Built-in Data Logger
You have to activate the 104 dB and verify the TP3 voltage, that should be 158,5 mV. You can
regulate this point adjusting the trimmer T1.
You have to verify the voltage on TP1 and adjusting the measured value with trimmer T3 to
set -132,0 mV.
You have to obtain at the output on TP2 a voltage of 3,667 Volts and an output current of
15,733 mA. You can adjust this value using the trimmer T2.
If all operations have been correctly performed you can set a 94 dB pressure level and obtain
the corresponding calibration values reported in the calibration sheet.
If you have different noise pressure levels you can verify them in the calibration sheet at the
corresponding lines.
Noise meter calibration sheet
dB
mV IN
TP1
OUT TP2
dB
mV IN
TP1
OUT TP2
dB
mV IN
TP1
OUT TP2
Param
45.0
1.000
0.00
0.000
55.0
3.162
-30.00
0.833
85.0
100.0
-120.00
3.333
5
45.1
1.012
-0.30
0.008
56.0
3.548
-33.00
0.917
86.0
112.2
-123.00
3.417
45
45.2
1.023
-0.60
0.017
57.0
3.981
-36.00
1.000
87.0
125.9
-126.00
3.500
0.083333
45.3
1.035
-0.90
0.025
58.0
4.467
-39.00
1.083
88.0
141.3
-129.00
3.583
27.78
45.4
1.047
-1.20
0.033
59.0
5.012
-42.00
1.167
89.0
158.5
-132.00
3.667
45.5
1.059
-1.50
0.042
60.0
5.623
-45.00
1.250
90.0
177.8
-135.00
3.750
45.6
1.072
-1.80
0.050
61.0
6.310
-48.00
1.333
91.0
199.5
-138.00
3.833
45.7
1.084
-2.10
0.058
62.0
7.079
-51.00
1.417
92.0
223.9
-141.00
3.917
45.8
1.096
-2.40
0.067
63.0
7.943
-54.00
1.500
93.0
251.2
-144.00
4.000
45.9
1.109
-2.70
0.075
64.0
8.913
-57.00
1.583
94.0
281.8
-147.00
4.083
46.0
1.122
-3.00
0.083
65.0
10.000
-60.00
1.667
95.0
316.2
-150.00
4.167
46.5
1.189
-4.50
0.125
66.0
11.220
-63.00
1.750
96.0
354.8
-153.00
4.250
47.0
1.259
-6.00
0.167
67.0
12.589
-66.00
1.833
97.0
398.1
-156.00
4.333
47.5
1.334
-7.50
0.208
68.0
14.125
-69.00
1.917
98.0
446.7
-159.00
4.417
48.0
1.413
-9.00
0.250
69.0
15.849
-72.00
2.000
99.0
501.2
-162.00
4.500
48.5
1.496
-10.50
0.292
70.0
17.783
-75.00
2.083
100.0
562.3
-165.00
4.583
49.0
1.585
-12.00
0.333
71.0
19.953
-78.00
2.167
101.0
631.0
-168.00
4.667
49.5
1.679
-13.50
0.375
72.0
22.387
-81.00
2.250
102.0
707.9
-171.00
4.750
50.0
1.778
-15.00
0.417
73.0
25.119
-84.00
2.333
103.0
794.3
-174.00
4.833
50.5
1.884
-16.50
0.458
74.0
28.184
-87.00
2.417
104.0
891.3
-177.00
4.917
51.0
1.995
-18.00
0.500
75.0
31.623
-90.00
2.500
105.0
1000.0
-180.00
5.000
51.5
2.113
-19.50
0.542
76.0
35.481
-93.00
2.583
52.0
2.239
-21.00
0.583
77.0
39.811
-96.00
2.667
52.5
2.371
-22.50
0.625
78.0
44.668
-99.00
2.750
53.0
2.512
-24.00
0.667
79.0
50.119
-102.00
2.833
53.5
2.661
-25.50
0.708
80.0
56.234
-105.00
2.917
54.0
2.818
-27.00
0.750
81.0
63.096
-108.00
3.000
54.5
2.985
-28.50
0.792
82.0
70.795
-111.00
3.083
83.0
79.433
-114.00
3.167
84.0
89.125
-117.00
3.250
ORION S.r.l.
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