Cobalt Digital COMPASS 9081 HD_SD Frame Sync - Manual (Page 78)

3
Troubleshooting
3-48 9081 PRODUCT MANUAL 9081-OM (V4.6)
DashBoard™ shows
Framesync Status error
message in 9081 Framesync
function submenu screen. Specified Minimum Latency
Frames setting exceeds 9081
card buffer space for the
selected output video format Reduce the Minimum Latency Frames setting
as specified in the error message to correct
the error.
Note: Due to card memory limits, the maximum
available Minimum Latency Frames is
related to the output video format
selected.
For example, with a 1080i 5994 output,
the maximum setting is 5. For a 1080i film
(2398) output, the maximum setting is 3
(due to the increased buffer space needed
for the slower frame rate). Conversely,
greater maximum settings are allowed for
SD formats such as 525i 5994, where the
practical maximum limit is 13.
Video/audio synchronization or
delay noted. Source synchronization
condition Use the Audio Offset from Video control to
compensate for video/audio delay.
Refer to Framesync function submenu tab on
page 3-13 for more information.
Unsmooth, “jerky” motion
observed on video output with
Framesync set to lock to input
video. Incompatible negative H/V
delay value user setting of
Vertical Delay or Hoeizontal
Delay controls Negative vertical or horizontal delay values
(using the controls below) should not be used
when using Input Video mode. To add an
offset in this case, instead apply a positive
value that results in the desired net offset.
Ancillary data (closed captioning,
timecode, Dolby
® metadata,
AFD) not transferred through
9081.
• Control(s) not enabled • Make certain respective control is set to On
or Enabled (as appropriate).
• VANC line number conflict
between two or more
ancillary data items
• Make certain each ancillary data item to be
passed is assigned a unique line number
(see Ancillary Data Line Number Locations
and Ranges on page 3-8).
(+DEC only) Dolby ® data
indicated as Present on Audio
Input Controls Status display
does not process, or cannot be
accessed as an audio source
• Input Select in Dolby
Decoder function selection
not set for pair carrying
locked Dolby
®
data
• Make certain intended channels carrying
locked Dolby
®
data are selected as the input
for the Dolby
®
decoder.
• Upstream metadata not
enabled
• Check upstream device or system and
enable as required.
Table 3-4 Troubleshooting Processing Errors by Symptom — continued
Symptom Error/Condition Corrective Action