2 Vocabulary
The terms and abbreviations listed below will be used throughout this user manual.
L : represents the measurement mode: conventional sound level meter
L-St : represents the measurement mode : conventional sound level meter with storage function. The sound pressure level is stored into the
memory at a sampling rate which is defined and planned.
L-Leq : represents the measurement mode : conventional and integrating-averaging. Values are measured simultaneously.
L-St : represents the measurement mode : integrating-averaging sound level meter with storage function The equivalent continuous sound level on
the logging time (DI) is stored into the memory.
S1+S2 : denomination for measuring or calculating the levels of 2 sound sources.
LXeq : X-weighted equivalent continuous sound level on the logging time or on the total time of the measurement.
LXeqM : Maximum X-weighted equivalent continuous sound level on the logging time, on the total time of the measurement.
LXeqm : Minimum X-weighted equivalent continuous sound level on the logging time, on the total time of the measurement.
LXE : X-weighted sound exposure level.
LXY : X-weighted acoustic pressure level ; time weighting : Y
LXYmax : Maximum X-weighted sound pressure level ; time weighting : Y
LXYmin : Minimum X-weighted sound pressure level ; time weighting : Y
LUpK : U-weighted peak sound level.
Echant. : time between two successive storages of the sound pressure level into the memory, also called : Sampling rate.
DI : Programmable logging time for the calculation of the equivalent continuous sound level stored into the memory, also called : elementary
integration time.
X : generic marking for frequency weightings, A – C or Z standardized (L, Leq, LE values)
U : generic marking for frequency weightings, C or Z standardized (Lpk values)
Y : generic marking for time weightings with : « F » for Fast, « S » for Slow or « I » for Impulse.
Man : manual mode of measurement launching
I/O : Launching mode of the measurement controlled by I/O plugs.
SXX : order number of the measurement sessions. Limited to 25.
RST : reset of calculations of maximum or minimum values memorized – erasing of measurement session or of the whole memory.
Sto. : storage of measurement session into the memory.
S1 : name for measuring or calculating the equivalent continuous sound level of a first sound source.
S2 : name for measuring or calculating the equivalent continuous sound level of a second sound source.
S1+S2 : name for measuring or calculating the equivalent continuous sound level of the two sound sources.
00/00:00:00 : format of the measurement time in Days/hours:minutes:seconds
00/00:00 : format of the measurement time in Days/hours:minutes
00:00:00 : format of the measurement time in Days/hours:minutes:seconds or format of the current time
18/11 : format of date
00:00 : format of current time in hours/minutes
Pond. : A, C or Z frequency weightings
Cte : time weighting or time constant : Fast – Slow - Impulse
S/S : integration time controlled in Manuel mode : Start/Stop
C.Cl : free field correction term in calibration mode.
Corr. : corrective term of nominal benefit in calibration mode.
L01 – L10 – L50 – L90 – L95 : Normalised statistics distribution, used in environmental studies
5 Vocabulary
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