7
Black calibration tile (zero)
White calibration tile (high ref.)
Assigned calibration values
Calibration
Initial calibration notes
Before taking a reading it is necessary to check the calibration of the
instrument. Follow the calibration check procedure (see page 8).
Calibration mode – automatic or manual
The Novo-Shade Duo™ has two user-selectable calibration methods. It
can be switched between automatic and manual modes by connecting to
a PC and altering the setting in the preference file in Novo-Soft™.
*Note: The instrument is supplied in default automatic calibration mode
.
*Note: The black zero tile is supplied certified in a clean and defect free
condition. A visual inspection for smears or damage is recommended before
each subsequent calibration as dirty or defective tiles may lead to inaccurate
measurement. The white reflectance tile should also be checked for any deep
scratches, marks or fingerprints. (See page 12 for tile cleaning procedure.)
FIGURE 3. The Novo-Shade Duo™ calibration standard