Testing Analog Composite Video Sdtv (Ce) Crts - Quantum Data 881 User Manual

Testing analog composite video SDTV (CE) CRTs

Chapter 2 Testing Video Displays
58
This section describes how to test CRT composite televisions with analog composite video
inputs. The display responses shown as examples in the procedures use the 882C.
However you can also test analog composite with the 882D or 882E using the same
interface, format and image selections.
To set up the 882 to test analog composite video SDTV:
1. Connect a standard coax cable between the CVBS connector on the 882 and the
display under test.
Or, connect an S-video cable between the S-VIDEO connector on the 882 and the
S-Video input on the display under test.
2. Determine which composite television standard you need, such as NTSC or PAL, and
then select the formats compatible with the standard. Typically, you would test all the
formats in the family of formats for a standard.
3. 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,
To activate the CVBS or S-Video interface on the output port:
1. Press the Interface key. A listing of signal interfaces appears on the 882's display as
shown below.
VGA
*
HDMI-D
HDMI-H
2. Choose either the CVBS or S-VIDEO item by pressing the adjacent soft key. The
interface is activated and the port outputs the currently selected image and format. An
asterisk is shown beside the selected interface CVBS or S-VIDEO.
Alternatively, to activate the interface through the command line interface, enter the
following commands:
XVSI 6 // Selects the CVBS interface
or
XVSI 5 // Selects the S-VIDEO interface
ALLU // Applies the interface setting to the 882
To verify the test set-up:
1. Press the Source key to access the list of formats.
CVBS
S-VIDEO
SDI
"Image Reference."