Svantek SVAN 979, User Manual

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SVAN 979 User Manual
Note: The type of measurement function and the measurement mode is displayed in the upper line
of the screen in the form of abbreviation as presented below:
- SLM Sound Level Meter,
- S:1/1 Sound 1/1 Octave,
- S:1/3 Sound 1/3 Octave,
- S:1/6 Sound 1/6 Octave,
- S:1/12 Sound 1/12 Octave,
- S:FFT Sound FFT,
- S:RT60 Sound RT60,
- S:LOUD Sound Loudness,
- S:STI Sound STIPA
- DSLM Direct Sound Level Meter,
- DS:1/1 Direct Sound 1/1 Octave,
- DS:1/3 Direct Sound 1/3 Octave,
- DS:1/6 Direct Sound 1/6 Octave,
- DS:1/12 Direct Sound 1/12 Octave,
- DS:FFT Direct Sound FFT,
- DS:RT60 Direct Sound RT60,
- DS:LOUD Direct Sound Loudness,
- DS:STI Direct Sound STIPA
- VLM Vibration Level Meter,
- V:1/1 Vibration 1/1 Octave,
- V:1/3 Vibration 1/3 Octave,
- V:1/6 Vibration 1/6 Octave,
- V:1/12 Vibration 1/12 Octave,
- V:FFT Vibration FFT,
- DVLM Direct Vibration Level Meter,
- DV:1/1 Direct Vibration 1/1 Octave,
- DV:1/3 Direct Vibration 1/3 Octave,
- DV:1/6 Direct Vibration 1/6 Octave,
- DV:1/12 Direct Vibration 1/12 Octave,
- DV:FFT Direct Vibration FFT.
Note: Some functions are optional and should be unlocked by entering the activation code in the
text editor screen, which is opened after first attempt to select it. Once unlocked, this option will be
ready to use permanently.
Optional functions that broaden the application of the instrument can be initially supplied and activated by the
manufacturer or purchased later and activated by the user.
3.3 I
NSTRUMENT
’
S CALIBRATION
–
C
ALIBRATION
The instrument is factory calibrated with the supplied microphone and
accelerometer for the reference environmental conditions. Because the
'accuracy' of the electronic components can drift so equipment should be
calibrated periodically by a competent laboratory. Because the sensitivity of
the microphone and accelerometer is a function of the temperature, ambient
pressure and humidity and when the absolute sound pressure level value is
important, the absolute calibration of the measurement channel should be
performed before the measurement. It is also good practice to check the
instrument measurement channel before and after measurements.
Due to implemented automatic calibration the instrument can perform the
sound calibration automatically, when the calibrator is placed over the
microphone (switched on or with the auto run function). The calibrator level
is automatically detected, and the calibration measurement is started
automatically. Just press
<ENTER> to confirm the calibration results. A
sound measurement cannot be in progress while the automatic calibration is
being performed.
The Calibration list comprises positions
enabling in-situ system checking and
calibration
( System Check , Calibr. by
Sensitivity , Calibr. by Measurement ),
checking and erasing calibration records
(
Last Calibration , Clear Calibr. History )
and switching on the automatic calibration
(
Auto Calibration ).
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