GUIDE TO INSTALLATION AND OPERATION
XVP-3901 |
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format, and is measured starting from the edges of the displayed image, as shown in the following table. Masks can
cover a minimum of 25% of the active area.
Note
: all masks are adjusted in steps of 2 pixels or 2 lines.
Available Presets for various AFD Mode selections (16:9
output)
5.4.2 Timing
tab
The Timing tab provides access to timing adjustments which
affect the signal outputs. There are two slider controls, each
with a data reporting box which shows the current value, and
into which values can be typed directly. The total delay is
reported at the top of the window.
Vertical (lines)
: With this adjustment, a value ranging from
–
16
to
+15
lines compared to the reference or the processing
delay, may be set. This adjustment can be used in
conjunction with the horizontal timing adjustment.
Horizontal (µs):
With this adjustment, a value ranging from
zero to the equivalent of 1 horizontal line in the current
operating format compared to the reference or the frame
boundary may be set.
Additional Frame Delay
: This parameter affects the overall processing delay of the card. It adds supplemental frame
delay to the current processing delay. This parameter will add a delay ranging from 0 to 15 interlaced frames (steps of
33 ms in 59.94 Hz and 40 ms in 50 Hz) to the current processing delay. Without a reference, the normal processing
delay is 1 frame. You can extend this delay up to16 frames if the additional delay is 15. With a reference, up to 15
frames can be added to the frame sync delay which depends on the timings between the input and the reference.
Note that, in order to compensate for the processing delay of a Dolby-E/Dolby Digital decoder or a Dolby-E encoder
installed on the XVP-3901 or on the companion audio card, the additional frame delay must be set to at least one (1)
frame. On the other hand, if a Dolby Digital encoder is installed, the additional frame delay must be set to at least six
(6) frames for 59.94 Hz formats and at least five (5) frames for 50 Hz formats.
5.4.3 Advanced
tab
The
Advanced
tab provides controls over the type and level of
detail enhancement that will be performed, and the color of
the mask. The panel differs between 3G/HD output and SD
output
5.4.3.1
Image Processing
section
MPEG Preprocessor Mode:
This control changes the
functionality of the detail enhancer. When MPEG
preprocessor is activated (‘
ON’
), the adaptive detail enhancer
will use a psycho-visual model to increase the level of details
and the sharpness of edges without adding high frequency
content that may be difficult to encode at a lower bit rate on a
downstream MPEG encoder.
Figure 5.13
Video Output 3G/HD - Timing
Figure 5.14
Video Output 3G/HD – Advanced tab
