Some time ago I wrote about Aging Mode and how people can check their laser hours and laser output levels. I check my laser hours on the first of every month, just because I can do it. I also check laser output levels every 6 months. The laser output level is the T21 and T22 in Aging Mode. The critical numbers really are the T2 hours and the T22 output levels. These are the sacd laser numbers. I just checked mine. In the past 6 months I put 330 hours on my sacd laser. The T22 output level was unchanged.
I would urge every user to keep track of their sacd laser output level, the T22 check. It is simple and easy to do.