36 Chapter 2 Testing Video Displays
Testing analog composite video SDTV (CE) CRTs
This section describes how to test CRT composite televisions with analog composite video
inputs.
To test analog composite video SDTV:
1. Use a standard coax cable to connect the TV BNC connector on the generator with the
display under test.
Or, use an S-video cable to connect the SVIDEO connector on the generator with the
S-Video input on the display under test.
2. (Optional) Place the generator in Analog Friendly mode by holding down the R and B
keys while starting the generator (see “Special operating modes” on page 18).
The Analog Friendly mode ensures that the generator will output an analog signal.
3. 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.
4. 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 images” on page 28 or Appendix B, “Image Reference.”
Verify the test set-up:
1. Using the Format knob, select the first NTSC or PAL format.
Alternatively, you can load the format with the following command:
FMTL format_name; FMTU
2. Using the Image knob, select a suitable image such as SMPTEBar. Verify that the
generator is sending a valid signal to the display and that the display is presenting it.
Alternatively, you can load the image with the following command:
IMGL SMPTEBar; IMGU
Test the display:
1. Using the Format knob, select the first test format.
2. Using the Image knob, select the first test image.
Note: You can customize your generator to run through a specified set of f ormats and
images automatically or manually by creating test sequences. See “Creating a test
sequence” on page 87 for details.
3. Repeat steps 1 and 2 for all formats and test images. Use the following guidelines to
verify proper operation: