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Ln – Statistic analysis, i.e. which percentage of all measurement values is larger than
or equal to the alarm value set by the user. For setting the alarm value, please see
chapter 7.
4.3 It has to be checked whether the weighting is right. If not, it can be changed by
pressing the
key 3-14 to select "A", "C" or "Flat".
With the "A" weighting selected, the frequency response of the device is similar to the
response of the human ear. "A" weighting is commonly used for environmental or
hearing conversation programs such as OSHA regulatory testing and noise
Ordinance law.
"C" weighting is a much flatter response and is suitable for the sound level analysis of
machines, engines etc.
Note: Weighting "A" will be automatically selected when measuring "Leq".
4.4 The
key 3-15 has to be used to select a Fast (125ms) or a Slow (1 second)
response time.
Fast has to be selected to capture noise peaks and noises that occur very quickly.
Slow response has to be selected to monitor a sound source that has a consistent
noise level or to average quickly changing levels. Slow response is selected for most
applications.
4.5 The reading is the highest one if the icon "max" appears on the display. The
reading is an instant value if "max" does not appear. This appearance is controlled by
pressing the
key 3-19 during the process of measurement.
5 Storing and recalling readings
5.1 In
state, the reading can be saved to the instrument together with measuring
conditions by pressing the
automatically, while the number of memorized readings increases for 1.
5.2 No matter, in
the
key 3-17. The browsing state is marked by `R` on the display.
In `R` state, all the readings memorized, can be recalled by pressing the
key.
5.3 To delete the memorized value in memory, the browsing state has just to be
entered and the reading to be deleted has to be located by pressing the
key.
Then the
key 3-21 has to be pressed. If there appears "Err0" on the display, this
indicates that there is no more reading to delete.
6
key 3-16. Then the icon
or in
state, the memorized data can be browsed by pressing
changes to
state
or
or
SU-BA-e-1713
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