Johnson Level & Tool Mfg. 1880-4800 - Manual (Page 10)

10 ©2013 Johnson Level & Tool - Rev. 1
4. “CAL” will flash on the LCD indicating the digital level is in the
calibration process.
5. If the digital level is not kept stable or if the digital level is
tipped to far forward or backward, “ERRO” will appear on the
LCD. Push the Calibration Button one time to exit calibration
mode and repeat the procedure.
6. If the calibration procedure is successful, the LCD will display
“rdy”. The calibration procedure is completed and the digital
level will exit the calibration procedure automatically.
Calibration
1. Select a flat horizontal platform as a reference surface, like a
table surface.
2. With the digital level turned on, push the MODE button and
CAL button at the same time for 3 seconds the release.
3. The LCD will show “CAL1” indicating the digital level has
entered the calibration process.
4. Push the CAL button one time and the LCD will show a
flashing “CAL1”.
5. The LCD will then show a solid “CAL2”.
6. Rotate the level 180° putting it in the same position as it
was before.
7. Push the CAL button one time. The LCD will display a
flashing “CAL2”.
8. When the digital level is calibrated it will exit calibration
mode automatically.
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