Svantek SVAN 971 - Page 216

SVAN 971 User Manual – Appendixes
216
If <6h-18h> option is selected for the <Day Time Limits> in the instrument then:
T
d
(day-time) starts from 6 am and ends at 6 pm,
T
e
(evening-time) starts from 6 pm and ends at 10 pm,
T
n
(night-time) starts at 10 pm and ends at 6 am.
If <7h-19h> option is selected for the <Day Time Limits> in the instrument then:
T
d
(day-time) starts from 7 am and ends at 7 pm,
T
e
(evening-time) starts from 7 pm and ends at 11 pm,
T
n
(night-time) starts at 11 pm and ends at 7 am.
Ld
Ld is calculated for: T
d
≠ 0, T
e
= 0, T
n
= 0.
 
 










d
T
2
0W
d
dtptr
T
1
log10Ld
Le
Le is calculated for: T
d
= 0, T
e
≠ 0, T
n
= 0.
 
 










e
T
2
0W
e
dtptr
T
1
log01dB5Le
Ln
Ln is calculated for: T
d
= 0, T
e
= 0, T
n
≠ 0.
 
 










n
T
2
0W
n
dtptr
T
1
log01dB10Ln
Lde
Lde is calculated for: T
d
≠ 0, T
e
≠ 0, T
n
= 0.
 









10Le10Ld
1041012
412
1
log10Lde
Len
Len is calculated for: T
d
= 0, T
e
≠ 0, T
n
≠ 0.
 









10Ln10Le
108104
84
1
log10Len
Lnd
Lnd is calculated for: T
d
≠ 0, T
e
= 0, T
n
≠ 0.
 









10Ld10Ln
1012108
128
1
log10Lnd
Lden
Lden is calculated for: T
d
≠ 0, T
e
≠ 0, T
n
≠ 0.
 









10Ln10Le10Ld
1081041012
4812
1
log10Lden
LEPd
Daily Personal Noise Exposure is the noise
exposure level for a nominal 8-hour working
day. The LEPd result is calculated on the
base of the LEQ
h8
T
T
log10LeqLEPd
e

Ltm3 and Ltm5
The Ltm3 and Ltm5 results (Takt-Maximal Levels) are calculated according to the German
standard TA Lärm.