Svantek SVAN 106, Руководство пользователя

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SVAN 106 User MANUAL
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The calibration by measurements can be done in the following way:
1. Select the calibration by measurement (highlight the Calibr.
By Measurement text) from the Calibration sub-list and press the
<ENTER> push-button.
2. Select filter: for hand-arm transducer –
BL Wh, for whole-body transducer –
BL Wk or equivalent.
<
4 4 4 4
>
3. Select the calibrator signal level.
4. Attach the vibration calibrator to the instrument’s accelerometer.
5. Switch on the calibrator and wait approximately 30 seconds before
starting the calibration measurement.
6. Start the calibration measurement by pressing the <Start/Stop> push-
button.
The measurement starts after 5 seconds
delay. The measurement time is also
predefined
to 5 seconds. During the
calibration period, the <ESC> and <Pause>
push-buttons do not operate but it is possible
to
stop the measurement using the
<Start/Stop> push-button. Waiting for the
calibration measurement to begin, a Start
Delay is counted down. At the end of the
measurement, the result is displayed on the
display in the bottom line.
The calibration procedure should be repeated a few times to ensure the integrity of the calibration. The
obtained results should be almost identical (with
±
0.1 dB difference). The reasons for unstable results are as
follows:
•
the calibrator is not properly attached to the instrument,
•
there are external disturbances,
•
the calibrator or the measurement channel (the accelerometer or the instrument itself) are damaged.
Notice: During the calibration period, external disturbances (vibrations or acoustic noise)
should not exceed 100 dB.