CR:308 & CR:310 sound level meters - instrument handbook
2CR:308 & CR:310 sound level meters - instrument handbook
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CR:308 & CR:310 sound level meters - instrument handbook CR:308 & CR:310 sound level meters - instrument handbook
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The contents of this manual, including any illustrations, technical informaiton and
descriptions, were correct at the time of printing. Cirrus Research plc reserves the right
to make any changes necessary, without notice, in line with the policy of continuing
product development and improvement.
No part of this publication may be duplicated, reprinted, stored in a data processing
system or transmitted by electronic, mechanical, photographic or other means, or
recorded, translated, edited, abridged or expanded without the prior written consent
of Cirrus Research plc.
No liability is accepted for any inaccuracies or omissions in this manual, although due
care has been taken to ensure that it is complete and as accurate as possible.
Accessories supplied by Cirrus Research plc have been designed for use with the
instrumentation manufactured by Cirrus Research plc. No responsibility is accepted for
damage caused by the use of any other parts or accessories.
In order to take account of a policy of continual development, Cirrus Research plc
reserves the right to change any of the information contained in this publication
without prior notice.
Produced by Cirrus Research plc, Acoustic House, Bridlington Road, Hunmanby, North
Yorkshire, YO14 0PH, United Kingdom.
Version 1.1
cr308-310/rev2/1018/en
© Copyright Cirrus Research plc 2018
Contents
1. Overview
2. First time use
3. Instrument features
4. Display interface
5. Keypad interface
6. Instrument operation
6.1 Selecting the frequency and time weighting
6.2 Maximum, minimum and LCpk values
6.3 Setting the level alarm (CR:308)
6.4 Performing and printing a measurement (CR:310)
7. Calibrating the meter
8. Specification and technical information
9. Reference information for periodic testing
10. Options and accessories
11. Serial connection
12. Appendix A - CE Declaration of Conformity
13. Appendix B - Warranty information
14. Cirrus Research oces
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