34
Reading the Display
Frequency weighting indicator
Shows the selected frequency weighting setting.
L
A
:A
L
C
:C
L
p
: FLAT
The third and fourth digit are shown when processed values are displayed.
The meaning is as follows.
L
Aeq
, L
Ceq
, L
peq
: Equivalent continuous sound level
L
AE
, L
CE
, L
pE
: Sound exposure level
L
Amax
, L
Cmax
, L
pmax
: Maximum time-weighted sound level
L
Amin
, L
Cmin
, L
pmin
: Minimum time-weighted sound level
L
A05
, L
C05
, L
p05
: 5% percentile sound level
L
A10
, L
C10
, L
p10
: 10% percentile sound level
L
A50
, L
C50
, L
p50
: 50% percentile sound level
L
A90
, L
C90
, L
p90
: 90% percentile sound level
L
A95
, L
C95
, L
p95
: 95% percentile sound level
Under-range indicator (shown as
U n
for sound level)
Shown when the sound level has fallen below -2.6 dB of the level range lower
limit, or below the measurement range.
Under-range indicator (shown as
U n
for processed value)
Shown when any of the processed values contains an under-range level. Lights
up when an under-range condition occurs during processing and stays lit until
the next processing measurement starts.
Back-erase ON indicator
Lights up when the data back-erase function (page 77) is enabled.
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