Home

Optimus Sound Level Meter User Manual

Contents

1. 7 Optimus Sound Level Meters User Manual Part Technical Information 8 Optimus Sound Level Meters User Manual Part Technical Information Section 5 5 1 14 Description of stop and reset functions These functions control the measurement of LxyMax LxyMin Lxeq t and LxPeak Start is the left hand softkey while the instrument is not yet running a measurement Stop is available while a measurement is in progress If Pause Mode is enabled via the Advanced Menu hold the right hand softkey for four seconds then release it or press it briefly to enter Pause Mode then press it again to stop The Stop function stores the measurement suspends accumulation of data then clears the latching overload indicator Reset is available from the Main Menu while a measurement is in progress press the centre Menu softkey then select the upper left hand Reset icon The Reset function clears all accumulated data and clears the latching overload indicator Note that the term Hold means the storage and display of the highest or lowest value of a given data type during a measurement period LMax and LPeak hold the highest value LMin holds the lowest 5 1 15 Electrical testing method Electrical testing is done by removing the microphone capsule by unscrewing it from the top of the preamplifier and replacing it with a standard 1 2 60UNS threaded dummy microphone of series capacitance 18 pF 2 p
2. 1 Optimus Sound Level Meters User Manual Part Technical Information Optimus Sound Level Meters User Manual Part B Technical Information Cirrus Research plc This manual the software to which it relates the program code and drawings are all Copyright Cirrus Research plc 1989 2012 2 Optimus Sound Level Meters User Manual Part Technical Information The content of this manual any illustrations technical information and descriptions within this document were correct at the time of going to print Cirrus Research plc reserves the right to make any changes necessary without notice in line with the policy of continuing product development and improvement No part of this publication may be duplicated reprinted stored in a data processing system or transmitted by electronic mechanical photographic or other means or recorded translated edited abridged or expanded without the prior written consent of Cirrus Research plc No liability is accepted for any inaccuracies or omissions in this manual although due care has been taken to ensure that is it complete and accurate as possible Accessories supplied by Cirrus Research plc have been designed for use with the instrumentation manufactured by Cirrus Research plc No responsibility is accepted for damage caused by the use of any other parts or accessories In order to take account of a policy of continual development Cirrus Research plc reserves the
