Cobalt Digital COMPASS 9081 HD_SD Frame Sync - Manual (Page 55)

9081-OM (V4.6) 9081 PRODUCT MANUAL 3-25
Operating Instructions
9081 Function Submenu List and Descriptions
Audio LTC and RS-485 LTC controls described below only appear on cards with +LTC licensed optional
feature. This feature allows bidirectional conversion between VBI-based timecode and LTC timecode on audio and RS-485
interfaces.
• Timecode Source Status Displays Displays the current status and contents of the three supported 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, Unlocked is displayed.
• RS-485 Port LTC Control Allows RS-485 port to be used to receive LTC, or send LTC over RS-485
port as follows:
• If RS-485 LTC is to be received via the shared RS-485 port, set the
RS-485 Port Function control to LTC In.
• If RS-485 LTC is to be outputted via the shared RS-485 port, set
the RS-485 Port Function control to LTC Output. The timecode
string carried on the LTC output is that selected using the Source
Priority controls described on the next page.
• Source Priority As described here, selects the priority assigned to each of the four
supported formats in the event the preferred source is unavailable.
Each of the four Source Priority selection lists allows assignment of
source priority from the following choices:
Source Priority 1 thru Source Priority 4 select the preferred format to be
used in descending order (i.e., Source Priority 2 selects the second-most
preferred format, and so on.
• Output Status Display Displays the current content and source being used for the timecode data
as follows:
• Output status OK (in this example, SDI VITC timecode received and
outputted).
• Timecode Insertion button set to Disabled; output insertion disabled.
Note: • If timecode is not available from Source Priority selections
performed, timecode on output reverts to Free Run (internal
count) mode.
• Because the 1’s digit of the display Frames counter goes from 0 to
29, the fractional digit (along with the 1’s digit) indicates frame
count as follows:
0.0 Frame 0
0.1 Frame 1
1.0 Frame 2
1.1 Frame 3
•
•
•
29.1 Frame 59
Table 3-2 9081 Function Submenu List — continued