Appendix A Noise Study Report - Laserfiche WebLink

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Sound Level Meter Model: 820A Serial Number: A1584 Log Linearity, Differential Linearity and Range Data This Type 1 Sound Level Meter (including attached PRM828 preamplifier and ADP005 18 pF input adapter) was calibrated with a reference 1 kHz sine wave at a level of 114.0 dBSPL. The instrument's Log Linerarity A -weighted slow response was then electrically tested using a 1 kHz sine wave from 18.0 dBSPL to 138.0 dBSPL in 0.5 dB increments. 2.0 1.7 1.4 1.0 0.7 0.4 Error (dB) 0.0 -0.4 -0.7 -1.0 -1.4 -1.7 20 20 30 40 50 60 70 80 90 100 110 120 Level (dBSPL) Levl Meas Err j Levl Meas Err Levl Meas Err Levl Meas Err I Levl Meas Err dBSPL dBSPL dB i dBSPL dBSPL dB I dBSPL dBSPL dB dBSPL dBSPL dB I dBSPL dBSPL dB ----- ------ ----- ----- ------ ----- ----- ------ ----- ----- ------ ----- ----- ------ ----- 18.0 20.1 2.1 38.5 38.6 0.1 1 59.0 59.4 0.4 j 79.5 79.5 0.0 1 100.0 100.3 0.3 18.5 20.4 1.9 39.0 39.1 0.1 59.5 59.9 0.4 80.0 80.1 0.1 100.5 100.8 0.3 19.0 20.6 1.6 39.5 39.8 0.3 60.0 60.3 0.3 80.5 80.6 0.1 101.0 101.3 0.3 19.5 20.9 1.4 40.0 40.3 0.3 60.5 60.8 0.3 81.0 81.1 0.1 101.5 101.8 0.3 20.0 21.2 1.2 40.5 40.8 0.3 61.0 61.3 0.3 81.5 81.6 0.1 102.0 102.3 0.3 20.5 21.5 1.0 41.0 41.3 0.3 61.5 61.8 0.3 82.0 82.1 0.1 102.5 102.7 0.2 21.0 21.9 0.9 41.5 41.8 0.3 62.0 62.2 0.2 82.5 82.6 0.1 103.0 103.1 0.1 21.5 22.4 0.942.0 42.4 0.4 62.5 62.6 0.1 83.0 83.3 0.3 103.5 103.6 0.1 22.0 22.8 0.8 42.5 42.9 0.4 63.0 63.1 0.1 83.5 83.8 0.3 104.0 104.1 0.1 22.5 23.1 0.6 43.0 43.4 0.4 63.5 63.6 0.1 84.0 84.3 0.3 104.5 104.6 0.1 23.0 23.5 0.5 43.5 43.9 0.4 64.0 64.1 0.1 84.5 84.8 0.3 105.0 105.0 0.0 23.5 24.0 0.5 44.0 44.4 0.4 64.5 64.6 0.1 85.0 85.3 0.3 105.5 105.5 0.0 24.0 24.4 0.4 44.5 44.9 0.4 65.0 65.1 0.1 85.5 85.8 0.3 106.0 106.0 0.0 24.5 24.9 0.4 45.0 45.3 0.3 65.5 65.6 0.1 86.0 86.3 0.3 106.5 106.5 0.0 25.0 25.3 0.3 45.5 45.8 0.3 66.0 66.1 0.1 86.5 86.8 0.3 107.0 107.0 0.0 25.5 25.8 0.3 46.0 46.3 0.3 66.5 66.6 0.1 87.0 87.3 0.3 107.5 107.5 0.0 26.0 26.3 0.3 46.5 46.8 0.3 67.0 67.1 0.1 87.5 87.8 0.3 108.0 108.0 0.0 26.5 26.8 0.3 47.0 47.3 0.3 67.5 67.6 0.1 88.0 88.3 0.3 108.5 108.5 0.0 27.0 27.2 0.2 47.5 47.8 0.3 68.0 68.3 0.3 88.5 88.8 0.3 109.0 109.0 0.0 27.5 2-1.8 0.3 48.0 48.2 0.2 68.5 68.8 0.3 89.0 89.3 0.3 109.5 109.5 0.0 28.0 28.3 0.3 48.5 48.6 0.1 69.0 69.3 0.3 89.5 89.6 0.1 110.0 110.1 0.1 28.5 28.8 0.3 49.0 49.1 0.1 69.5 69.8 0.3 90.0 90.1 0.1 110.5 110.6 0.1 29.0 