3. 12 5kHz applies to Class 1 Optimus models only Note that the upper limits on the linearity range are affected by the calibration offset Optimus instruments are factory adjusted to a zero calibration offset and will have the upper limits shown above If a different microphone capsule is fitted or the microphone sensitivity changes resulting in a negative calibration offset the upper limits will be reduced by the value of the offset For example a calibration offset of 2 0 dB will result in an upper limit of 138 dB at 1 kHz 21 Optimus Sound Level Meters User Manual Part Technical Information 9 3f Linear measurement starting level For testing of level linearity according to IEC 61672 2 and IEC 61672 3 the starting point is not critical and can be selected within reasonable bounds at the convenience of the testing laboratory Two options are presented in the table below Option 1 uses the same electrical signal input level at each test frequency Option 2 uses the same displayed output A weighted level at each test frequency Decibel values in the table below represent the A weighted Sound Level or Integrated Level shown on the Optimus display at each starting level Frequency Option 1 Option 2 31 5 Hz 54 6 dB 94 0 dB 1 kHz 94 0 dB 94 0 dB 4 kHz 95 0 dB 94 0 dB 8 kHz 92 9 dB 94 0 dB 12 5 kHz 89 7 dB 94 0 dB Note that decibel levels in Option 1 are stated to a tolerance of 0 5 dB when a
4. 5 5 16 56 7 8 5 0 0 2 5 4 5 5 5 20 50 5 6 2 0 0 2 5 3 5 25 44 7 4 4 0 0 2 5 2 0 3 5 31 5 39 4 3 0 0 0 2 0 3 5 40 34 6 2 0 0 0 1 5 2 5 50 30 2 1 3 0 0 1 5 2 5 63 26 2 0 8 0 0 1 5 2 5 80 22 5 0 5 0 0 1 5 2 5 100 19 1 0 3 0 0 1 5 2 0 125 16 1 0 2 0 0 1 5 2 0 160 13 4 0 1 0 0 1 5 2 0 200 10 9 0 0 0 0 1 5 2 0 250 8 6 0 0 0 0 1 4 1 9 315 6 6 0 0 0 0 1 4 1 9 400 4 8 0 0 0 0 1 4 1 9 500 3 2 0 0 0 0 1 4 1 9 630 1 9 0 0 0 0 1 4 1 9 800 0 8 0 0 0 0 1 4 1 9 1000 0 0 0 1 1 1 4 1250 0 6 0 0 0 0 1 4 1 9 1600 1 0 0 1 0 0 1 6 2 6 2000 1 2 0 2 0 0 1 6 2 6 2500 1 3 0 3 0 0 1 6 3 1 3150 1 2 0 5 0 0 1 6 3 1 4000 1 0 0 8 0 0 1 6 3 6 5000 0 5 1 3 0 0 2 1 4 1 6300 0 1 2 0 0 0 2 1 2 6 5 1 8000 1 1 3 0 0 0 2 1 3 1 5 6 10000 2 5 4 4 0 0 2 6 3 6 5 6 12500 43 6 2 0 0 3 0 6 0 6 0 16000 6 6 8 5 0 0 3 5 17 0 6 0 20000 9 3 11 2 