3
BBG-1040-ACO Function Menu List and Descriptions
3-14
BBG-1040-ACO PRODUCT MANUAL
BBG1040ACO-OM (V1.4)
(continued)
Audio LTC controls described below only appear on devices with +LTC licensed optional feature. This feature
allows audio LTC from an audio channel to be used as a timecode source, with conversion to a selected SMPTE 12M format on the
output video.
• Timecode Source Status Displays
Displays the current status and contents of the four supported external
timecode formats shown to the left.
• If a format is receiving timecode data, the current content (timecode
running count and line number) is displayed.
• If a format is not receiving timecode data, Not Present is displayed.
• Audio LTC Source and Mute Controls
(+LTC option only)
LTC Input control selects an input audio channel when audio LTC is to be
used as a source.
Mute LTC Audio control allows timecode using LTC audio sources to
freeze as follows:
• When set to Enabled and input timecode is lost, timecode insertion is
disabled.
• When set to Disabled and input timecode is lost, timecode output
reverts to next priority selection.
Note: If muting upon loss of a particular input format is desired, set all
Source Priority 1 thru 4 to that particular input format. If this is not done,
the failover timecode selection may substitute another format choice for
the format not being received.
• Incoming ATC Packet Removal Control
Enables or disables removal of existing input video ATC timecode packets
from the output. This allows removal of undesired existing timecodes from
the output, resulting in a “clean slate” where only desired timecodes are
then re-inserted into the output. (For example, if both SDI ATC_VITC and
ATC_LTC are present on the input video, and only ATC_LTC is desired,
using the Removal control will remove both timecodes from the output.
The ATC_LTC timecode by itself can then be re-inserted on the output
using the other controls discussed here.)
Note: Set this control to Enabled if Free-Run timecode is to be used. If
incoming packets are not removed, output embedded SMPTE timecode
may alternate between free-run and embedded SMPTE timecode values.
Table 3-2
BBG-1040-ACO Function Menu List — continued