7.4.5 Store data....................................................................................................................................... 34
7.5 Calculate two sound sources................................................................................................................. 35
7.5.1 Settings to perform before measurement........................................................................................35
7.5.2 Make calculation of two sound sources..........................................................................................35
7.6 Determine a sound source among two...................................................................................................35
7.6.1 Perform the measurement..............................................................................................................35
7.6.2 Store data....................................................................................................................................... 36
8 Modes of measurement launching.................................................................................................................37
8.1 Generalities............................................................................................................................................ 37
8.2 Immediate mode.................................................................................................................................... 37
8.3 Delayed – Tim. mode............................................................................................................................. 37
8.4 Repetitive delayed mode – Tim..............................................................................................................38
8.4.1 Delayed mode: Tim. – waiting for measurement.............................................................................39
8.4.2 Delayed mode: Tim. – interrupt the programming...........................................................................39
8.4.3 Delayed mode: Tim. – Data storage and audio files........................................................................40
8.4.4 I /O mode........................................................................................................................................ 40
9 Read the stored files...................................................................................................................................... 41
9.1 Access to files........................................................................................................................................ 41
9.2 Read data of the file............................................................................................................................... 41
9.2.1 L-Leq mode file............................................................................................................................... 41
9.2.2 Leq-St mode file............................................................................................................................. 42
9.2.3 1/1 oct file mode............................................................................................................................. 43
9.2.4 NR noise equipment file..................................................................................................................45
9.2.5 S1+S2 mode file............................................................................................................................. 45
10 Transfer files to a PC................................................................................................................................... 46
10.1 Transfer................................................................................................................................................ 46
10.2 Files format and structure on the micro SD card..................................................................................46
11 Reset memory.............................................................................................................................................. 47
12 Audio recording function..............................................................................................................................48
12.1 Temporal synoptic................................................................................................................................ 49
12.2 Synoptic of the management of the recording dynamic........................................................................49
12.3 Use of audio recording.........................................................................................................................50
12.4 Measurement in progress – Data reading............................................................................................51
13 Direction for use and maintenance of the sound level meter.......................................................................52
13.1 Use warnings....................................................................................................................................... 52
13.2 Direction for use...................................................................................................................................52
13.3 Calibration............................................................................................................................................ 52
13.4 Maintenance......................................................................................................................................... 53
13.5 Regular checking................................................................................................................................. 53
13.6 Replace the battery by a batteries pack...............................................................................................53
13.7 Replace the batteries (if equipped).......................................................................................................54
13.8 Load the battery................................................................................................................................... 54
13.9 AC adapter........................................................................................................................................... 54
14 Running information..................................................................................................................................... 55
14.1 Over-range........................................................................................................................................... 55
14.2 Power supply........................................................................................................................................ 55
14.3 Inputs / outputs / I/O programming....................................................................................................... 55
14.3.1 I/O 1 In......................................................................................................................................... 55
14.3.2 I/O 1 Out...................................................................................................................................... 56
14.3.3 I/O 2 Out....................................................................................................................................... 57
15 Technical features........................................................................................................................................ 58
15.1 Microphone and windscreen of the class 1 DB300 sound level meter..................................................58
15.1.1 Sheet............................................................................................................................................ 58
15.1.2 Normal frequency response in free-field.......................................................................................58
15.1.3 Windscreen................................................................................................................................... 58
15.2 Microphone and windscreen of the class 2 DB300 sound level meter..................................................59
15.2.1 Sheet............................................................................................................................................ 59
15.2.2 Normal frequency response in free-field.......................................................................................59
15.2.3 Windscreen................................................................................................................................... 59
15.3 Preamplifier PR23................................................................................................................................ 60
15.4 Class 1 A – C – Z weightings and free field response...........................................................................60
15.5 Class 2 A – C – Z weightings and free field response...........................................................................60
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