Ninglu AM706D, Руководство по эксплуатации

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Wind sensor sends relative wind direction and speed signal (relative
to ship bow and absolute value of angle signal) in digital interface
format of RS422 to main unit through junction box.
Temperature and humidity sensor provides air temperature and
humidity signal in digital interface format of RS485 to main unit
through junction box
Barometric pressure signal is received from internal IC sensor of
main unit.
Main unit uses these signals to calculate, display and export.
True speed and direction:
There are two ways to get the true direction and speed.
First way, connecting external GPS (RMC) data input, main unit can
calculate true wind direction (relative to North Pole) and speed.
Second way, connecting both Gyro(HDT) and Speed Log(VBW) data,
main unit can display the true wind direction and speed.