Unfortunately that is not a useful solution for my needs. I need a delay before re-arming the trigger to catch the next event, whenever it might occur. Using a logic trigger with a square wave input would miss randomly-timed triggers half the time (while the square wave is low).
It seems like this could be implemented in software with, perhaps, some reasonable loss of precision. In "trigger holdoff mode," for example, PicoScope would be set to "Repeating" but secretly tell the instrument "Single"...after capturing a triggered event, wait the specified delay, then secretly tell the instrument "Run" again (still in Single mode). This would not be very precise, as it would be dependent on the host PC and USB bus for timing, but it would be usable for some situations.
Thanks for your time and input.