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The ETS method requires more than one trigger event in order to fully restore a captured waveform [1].
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This chapter will describe the ETS mode in detail and discusses the limitations as well as the different implementation methods.
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ETS enables a digital oscilloscope to capture signals with a much higher effective sample rate than the actual sample rate of the built-in ADCs.
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Subsequently, the oscilloscope will then be able to measure and display signals with a higher frequency.
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... | ... | @@ -31,7 +30,7 @@ Signals measured by the real-time sampling method does not have this restriction |
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Another restriction is that during ETS, it is not possible to take single shots of non-repetitive events like glitches or spikes.
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Figure 1 shows a non-repetitive signal captured with an oscilloscope running in ETS mode.
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A similar effect can be observed using the OpenLab FPGA-based oscilloscope.
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A similar effect can be observed using the OpenLab oscilloscope.
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For example, if the oscilloscope captures in ETS mode and the user disables the triggering, the display will get distorted. The result can be seen in figure 2.
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... | ... | @@ -70,7 +69,7 @@ This reference point is, depended on the implementation of the ETS mode, given b |
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A detailed description of how the ETS mode works is given by the upcoming sub-chapters. ETS can be implemented in several ways each with their own advantages and disadvantages.
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This wiki will describe the two most common ETS methods:
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This wiki will introduce the two most common ETS methods:
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