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Appendix C: Functional Check
13. Give the test capture an alias name that helps you remember the correct
capture and reference to associate it with. For example, NTSC Notch Mobile
Test or PAL Notch Mobile Test.
14. Click OK to accept the changes and exit the menu.
15. Click the Capture soft key to capture the Mobile+ sequence as a test.
16. Click the Measure soft key to start the measurements. The picture quality is
analyzed with respect to the captured reference. The effects of the encoder
and decoder modules are eliminated (de--embedded) from the analysis.
17. Check the Summary results against the typical values for the unimpaired
video test sequence given in Table C--5. The values you get for the PQR and
PSNR numbers can be different, but should be about the same.
Table C- 5: Summary picture quality values for unimpaired sequence compared to
a captured composite reference using Notch processing
Composite Impaired
Sequence Test
Test
NTSC and NTSC no setup
PAL
PQR Luma
0.90
1.40
PQR Luma & Chroma
0.90
1.40
PSNR Luma
48.00
45.00
When the unimpaired composite video test is correct, use the following
procedure to test impaired video sequences. Measuring an impaired test sequence
against the stored reference sequence checks the operation of encoder and
decoder modules with different levels of impairment in the video material.
1. In the Generate Configuration menu, select one of the impaired video test
sequences (for example, Mobile3mbs+).
2. In the Capture Configuration menu, select the correct signal type for the test
(NTSC, NTSC No Set Up, or PAL).
3. Select Mobile+ as the reference sequence.
4. Set Capture As to Test. Give the test capture a meaningful alias name so you
can identify it in a list of captured files. That name is also displayed on the
results displays to identify the results.
5. Click on the Decoder soft key.
6. Select Adaptive Line processing. Adaptive Line should be used in most
cases when testing against the 601 digital reference.
7. Click OK to accept the changes and go to the Capture Configuration menu.
C- 18
PQA300 Picture Quality Analysis System User Manual