ii
8.4.3 Noise Dose Calculation ........................................................................................................ 18
8.5 Spectrum Analyzer Software ............................................................................................................ 19
8.6 Audio Recorder Software................................................................................................................... 20
9 Technical Specifications ....................................................................................................... 21
10 Measuring to IEC 61672-3 ..................................................................................................... 23
10.1 Reference Sound Pressure Level ...................................................................................................... 23
10.2 Reference Level Range ....................................................................................................................... 23
10.3 Corrections for Acoustic Tests .......................................................................................................... 23
10.3.1 Free-Field and Pressure Response .................................................................................... 23
10.3.2 Directivity Response ............................................................................................................. 24
10.3.3 Effect of Windscreen ............................................................................................................. 25
10.4 Upper and Lower Boundaries of Linear Operating Ranges ...................................................... 25
10.4.1 Upper Boundary of Linear Operating Range for the “Low” range setting ............. 25
10.4.2 Upper Boundary of Linear Operating Range for the “High” range setting ............ 26
10.4.3 Lower Boundary of Linear Operating Range for the “Low” range setting ............. 26
10.4.4 Lower Boundary of Linear Operating Range for the “High” range setting ............ 26
10.4.5 Starting Point for Testing Boundaries of Linear Operating Ranges ......................... 26
10.5 Performing Electrical Tests ................................................................................................................ 27
10.5.1 Inserting Electrical Signals ................................................................................................... 27
10.5.2 Specifications Adjustment .................................................................................................. 27
10.5.3 Calibration ............................................................................................................................... 27
10.5.4 Adjusting Sensitivity for the Auxiliary Input ................................................................... 27
10.6 Self-Generated Noise .......................................................................................................................... 28
10.6.1 Total Self-Generated Noise (Acoustical and Electrical) ................................................ 28
10.6.2 Electrical Self-Generated Noise .......................................................................................... 28
11 Glossary ................................................................................................................................. 29
12 Specimen Calibration Certificate ......................................................................................... 31
13 FAQ ......................................................................................................................................... 35
14 Warranty ................................................................................................................................ 36
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