As I haven't a clue what DSB is, I can't comment.
How much time did either johnlee or Seeker save by not typing the full words.
Thanks for you contribution, FWIW(For What It's Worth). I guess it is confirmation (6 weeks after the event) that the documented procedure works.
DSB (Days Since Birth) is a field of that name in the XML(eXtended Markup Language) File output by the ENVI(the acronym escapes me) monitor. BTW(By the way), if you had cared to google "Current Cost DSB" rater than making snide comment, you would have seen the explanation in the first non-advertisement entry . The implication is that you can't make an old monitor look like new.
RTFM(Read The Manual) is a time-honored IT(Information Technology) term for "look in the documentation". If you have a profane version, it is in your own mind so feel free to keep it to yourself.
You may have gathered that I don't particularly care whether you consider my answer lacking in some way. I answer to the best of my ability to an assumed level of knowledge of this audience. If I am wrong feel free to correct me. If you need more information just ask. No need for rants. The approach of senility does not provide anyone with an excuse for ranting or snide comments.
Having got that peeve off my chest --- Welcome to this forum and I hope you continue to contribute.