Translations:KAVAN V20 + ETHOS™ - User manual/93/en

To calibrate, determine how many seconds your clock gains or loses in 24 hours. Set the calibration value to twelve times this number of seconds, so it will be negative if your clock is running faster, and positive if it is running slower. You can then check to see if your clock is accurate and adjust the calibration value slightly for maximum accuracy. The actual calibration value can be set to -500 to +500.