Percentiles; Show Ln < 5 Minutes - Castle group dBAir Operating Manual

Sound level meter
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Percentiles

Choose Percentiles to enable or disable Percentiles, commonly referred to as LNs, by
using the OK key or the Left, Right Arrow keys to amend Enable LNs between the
following options: -
• Off, Measure 1, Measure 2 or Measure 1 & 2
When LNs are enabled the selection of individual LNs becomes available using the Up
or Down Arrow keys to scroll.
A maximum of ten percentiles can be selected and each one (L
individually set to the following value: -
• Off or 1 to 99
Use the Left or Right Arrow keys to amend the values for each LN.
Press the OK key to toggle any LN Off/On. Individually disabled LN data will not be
displayed or recorded.
Show LN < 5 Minutes
Percentiles (LNs) require at least 5 minutes recording to gather enough data to be
accurate, however they may be shown where the recording time is lower than 5
minutes. Enable this option if this is required.
53
to L
) can be
N1
N10

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