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Preamplifier Model: PRMLxT2 Serial Number: 0100
Larson Davis
Frequency response of this model PRMLxT2 preamplifier was tested at a level of 5.356 Vrms with 18pF microphone
capacitance and driving a short cable. Output level at 1kHz is 0.9999 Vrms (-0.001 dBV), uncertainty 0.035 dB.
Output is 3.470 V DC, uncertainty 0.001. Results are displayed relative to the level at 1kHz.
0.5
Level
0.0
(dB)
-0.5
-1.0
-1.5
-2.0
2.5
5
10
Freq (Hz) Measured (dB) Uncert (dB)
--------- ------------- -----------
2.51
-0.09
3.16
-0.06
3.98
-0.05
5.01
-0.03
6.31
-0.02
7.94
-0.01
10.00
-0.01
12.59
-0.00
15.85
-0.00
19.95
-0.00
25.12
-0.00
31.62
-0.00
39.81
-0.00
50.12
-0.00
63.10
-0.00
79.43
-0.00
100.00
-0.00
125.89
-0.00
158.49
-0.00
199.53
-0.00
251.19
0.00
316.23
0.00
398.11
0.00
501.19
0.00
Noise floor data: 1kHz (1/3 Octave) = 0.15 uV, -16.3 dBuV, uncertainty = 0.47 dB
Flat (20Hz-20kHz) = 1.4 uV, 3.2 dBuV, uncertainty = 0.47 dB
Awt = 1.0 uV, 0.1 dBuV, uncertainty = 0.46 dB
Uncertainties are given as expanded uncertainty at ~95% confidence level (k = 2).
Technician: Alex T Tester
Handbuch LxT
Certificate of Electrical Conformance
20
50
100
200
501
Frequency (Hz)
Tolerance (dB)
--------------
0.075
+0.07, -0.25
0.058
+0.09, -0.21
0.058
+0.10, -0.18
0.036
+0.10, -0.15
0.036
+0.10, -0.13
0.036
+0.10, -0.11
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
0.016
+0.10, -0.10
Test Date: Apr 11, 2005
Abb: A-18: Konformitätserklärung; PRMLxT2.
1000
1995
5012
10000
19953
Freq (Hz) Measured (dB) Uncert (dB)
--------- ------------- -----------
630.96
0.00
0.016
794.33
0.00
0.016
1000.00
0.00
0.016
1258.90
0.00
0.016
1584.90
0.00
0.016
1995.30
0.00
0.016
2511.90
0.00
0.016
3162.30
0.00
0.016
3981.10
0.00
0.016
5011.90
0.00
0.016
6309.60
0.00
0.016
7943.30
0.00
0.016
10000.00
-0.01
0.016
12589.00
-0.00
0.016
15849.00
-0.00
0.016
19953.00
-0.00
0.016
25250.00
-0.00
0.022
31500.00
-0.00
0.022
39750.00
0.00
0.022
50000.00
0.00
0.022
63000.00
0.00
0.047
79500.00
-0.00
0.047
100000.00
0.00
0.047
126000.00
0.00
0.063
50000 100000
Tolerance (dB)
--------------
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.10, -0.10
+0.12, -0.12
+0.14, -0.14
+0.16, -0.16
+0.18, -0.18
+0.20, -0.20
A-51
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