0 0 4 0 6 0 16 Optimus Sound Level Meters User Manual Part Technical Information 9 2 2 4 Time Weightings Fast Slow Impulse Time 0 125s 1 35 ms constant 9 2 2 i Peak measurement ranges The Optimus measures LAPeak LCPeak and LZPeak LCPeak is mandated by the standard IEC 61672 1 2002 and its range is shown in bold in the table below Frequency A weighting C weighting Z weighting 31 5 Hz 40 140 dB 50 140 dB 55 140 dB 1 kHz 40
5. 0 83 0 83 0 77 0 63 0 37 0 11 0 15 0 43 0 67 0 78 0 94 1 36 1 63 1 70 1 85 1 84 1 38 0 82 0 65 0 19 0 54 0 75 0 58 0 56 0 68 0 61 210 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 03 0 03 0 04 0 06 0 09 0 13 0 14 0 15 0 16 0 17 0 18 0 20 0 23 0 26 0 29 0 34 0 38 0 43 0 43 0 44 0 44 0 46 0 50 0 50 0 33 0 14 0 02 0 16 0 30 0 44 0 57 0 68 0 76 0 88 0 98 1 00 0 91 0 75 0 52 0 25 0 05 0 31 0 51 0 75 0 44 0 04 0 34 0 84 0 65 0 07 0 40 0 92 1 37 1 08 0 85 1 00 0 13 0 22 220 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 04 0 05 0 06 0 08 0 11 0 15 0 16 0 16 0 17 0 17 0 18 0 19 0 19 0 20 0 21 0 21 0 20 0 17 0 11 0 04 0 04 0 12 0 21 0 34 0 47 0 56 0 61 0 64 0 64 0 61 0 52 0 34 0 07 0 26 0 56 0 71 0 46 0 17 0 04 0 15 0 05 0 22 0 50 0 90 0 91 0 47 0 03 0 63 0 58 0 26 0 34 0 40 0 43 0 23 0 01 0 33 0 86 0 51 230 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 04 0 05 0 06 0 08 0 09 0 08 0 07 0 06 0 04 0 03 0 01 0 01 0 04 0 07 0 10 0 14 0 20 0 26 0 30 0 34 0 36 0 36 0 33 0 16 0 10 0 25 0 33 0 36 0 35 0 30 0 23 0 15 0 12 0 17 0 37 0 71 0 77 0 44 0 07 0 53 0 67 0 46 0 19 0 11 0 41 0 57 0 52 0 22 0 15 0 59 0 56 0 26 0 19 0 13 0 16 0 03 0 15 0 15 240 0
6. 0 00 0 03 0 04 0 04 0 04 0 04 0 05 0 06 0 06 0 07 0 07 0 07 0 08 0 08 0 09 0 09 0 10 0 12 0 14 0 16 0 16 0 16 0 15 0 13 0 10 0 10 0 16 0 21 0 24 0 26 0 27 0 28 0 30 0 35 0 42 0 46 0 49 0 53 0 62 0 72 0 80 0 84 0 93 1 09 1 26 1 47 1 56 1 51 1 61 1 75 1 84 1 62 1 56 1 67 1 66 1 58 1 44 1 42 1 10 0 94 200 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 03 0 03 0 03 0 04 0 06 0 09 0 10 0 11 0 11 0 12 0 13 0 15 0 16 0 19 0 22 0 26 0 30 0 35 0 37 0 39 0 41 0 44 0 49 0 57 0 61 0 61 0 61 0 60 0 60 0 61 0 64 0 70 0 77 0 81 0 80 0 74 0 59 0 46 0 36 0 22 0 12 0 07 0 04 0 26 0 37 0 45 0 54 0 66 0 63 0 74 0 81 0 66 0 52 0 47 0 42 0 19 0 41 0 22 210 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 03 0 03 0 04 0 05 0 08 0 12 0 13 0 14 0 15 0 17 0 18 0 20 0 22 0 25 0 28 0 32 0 37 0 41 0 42 0 42 0 42 0 43 0 44 0 44 0 34 0 23 0 14 0 06 0 02 0 10 0 17 0 22 0 25 0 30 0 36 0 41 0 46 0 45 0 41 0 40 0 38 0 32 0 25 0 20 0 32 0 45 0 60 0 71 0 63 0 58 0 52 0 35 0 27 0 09 0 46 0 87 1 29 1 09 220 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 03 0 03 0 05 0 07 0 10 0 14 0 15 0 15 0 16 0 17 0 17 0 18 0 19 0 20 0 20 0 20 0 20 0 17 0 12 0 06
