M B wrote: > I am trying to switch quickly between inputs, but I think the 878 can't > "lock on" to the new signal quickly enough, and sometimes messes up the sync > when I swich too fast. I am thinking of using 4 LM1881 sync separators, > connecting them to GPIO, and using them as external sync. Any idea if the > 878 can use an external sync? > > I was looking at the Remote Vision card, and it has one 1881 on it.. any > ideas what it is used for, and how this helps? Any thoughts appreciated! You could use a box like the EverPlex 4BQ that combines 4 video inputs into one output with a picture in each quadrant. It's used in small shops for security cameras. Or you could genlock your cameras and switch them with a 4066 and a PIC for a lot less. It should not be too hard to program a PIC to switch inputs on vertical sync. Martin
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