Cirrus Research CR308, Instrument Handbook

Page: 6 / 28

Page 6 CR:308 & CR:310 – User Manual
2 First use
Before using your meter for the first time, please check the contents of your instrument’s case,
which should include the following:
• Sound level meter and Class 2 microphone
• Windshield
• 2 x AA batteries
Optional accessories
• Class 2 acoustic calibrator
You may have other accessories, depending on your package.
Before starting a measurement, remove the black microphone protective cap (if fitted) and where
necessary, place the windshield carefully over the end of the microphone capsule.