7. 0 01 1320 1334 0 03 0 04 0 04 0 06 0 12 0 15 0 15 0 14 0 15 0 10 0 03 0 03 0 02 1400 1413 0 01 0 02 0 02 0 03 0 11 0 15 0 16 0 16 0 16 0 12 0 05 0 04 0 04 1500 1496 0 01 0 00 0 00 0 01 0 09 0 14 0 17 0 18 0 18 0 15 0 07 0 04 0 07 1600 1585 0 02 0 02 0 02 0 02 0 06 0 12 0 18 0 21 0 20 0 18 0 10 0 03 0 09 1700 1679 0 02 0 03 0 04 0 04 0 03 0 09 0 17 0 23 0 23 0 20 0 14 0 01 0 11 1800 1778 0 00 0 01 0 03 0 05 0 01 0 04 0 14 0 24 0 27 0 23 0 18 0 03 0 13 1900 1884 0 04 0 03 0 01 0 04 0 03 0 01 0 09 0 23 0 31 0 26 0 22 0 07 0 14 2000 1995 0 10 0 08 0 05 0 00 0 03 0 06 0 02 0 19 0 34 0 30 0 25 0 13 0 15 2120 2113 0 16 0 14 0 11 0 06 0 01 0 08 0 06 0 09 0 33 0 33 0 25 0 18 0 13 2240 2239 0 20 0 19 0 17 0 14 0 07 0 06 0 11 0 02 0 28 0 36 0 25 0 21 0 09 2360 2371 0 20 0 21 0 21 0 23 0 15 0 00 0 11 0 12 0 18 0 40 0 25 0 24 0 04 2500 2512 0 16 0 19 0 21 0 30 0 25 0 09 0 07 0 19 0 04 0 42 0 29 0 25 0 03 2650 2661 0 05 0 11 0 12 0 32 0 34 0 25 0 05 0 19 0 14 0 37 0 40 0 26 0 13 2800 2818 0 04 0 02 0 00 0 21 0 27 0 39 0 30 0 03 0 23 0 14 0 59 0 29 0 25 3000 2985 0 01 0 02 0 02 0 06 0 09 0 27 0 43 0 21 0 11 0 09 0 57 0 35 0 30 3150 3162 0 06 0 05 0 03 0 00 0 02 0 12 0 34
8. 0 02 0 13 0 27 0 46 0 69 0 96 1 23 1 47 1 65 1 86 1 98 1 99 5300 5309 0 00 0 02 0 15 0 32 0 55 0 80 1 06 1 36 1 64 1 83 2 04 2 21 2 21 5600 5623 0 00 0 01 0 14 0 34 0 62 0 91 1 18 1 49 1 81 2 05 2 26 2 46 2 47 6000 5957 0 00 0 03 0 14 0 33 0 61 0 97 1 27 1 57 1 90 2 20 2 43 266 2 73 6300 6310 0 00 0 05 0 18 0 36 0 62 1 01 1 37 1 68 2 02 2 37 2 63 2 85 2 99 6700 6683 0 00 0 07 0 23 0 45 0 72 1 11 1 51 1 87 2 21 2 59 2 89 3 09 3 30 7100 7079 0 00 0 07 0 24 0 52 0 84 1 23 1 65 2 07 2 43 2 82 3 18 3 36 3 60 7500 7499 0 00 0 07 0 24 0 50 0 90 1 35 1 76 2 25 2 64 3 04 3 45 3 64 3 91 8000 7943 0 00 0 08 0 28 0 53 0 92 1 48 1 91 2 42 2 89 3 30 3 75 3 95 4 22 8500 8414 0 00 0 09 0 33 0 63 1 00 1 59 2 11 2 60 3 15 3 57 4 05 4 28 4 51 9000 8913 0 00 0 07 0 30 0 67 1 13 1 68 2 30 2 81 3 40 3 87 4 35 4 64 4 86 9500 9441 0 00 0 07 0 29 0 62 1 14 1 78 2 36 3 03 3 58 4 16 4 64 5 00 5 22 10000 10000 0 00 0 10 0 38 0 73 1 19 1 96 2 54 3 30 3 86 4 53 5 03 5 44 5 69 10600 10593 0 00 0 09 0 39 0 80 1 34 2 09 2 81 3 52 4 20 4 89 5 43 5 87 6 10 11200 11220 0 00 0 08 0 35 0 75 1 41 2 19 2 97 3 70 4 57 5 19 5 87 6 33 6 58 11800 11885 0 00 0 11 0 44 0 87 1 56 2 46 3 22 4 16 4 95 5 70 6 43 6 86 7 16 12500 12589 0 00 0 12 0 44 0 95 1 69 2 60 3 52 4 48 5 36 6 28 7 06
