Larson Davis 824 User Manual

C-8 824 Reference Manual 9/29/09
* Flat frequency response for SSA instrument is extended at the low frequency end when Random Incidence
Correction is enabled.
Frequency Weightings for ISM, SSA, LOG and TAL instruments
Nominal
Frequency.
Exact
Frequency.
A
Weight
C Weight Flat Flat with
Random
Incidence
correction
(except
SSA)
Flat with
Random
Incidence
correction
(for SSA)
*
Electrical
Tole ra n ce
Microphone.
Tolerance
10 10.00 -70.4 -14.3 -6.0 -6.0 -0.3 ±1.8 ±2.2
12.5 12.59 -63.4 -11.2 -4.2 -4.2 -0.2 ±1.5 ±2.0
16 15.85 -56.7 -8.5 -2.9 -2.9 -0.2 ±1.2 ±1.8
20 19.95 -50.5 -6.2 -1.9 -1.9 -0.1 ±1.0 ±1.5
25 25.12 -44.7 -4.4 -1.3 -1.3 -0.1 ±0.9 ±1.1
31.5 31.62 -39.4 -3.0 -0.8 -0.8 -0.0 ±0.7 ±0.8
40 39.81 -34.6 -2.0 -0.5 -0.5 -0.0 ±0.7 ±0.8
50 50.12 -30.2 -1.3 -0.3 -0.3 -0.0 ±0.5 ±0.5
63 63.10 -26.2 -0.8 -0.2 -0.2 -0.0 ±0.5 ±0.5
80 79.43 -22.5 -0.5 -0.1 -0.1 -0.0 ±0.5 ±0.5
100 100.00 -19.1 -0.3 -0.1 -0.1 -0.0 ±0.5 ±0.5
125 125.00 -16.1 -0.2 0.0 0.0 -0.0 ±0.5 ±0.5
160 158.50 -13.4 -0.1 0.0 0.0 -0.0 ±0.5 ±0.5
200 199.50 -10.9 0.0 0.0 0.0 -0.0 ±0.5 ±0.5
250 251.20 -8.6 0.0 0.0 0.0 -0.0 ±0.5 ±0.5
315 316.20 -6.6 0.0 0.0 0.0 -0.0 ±0.4 ±0.6
400 398.10 -4.8 0.0 0.0 0.0 -0.0 ±0.4 ±0.6
500 501.20 -3.2 0.0 0.0 0.0 -0.0 ±0.4 ±0.6
630 631.00 -1.9 0.0 0.0 0.0 0.0 ±0.4 ±0.6
800 794.30 -0.8 0.0 0.0 0.0 0.0 ±0.4 ±0.6
1000 1000.00 0.0 0.0 0.0 0.0 0.0 ±0.4 ±0.6
1250 1259.00 0.6 0.0 0.0 0.0 0.0 ±0.4 ±0.6
1600 1585.00 1.0 -0.1 0.0 0.1 0.1 ±0.4 ±0.6
2000 1995.00 1.2 -0.2 0.0 0.2 0.2 ±0.4 ±0.6
2500 2512.00 1.3 -0.3 0.0 0.3 0.3 ±0.4 ±0.6
3150 3162.00 1.2 -0.5 0.0 0.5 0.5 ±0.4 ±0.6
4000 3981.00 1.0 -0.8 0.0 0.8 0.8 ±0.4 ±0.6
5000 5012.00 0.5 -1.3 0.0 1.3 1.3 ±0.5 ±-1.0
6300 6310.00 -0.1 -2.0 0.0 1,9 1,9 0.5, -0.7 1.0, -1.4
8000 7943.00 -1.1 -3.0 0.0 2.8 2.8 0.5, -1.0 1.0, -2.0
10000 10000.00 -2.5 -4.4 0.0 4.0 4.0 0.7, -1.3 1.3, -2.7
12500 12590.00 -4.3 -6.2 0.0 5.4 5.4 1.0, -2.0 2.0, -4.0
16000 15850.00 -6.6 -8.5 0.0 6.9 6.9 1.0, -3.0 2.0,

20000 19950.00 -9.3 -11.2 0.0 8.1 8.1 1.0, -4.0 2.0, 

Larson Davis 824 Specifications

General

Brand	Larson Davis
Model	824
Category	Measuring Instruments
Language	English