Configuration 3
First generation 46-127-X
38kHz filter activated / Gain High
Note: NC-1-08 hydrophone black/green (ground/-12V) cables are not needed and cut off at
cable end.
M4 System - 2 Mac Minis | V2 | Installation
Second generation 46-138-X / 46-139-X
38kHz and 50kHz filters activated / Gain High
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