9. 0 04 0 07 0 02 0 00 5000 5012 0 32 0 35 0 38 0 38 0 31 0 21 0 22 0 22 0 22 5300 5309 0 42 0 52 0 56 0 65 0 59 0 50 0 55 0 52 0 50 5600 5623 0 50 0 72 0 76 0 94 0 93 0 85 0 96 0 89 0 86 6000 5957 0 45 0 69 0 79 1 00 1 07 1 08 1 13 1 11 1 13 6300 6310 0 30 0 51 0 66 0 87 0 99 1 08 1 10 1 10 1 16 6700 6683 0 21 0 36 0 53 0 70 0 86 0 98 1 01 1 03 1 10 7100 7079 0 22 0 29 0 45 0 57 0 72 0 84 0 89 0 91 0 98 7500 7499 0 30 0 27 0 40 0 47 0 58 0 70 0 71 0 74 0 80 8000 7943 0 42 0 36 0 43 0 44 0 50 0 59 0 60 0 55 0 61 8500 8414 0 59 0 58 0 57 0 55 0 57 0 60 0 60 0 47 0 53 9000 8913 0 86 0 87 0 88 0 81 0 81 0 76 0 70 0 53 0 64 9500 9441 1 03 1 02 1 19 1 08 1 13 1 02 0 93 0 81 0 90 10000 10000 1 00 1 10 1 40 1 31 1 45 1 39 1 29 1 24 1 32 10600 10593 0 82 1 13 1 37 1 44 1 66 1 69 1 65 1 60 1 68 11200 11220 0 94 1 19 1 29 1 57 1 84 2 00 2 00 2 00 2 09 11800 11885 0 92 1 00 1 07 1 46 1 59 1 81 1 83 1 73 1 86 12500 12589 1 51 1 54 1 50 1 73 1 82 1 80 1 71 1 65 1 74 13200 13335 1 68 1 71 1 71 1 86 1 85 1 75 1 59 1 52 1 59 14000 14125 1 81 1 96 2 16 2 35 2 19 2 14 2 01 1 92 2 00 15000 14962 1 87 2 18 2 54
10. 0 10 0 03 0 09 0 01 0 05 0 05 0 12 0 23 0 27 0 16 0 18 0 20 0 09 340 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 01 0 01 0 01 0 04 0 06 0 06 0 05 0 04 0 03 0 01 0 02 0 04 0 07 0 08 0 08 0 05 0 00 0 07 0 14 0 18 0 20 0 14 0 03 0 04 0 03 0 01 0 01 0 01 0 00 0 01 0 04 0 06 0 02 0 10 0 11 0 00 0 03 0 00 0 05 0 04 0 05 0 07 0 10 0 08 0 06 0 06 0 09 0 03 0 04 0 01 0 07 0 16 0 16 0 11 0 11 0 08 0 02 Optimus Sound Level Meters User Manual Part Technical Information 350 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 03 0 04 0 05 0 04 0 03 0 02 0 00 0 02 0 05 0 07 0 08 0 07 0 04 0 02 0 08 0 12 0 14 0 09 0 03 0 16 0 11 0 00 0 06 0 09 0 08 0 05 0 01 0 05 0 09 0 02 0 07 0 02 0 04 0 02 0 03 0 05 0 02 0 04 0 09 0 01 0 06 0 01 0 09 0 04 0 05 0 04 0 01 0 01 0 10 0 11 0 04 0 06 0 07 0 06 31 Optimus Sound Level Meters User Manual Part Technical Information Influence of the Optimus case on frequency response plane perpendicular to the display screen vertical 0 to 120 Angle from reference direction Nominal Exact Frequency Frequency 0 10 20 30 40 50 60 70 80 90 100 110 120 Hz Hz 63 63 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 80 79 0 00 0
