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Preamplifier Model: PRMLxT1 Serial Number: 0163
Larson Davis
Frequency response of this model PRMLxT1 preamplifier was tested at a level of 13.858 Vrms with 18pF microphone
capacitance and driving a short cable. Output level at 1kHz is 0.9442 Vrms (-0.499 dBV), uncertainty 0.045 dB.
Output is 3.511 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
-0.19
3.16
-0.14
3.98
-0.10
5.01
-0.07
6.31
-0.05
7.94
-0.03
10.00
-0.03
12.59
-0.02
15.85
-0.02
19.95
-0.02
25.12
-0.02
31.62
-0.01
39.81
-0.01
50.12
-0.01
63.10
-0.01
79.43
-0.01
100.00
-0.01
125.89
-0.01
158.49
-0.01
199.53
-0.01
251.19
-0.01
316.23
-0.01
398.11
-0.00
501.19
-0.00
Noise floor data: 1kHz (1/3 Octave) = 0.16 uV, -15.7 dBuV, uncertainty = 0.47 dB
Flat (20Hz-20kHz) = 1.7 uV, 4.4 dBuV, uncertainty = 0.47 dB
Awt = 1.0 uV, 0.3 dBuV, uncertainty = 0.46 dB
Uncertainties are given as expanded uncertainty at ~95% confidence level (k = 2).
Technician: Ron Harris
Handbuch LxT
Certificate of Electrical Conformance
20
50
100
200
Frequency (Hz)
Tolerance (dB)
--------------
0.075
-0.07, -0.32
0.058
-0.01, -0.25
0.058
+0.02, -0.20
0.036
+0.05, -0.16
0.036
+0.06, -0.14
0.036
+0.07, -0.12
0.016
+0.08, -0.11
0.016
+0.08, -0.10
0.016
+0.08, -0.10
0.016
+0.09, -0.10
0.016
+0.09, -0.10
0.016
+0.09, -0.10
0.016
+0.09, -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: 30SEP2005
Abb. A-16: Konfomitätserklärung; PRMLxT1.
501
1000
1995
5012
10000
Freq (Hz) Measured (dB) Uncert (dB)
--------- ------------- -----------
630.96
-0.00
794.33
-0.00
1000.00
0.00
1258.90
0.00
1584.90
0.00
1995.30
0.00
2511.90
0.00
3162.30
0.00
3981.10
0.01
5011.90
0.01
6309.60
0.01
7943.30
0.01
10000.00
0.01
12589.00
0.01
15849.00
0.01
19953.00
0.02
25250.00
0.02
31500.00
0.02
39750.00
0.03
50000.00
0.03
63000.00
0.03
79500.00
0.04
100000.00
0.05
126000.00
0.06
19953
50000 100000
Tolerance (dB)
--------------
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
0.022
+0.10, -0.10
0.022
+0.10, -0.10
0.022
+0.10, -0.10
0.022
+0.12, -0.12
0.047
+0.14, -0.14
0.047
+0.16, -0.16
0.047
+0.18, -0.18
0.063
+0.20, -0.20
A-41
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