Extech 407790A Bruksanvisning

Extech lydnivåmåler 407790A

Les nedenfor 📖 manual på norsk for Extech 407790A (55 sider) i kategorien lydnivåmåler. Denne guiden var nyttig for 4 personer og ble vurdert med 4.5 stjerner i gjennomsnitt av 2 brukere

Last ned PDF

Side 1/55

User Manual

Real Time Octave Band Analyzer

Model 407790A

Additional User Manual Translations 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

3 407790A-EN_V2.4 1/20

1. Introduction

Congratulations on your purchase of the Extech 407790A Real Time Octave Band

Analyzer. This auto ranging Type 2 integrating sound level meter features 1/1 and 1/3

Octave Band real-time noise analyses. The 407790A offers five measurement

parameters: SPL (Sound Pressure Level), Leq (Equivalent Continuous 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 software and USB cable. This meter permits

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

Produkspesifikasjoner

Merke:	Extech
Kategori:	lydnivåmåler
Modell:	407790A
Vekt:	950 g
Bredde:	60 mm
Dybde:	100 mm
Høyde:	345 mm
Bruksanvisning:	Ja
Oppløsning:	- dB
Tilkoblingsteknologi:	Ledning & Trådløs
Nøyaktighet:	- dB
Produktfarge:	Green, White
Antall støttede batterier:	4
Skjermtype:	LCD
Skjermdiagonal:	0.52 "
Kontrolltype:	Knapper
Batterispenning:	1.5 V
Skjerm med bakgrunnsbelysning:	Ja
Frekvensrekkevidde:	25 - 10 Hz
Frekvens måling:	A-weighting, C-weighting, Z-weighting
Tids-vekting:	Fast, Slow
Måle område:	40 - 130 dB