Table of Contents
Advertisement
7700 MultiFrame Manual
7711HDC HD Broadcast Quality Down Converter
6.3.3.2. Setting the Vertical Phase of the Output Video – 525 Line Video
Video
525 V Phase Offset
0 to 524
0
6.3.3.3. Setting the Horizontal Phase of the Output Video – 525 Line Video
Video
525 H Phase Offset
0 to 1715
0
6.3.3.4. Setting the Vertical Phase of the Output Video – 625 Line Video
Video
625 V Phase Offset
0 to 624
0
7711HDC - 18
With this control, you can set the vertical timing of the output video with
respect to the NTSC genlock reference input when operating with a 525 line
video output. Setting this control to 0 keeps the output video in time with the
Genlock reference or incoming video if genlock is missing.
Increasing the value will delay the output video in one-line increments. In
order to advance the vertical timing of the output video with respect to the
genlock video, set the control to 525 minus the number of lines that you
wish to advance the output video. (E.g. to advance the output video 5 lines
set the value to 520.) 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 HD input and the video output. See Table
6-1 and Table 6-2 for the minimum and maximum delays possible.
With this control, you can set the horizontal timing of the output video with
respect to the NTSC genlock reference input when operating with a 525 line
video output. Setting this control to 0 keeps the output video in time with the
Genlock 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 1716 minus the number of samples that
you wish to advance the output video. (E.g. to advance the output video 5
samples set the value to 1711.) When increasing the H Phase Offset value
causes it to go beyond the limit of the line buffer, the H Phase Offset will
wrap to the beginning of the line buffer, resulting in a change of one line of
throughput delay between the HD input and the video output. See Table
6-1 and Table 6-2 for the minimum and maximum delays possible.
With this control, you can set the vertical timing of the output video with
respect to the PAL genlock reference input when operating in a 625 line
video output. Setting this control to 0 keeps the output video in time with the
Genlock reference.
Increasing the value will delay the output video in one-line increments. In
order to advance the output video with respect to the genlock video; set the
control to 625 minus the number of lines that you wish to advance the
output video. (E.g. to advance the output video 5 lines set the value to 620.)
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 HD input and the video output. See Table 6-1 and Table 6-2
for the minimum and maximum delays possible.
Revision 1.1
Advertisement
Table of Contents
