How to I use the Digital Timepiece to slave my computer based sequencer/DAW to a VCR tape?
The Digital Timepiece manual contains specific setup information on this subject. Use this article in tandem with related sections in the manual to achieve sync.
The DTP can slave to SMPTE/LTC from an audio time code track on a video deck. It can use the SMPTE/LTC as both a positional and speed reference. (It can also use the video out of the VCR as a speed reference in tandem with the SMPTE/LTC connection).
Another option is to use the Sony 9-pin sync format if your VCR is equipped with this option.
When the DTP resolves to LTC, it automatically regenerates timecode on all other formats, including MTC. The easiest way to get your computer system to sync to the the VCR is as follows:
* Be sure that all “players” are set to the same frame rate (30, 30 drop, 29.9, etc) and sample rate (44.1k, 48k, etc)
1. Take the LTC/Audio track out of the VCR to the SMPTE/LTC in on the DTP.
2. Set the DTP SOURCE to SMPTE/LTC
3. Connect MIDI IN & OUT of the DTP to the MIDI input of your computer’s MIDI interface.
4. Set your sequencing application to slave to MTC from the midi port where the DTP is also connected.
Since MTC does not provide a “speed” reference, it is recommended that you use word clock, spdif or another clock source as well. Connect word clock out, spdif, video, etc from the DTP to the compatible input on your computers respective input.
Adding a “speed reference” makes sure that all players (VCR, sequencer, etc) play at the same speed; without which, synchronized items would start together, but drift apart as the continued playing.
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