for this may destroy the electronic system of instrument
Tip: for better results, please use the batteries with good
quality and replace them as soon as they become low.
3. Basic operation
3.1 Power on the instrument
Press the
button, and the instrument will beep once and
display the startup picture. Afterwards, the instrument will perform
an internal self-calibration check programme for 30 seconds.
Tip: If the clock is not set, the instrument will enter the time
and date set-up mode firstly (see section 4) and then perform
its self-calibration when the clock is set.
3.2 Internal self-calibration
When the instrument is turned on (see section 3.1), it performs
an internal self-calibration check, with the display counting down
from 30 to 0 seconds:
Summary of Contents for LBY-420
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Page 7: ...Instrument indication ...
