Davis PC Astro User's Manual

To calibrate the compass, ensure the device is on a flat surface and free from magnetic interference. Follow the on-screen instructions to rotate the device slowly in a full circle.
Ensure that you are outdoors with a clear view of the sky. Restart the device and allow a few minutes for it to acquire a signal. If the problem persists, check for firmware updates.
Connect the device to a computer using the provided USB cable. Visit the Davis official website to download the latest firmware and follow the installation instructions.
Use a soft, dry cloth to clean the screen and casing. Avoid using harsh chemicals or solvents, and store the device in a protective case when not in use.
Go to the settings menu, select 'System', then 'Reset'. Confirm the reset operation to restore the device to factory settings.
The device is designed to withstand moderate weather conditions, but it is advisable to protect it from heavy rain and extreme temperatures.
Ensure that power-intensive features such as Wi-Fi and Bluetooth are turned off when not in use. Consider reducing screen brightness and disabling unnecessary notifications.
Use the Davis software to import waypoints into the device. Connect the device to your computer and follow the software's instructions to complete the transfer.
Try restarting the device by holding down the power button. If the issue persists, perform a soft reset or consult the user manual for further troubleshooting steps.
Ensure the device has a clear view of the sky, avoid metal obstructions, and regularly update the GPS data files from the Davis website.