11. 0 22 0 27 0 32 0 37 0 41 0 44 0 48 2000 1995 0 00 0 02 0 04 0 08 0 13 0 19 0 25 0 30 0 36 0 40 0 45 0 48 0 52 2120 2113 0 00 0 02 0 05 0 08 0 14 0 22 0 28 0 34 0 39 0 44 0 49 0 52 0 56 2240 2239 0 00 0 02 0 04 0 09 0 16 0 24 0 31 0 37 0 43 0 48 0 54 0 57 0 61 2360 2371 0 00 0 01 0 04 0 09 0 17 0 26 0 34 0 41 0 47 0 53 0 58 0 61 0 65 2500 2512 0 00 0 00 0 03 0 08 0 18 0 28 0 37 0 45 0 51 0 57 0 62 0 65 0 70 2650 2661 0 00 0 03 0 02 0 06 0 19 0 30 0 41 0 49 0 55 0 61 0 68 0 69 0 75 2800 2818 0 00 0 04 0 01 0 06 0 21 0 32 0 45 0 54 0 63 0 70 0 79 0 78 0 85 3000 2985 0 00 0 01 0 05 0 11 0 23 0 35 0 48 0 60 0 72 0 82 0 92 0 93 0 98 3150 3162 0 00 0 03 0 08 0 16 0 25 0 37 0 50 0 64 0 79 0 92 1 01 1 06 1 09 3350 3350 0 00 0 05 0 09 0 18 0 27 0 40 0 53 0 67 0 84 0 99 1 09 1 15 1 17 3550 3548 0 00 0 06 0 10 0 20 0 29 0 43 0 56 0 71 0 88 1 05 1 16 1 23 1 25 3750 3758 0 00 0 06 0 11 0 20 0 30 0 46 0 61 0 76 0 92 1 11 1 23 1 31 1 33 4000 3981 0 00 0 05 0 10 0 21 0 32 0 50 0 66 0 81 0 98 1 18 1 31 1 39 1 42 4250 4217 0 00 0 04 0 10 0 21 0 33 0 54 0 73 0 89 1 06 1 26 1 42 1 50 1 52 4500 4467 0 00 0 03 0 10 0 22 0 36 0 57 0 80 1 00 1 16 1 36 1 55 1 63 1 65 4750 4732 0 00 0 02 0 11 0 24 0 40 0 62 0 87 1 11 1 30 1 49 1 70 1 79 1 80 5000 5012 0 00
12. 0 39 0 42 0 45 0 49 0 54 0 58 0 62 0 66 0 68 0 77 0 95 1 11 1 23 1 33 1 41 1 50 1 60 1 73 1 88 2 07 2 27 2 51 2 75 2 99 3 28 3 58 3 88 4 20 4 53 4 95 5 32 5 81 6 30 6 91 7 65 8 33 8 85 9 54 10 32 11 06 11 68 12 58 14 13 14 54 230 0 00 0 00 0 00 0 00 0 00 0 00 0 11 0 12 0 13 0 14 0 15 0 18 0 23 0 25 0 27 0 29 0 31 0 33 0 35 0 37 0 39 0 42 0 46 0 50 0 54 0 59 0 64 0 69 0 75 0 81 0 91 1 04 1 14 1 22 1 30 1 38 1 47 1 57 1 71 1 88 2 07 2 28 2 54 2 77 3 02 3 34 3 66 4 00 4 36 4 71 5 13 5 48 5 92 6 39 6 94 7 58 8 16 8 64 9 27 10 04 10 79 11 54 12 50 14 03 14 34 240 0 00 0 00 0 00 0 00 0 00 0 00 0 14 0 16 0 17 0 17 0 17 0 18 0 24 0 26 0 28 0 30 0 32 0 34 0 36 0 39 0 41 0 44 0 47 0 51 0 56 0 60 0 64 0 68 0 71 0 73 0 80 0 98 1 13 1 24 1 33 1 41 1 49 1 59 1 72 1 89 2 09 2 31 2 57 2 81 3 05 3 35 3 63 3 92 4 23 4 54 4 93 5 28 5 73 6 20 6 76 7 43 8 04 8 51 9 17 9 86 10 46 11 14 12 12 13 88 14 24 Optimus Sound Level Meters User Manual Part B Technical Information 250 0 00 0 00 0 00 0 00 0 00 0 00 0 09 0 11 0 12 0 14 0 16 0 19 0 24 0 26 0 28 0 29 0 31 0 32 0 34 0 36 0 38 0 41 0 45 0 48 0 52 0
