Extech 407790A Handleiding

Extech Geluidsniveaumeter 407790A

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User Manual

Real Time Octave Band Analyzer

Model 407790A

Addional User Manual Translaons available at www.extech.com

2 407790A-EN_V2.4 1/20

Table of Contents

TABLE OF CONTENTS .......................................................................................... 2

1. INTRODUCTION ................................................................................................ 3

1.1 Instrument Care ............................................................................................ 4

1.2 Features ........................................................................................................ 5

2. DESCRIPTIONS ................................................................................................ 6

2.1 Meter Description .......................................................................................... 6

2.2 Operation Buttons ......................................................................................... 8

2.3 Display Screen ............................................................................................ 10

2.4 Analysis screen ........................................................................................... 12

2.5 Numeric Display screen .............................................................................. 13

3. MEASUREMENT PREPARATION AND SETUP ............................................ 15

3.1 Setting the Date and Time .......................................................................... 15

3.2 SD Memory Card ........................................................................................ 17

3.3 Setting the Backlight Auto Off time ............................................................. 17

3.4 Sub Channel Settings ................................................................................. 18

3.5 Selecting the Lmax/Lmin type .................................................................... 19

3.6 Comparator Output Operation .................................................................... 20

3.7 Trigger Mode Setup and Operation ............................................................ 23

4. MEASUREMENTS ........................................................................................... 27

4.1 Sound Level Measurements ....................................................................... 27

4.2 SEL, Leq, Lmax, Lmin, LN Measurements ................................................. 28

4.3 Sound Level and Octave Band Analysis Measurement ............................. 30

4.4 Sound Band - Leq, SEL, Lmax, Lmin and LN Analysis Measurement ....... 32

5. STORING DATA TO MEMORY ....................................................................... 34

5.1 Manual Memory Storage ............................................................................ 34

5.2 Recalling Manually Stored Data ................................................................. 37

5.3 Erasing Manually Stored Data .................................................................... 39

5.4 Auto 1 Memory Storage .............................................................................. 40

5.5 Auto 2 Memory Storage .............................................................................. 44

5.6 Erasing Auto Stored Data ........................................................................... 45

6. SOFTWARE DOWNLOAD AND INSTALLATION .......................................... 47

7. SOUND PRESSURE LEVEL - TECHNICAL NOTES ..................................... 48

8. CALIBRATION ................................................................................................. 49

9. SPECIFICATIONS ........................................................................................... 50

10. TWO-YEAR WARRANTY ................................................................................ 53

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1. Introducon

Congratulaons on your purchase of the Extech 407790A Real Time Octave Band

Analyzer. This auto ranging Type 2 integrang sound level meter features and 1/1 1/3

Octave Band real-me noise analyses. The 407790A oers ve measurement

parameters: SPL (Sound Pressure Level), Leq (Equivalent Connuous Sound Pressure

Level), SEL (Sound Exposure Level), Lmax (Maximum Sound Pressure Level), and Lmin

(Minimum Sound Pressure Level). The built-in memory stores 12,280 data records in

sound level mode and 1024 records in Octave mode The stored data can be easily .

transferred to a PC with the 407790A soware and B cable This meter permits US .

choice of Flat ‘A’, ‘C’, or ’Z’ weighting and Slow / Fast /impulse response mes AC and .

DC analog output signals are available for chart recorders and other external recording

devices. Careful use of this device will provide years of reliable service.

Product specificaties

Merk:	Extech
Categorie:	Geluidsniveaumeter
Model:	407790A
Soort bediening:	Knoppen
Kleur van het product:	Green,White
Gewicht:	950 g
Breedte:	60 mm
Diepte:	100 mm
Hoogte:	345 mm
Gebruikershandleiding:	Ja
Beeldschermdiagonaal:	0.52 "
Resolutie:	- dB
Connectiviteitstechnologie:	Bedraad en draadloos
Accu/Batterij voltage:	1.5 V
Nauwkeurigheid:	- dB
Ondersteund aantal accu's/batterijen:	4
Frequentiebereik:	25 - 10 Hz
Type beeldscherm:	LCD
Display met achtergrondverlichting:	Ja
Frequentieweging:	A-weighting,C-weighting,Z-weighting
Tijdweging:	Fast,Slow
Meetbereik:	40 - 130 dB