Quantum Data 881 - Manual (Page 84)

66 Chapter 2 Testing Video Displays
• When testing for centering, use the Outline images. The detailed methods for
verifying centering with the Outline images (
Outline0, Outline1, Outline2, Outline3 )
are provided in Appendix B, “ Image Reference .”
• When testing resolution with the Grill images, you should be able to see individual
and distinct stripes in all areas of the display at all four resolutions.
• When testing for pixel anomalies, use the Flat, Raster, and Ramp images. Use the
Raster and Flat images to look for pixels that may be stuck on or off, respectively.
The luminance should increase uniformly for the Ramp image. Also look for
sparkles indicating problems with sampling.
• When testing for persistence with the animated images ( Cubes and Persist ), look
for bleeding or trails in the wake of the moving object.
Note: You can customize your generator to run through a specified set of formats and
images automatically or manually by creating test sequences. See Chapter 8, “
Working
with Test Sequences .” for details.
To set up the generator to test a digital HDMI component video HDTV display:
1. Connect an HDMI to HDMI cable between the HDMI OUT (1 or 2) connector on the
generator and the HDMI connector on the television display under test.
2. Identify the high-definition component television formats to test. These formats are
listed after the composite television formats in the generator’s default Source list. Begin
with the first format (720p) in the range of high definition component television formats.
See “
To select a format: ” on page 45.
3. Determine additional formats to test based on the resolution of the television display.
The television product specification sheet will provide information on what resolutions
to test. It is necessary to test only those resolutions with the supported scanning type
(typically interlaced for a high definition television).
4. Determine the images to test. For digital television flat panel displays, you would
typically want to select images to test for pixel anomalies, persistence, photometry, and
resolution-related problems. For more details on which images test these specific
display attributes, see “
Selecting image ” on page 47 or Appendix B, “ Image Reference .”
To activate the HDMI-H interface on the output port:
1. Press the Interface key. A listing of signal interfaces appears on the generator’s
display as shown below.
VGA
HDMI-D CVBS
S-VIDEO
SDI
*
HDMI-H