Re: Error messages - I'm not sure monotonically increasing is that obscure.
Anybody who has ever been involved with A/D and D/A converters knows all about it, no advanced maths needed.
Unless the spec sheet actually said "Guaranteed monotonic", they needed to be tested for accurate work. It isn't the end of the world (usually) if the jumps are not exactly linear, but they simply must not go backwards.
Biting the hand that feeds IT
