User Manual

fig-19 fig-20 fig-21
7) Unit：Unit setting is used to set the depth unit with the metric system (M) or British
system (Ft), and the temperature unit is Celsius or Fahrenheit. As shown in Figure 20.
8) Chart speed: The chart speed setting is used to set the refresh rate from right to left, and
can be set as 1to 5 in accordance with the level. As shown in Figure 21.
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