel repetition (882 only)

882 Video Test Instrument User Guide (Rev A.35)
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 882 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.
Pixel repetition factor
(image version)
0
1
2
3
4
5
6
7
8
9
10
To test HDMI video pixel repetition:
1. Set up the 882 for HDMI output. See
Horizontal resolution
2880 pixels/line
2560 pixels/line
1280 pixels/line
853 pixels/line
640 pixels/line
512 pixels/line
427 pixels/line
366 pixels/line
320 pixels/line
284 pixels/line
256 pixels/line
"Setting up the 882 for HDMI testing" on page 259.
291