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PicoScope (USB Scope)

36 bytes removed, 11:44, 29 March 2016
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<p>If using a SMA-BNC cable and the ''VOUT'' connector directly, be careful about using the ''DC50'' coupling mode. Remember this will present a constant DC voltage across your scope, and also be generating a voltage divider with the shunt resistor in the target board!</p>
<p>If using the Simple Serial AES example at 7.37 MHz, start with a sample rate around 100 MS/s. The scope will automatically use the next-highest sample rate. Given a sample rate of S in MS/s, you can find sensible values for the offset &amp; length (again assuming the 7.37 MHz AES Simple Serial example):</p>
<!--
<blockquote><p><math>\text{Offset} = \frac{S}{29.49} \times 1500</math><math>\text{Length} = \frac{S}{29.49} \times 3000</math></p></blockquote>
-->
[[File:picoscope_eqn.png]]
<p>e.g. for a sample rate of 156 MS/s, Offset=7935, Length=15870. These values are based on the SimpleSerial ChipWhisperer example, where the offset is 1500 &amp; sample length is 3000.</p></li>
<li>Run the 'Capture Many' and save the project, just as in previous examples.</li></ol>
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