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PicoScope and oscilloscope primer
10
Copyright 2006 Pico Technology Limited. All rights reserved. PSW044-2.0
5.5
Custom probes
A probe is any connector, transducer or measuring device that you connect to the
input channel of your scope device . PicoScope has a built-in library of common
probe types, such as the x1 and x10 voltage probes used with most oscilloscopes, but
if your probe is not included in this list you can use the Custom Probes dialog to
define a new one. Custom probes can have any voltage range within the capabilities of
the oscilloscope, display in any units, and have either linear or nonlinear
characteristics.
Custom probe definitions are particularly useful when you wish to display the probe's
output in units other than volts, or to apply linear or nonlinear corrections to the data.
5.6
Frequency legend
The frequency legend appears when you have placed two time rulers on a scope
view . It shows 1/D in hertz, where D is the time difference between the two rulers.
You can use this to estimate the frequency of a periodic waveform, but you will get
more accurate results by creating a frequency measurement using the Add
Measurements button on the Measurements toolbar .
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