MDP-621/641/640 Chapter 10
Operation manual MENU operation
(5) Depth
Selects the bottom detection function to operate at high frequency, low frequency or auto.
Setting range: Auto, high frequency, low frequency.
0
Auto
1
High
2
Low
Depth
(6) Sonic correction
Due to the differences in the temperature and salinity of seawater, the measured depth may be
slightly deeper or shallower than the real depth.
In this case, the depth can be corrected against a known depth using the following function.
Setting range:-7〜+2％
％
+0
Sonic Correction
0093161022-06 10-67
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