Larson Davis System 824, Справочное руководство

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11/8/00 Using ID Setting Files 7-19
Use the
u
and
d
keys to move
from one setting to the next. Then use
the
r
key to change the selected
setting. The
l
key is used to
return to previous menus.
The following is a table of the L
N
settings:
NOTE: An Ln percentage of 0 provides
Lmax for the Ln level.
Enable Ln
This function turns on or off the automatic storage of the six
Ln percentile levels for the overall measurement.
No - The six Ln levels are not stored for the over-
all measurement.
NOTE: If Lns are enabled in the SSA
instrument, then the Back-Erase feature
is no longer available. (See page 3-10
for information on the Back-Erase fea-
ture)
Yes - The six Ln levels are stored for the overall
measurement.
Start Level
The Start Level allows you to set the minimum decibel level
to be included in the statistical histogram and calculated Ln
Percentiles.
Menu Items Available Settings Options
Enable Ln (SSA
only) No
Yes
Start Level 0-99 dB
Ln 1 Percent 0.00 to 99.99%
Ln 2 Percent 0.00 to 99.99%
Ln 3 Percent 0.00 to 99.99%
Ln 4 Percent 0.00 to 99.99%
Ln 5 Percent 0.00 to 99.99%
Ln 6 Percent 0.00 to 99.99%
Spectral Ln (SSA
only) None
Overall
Interval
NOTE: Interval Spectral LNs will not be
available when R.I. Correction is turned
on.