Absolute barometer

Very straight forward to use instrument:

• Powered by 10x AA batteries, already in. Check total voltage of battery brick >14V, otherwise replace.
• Plug in GPS antenna.
• Power ON, wait for GPS (top right ¥ symbols are indicative of GPS lock).
• Start recording.
• After pressing the stop button, wait for a few seconds for data access to SD card to stop before turning off.