2
3.3 Viewing the register ......................................................................................................25
3.4 Erasing the memory......................................................................................................25
4. DATA TRANSFER.............................................................................................................26
4.1 Transfer of data to a PC: Communication software ......................................................26
5. PRECAUTIONS AND WARNINGS ...................................................................................27
6. TECHNICAL SPECIFICATIONS .......................................................................................28
6.1 Measurement range......................................................................................................28
6.2 Peak detector - L
peak
function ........................................................................................28
6.3 Frequency weighting.....................................................................................................28
6.4 Sound pressure level range according to frequency.....................................................29
6.5 Octave band filters .......................................................................................................30
6.6 Microphone ...................................................................................................................30
6.7 Reference conditions ....................................................................................................31
6.8 Electrical signal insertion ..............................................................................................31
6.9 Single pole pulse response...........................................................................................31
6.10 Warm-up time .............................................................................................................31
6.11 Influence of temperature .............................................................................................31
6.12 Influence of humidity ...................................................................................................32
6.13 Influence of atmospheric pressure..............................................................................32
6.14 Electromagnetic compatibility......................................................................................32
6.15 Batteries and external supply......................................................................................33
6.16 Dimensions and weight...............................................................................................33
6.17 Calibration...................................................................................................................33
6.18 Standards....................................................................................................................33
6.19 Notes...........................................................................................................................34
6.20 Accessories.................................................................................................................34
7. Appendix A: Functions ....................................................................................................35
7.1 Definition of functions...................................................................................................35
7.1.1 Continuous equivalent sound pressure level ..........................................................35
7.1.2 Peak sound pressure level .....................................................................................35
7.1.3 Equivalent daily exposure level ..............................................................................35
7.1.4 Dose .......................................................................................................................36
8. Appendix B: Conditions of verification..........................................................................37
8.1 Verification procedures .................................................................................................37
8.1.1 Verification in units of sound exposure (Pa²h) ........................................................37
8.1.2 Verification in units of equivalent sound (Leq) ........................................................39
8.2 Alternative free-field method .........................................................................................43
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