hi
the soft to convert .DAT to XTF is Son2XTF. it's not esasier to find it, but it work nice with new génération of hélix méga too.
with it you can read scan on deepviewer 3
i join picture done in Deep with .dat converted in XTF and wiew of this soft, it's ancien but nice and i don't know why Humm and other keep out this
i suppose for Autochart or other