13. 1120 1122 0 19 0 24 0 18 0 20 0 18 0 17 0 20 0 15 0 12 1180 1189 0 20 0 26 0 20 0 22 0 20 0 19 0 23 0 17 0 13 1250 1259 0 22 0 27 0 22 0 24 0 22 0 21 0 25 0 19 0 15 1320 1334 0 25 0 29 0 25 0 27 0 25 0 23 0 28 0 20 0 16 1400 1413 0 27 0 31 0 27 0 29 0 27 0 26 0 30 0 22 0 18 1500 1496 0 31 0 34 0 30 0 32 0 29 0 29 0 32 0 25 0 21 1600 1585 0 35 0 37 0 33 0 35 0 32 0 32 0 34 0 28 0 24 1700 1679 0 39 0 41 0 37 0 39 0 36 0 36 0 37 0 31 0 27 1800 1778 0 44 0 45 0 42 0 43 0 40 0 40 0 40 0 35 0 31 1900 1884 0 49 0 50 0 47 0 47 0 45 0 45 0 45 0 39 0 36 2000 1995 0 54 0 55 0 51 0 52 0 50 0 50 0 49 0 43 0 40 2120 2113 0 59 0 59 0 56 0 57 0 54 0 55 0 54 0 48 0 44 2240 2239 0 64 0 64 0 61 0 61 0 59 0 59 0 57 0 52 0 49 2360 2371 0 68 0 68 0 66 0 64 0 64 0 63 0 60 0 56 0 54 2500 2512 0 74 0 72 0 72 0 66 0 69 0 67 0 60 0 61 0 61 2650 2661 0 79 0 74 0 77 0 66 0 75 0 69 0 58 0 67 0 71 2800 2818 0 75 0 68 0 75 0 62 0 75 0 69 0 54 0 68 0 77 3000 2985 0 55 0 55 0 61 0 56 0 64 0 65 0 57 0 62 0 64 3150 3162 0 40 0 47 0 49 0 54 0 54 0 61 0 62 0 55 0 49 3350 3350 0 31 0 43 0 42 0 52 0 48 0 57 0 65 0 51 0 40 3550 3548 0 24 0 39 0 36 0 49 0 43 0 54 0 66 0 47 0 34 3750 3758 0 19 0 35 0 31 0 45 0 39 0 49 0 64 0 44 0 30 4000 3981 0 13 0 28 0 24 0 37 0 34 0 43 0 57 0 39 0 27 4250 4217 0 04 0 16 0 13 0 25 0 25 0 34 0 45 0 31 0 22 4500 4467 0 07 0 01 0 01 0 08 0 12 0 21 0 29 0 19 0 13 4750 4732 0 19 0 16 0 18 0 12 0 06
14. 21 5 6 3 See section 9 3h Page 21 5 6 4 See section 9 3h 21 5 6 5 No special procedures are required for measuring noise levels close to the noise floor 5 7 1 See User manual for the optimus sound level meters page 31 and Section 9 2 24 16 5 10 1 See User manual for the optimus sound level meters page 19 5 11 1 See section 5 11 1 Page 8 5 12 1 See section 9 2 2 i Page 16 5 13 1 See User manual for the optimus sound level meters page 26 5 14 1 See section 5 14 1 9 5 15 2 See User manual for the optimus sound level meters page 18 5 15 3 See User manual for the optimus sound level meters Page18 5 15 4 See User manual for the optimus sound level meters page 18 5 15 5 See section 5 15 5 9 5 15 6 See section 5 15 6 9 5 15 7 See User manual for the optimus sound level meters page 16 5 15 8 The optimus sound level meters use no alternative display devices 5 16 1 See section 5 16 1 Page 9 5 17 1 See User manual for the optimus sound level meters page 28 5 17 1 See section 5 17 1 Note 2 Page 10 Note 2 5 17 2 See section 5 17 2 10 5 18 1 See section 5 18 1 Page 10 5 18 2 See section 9 3n Page 22 5 20 2 See section 9 3j Page 22 5 20 3 See User manual for the optimus sound level meters page 31 5 20 4 See User manual for the optimus sound level meters page 17 IEC 61672 1 2002 Section 6 Section Reference
