BRUEL & KJAER 4226 - Table of Contents

Contents
CHAPTER 1
Introduction............................................................................................................................. 1
1.1 What is Multifunction Acoustic Calibrator Type 4226? ............................................................ 1
1.2 How the Calibrator Works ........................................................................................................ 2
CHAPTER 2
The Parts of Multifunction Acoustic Calibrator Type 4226 ........................................................ 7
2.1 What’s Included ........................................................................................................................ 7
2.2 Controls on the Front Panel...................................................................................................... 8
2.3 Controls on the Side Panel...................................................................................................... 12
CHAPTER 3
Operation .............................................................................................................................. 13
3.1 Environmental Conditions ...................................................................................................... 13
3.2 Battery Installation ................................................................................................................. 13
3.3 Preparing for Acoustic Calibrations ........................................................................................ 14
3.4 Frequency Response Calibrations of Listed Microphones ...................................................... 16
3.5 Frequency Response Calibrations of Unlisted Microphones .................................................. 17
3.6 Checking the Differential Level Linearity of Brüel & Kjær Sound Level Meters...................... 18
3.7 Checking the “F” and “S” Time Weighting.............................................................................. 19
3.8 Checking the Crest Factor Handling........................................................................................ 21
3.9 Calibrating a Noise Dose Meter .............................................................................................. 23
3.10 Using the AC Output ............................................................................................................... 24
3.11 Using an External Generator................................................................................................... 25
CHAPTER 4
Maintenance and Service....................................................................................................... 27
4.1 Storage and Handling.............................................................................................................. 27
4.2 Service..................................................................................................................................... 27
CHAPTER 5
Specifications......................................................................................................................... 29
APPENDIX A
Corrections and Adjustments................................................................................................. 33
A.1 The Sound Level in the Coupler – Using the Internal Signal Generator.................................. 33
A.2 The Sound Level in the Coupler – Using an External Signal Generator .................................. 35