Setting Driver Properties
22
ViewCast
There are controls to set the background markings for 75 % or 100 % signal levels, and for eight or
seven bars – so that the markings correspond to the type of color bars your signal generator is
making.
The Help button on the applet brings up a message box with an alternate and slightly more technical
description.
Figure 14. VideoGraph utility
VbiGraph
The VbiGraph utility (Figure 15) opens an applet that displays the raw waveforms of the video’s
Vertical Blanking Interval (VBI). The information on these lines may include closed captions (CC),
wide screen signaling (WSS), vertical interval timecode (VITC), and teletext. The applet is useful as a
diagnostic if the expected data is not being decoded – you can see if the required signal is there at
all, whether it is in spec, and which line it is on.
The controls select the field and line to be displayed. The only time you need the
Update
button is
when you switch between 525-line and 625-line video standards.
Summary of Contents for Osprey PCI
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