Cobalt Digital COMPASS 9391 3G_HD_SD-SDI Timecode Burn-In Inserter - Manual (Page 40)

3
9391 Function Submenu List and Descriptions
3-16 9391-TCB PRODUCT MANUAL 9391-TCB-OM (V1.3)
Reference Select Control
Provides a master reference selection for SDI video
processed (burn-in) channel.
• Reference Select Control Selects a master reference source for processed video path as shown.
Note: • Reference Selection control must be appropriately set to match
upstream video signal timing:
- If input video is not locked to a frame reference, the 9391 should
be set to lock to input video (SDI A).
- If the video input is locked to a frame reference, the 9391 should
be set to same reference.
• Free Run selection should only be used when an SDI input is not to
be used. This selection is valid only for internally generated flat
field outputs.
• A DashBoard Reference Status indication is provided that alerts to
a missing reference where a reference has been selected.
However, the status indication will not detect improper reference
usage violating the conditions specified above.
Table 3-1 9391 Function Submenu List — continued
Shown below are appropriate selections of this control for various examples.
9391
SDI A
525i 5994
SDI IN A
Frame Ref 1
Frame
Sync
In this example, because the input is
upstream frame synced to frame
Reference 1, 9391 can be set for ref
from either SDI input or Reference 1
(however, in this case safest operation
is to use Reference 1).
Note: 9391 Ref 1 or Ref 2 selection
should only be used when
upstream video is also locked to
the same reference.
9391
SDI A
525i 5994
SDI IN A
Frame Ref 1
Frame
Sync
In this example, because SDI IN A is not
frame synced to frame Reference 1,
when SDI IN A is used the 9391 should
be set to ref from the SDI IN A input
video.
9391
SDI IN A
Frame Ref 1
In this example, the 9391 is generating
an internal flat field. Since no external
timing need be associated with the flat
field, the Free Run (internal) setting
can be used.
However, if an external frame
reference is available, it is safest to
use the external Ref 1 or Ref 2 setting
as appropriate.
X