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Synergy Q/MD Engineering Manual (v9.1 MD) Output Configuration • 8–21
5. Use the
Pass/Strip
knob to select either
Pass
or
Strip
for the line selected by the top
Knob. On the bar graph, the box representing the selected line will change color to show
Passed or Stripped, as per the legend.
In the Horizontal Blanking case, stripping removes any embedded audio data in the
blanking area of all the video.
6. Use the Image Starts knob to select the image start point. As the line number
increases, the bar graph displays additional boxes with line numbers to reflect this
change. You can then pass or strip these lines as required. Refer to the following
diagram.
The bottom knob controls the line number that the switcher considers as the first line of
active video (i.e. the line on which the image starts). By default this is the first line after
the vertical blanking. In some cases it may be desirable to protect the first few lines of
normal video from being modified by the switcher. For example: In 480i systems, closed
captioning may be present a few lines past the vertical blanking.
• To prevent video effects such as keying from destroying the closed captioning of a
background selection, use the
Image Starts knob to adjust the first line number so
it is after the closed caption line. The bar graph will now display additional boxes
for the lines that the switcher will protect as shown in the figure below.
Ancillary Data Menu with Additional Lines Stripped
7. Press the Default Anc Data button to restore the ancillary data setting to their default
values for the current video format.
This completes the procedure for selecting ancillary data parameters.
Contact Ross Video Technical Support for any additional assistance with Ancillary Data setup.
Note If you are working in a progressive video format, you will select only a
single line representing a frame.
Note All non-image (vertical blanking) lines and the horizontal blanking
should be set to pass if embedded audio is to be passed.
The Switching line for interlaced video formats (line 10 in 480i
systems and line 6 in 576i systems) is always stripped and cannot be
changed.