HBK 4231, User Manual

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Contents
CHAPTER 1
Introduction and Controls .................................................................. 1
1.1 Description.................................................................................... 1
1.2 On/Off Button ............................................................................... 1
1.3 +20 dB Level Step.......................................................................... 2
1.4 Batteries........................................................................................ 3
1.5 Adapters........................................................................................ 4
CHAPTER 2
Operation........................................................................................... 7
2.1 Calibration Procedure ................................................................... 7
2.2 Correction for Sound Field Influence ............................................ 8
CHAPTER 3
Characteristics.................................................................................. 11
3.1 Influence of Ambient Pressure ................................................... 11
3.2 Influence of Ambient Temperature ............................................ 12
3.3 Influence of Load Volume ........................................................... 13
3.4 Traceability ................................................................................. 13
3.5 Stability ....................................................................................... 13
3.6 Recalibration of the Calibrator ................................................... 13
3.7 Information for Pattern Evaluation Tests ................................... 14
3.8 How the Calibrator Works .......................................................... 14
3.9 Construction ............................................................................... 17
CHAPTER 4
Service and Repair............................................................................ 19
CHAPTER 5
Specifications ................................................................................... 21