Dayton Audio OmniMic V2 Precision Measurement System - Manual (Page 26)

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In the form, you choose:

the frequency range over which you wish to have automatic optimization occur

the type of target curve: a flat line with a specified slope; or a curve from a text FRD file (which you can select or
even create on the fly from an included editor). The target curve will appear on the Frequency Response form in
a thicker grey line.

the amount (in dB) to offset the target curve. You would normally set this one (visually, watching the grey line and
the red Average curve) to the position that requires the least work of the equalizers to approach the target curve.
The offset will normally be based on the response within the optimization range, you can also choose to "lock" it
so that frequency range selection doesn't further affect it or so that the same target can be used for different
speaker channels.

the maximum amount of boost you want the optimizer to attemp to use, to not overstress power amplifiers or
drivers in case of a severe response suckout. The limit can be specified as a fixed value maximum boost (for all
filters combined at any frequency) or as an FRD curve from a file (which you can again load or create on the fly).

you can also specify the maximum boost you want to have used by any individual filter section.
There are two buttons at the bottom of the form, "Reset Auto values and Opt" and "Optimize from current values".
You would use the first if you want OmniMic to distribute the available filters over the range and start a new
optimization. You can use the second when the current settings (from a previous optimization or from manually
set values of certain sections) are to be used as the starting point for further optimization. You can interrupt
optimization at any time by using the "Stop Optimizing" button that will appear during optimization. The "err" value
is a number that shows the progress of the equalization, so you can tell whether the optimizer is "stuck" (and may
need some manual intervention) or is still making good headway. Often a better solution will be found if you stop
optimization and then restart with the "Optimize from current values" button several times.
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So, in summary, the steps for MiniDSP room equalization are: