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5. OPERATION
Before beginning the verification process be sure that the accelerometer is correctly fixed to
the shaker’s head. To ensure this you can use some stud bolt adapters with different metrics
supplied together with the calibrator. Magnetic and adhesive fixing is allowable only for
estimate calibrations. Accuracy is guaranteed only for screw fixing.
It is very important mounting the accelerometer with symmetrical distribution from the main
axis of the calibrator, otherwise the vibrating system may be deflected from its main axis.
5.1 Verification process
If you already have the triaxial vibrometer VC431 of or the module for
measurement of vibration of the SC310 spectrum analyser then follow the next
steps:
1. Start up the calibrator: press the "ON/OFF" button until the calibrator display lights up. The
screen displays the following information: software and hardware version.
Note: In the unlikely event that the "ON/OFF" does not work, you must press the reset button. This
is on the underside, near the keyboard. Press carefully with a thin object and no-metallic. The
action of pressing the reset button does not affect the accuracy of the calibrator.
2. Then the calibrator shows the next screen where you must check the status of the battery
by means the battery indication located in the upper left part of the screen. In the upper right
part shows the percentage of the margin of error of the vibration magnitude. After a short
period of time, this percentage should reach the value 0%. If the absolute error over 3%, the
calibrator generates an acoustic beep indicating that it is no possible to perform the
calibration process.
3. Wait for a few seconds until the vibration signal stabilises, and the display show the
vibration magnitude and frequency generated by the calibrator at that moment.
If the weight of the accelerometer exceeds the maximum allowed, appears in the upper right
of the screen the message “OVERL”.
