optimus sound level meter user manual
Page 3
About this manual
•
The instructions in this user manual refer to the operation of Cirrus Research plc
optimus
sound level meters with version 2.4 or higher of the firmware.
•
The instruments described in this manual are the
optimus
yellow (CR:150
series),
optimus
red (CR:160 series),
optimus
green (CR:170 series) and
optimus
purple (CR:190 series).
•
Some functions described in this manual are only available on red or green
versions of the
optimus
sound level meters. Where functions are applicable to
only some instruments in the range, this will be clearly indicated in the text.
•
In this manual, “
optimus
” is used as a general reference for the
optimus
sound
level meters and “calibrator” is used as a general reference for an acoustic
calibrator.
•
This manual describes the recommended usage of the
optimus
. Any warnings
will be indicated by
•
The additional information required for testing in accordance with IEC 61672 is
provided as a supplementary document,
Optimus
Sound Level Meters
Technical Data Part B, which is available for download at
www.cirrusresearch.co.uk/library/
optimus
•
It is not possible to change the way that the instrument measures through the
software or firmware. Any legal metrology aspects of the instrument cannot be
affected by any changes made in the instrument.
•
The Common Specifications section on page 30 defines which standards relate
to the different functions available in the instruments. Additional approvals and
certifications may apply to the instruments and these will be listed in the
Appendices.
•
More detailed explanations of the audio recording templates, tonal noise
detection and the repeat measurement timers are available to download from
the Cirrus website at
www.cirrusresearch.co.uk/library/optimus
•
Quick Start Guides for the
optimus
sound level meters can be downloaded
from the Cirrus website at
www.cirrusresearch.co.uk/library/
optimus