29.3 0.3 49.5 49.6 0.1 70.0 70.3 0.3 90.5 90.6 0.1 111.0 111.1 0.1 29.5 29.8 0.3 50.0 50.1 0.1 70.5 70.9 0.4 91.0 91.1 0.1 111.5 111.6 0.1 30.0 30.3 0.3 50.5 50.6 0.1 71.0 71.4 0.4 91.5 91.6 0.1 112.0 112.1 0.1 30.5 30.8 0.3 51.0 51.1 0.1 71.5 71.9 0.4 92.0 92.0 0.0 112.5 112.8 0.3 31.0 31.3 0.3 51.5 51.6 0.1 72.0 72.4 0.4 92.5 92.5 0.0 113.0 113.3 0.3 31.5 31.8 0.3 52.0 52.1 0.1 72.5 72.9 0.4 93.0 93.0 0.0 113.5 113.8 0.3 32.0 32.3 0.3 52.5 52.6 0.1 73.0 73.3 0.3 93.5 93.5 0.0 114.0 114.3 0.3 32.5 32.8 0.3 53.0 53.1 0.1 73.5 73.8 0.3 94.0 94.0 0.0 114.5 114.8 0.3 33.0 33.3 0.3 53.5 53.6 0.1 74.0 74.3 0.3 94.5 94.5 0.0 115.0 115.3 0.3 33.5 33.6 0.1 54.0 54.3 0.3 74.5 74.8 0.3 95.0 95.0 0.0 115.5 115.8 0.3 34.0 34.1 0.1 54.5 54.8 0.3 75.0 75.3 0.3 95.5 95.6 0.1 116.0 116.3 0.3 34.5 34.6 0.1 55.0 55.3 0.3 75.5 75.8 0.3 96.0 96.1 0.1 116.5 116.8 0.3 35.0 35.1 0.1 55.5 55.8 0.3 76.0 76.1 0.1 96.5 96.6 0.1 117.0 117.3 0.3 35.5 35.6 0.1 56.0 56.4 0.4 76.5 76.6 0.1 97.0 97.1 0.1 117.5 117.6 0.1 36.0 36.1 0.1 56.5 56.9 0.4 77.0 77.1 0.1 97.5 97.6 0.1 118.0 118.1 0.1 36.5 36.6 0.1 57.0 57.4 0.4 77.5 77.6 0.1 98.0 98.2 0.2 118.5 118.6 0.1 37.0 37.1 0.1 57.5 57.9 0.4 78.0 78.1 0.1 98.5 98.8 0.3 119.0 119.1 0.1 37.5 37.6 0.1 58.0 58.4 0.4 78.5 78.5 0.0 99.0 99.3 0.3 119.5 119.6 0.1 38.0 38.1 0.1 58.5 58.9 0.4 79.0 79.0 0.0 99.5 99.8 0.3 120.0 120.1 0.1 Plotted per typical sensitivity of a 2541 microphone; 44.5 mV/Pa & 17.1 pF. Overload occurs at 129.1 dBSPL. Primary indicator range: 106.5 dB (lower limit: 22.5 dBSPL to upper limit: 129.0 dBSPL). Dynamic range: 112.1 dB (noise floor: 16.9 dBSPL to upper limit: 129.0 dBSPL). 130 140 Levl Meas Err dBSPL dBSPL dB ---- 120.5 120.6 0.1 121.0 121.1 0.1 121.5 121.6 0.1 122.0 122.1 0.1 122.5 122.6 0.1 123.0 123.1 0.1 123.5 123.6 0.1 124.0 124.1 0.1 124.5 124.7 0.2 125.0 125.2 0.2 125.5 125.8 0.3 126.0 126.3 0.3 126.5 126.8 0.3 127.0 127.3 0.3 127.5 127.8 0.3 128.0 128.4 0.4 128.5 128.8 0.3 129.0 129.3 0.3 129.5 129.8 0.3 130.0 130.3 0.3 130.5 130.7 0.2 131.0 131.0 0.0 131.5 131.4 -0.1 132.0 131.6 -0.4 132.5 132.0 -0.5 133.0 132.1 -0.9 133.5 132.4 -1.1 134.0 132.5 -1.5 134.5 132.6 -1.9 135.0 132.6 -2.4 135.5 132.6 -2.9 136.0 132.6 -3.4 136.5 132.5 -4.0 137.0 132.5 -4.5 137.5 132.6 -4.9 138.0 132.6 -5.4 This instrument is in compliance with IEC 60651 (2001-10) 7.9 and 7.10, ANSI S1.4-1983 3.2 and IEC 60804 (2001-10) 9.2.1 for Type 1 sound level meters when used with a Larson Davis Type 1 microphone. Technician: Sean Childs Test Date: 28AUG2017