Carrying out the calibration 5 Operation
DMS Go+ Edition 4 (05/2014) 5-27
– Press one of the left or right arrow keys in order to
start the zeroing. The message Wipe off couplant
from probe, press ZERO is displayed on the screen.
– Press the function key 2 (function ZERO). The zero-
ing is performed.
Calibration to zero and to sound velocity
To calibrate the DMS Go+ to the sound velocity in the
test object, you can choose between two methods, i.e.
the 1-point calibration and the 2-point calibration.
As an alternative, if the sound velocity is known, you can
set it directly on the instrument (
see Section Setting the
sound velocity, page 5-31).
The 1-point calibration is available for all measurement
modes, the 2-point calibration only for the measurement
modes S-IP, S-PEAK, S-FLANK, and DUAL.
Zeroing is always carried out first during the 1-point cal-
ibration.
The reference block at the instrument rear is
only used for carrying out the zeroing pro
-
cess.
Only use the calibration blocks recommend-
ed by GE for further calibrations (please refer
to chapter 2).
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