B
-
16
LxT2
LxT Manual
e) Linear Operating Range
A-weighted sound levels for the LxT2 at the upper and lower limits of the linear operating ranges.
f) Linear Measurements Starting Level
The starting point for measuring the level linear errors on the reference range is 114 dB.
g) Electrical Insert Signals
The electrical design of the input device to insert electrical signals into the preamplifier for the
375A02 microphone is a series 18pF ± 5% capacitor. The Larson Davis ADP005 is used for this
purpose. The ADP005 can be used for noise floor measurements by attaching the included short on the
front of the ADP005.
31.5 Hz
1 kHz
4 kHz
8 kHz
12.5 kHz
77 dB to 99.6 dB
34 dB to 139 dB
33 dB to 138 dB
36 dB to 137.9 dB
38 dB to 134.7 dB
Larson Davis LxT2 with PRMLxT2B Preamp and 375B02 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
31.6
-0.4
-0.6
-0.4
-0.6
0.25
63.1
-0.3
-0.5
-0.4
-0.6
0.25
125.9
-0.4
-0.6
-0.3
-0.5
0.25
251.2
-0.3
-0.5
-0.2
-0.4
0.25
501.2
-0.1
-0.2
-0.1
-0.2
0.25
1000.0
0.0
0.0
0.0
0.0
0.25
1995.3
0.3
0.5
0.3
0.5
0.30
3981.1
1.2
1.2
1.1
1.1
0.35
7943.3
4.2
4.0
3.2
3.0
0.40
12589.3
6.3
6.4
6.4
6.0
0.50
15848.9
8.1
7.1
8.6
7.6
0.60
¹add numbers in this column to levels read on the LxT to correct to the 0° Free Field level at a specific frequen cy
EA - Electrostatic Actuator
WS - Wind Screen
Содержание SoundExpert LxT
Страница 1: ...LxT Manual for SoundTrack LxT SoundExpert LxT TM...
Страница 55: ...4 18 Measurement Settings Tabs LxT Manual...
Страница 81: ...5 26 View Spectrum Normalized Optional LxT Manual...
Страница 93: ...6 12 Data Storage After Improper Shutdown LxT Manual...
Страница 110: ...LxT Manual Certification 7 17...
Страница 143: ...11 6 Control Panel Data Explorer LxT Manual...
Страница 167: ...12 24 Options LxT Manual...
Страница 179: ...14 4 User LxT Manual FIGURE 14 5 shows the User tab FIGURE 14 5 User Tab...
Страница 185: ...15 6 File System LxT Manual...
Страница 191: ...16 6 Miscellaneous Parameters LxT Manual...
Страница 206: ...LxT Manual Technical Specifications A 9 Typical Z Weight Frequency Response...
Страница 259: ...A 62 Technical Specifications LxT Manual...