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.