DeltaOHM HD2010UC/A, Руководство по эксплуатации

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HD2010UC/A
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V4.1
DESCRIPTION OF DISPLAY MODES
The HD2010UC/A measures simultaneously 3 selectable parameters (statistic ones too) and
displays them at a fixed frequency corresponding to 2 measurements/s; simultaneously measures the
A weighted sound pressure level with FAST time constant and displays it at 8 samples/s. It calcu-
lates also the spectra by octave bands and by third octave bands (when the “Third Octave” option is
active), with a maximum frequency of 2 spectra/s. As a statistical analyser, it calculates the prob-
ability and the cumulative distribution. To be able to display all these data, the HD2010UC/A, pro-
vides 6 different display modes as shown in the figures below.
56.9
60.8
79.3
30
110
01:08:25
Tint= s
10
LFp
Leq
Lpk
dBA
dBC
dBC
Fig. 1 - SLM Fig. 2 - Time Profile
Fig. 3 - Octave Fig. 4 - Third Octave
Fig. 5 – Probability distribution Fig. 6 – Percentiles levels
Press
MODE at any time to jump from a screen page to the next one. The display will show: first
the SLM screen with 3 measuring parameters in numeric format, the Profile screen of the A
weighted sound pressure level with FAST time constant (L
AFp
), then the Octave screen with the oc-
tave spectra from 31.5 Hz to 8 kHz and, (if the “Third Octave” option is active) the third octave
spectra from 25Hz to 12.5 kHz, the probability distribution and the percentile levels screens. .
Upon power on, the sound level meter displays the SLM screen.
Display of Octave and Third Octave display can be disabled using the specific parameters in
the menu (Menu >> Statistic Analyser >> Display…). Also the Probability and Percentiles screens
can be disabled, using parameter Menu >> Statistic Analyser >> Statistics Display (please see para-
graph “DESCRIPTION OF MENU FUNCTIONS” on page 39)