User Manual

Programming with the PicoScope 4000 Series16

4.6.5

Retrieving stored data

You can collect data from the PicoScope 4000 driver with a different aggregation

factor when ps4000RunBlock or ps4000RunStreaming has already been called and

has successfully captured all the data. Use ps4000GetValuesAsync.

4.7

Oversampling

When the oscilloscope is operating at sampling rates less than its maximum, it is

possible to oversample. Oversampling is taking more than one measurement during

a time interval and returning the average as one sample. The number of

measurements per sample is called the oversampling factor. If the signal contains a

small amount of Gaussian noise, this technique can increase the effective vertical

resolution of the oscilloscope by

bits, where

is given approximately by the

equation below:

log

(oversampling factor) /

log

Conversely, for an improvement in resolution of

bits, the oversampling factor you

need is given approximately by:

oversampling factor = 4

Applicability

Available in block mode only.

Cannot be used at the same time as aggregation.