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2 - 32 - 3
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MANUAL No. 99MBH001B
2 OPERATION
2.2.2 Gain adjustment2.2.2 Gain adjustment
2.2.2 Gain adjustment2.2.2 Gain adjustment
2.2.2 Gain adjustment
Perform gain adjustment after zero adjustment.
(1)Place the provided calibration film on the reference specimen.
For accurate measurement, use a calibration film of thickness as
close to that of the coating to be measured as possible.
(2)Applying the probe on the calibration film, turn the Gain adj. vol-
ume until the Digi-Derm indicates exactly the thickness as desig-
nated on the film. Refer to 2.2.1 (2) for the way the probe is ap-
plied.
The probe should be applied to the same point as used for "Zero
Adjustment".
SPAN
(EX.: metric
Reference specimen
Calibration film (Ex.: 100µm)
Fig. 4
(3)Remove the calibration film, then check the zero point (refer to
2.2.1 (3)). Place the film on the specimen again, apply the probe
to the film surface at the same point as applied at (2) several
times, then check that the correct film thickness is displayed each
time.
