Harmonic ProView 2900 Installation Manual page 230

Appendix C: Aspect ratio Configuration
Line1 – Video line into which the ProView 2900 inserts the generated WSS signal (see WSS
explanation in Section 9.3 for further details).
C.1.2 Monitor Aspect Ratio
This parameter informs the Conversion Machine of the destination monitor's A/R. This is one
of two parameter values which the Conversion Machine needs for its operation (see Figure
C-1).
The available options are: VIDEO SOURCE, 16:9, 16:9 BOX, and 4:3 (see Monitor Aspect
Ratio explanation in Section 9.2 for further details).
C.1.3 Interpolation
This parameter sets the method of interpolation which the Conversion Machine will use when
converting the Video Stream.
C.2 Table of Conversions
After setting the values of WSS, Monitor Aspect Ratio, and Interpolation, the
ProView 2900 receives all required A/R information for re-creating the image.
Table C-1 and Table C-2 details the format of the image after conversion in all ProView 2900
available settings combinations, and depending upon the incoming signal's A/R.
The resulting image is affected by the combination of four variables displayed in the A/R
Conversion Table:
The actual Video Stream A/R (Stream column)
•
Destination Monitor A/R (Monitor Column)
•
Interpolation value, set in the Conversion Machine (Interpolation Column)
•
Monitor Aspect Ratio value, set in the Conversion Machine (WSS Column)
•
The following Video Bar figures are used in the table to demonstrate the image format
changes.
Figure C-2 illustrates a normal 4:3 Video image
Figure C-3 illustrates a normal 16:9 Video image
© Harmonic Inc. Manual p/n 101543/Ver 1.0
Figure C-2: Normal 4:3 Aspect Ratio
Figure C-3: Normal 16:9 Aspect Ratio
C-2 ProView 2900 Series/SW Version 1.94