Ross LDP-8242, User Manual, Page: 52 / 100

3–18 • Operating Instructions LDP-8242 User Manual (Iss. 03)
(continued)
Pattern Select Provides a choice of standard technical patterns (shown to the left) when
Test Pattern is invoked.
Output Video Reference Offset Controls With framesync enabled, provides the following controls for offsetting the
output video from the reference:
• Vertical (Lines) – sets vertical delay (in number of lines of output
video) between the output video and the frame sync reference.
(Positive values provide delay; negative values provide advance)
(Range is -1124 thru 1124 lines; null = 0 lines.)
• Horizontal (ms) – sets horizontal delay (in ms of output video)
between the output video and the frame sync reference. (Positive
values provide delay; negative values provide advance)
(Range is -64 thru 64 msec; null = 0.000 msec.)
Note : Offset advance is accomplished by hold-off of the
reference-directed release of the frame, thereby effectively advancing the
program video relative to the reference.
Minimum Latency Frames Control
Minimum Latency Frames Control
When Framesync is enabled, specifies the smallest amount of latency
allowed by the frame sync (latency measurement in output video frames).
The frame sync will not output a frame unless the specified number of
frames are captured in the buffer. The operational latency of the frame
sync is always between the specified minimum latency and
minimum latency plus one frame (not one field).
(Maximum range is 0 to 16.)
Note : Due to card memory limits, the maximum available Minimum
Latency Frames is related to the output video format selected.
For example, with a 525i59.94 output, the practical maximum limit is 13.
When using this control, be sure to check the Framesync Status display
as follows:
• Latency frames selection within limits.
• Latency frames selection exceeds limits.