Quantum-data 881 Manual de usuario descargar pdf (Pagina 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

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Quantum-data 881 Manual de usuario Pagina 70