Ross LDP-8242, User Manual, Page: 47 / 100

LDP-8242 User Manual (Iss. 03) Operating Instructions • 3–13
(continued)
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.
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.)
Source Priority Selects the priority assigned to each of the four supported external
formats, and internal Free Run in the event the preferred source is
unavailable.
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. See example below.)
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
•
•
In this example, Input VITC 1st priority selection selects SDI VITC
(received on SDI input) over reference VITC (received on frame
reference) regardless of video input material source to be processed by
the card.
The selected timecode source is embedded on the SDI video output (in
this example, 720p) using the selected line number. In this example, if
the SDI VITC on the SDI input becomes unavailable, the card then uses
the reference VITC data received on the frame reference.