Quantum Data 881 - Manual (Page 70)

52 Chapter 2 Testing Video Displays
Testing analog computer (IT) CRTs
This section describes how to test analog computer (IT) displays. The display responses
shown as examples in the procedures use the 882C. However you can also test analog
composite with the 882D using the same format and image selections. The interface
selection is different and is noted.
To set up the generator to test an analog computer CRT:
1. Connect a standard VGA cable between the VGA connector on the generator and the
VGA connector on the display under test.
2. Calibrate the generator in accordance with the procedures described in “ Calibrating
signal level ” on page 87.
3. Determine the formats to test (see “ Setting Source list of formats ” on page 43).
4. Determine additional formats to test based on the resolution of the display. The VESA
formats are shown below:
5. Determine the images to test. For analog CRTs, you typically want to select images to
test for geometry, focusing, photometry, resolution, cross talk, EMI, and regulation
characteristics. For more details on what images test these specific display attributes,
see “
Selecting image ” on page 47 or Appendix B, “ Image Reference .”
To activate the VGA interface on the output port:
1. Press the Interface key to access the list of interfaces. A listing of signal interfaces
appears on the generator’s display as shown below.
Standard Quantum Data format name
VGA DMT06xx
SVGA DMT08xx
XGA DMT10xx
SXGA DMT12xx
UXGA DMT16xx
QXGA DMT20xx
QSXBA DMT25xx
VGA
HDMI-D CVBS
S-VIDEO
SDI
*
HDMI-H