Cirrus Optimus+, Руководство по эксплуатации инструмента

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Sound Level Meters – User Manual
5 Getting to know your instrument - features & capabilities
GPS sound level meters are designed around a modular structure that allows an
instrument to be upgraded and updated with new capabilities (functions), protecting your
investment for the future.
To check which capabilities your instrument has, go to the general view/page 5 (6 on some
models). This will list all the available capabilities on your device.
Some options cannot be changed while the instrument is measuring, and a message will appear
on the screen warning you that the options ‘cannot be changed while measuring’. Some menu
choices are disabled while measuring and will appear grey on the screen.
5.1 Views
The views are accessed by pressing the left and right control keys. The views are available when
the instrument is measuring, not measuring or in review mode, but the pages available in each
mode will differ.
Not measuring
When not measuring, the information shown is live, instantaneous values.
Measuring
When measuring, these live values are still shown, but you are also shown cumulative overall
values for the current measurement period.
Review mode
In review mode, the values shown are the overall cumulative values for the measurement.
5.1.1 General view
This shows the status of the instrument with the calibration data, the capabilities that are fitted,
the firmware version, the serial numbers of the sound level meter, microphone and preamplifier,
along with details of the standards that it meets.
5.1.2 Sound level view
This view shows the sound pressure level or SPL, with the maximum and minimum sound level
(Lmax and Lmin) with a choice of A, C or Z frequency weightings.