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NavSim software is designed to be linked with an Anemometer receiver in order to display the Apparent Wind and/or True Wind. Once connected and configured, the Anemometer can greatly enhance the level of data provided our software.
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This program supports Anemometer receivers capable of outputting NMEA-0183 compliant string. Please check the user manual for the Anemometer receiver if unsure of its capabilities.
The communication link from the Anemometer receiver to the computer is established in one of two ways, depending on the Anemometer receiver used:
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Serial communication over an RS-232 cable with a DB-9 connector. Typically a communications cable will come with the Anemometer receiver that has a DB-9 Female connector (as shown) on one end to connect to the PC's serial port (also called a COM port), and another connector on the other end of the cable to connect to the Anemometer receiver. If the Anemometer receiver has a connector for hooking into such a cable, but the cable is missing, a replacement may be available from the manufacturer of the receiver or a local marine outfitting store. Note: A serial to USB converter can also serve as an option if the laptop does not have a serial port. |
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Once the hardware is connected to the computer, the software can be configured to display the information using the Device Finder Wizard or through the GPS dialog in "Tools->Devices->Anemometer". If an Anemometer device is configured through the Device Tools dialog, be sure to set the correct Baud Rate for the receiver. This baud rate can usually be found in the receiver documentation and can even be configured on some units. If a connection is not immediately established , different COM ports and baud rates may have to be tested in order to find the correct combination.
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The Anemometer can measure both Apparant Wind speed and direction, and True Wind speed and direction. Apparent Wind is the wind that a sailor feels as they move with the wind. True Wind is the wind relative to True North, and is essentially felt when the sailor is stationary.
The option to turn on/off Anemometer data filtering can prove quite useful. The data filtering reduces jumping of wind data by calculating the average wind direction to achieve a more stable reading.