34
•
The value of the selected percentile belonging to the sound-pressure level measured for
the octave bands centred on frequencies 31.5, 63, 125, 250, 500, 1000, 2000, 4000, 8000
and 16000 Hz (without frequency weighting) and for each consecutive interval of T
(integration time) duration.
•
The value of the selected percentile belonging to the total sound-pressure level with
frequency weighting A.
To select the percentile press
(left) or
(right).
By pressing
you access the NC spectrum analyser 1/1 screen.
NOTE: The percentile levels are calculated on the basis of the 125 ms continuous equivalent pressure
levels. The width of the classes is 0.5 dB.
NC Spectrum analyser 1/1 screen
This screen displays the following information in real time:
•
The value of the NC (Noise Criterion) curve that does not exceed the measured spectrum.
In other words, the value of the NC curve that defines this spectrum.
•
The value of the NC (Noise Criterion) curve that has not been exceeded in each octave
band. This information serves to ascertain which octave band fixes the value of the NC
curve of the total spectrum. That is, at least one of these values must be equal to the value
of the NC curve
that defines the total spectrum.
By pressing
you access the
graphic
spectrum analyser 1/1 screen.
NOTE:
The functions values will be refreshed on the screen each second.
2.4.4 Stopping measurement
By pressing
you temporarily halt measurement. The state of measurement indicator
will change from to
.
While the
SC310
is in pause mode ( ) you may continue to consult
the functions measured until the measurement was temporarily interrupted. To resume
measurement, press
.
