Svantek SV 200A User Manual

195
SV 200A User Manual
D.2 DEFINITIONS AND FORMULAS OF THE SLM RESULTS
The instrument calculates the sound measurement results for three profiles. The calculation flow diagram for
one profile is presented below:
OVL
Percentage of the overloaded input signal, which occurred during the current time
period of the measurement (T)
L(A/C/Z)peak
Peak sound level expressed in dB, for
frequency weightings A, C, Z, symbols are
LApeak, LCpeak and LZpeak. Peak sound
level is calculated for the given T.
( )








=
2
0
2
W
p
tp
maxlog10Peak
T
L(A/C/Z)(S/F/I)m
ax
The highest time weighted sound level (Max)
expressed in dB, within a stated time interval,
for frequency weightings A, C, Z and time
weightings F, S, I symbols are LAFmax,
LASmax, LCFmax, LCSmax etc.
( )








=

2
0
2
W
p
tp
maxlog10Max
T
L(A/C/Z)(S/F/I)mi
n
The lowest time weighted sound level (Min)
expressed in dB, within a stated time interval,
for frequency weightings A, C, Z and time
weightings F, S, I symbols are LAFmin,
LASmin, LCFmin, LCSmin etc.
( )








=

2
0
2
W
p
tp
minlog10Min
T
p
2
wτ
(t)
τ = Fast
τ = Slow
τ = Imp
p
w
(t)
p(t)
p
2
w
(t)
Lpeak
Lmax, Lmin, Spl,
Ltm3, Ltm5
Leq,
SEL,
L(den),
LEPd

Svantek SV 200A Specifications

General

Brand	Svantek
Model	SV 200A
Category	Measuring Instruments
Language	English