LxT Manual
LxT1
B
-
11
d) Periodic Testing
Table 2 lists values of Larson Davis LxT1 with PRMLxT1 and 377B02 Microphone adjustment data
of A-weighted levels used for periodic measurements.
.
e) Linear Operating Range
A-weighted sound levels for the LxT1L at the upper and lower limits of the linear operating ranges.
31.5 Hz
1 kHz
4 kHz
8 kHz
12.5 kHz
17.5 dB to 79.4 dB
20 dB to 118.8 dB
21 dB to 119.8 dB
21 dB to 117.7 dB
20 dB to 114.5 dB
Table 2 - Larson Davis LxT1 with PRMLxT1 and 377B02 Microphone
adjustment data of A-weighted levels used for periodic testing
0° Free Field
0° Free Field
0° Free Field
Corrections
0° Free Field
Corrections
expanded
Corrections
with WS
Corrections
with WS
uncertainty
from
from
from
from of
Corrections
B&K 4226
B&K 4226
B&K UA0033
B&K UA0033
@ 95%
Frequency
Calibrator¹
Calibrator¹ EA¹ EA¹
confidence
Hz dB dB dB dB dB
31.62 -0.2 -0.2 0.0 -0.1 0.25
63.10 -0.1 -0.2 0.0 -0.1 0.25
125.89 0.0 -0.1 0.0 -0.1 0.25
251.19 -0.1 -0.1 0.0 -0.1 0.25
501.19 0.0 0.0 0.1 0.1 0.25
1000.00 0.0 0.0 0.0 0.0 0.25
1995.26 0.6 0.9 0.6 0.9 0.30
3981.07 1.1 1.1 1.0 1.0 0.35
7943.28 2.3 1.9 2.9 2.6 0.40
12589.25 5.2 4.4 6.8 6.0 0.50
15848.93 5.4 4.3 8.1 7.0 0.60
¹add numbers in this column to levels read on the LxT to correct to the 0° Free Field level
at a specific frequency
EA - Electrostatic Actuator
WS - Wind Screen
Содержание SoundExpert LxT
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