Larson Davis System 824, Reference Manual

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B-16 824 Reference Manual 9/12/00
Sound Exposure (E) is calculated and displayed in pascal
squared hours as needed in some of the European Countries.
This value is read with the R162 command and is available
in the top line of the DOSE-a display. The formula used is:
E = T • (10^(Leq/10)) • 20µPa
2
,
where E is the Exposure, T is the elapsed time in hours, and
20µPa
2
is the reference sound pressure 20 micro pascal
squared.
R154 ALL Internal UwPk detector level nnn.nn dB
R155 ALL Number of Bytes in Keyboard Stack
This is used with keyboard simulation
to prevent the loss of keys. nnn
R156 LOG Background Leq Time hhhhh:mm:ss.ss
R157 ALL Calibration Status Done, Wait, Waiting, Stable,
Unstable, Too High, Too
Low.
R158 ALL Total Memory Available nnnnnn
R159 ALL Memory Available in percent nnn.nn
R160 ALL OVERALL OVERLOAD FLAG c
R161 RTA Number of RTA Records nnnnn
R162 LOG Overall Sound Exposure nnnnn.n P
2
H
R163,x SSA, ISM,
LOG TAKT 3 nnn.n dB
R164,x SSA, ISM,
LOG TAKT 5 nnn.n dB
R165 LOG PassBy Time of Occurrence ddmmmyy hh:mm:ss
R166 LOG PassBy Event Duration hh:mm:ss / mm:ss.ss