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FWMarksNotes

-                      v2
+                      v3
  * The digitiser starts recording from the first returned peak for the number of required samples (256/128 @ 1ns or 256/128/64 @ 2ns)
   * If first return is noise (cloud/seagull) then the digitiser will start recording there and not at the target.
+  * measured heights / distances for different sampling rates:
+    || Sample rate || equivalent height ||
+    || 256 @ 1ns   || 38.4m ||
+    || 128 @ 1ns   || 19.2m ||
+    || 256 @ 2ns   || 76.8m ||
+    || 128 @ 2ns   || 38.4m ||
+    || 64 @ 2ns    || 19.2m ||
  * Benefits of full waveform
   * Better idea of the nature of the return e.g. tree canopy height is more accurate than from 1 discrete point
 …
  * ALSPP outputs in LAS 1.3 format
  * Includes a simple waveform viewer
+  * Displays waveform and discrete points
+  * There is a "constant" timing offset between the waveform and discrete points - thought to be due to processing time