Cobalt Digital COMPASS 9392 3G_HD_SD-SDI Dual-Channel Timecode Burn-In Inserter - Manual (Page 40)

3
9392 Function Submenu List and Descriptions
3-16 9392-TCB PRODUCT MANUAL 9392-TCB-OM (V1.3)
Reference Select Control
Provides a master reference selection for both SDI video
channels.
• Reference Select Control Selects a master reference source for both video paths as shown.
Note: • Both program video inputs must be of the same refresh rate (e.g.,
59.94 or 50, or co-related (29.97 or 25), and co-synchronous using
frame sync or similar means. In practical application, both inputs
should be frame-synchronized using a common frame reference,
with the same reference also to be used by this card.
• Reference Selection control must be appropriately set to match
upstream video signal timing:
- If input video is not locked to a frame reference, the 9392 should
be set to lock to the respective input choice (SDI A or SDI B).
- If the video input is locked to a frame reference, the 9392 should
be set to same reference.
• Free Run selection should only be used when no SDI inputs are 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 9392 Function Submenu List — continued
Shown below are appropriate selections of this control for various examples.
9392
SDI A
525i 5994
SDI IN A
SDI IN B
720p 5994
Frame Ref 1
Frame
Sync
Frame
Sync
SDI B
In this example, because both inputs
are upstream frame synced to frame
Reference 1, 9392 can be set for ref
from either SDI input or Reference 1
(however, in this case safest operation
is to use Reference 1).
Note: 9392 Ref 1 or Ref 2 selection
should only be used when
upstream video is also locked to
the same reference.
9392
SDI A
525i 5994
SDI IN A
SDI IN B
720p 5994
Frame Ref 1
Frame
Sync
SDI B
In this example, because SDI IN B is not
frame synced to frame Reference 1,
when SDI IN B is used the 9392 should
be set to ref from the SDI IN B input
video.
9392
SDI IN A
SDI IN B
Frame Ref 1
In this example, the 9392 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
X