LC2000/LC2000-IQ/LC4000/LC4000-IQ
Channel Operation Menus
Issue 1 Rev 6
Page 84
© 2015 SAM
8.8.3 Mode
•
Follow Input:
The input timecode is read every frame and the actual time elapsed
since timecode 00:00:00:00 is calculated. This elapsed time is then converted into an
output timecode that matches the output video frame, and inserted into the output.
There is an additional process to compensate for clock offset between in and out,
which will generate repeated or skipped timecodes as necessary, just as happens
when synchronizing at the same standard. If the output is clock-locked to the input,
this process has no effect.
•
Generate:
The unit generates the output timecode internally to match the output
video standard. You can specify a start time in the Timecode Entry field. See “Section
8.8.10 Timecode Entry” below.
•
Input Trigger:
The unit generates the output timecode from a specified input
timecode trigger. You can specify a trigger and start time in the Input Trigger Entry
and Output Timecode Entry fields.
8.8.4 VITC Enable
VITC Enable embeds the VITC in the SD output.
8.8.5 Output Line (525)
The Output Line (525) slider selects the output line on which VITC is placed when the channel
output is 525. The range is from line 11 to line 17 in one-line steps. The default is line 14.
8.8.6 Output Line (625)
The Output Line (625) slider selects the output line on which VITC is placed when the channel
output is 625. The range is from line 7 to line 20 in one-line steps. The default is line 19.
8.8.7 Output Line Status
Output Line Status shows the actual output line number on which SD VITC packets are
inserted. If no line number is selected, “OFF” is displayed.
8.8.8 Input Trigger Entry
In the Input Trigger Entry field you can enter a value to specify when the output timecode
starts. Once set, the output timecode will start when the video source input timecode reaches
the trigger value set in the Input Trigger Entry field.
Note:
This control only enables the embedding of VITC. In order for VITC to be present in the
output SD video, a valid timecode must be detected at the input when in Follow Input
mode, or when Generate mode is selected.
Note:
The line number stated is the first of the two lines used to embed VITC. The second line
will always be the line se 2. For example, the default line for 525 is 14. Therefore
VITC will be embedded on lines 14 and 16.
Note:
If the line selected is already in use, the VANC embedding hierarchy will place the SD VITC
packet on the nearest available line.
