Cobalt Digital Inc 9903-UDX-ADDA Product Manual page 46

3
Table 3-2 9903-UDX-ADDA Function Menu List — continued
• 3:2 Alignment Optimization Selector
• Alignment Offset Selector
• Low-Latency PSF to Interlaced Control
3-14
9903-UDX-ADDA Function Menu List and Descriptions
(continued)
Provides selection to optimize 3:2 pulldown conversion where timecode
or other selections shown are to be relied upon to indicate frame
transitions.
In the example below, A-frame is aligned using 6Hz pulse imported via
GPI.
fld fld fld fld fld
A-Frame alignment to 6Hz pulse via GPI
Note: If input video timecode or other marker cannot be relied upon for
accurate and precise frame marking, leave control set to Free Run.
Based on alignment selection selected above, offsets A-frame by amount
selected.
Allows PsF to Interlaced conversions bypassing Scaler ARC and Pan
controls to enhance processing latency performance over that available
in normal mode.
• Disabled: This is card "normal" setting that locks out the
low-latency processing function. Normal scaler processing latency
(along with full ARC and pan control) is available with this setting.
• Enabled (Use Both Fields): This setting provides a highest-quality
low-latency setting, and can be expected to provide an approximate
latency of 12 msec for North American frame rates.
• Enabled (Use Top Field): This setting provides the lowest
available latency with a slight reduction of motion smoothness due
to alignment not waiting for both fields. This setting can be expected
to provide an approximate latency of 6 msec for North American
frame rates.
Note: When either low latency mode is enabled, image ARC scaling and/
or panning is locked out.
9903-UDX-ADDA PRODUCT MANUAL
fld fld fld fld fld
9903UDXADDA-OM (V1.5)