They rotate about every nine seconds. If they stop rotating (stall) you lose pics. If you don't have any pics and push the green button you will see all zeros. I think from memory you get the odds and evens on all the standard def channels and the doubles for the HD and FBO channels. Not sure if you can control them or not. I did try to copy them once to see if there was a sequence over a given time. Never did answer that question, I gave up. I did pull up something once where i could input control words but can't remember where. Rainy day job to get back to.
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