Apexi turbo timer question

I had a Apexi turbo timer(the pen type one) The timer features a A/F ratio, O2, Battery voltage, and shut off timer.
My questions is what would be the proper adjustment be for the A/F and the O2? I was messing around with it and wasn't sure if I adjusted it on accident or not, I just want to make sure. The manual has a chart of the options to adjust it to but I just didn't want to adjust it to anything and do it wrong. Sorry I don't have the chart with me now so I can't give an example of what the chart says.
Any help would be appreciated. Thanks!

I had a Apexi turbo timer(the pen type one) The timer features a A/F ratio, O2, Battery voltage, and shut off timer.
My questions is what would be the proper adjustment be for the A/F and the O2? I was messing around with it and wasn't sure if I adjusted it on accident or not, I just want to make sure. The manual has a chart of the options to adjust it to but I just didn't want to adjust it to anything and do it wrong. Sorry I don't have the chart with me now so I can't give an example of what the chart says.
Any help would be appreciated. Thanks!

That doesn't actually change the A/F and O2. What you can do is set "alarm limits" on the TT that makes the number flash if it gets above or below a certain threshold. It's nothing to worry about and what it reports is a very rough estimate at best for A/F. Not sure how accurate the O2 is.

That doesn't actually change the A/F and O2. What you can do is set "alarm limits" on the TT that makes the number flash if it gets above or below a certain threshold. It's nothing to worry about and what it reports is a very rough estimate at best for A/F. Not sure how accurate the O2 is.

Right on! It makes alot more sense to me now...thanks!