Just a Tip Tuesday:
When using the Alti-Force Sensor Pack for skydiving, zeroing the altitude on the ground before each jump will result in the best accuracy.
From the camera:
1) Power on and WAIT for Alti-Force ‘ready’ blinks of the top LED (3 red flashes without beeps).
2) Press Mode (front button) until the camera shows the setup screen (wrench or gears).
3) Press and hold Select (top button) until top LED begins to flash red, then release Select button.
4) Return to video mode and record when ready.
Ground Offset (Excerpt from Operation Guide)
The offset value is entered in whole integer feet only. The installed default is zero.
The offset value is subtracted from the pressure-based altitude before displaying the final altitude estimate. The offset value is saved on the memory card in a file named “alt_offset.txt”, which can be deleted to reset the offset to zero feet.
An offset value can also be saved from the camera, by which a measurement is recorded of the current estimated altitude, effectively setting the altitude to zero. To do so, press Mode (front button) until the camera shows the setup screen (wrench or gears), then press and hold Select (top button) until top LED begins to blink red, then release Select.