Timecode Source
Previzion automatically searches for timecode in the following order:
- Timecode embedded in the HDSDI VANC metadata
- LTC timecode embedded in the incoming audio data
If neither of these options is found, Previzion will generate reference timecode internally.
To read the analog LTC timecode format into the Previzion digital audio inputs, a converter must be used such as the AJA HD10AMA or the AJA ADA4.
Settings for the ADA4:
- LTC is routed into Input B
- Output A of the ADA4 is routed into the AES Audio 1 port of the Previzion breakout box.
- All DIP switches on the ADA 4 are set to OFF.
Settings for the HD10AMA:
- LTC is routed into Input B
Timecode Channel
Under the Takes panel, set the LTC Source to the correct setting:
- AES1 Pair if using the AJA ADA4 plugged into the AES Audio 1 port
- Embedded Pair 0 if using the AJA HD10AMA to embed timecode directly into Channel 0 of the HDSDI video
LTC Setup
To check that LTC is present without running Previzion, select Start->All Programs->Merlin->BRec1 and click the LTC button as highlighted above.
If Previzion is already running, do not start BRec, as it will be unable to connect to the video input board.