External Video Audio Sync

Hi All,
I use an external monitor running though a Canopus analog video -> DV breakout box. When I have external video turned off, everything is perfectly in sync on the canvas. When I turn external video to 'all frames,' the canvas is off by a few frames.
I understand that there will be a slight delay when I'm looking at the external monitor since the audio is coming from the computers speakers. However, why does the canvas become slightly out of sync? What does one have to do with the other?
I found this line in another post:
"check the frame offset in the system settings, F/W is usually a 4 frame offset."
I'm not in front of my FCP system right now, but is this something I should look into? What is frame offset?
Thanks,
~ Jim

When you get to your system...go to Final Cut Pro / System Settings / Playback Controls tab.
Play around with the frame offset (FCP default is 4), until your computer monitor and external monitor are in sync.
...from FCS1 manual 1, p220...
"Note: Depending on your external monitor configuration, you may need to experiment with frame offset values to synchronize the external monitor and the computer display"
Running through the Canopus may introduce a different latency than the default.
K

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