Larson Davis Spartan 821 - Page 55

Spartan 821/721 Manual Instrument Hardware Specifications A-8
1000 0.01 0.01 0 -0.6 0
1250 -0.07 0.01 -0.01 -0.74 -0.06
1600 -0.17 0.01 -0.01 -0.89 -0.13
2000 -0.28 0.02 0.04 -1.03 -0.18
2500 -0.38 0.07 0.19 -1.03 -0.12
3150 -0.41 0.19 0.52 -0.82 0.28
4000 -0.28 0.47 1.06 -0.5 1.25
5000 -0.12 0.91 1.65 -0.59 2.46
6300 -0.26 1.29 1.89 -1.27 2.61
8000 -0.66 1.69 1.78 -1.44 1.53
10000 -0.68 2.75 2.21 -1.54 2.88
12500 -0.44 3.52 1.36 -1.43 2.22
16000 -1.23 4.49 3.18 -0.06 4.61
TABLE A.3 Model 821 with 377B02/PRM821
Frequency
(Hz)
From B&K 4226 Calibrator From Electrostatic Actuator
Expanded
Uncertainty
of
Corrections
(k=2)
0° Free Field
Corrections
821 - No WS
1
1. Add values from these columns to levels read on the SLM to correct for the 0° free-field level at that frequency.
Note: These values were obtained at the following reference conditions: -40° C, 50% RH, 40 k/Pa
0° Free Field
Corrections
821 - With WS

0° Free Field
Corrections
821 - No WS

0° Free Field
Corrections
821 - With WS

(dB re 1 kHz) (dB re 1 kHz) (dB re 1 kHz) (dB re 1 kHz) (dB)
31.5 0.01 -0.06 0.07 0.00 0.25
63 -0.06 -0.13 0.02 -0.05 0.25
125 -0.03 -0.10 0.01 -0.06 0.25
250 -0.02 -0.10 0.01 -0.07 0.25
500 0.03 0.03 0.03 0.03 0.25
1000 0.00 0.10 0.00 0.10 0.25
2000 0.49 0.99 0.47 0.97 0.25
4000 1.01 1.11 0.87 0.97 0.25
8000 3.16 2.84 3.63 3.31 0.35
12500 5.86 4.79 7.26 6.19 0.50
16000 7.16 5.66 8.61 7.11 0.50
TABLE A.2 Correction Filter Shapes (Continued)
Frequency FF:FF FF:RI 2116 FF:RI 2116 FF:FF 2116 FF:90