Various methods of data reduction, or downsampling, are possible with the
PicoScope 6000 Series oscilloscopes. The downsampling is done at high speed by
dedicated hardware inside the scope, making your application faster and more
responsive than if you had to do all the data processing in software.
You specify the downsampling mode when you call one of the data collection functions
such as ps6000GetValues. The following modes are available:
Reduces every block of n values to just two values: a minimum and a maximum. The minimum and maximum values are returned in two separate buffers.
Reduces every block of n values to a single value representing the average (arithmetic mean) of all the values.
Reduces every block of n values to just the first value in the block, discarding all the other values.
Reduces every block of n values to a histogram. Since the values are 8-bit numbers, there are 28 = 256 bins in each histogram. A histogram is treated as one "sample" by the data collection function, so the noOfSamples argument specifies the number of 256-bin histograms that will be written to the data buffer.
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