Typical applications of the Min/Max detector I/O are glitch capturing and capturing intermittent signal changes.
In the figure below, the spikes (maxima) in a sinusoidal signal (green) are detected by a Min/Max detector (yellow).
Properties and actions
To control the behavior of the Min/Max detector I/O, several properties are available. These can be accessed through a popup menu which is shown when the I/O is right clicked.
When the Minimum property is set, the Min/Max detector I/O detects and keeps minimum values.
When the Maximum property is set, the Min/Max detector I/O detects and keeps maximum values.
Optionally a Fall-off percentage can be set. If this percentage is not zero, the output will slowly fall back to the input signal. The higher the fall-off percentage, the faster the memory values of the detector will fall in the direction of the source values. The effect can be compared to a VU-meter with peak detect.
The Count property determines how many measurements are processed. Several standard values are available, as well as a user defined setting.
Stop after count
When the Stop after count option is checked, the Min/Max detector I/O will stop processing data when Count measurements have been collected.
When the Only expand property is set, the data size of the Min/Max detector I/O gets higher when the source's data size grows, but does not shrink when the source's data does. This can be useful when detecting minima or maxima of a source with varying data size.
The Min/Max detector I/O can be manually cleared with the Clear action. The data will be made equal to the data in its source.