Thanks for your reply, Timo.
What do say about Red One? Does Red One have processing delay?
However, my problem is that my SD 702 and Red One with ACL203 basically have the same time code most of the time, so in this case, I don't feel it has any processing delay issue. But, without any hint, sometimes, the SD702 timecode will be 1 frame behind the Red One timecode. And it is just always one frame behind, no other possibility, in other words, either matched or SD one frame behind.
Yet, it creates us enough trouble, as we need to check every single take, and we are making documentary films.
Thanks.
King