ETS_theory.asciidoc

@@ -32,12 +32,13 @@ Figure 1 shows a non-repetitive signal captured with an oscilloscope running in
 A similar effect can be observed using the OpenLab FPGA-based oscilloscope.
 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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-image::https://es.technikum-wien.at/openlab/openlab_wiki/wikis/img/ETS_theory/ETS_glitch.png[caption="Figure 1: ",title="Non-repititive signal captured using ETS (3)",height=300]
+image::https://es.technikum-wien.at/openlab/openlab_wiki/wikis/img/ETS_theory/ETS_glitch.png[caption="Figure 1: ",title="Non-repititive signal captured using ETS (1)",height=300]
 
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@@ -46,7 +47,13 @@ image::https://es.technikum-wien.at/openlab/openlab_wiki/wikis/img/ETS_theory/ET
 image::https://es.technikum-wien.at/openlab/openlab_wiki/wikis/img/ETS_theory/ETS_glitch_OpenLab.png[caption="Figure 2: ",title="Non-repetitive signal captured with the OpenLab oscilloscope using the ETS mode",height=300]
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-Text below images.
+The reason for this is similar to the effect described by the Tektronix article [1].
+ETS depends very much on repetitive trigger events. The acquisition will not work probably if the limitations of ETS are ignored.
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+ETS acquires signals by taking samples across multiple trigger events. This “scans” the signal step by step and enables an accurate representation of the captured waveform.
+This process is illustrated in figure 3.
 
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