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The menu contents are basically the same in the trwo cases and should be easy understandable. A few comments are described below.
Specify two-way travel time
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or one-way travel time.
Two-way travel time is default and mostly used in recorded data because it is the time the sound signal takes to go down to the reflector and back again. One-way travel time is optional if data has this feature.
Specify to which depth value depth conversion is to be performed.
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