18.1 MODES AND MEASUREMENT FUNCTIONS
The menu section enabling selection of the
measurement Mode, Measurement Function and
perform Calibration of the instrument.
Mode of the instrument operation defined by the
connected transducer:
- noise parameters measurement (Sound Meter) or
- vibration parameters measurement (Vibration Meter).
Measurement of sound parameters with connected
microphone. When Sound Meter is selected all
abbreviations of the Measurement Function start from S
letter.
Measurement of vibration parameters with connected
accelerometer. When Vibration Meter is selected all
abbreviations of the Measurement Function start from V
letter.
Type of calculations the instrument currently performs
(its abbreviation in the icon line of the display):
- Level Meter (SLM or VLM),
- 1/1 Octave (S:1/1 or V:1/1),
- 1/3 Octave (S:1/3 or V:1/3),
- FFT (S:FFT or V:FFT),
- RT60 (RT60),
- Tonality (TON),
- STIPA (STI).
Measurement Function enabling calculation of broad
band results (Summary Results) and time-history for
sound measurements in accordance with Class 1
IEC 61672-1:2013 accuracy or vibration measurements
in accordance with ISO 20816-1:2016. All results can be
calculated in parallel by three virtual meters (so called
profiles) using different weighting filters and LEQ/RMS
detectors. When the Level Meter function is active the
SLM or VLM abbreviation appears in the icon line.
Measurement Function enabling calculation of
Level Meter results and 1/1 octave results for sound or
vibration measurements in accordance with Class 1 IEC
61260-1: 2014. 1/1 octave results are presented as a
spectrum plot - a function of result vs central band
frequency and can be saved as a time-history. When the
1/1 Octave function is active the S:1/1 or V:1/1
abbreviation appears in the icon line.
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