CESVA DC112 - Page 40

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2. FREQUENCY WEIGHTING
f (Hz) L (dB)
Freq. weight. A
(dB)
t (s) E (Pa²h)
63 137,0 -26,2 1 0,013358
125 137,0 -16,1 1 0,136697
250 137,0 -8,6 1 0,768701
500 137,0 -3,2 1 2,665370
1000 137,0 0 1 5,568747
2000 137,0 1,2 1 7,341038
4000 137,0 1 1 7,010637
8000 137,0 -1,1 1 4,322724
3. RESPONSE TO SHORT DURATION SIGNALS
f (Hz)
Duration
(ms)
Burst
ratio
L
A
(dB) t (s) E (Pa²h) Tolerance
4000 - - 95,0 10 E
4k
ref ref
4000 10 1:100 115,0 10 E
4k
-21% +26%
4000 1 1:1000 125,0 10 E
4k
-21% +26%
4000 1 1:1000 130,0 10 10 x E
4k
-29% +41%
4000 1 1:1000 140,0 10 100 x E
4k
-29% +41%
4. RESPONSE TO UNIPOLAR PULSES
Polarity D (ms)
Period of
repetition (ms)
L
pico
(dB) t (s) E (Pa²h) Tolerance
+ 0,5 5 135,0 50 E
+
ref ref
- 0,5 5 135,0 50 E
+
-21% +26%
5.
LATCHING OVERLOAD INDICATOR
f (Hz) D (ms) L
A
(dB) Indicator
1000 4 140,0 no
1000 4 143,0 yes