7800/7700 MultiFrame Manual
7814 Series Dual HDTV Up/Down/Cross Converters
Page - 42 Revision 1.1.3
7.1.1.8. Vertical Phase Offset
With this control, you can set the vertical timing of the output video with respect to the reference input set
by the Reference Select control. There are separate settings of V phase offset for each output video type.
Setting this control to zero keeps the output video frame aligned with the reference.
Increasing the value will delay the output video in one-line increments of the output video standard. In
order to advance the vertical timing of the output video with respect to the reference, set the control to the
maximum total number of lines of the output video minus the number of lines that you wish to advance the
output video. (I.e. for 1080i/59.94 output video, the total number of lines is 1125, so to advance the
output video five lines set the value to 1120.) When increasing the V Phase Offset value causes it to go
beyond the limit of the frame buffer, the V Phase Offset will wrap to the beginning of the frame buffer,
resulting in a change of one frame of throughput delay between the SD input and the video output.
Note: The slider is available for selecting H and V Phase Offsets. To increment, click on
the right hand side of the slider. To decrement click on the left hand side of the slider.
The slider can also be selected and dragged across the available range if gross
movement is desired.
7.1.1.9. Horizontal Phase Offset
With this control, you can set the horizontal timing of the output video with respect to the reference input
set by the Reference Select control. There are separate settings of H phase offset for each output video
type. Setting this control to zero keeps the output video line aligned with the reference.
Increasing the value will delay the output video in one-sample increments. In order to advance the
horizontal timing of the output video with respect to the genlock video, set the control to the maximum
number of samples per line for the output video standard minus the number of samples that you wish to
advance the output video. (I.e. for 1080i/59.94 input video the total number of samples per line is 2200,
so to advance the output video five samples set the value to 2195.)
7.1.1.10. Loss of Video Mode
This control defines the action that will be taken when the input video is lost. You can choose to freeze the
output video on the last good frame of input video, force the output video to black or force the output video
to blue. The Loss of Video Mode drop down menu appears as follows:
7.1.1.11. Force Freeze Frame
This control Enables or Disables Force Freeze Frame. It is a manual user control to freeze the output of
the card. When off the module will run as expected. When enabled the output picture will freeze
7.1.1.12. User Added Video Delay
This slider control is used to add additional user delay to the video. To add additional frames of video
delay slide the slider to the right. Up to an additional 12 frames of delay can be added.
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