User manual

CR:306 Sound Level Meter User Manual
Page 3
Overview. ..................................................................................................................... 4
First time use. .............................................................................................................. 4
CR:306 Instrument Check List ...................................................................................... 4
Instrument Controls ..................................................................................................... 5
Taking Measurements................................................................................................... 7
Fundamental precautions. .............................................................................................. 7
Display and Indicators .................................................................................................. 8
Display ......................................................................................................................... 8
Indicator ...................................................................................................................... 8
Fitting a New Battery ................................................................................................... 9
Field Calibration ......................................................................................................... 10
Calibration Procedure ................................................................................................... 10
Technical Specification ............................................................................................... 11
Appendix 1 - CE Declaration of Conformity ................................................................. 12
Appendix 2 Acoustic Calibrator Operation. ................................................................. 13
Switching on the Calibrator ........................................................................................... 13
Permanent-on Mode ................................................................................................................ 13
Calibrating a Sound Level Meter. ................................................................................... 14
Background Noise ........................................................................................................ 14
Stabilisation ................................................................................................................ 14
Changing the Battery ................................................................................................... 15
Battery type. .............................................................................................................. 15
Specification. .............................................................................................................. 16
Technical Information .................................................................................................. 17
Free Field Correction .................................................................................................... 18
Microphone Correction Values ................................................................................................... 18
Example ................................................................................................................................ 18
Warranty Information. .......................................................... Error! Bookmark not defined.
Cirrus Research Offices ......................................................... Error! Bookmark not defined.