Larson Davis 831, Руководство пользователя

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Model 831 Manual Model 831 Specifications A-5
The Octave Band Analysis specifications in the following tables were determined with an ADP090
equivalent microphone.
Nominal
Frequency (Hz)
PRM 831
Direct Input
2
0 dB Gain
(dB)
+20 dB Gain
(dB)
0 dB Gain (dB) +20 db Gain (dB)
No
rma
l
OBA
Ra
nge Linearity Ra
nge
1
8.0

78
62 to 140

83
37 to 120

78
62 to 140 dB

V

83
37 to 120 dB

V
16.0

85
55 to 140

88
32 to 120

85
55 to 140 dB

V

88
32 to 120 dB

V
31.5

87
53 to 140

89
31 to 120

87
53 to 140 dB

V

89
31 to 120 dB

V
63.0

92
48 to 140

90
30 to 120

92
48 to 140 dB

V

90
30 to 120 dB

V
125.0

95
45 to 140

89
31 to 120

95
45 to 140 dB

V

89
31 to 120 dB

V
250.0

94
46 to 140

92
28 to 120

94
46 to 140 dB

V

92
28 to 120 dB

V
500.0

90
50 to 140

91
29 to 120

90
50 to 140 dB

V

91
29 to 120 dB

V
1000.0

95
45 to 140

95
25 to 120

95
45 to 140 dB

V

95
25 to 120 dB

V
2000.0

92


95
25 to 120

92
48 to 140 dB

V

95
25 to 120 dB

V
4000.0

90
50 to 140

92
28 to 120

90
50 to 140 dB

V

92
28 to 120 dB

V
8000.0

88
52 to 140

87
33 to 120

88
50 to 140 dB

V

87
33 to 120 dB

V
16000.0

85
55 to 140

85
35 to 120

85
55 to 140 dB

V

85
35 to 120 dB

V