imwright1985
Contributor
i dont know if it is a glitch or if your pulse may have given off a false reading. It could be picking up on multiple things causing an inaccuracy from the positioning of the HR monitor or could just be an interferance issue, I dont know what the heart rate sampling is on that either but it could have picked up a quick spike from being more active underwater(if smaller intervals wouldnt average as smoothly as other HR monitors) for a point right around when it spiked or could just be an equipment issue. Either way i would take it to dealer or call scubapro and see if there are problems occasionally and what possible steps to reduce problems would be or if you could exchange it. As for the NDL's being different it is in part because the SP monitors workload actively so with HR being higher it would cut NDL lower