How to use:
1. Select the kH value listed on the front of your meter.
2. Hold the start button for one meter cycle.
A meter cycle is simply the time it takes for a point of reference to cycle back to itself.
On an analog meter, this could be from the point on the disc marked "0" to spin around once and return back to "0".
On a SmartMeter, this spinning disc is replicated by a dot (or pair of dots) cycling along a short path. Once again, just pick a starting position and wait for the dot to cycle back to the starting position.
In short, select a kH value and hold the start button for one meter cycle.
Very useful when used properly