Cirrus Research CR:811C User Manual

CR:800C Series Sound Level Meter User Manual
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When the Auto Synchronise function has been selected, the display will show the Sync
at the bottom of the screen with a tick next to it as shown above.
4.7 Measurement Range
One of the most important features of a Sound Level Meter is the measurement range.
If the measurement range is set too high, the instrument may not be able to record low
levels. If the measurement range is set too low, high noise levels will overload the
instrument and make the measurement invalid. Therefore it is vital that the correct
measurement range is chosen for the noise to be recorded.
To check the current measurement range, press the Range key.
Key Press Display Comments
The current measurement range is
40dB to 110dB.
The measurement range in this example is 40dB to 110dB. If the noise level is below
40dB, the instrument will indicate Under-Range. If the noise level is above 110dB, the
instrument will indicate Overload.

Cirrus Research CR:811C Specifications

General

Brand	Cirrus Research
Model	CR:811C
Category	Measuring Instruments
Language	English