9926-xHtoS-OM (V1.2)
9926-XHTOS PRODUCT MANUAL
3-13
Operating Instructions
9926-xHtoS Function Menu List and Descriptions
Framesync
Provides four-path independent video frame sync/delay
offset control and output control/loss of program video
failover selection controls.
Note:
Per-path frame reference offers independent per-path controls (such as video delay offset). However, all paths must be
locked to the same selected reference selection (e.g., frame REF 2 used for each path).
• Select Path For Frame Sync Setup
Activates the Frame Sync user interface (UI) controls for a desired path.
For example, when Path 1 is selected here, the Frame Sync UI is now
active for Path 1. When Path 2 is selected here, now the Frame Sync UI
becomes active for Path 2.
Note: • When settings for a particular path are done (and Path Select is
set for another path), the previous path settings are locked in and
do not change unless manually touched again.
• All paths use the same UI and allow identical independent
control.
• Framesync Enable/Disable Control
Provides master enable/disable of all card framesync functions/controls.
If this control is set to Disabled, all upstream sources
used must be sychronous with each other (such as
upstream ref locked).
Asynchronous unlocked paths in this mode may
experience complete loss of output video/audio and/or
severe video and audio corruption/”hits”.
• Lock Mode Select
Selects Frame Sync functions from the choices shown to the left and
described below.
• Lock to Reference: Output video is locked to selected external
reference received on the frame reference bus. (External reference
signal Ref 1 / Ref 2 are distributed to the card and other cards via
the Ref 1 / Ref 2 buses on the frame.)
Note: If valid reference is not received, the Reference 1 and/or
Reference 2 (as applicable) status indication in the Card Info
status portion of DashBoard™ will indicate Unlocked frame
sync reference error.
• Lock to Input: Uses a selected program video input video signal as
the reference standard.
Note: If Lock to Input is used for framesync, any timing instability
on the input video will result in corresponding instability on
the output video.
• Free Run: Output video is locked to the card’s internal clock.
Output video is not locked to external reference.
If sources on other paths are not locked to the source/
path used for lock to input, Lock To Input should not be
used. For asyncrhonous inputs, setting this control to
use a frame ref 1 or 2 in common is required (selection
made here is ganged for all paths).
If asynchronous paths are set to lock to input where input
is not synced with other inputs, severe video and audio
corruption/”hits” can occur.
• Lock to Input Path Select
Where Lock to Input is selected, selects the input path for which frame
sync will lock to (including lock used by other paths).
Table 3-1
9926-xHtoS Function Menu List — continued
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