TABLE OF CONTENTS
1. FEATURES................................................................................ 1
2. SPECIFICATIONS..................................................................... 2
3. FRONT PANEL DESCRIPTION................................................
6
4. MEASURING PROCEDURE.....................................................
7
4-1 Sound Pressure Measurements (SPL)....................................... 7
4-2 Integrating Sound Level Meter Measurements (Leq).................
8
4-3 Data Hold.................................................................................... 10
4-4 Data Record ( Max., Min. reading )............................................. 11
5. DATALOGGER.......................................................................... 12
5-1 Preparation before execute datalogger function......................... 12
5-2 Auto Datalogger ( Set sampling time ≧ 1 second )..................
12
5-3 Manual Datalogger ( Set sampling time = 0 second )................ 14
5-4 Check time and sampleing time information............................... 14
5-5 SD Card Data structure..............................................................
15
6. Saving data from the SD card to the computer.......................... 16
7. ADVANCED SETTING..............................................................
18
7-1 Set clock time ( Year/Month/Date, Hour/Minute/ Second )......... 18
7-2 Set sampling time ......................................................................
19
7-3 Auto power OFF management ..................................................
19
7-4 Set beeper Sound ON/OFF........................................................
20
7-5 Decimal point of SD card setting................................................
20
7-6 SD memory card format.............................................................. 21
7-7 Frequency weighting to A or C setting..................................... 21
8. POWER SUPPLY from DC ADAPTER...................................... 22
9. BATTERY REPLACEMENT......................................................
23
10. RS232 PC serial interface........................................................ 23
11 CALIBRATION .........................................................................
25
12. FREQUENCY WEIGHTING CHARACTERISTICS
OF A & C NETWORKS............................................................
25
13. TIME WEIGHTING (FAST & SLOW)
CHARACTERISTICS...............................................................
26
14. PATENT................................................................................... 26
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