calibrate

calibrate the inputs/offsets :

• to calibrate the ADC inputs, simply push the encoder while powering up. make sure nothing is connected to the inputs; the module will enter into calibration mode, and you should see a menu page saying something along the following lines:

ok? - push top button
----------------------- 
 L - srt           512
 L - eof           514
 R - srt           509
 R - eof           513

• the displayed values should be approx. 512. unless they're seriously off (in which case something is wrong), press the top button to save them to eeprom.