15. 5300 5309 0 33 0 33 0 29 0 25 0 17 0 20 0 14 0 06 0 17 0 16 5600 5623 0 19 0 20 0 17 0 17 0 09 0 09 0 06 0 02 0 29 0 20 6000 5957 0 01 0 02 0 02 0 04 0 01 0 04 0 03 0 01 0 20 0 26 6300 6310 0 01 0 01 0 01 0 00 0 02 0 04 0 00 0 00 0 03 0 21 6700 6683 0 01 0 01 0 01 0 03 0 08 0 03 0 02 0 05 0 06 0 17 7100 7079 0 03 0 03 0 01 0 05 0 15 0 13 0 12 0 15 0 01 0 21 7500 7499 0 06 0 06 0 03 0 01 0 16 0 19 0 23 0 27 0 17 0 29 8000 7943 0 04 0 04 0 03 0 03 0 11 0 18 0 29 0 36 0 37 0 37 8500 8414 0 07 0 07 0 03 0 00 0 10 0 15 0 31 0 42 0 55 0 49 9000 8913 0 01 0 02 0 01 0 00 0 12 0 10 0 28 0 42 0 59 0 64 9500 9441 0 19 0 16 0 14 0 08 0 16 0 15 0 20 0 38 0 45 0 79 10000 10000 0 08 0 07 0 15 0 21 0 28 0 25 0 23 0 34 0 40 0 85 10600 10593 0 10 0 07 0 12 0 16 0 34 0 27 0 34 0 31 0 42 0 64 11200 11220 0 22 0 22 0 29 0 30 0 44 0 54 0 57 0 62 0 64 0 59 11800 11885 0 23 0 23 0 29 0 29 0 39 0 41 0 60 0 76 0 76 0 80 12500 12589 0 71 0 70 0 73 0 70 0 79 0 76 0 90 1 07 1 27 1 48 13200 13335 0 64 0 63 0 70 0 71 0 85 0 78 0 83 0 98 1 22 1 45 14000 14125 0 73 0 69 0 71 0 73 0 97 0 95 1 01 1 06 1 21 1 35 15000 14962 0 79 0 76 0 81 0 81 1 00 1 07 1 18 1 22 1 29 1 44 16000 15849 0 90 0 88 0 88 0 85 1 07 1 09 1 21 1 37 1 53 1 6
16. 0 02 0 02 0 02 0 02 0 01 0 01 0 01 0 01 0 00 0 04 0 01 400 398 0 01 0 03 0 02 0 02 0 02 0 02 0 02 0 02 0 01 0 02 0 00 0 04 0 01 500 501 0 01 0 02 0 02 0 02 0 02 0 02 0 02 0 02 0 02 0 02 0 01 0 04 0 02 630 631 0 01 0 01 0 01 0 01 0 01 0 02 0 02 0 03 0 03 0 03 0 01 0 04 0 04 800 794 0 01 0 01 0 01 0 01 0 01 0 00 0 00 0 02 0 03 0 04 0 03 0 02 0 04 1000 1000 0 03 0 03 0 03 0 03 0 04 0 03 0 03 0 01 0 01 0 04 0 06 0 02 0 00 1060 1059 0 03 0 03 0 03 0 04 0 04 0 04 0 04 0 02 0 01 0 03 0 07 0 03 0 01 1120 1122 0 02 0 02 0 02 0 03 0 04 0 05 0 05 0 03 0 03 0 02 0 07 0 04 0 03 1180 1189 0 01 0 01 0 01 0 03 0 04 0 05 0 06 0 04 0 04 0 01 0 06 0 04 0 05 1250 1259 0 00 0 01 0 00 0 02 0 04 0 06 0 06 0 05 0 06 0 01 0 05 0 05 0 08 1320 1334 0 02 0 03 0 02 0 00 0 03 0 06 0 07 0 06 0 07 0 02 0 04 0 06 0 10 1400 1413 0 05 0 05 0 05 0 02 0 01 0 05 0 07 0 07 0 08 0 04 0 03 0 06 0 12 1500 1496 0 07 0 07 0 08 0 05 0 01 0 04 0 08 0 09 0 09 0 06 0 00 0 06 0 15 1600 1585 0 09 0 10 0 10 0 08 0 05 0 02 0 07 0 10 0 11 0 07 0 02 0 05 0 16 1700 1679 0 10 0 10 0 12 0 11 0 08 0 02 0 06 0 11 0 13 0 09 0 05 0 03 0 18 1800 1778 0 09 0 09 0 12 0 12 0 12 0 07 0 02 0 11 0 15 0 11 0 08 0 00 0 19 1900 1884 0 05 0 06 0 09 0 11 0 14 0 12 0 04 0 08 0 18 0 13 0 10 0 04 0 19 2000 1995 0
17. 00 0 00 0 00 200 198 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 250 251 0 03 0 03 0 04 0 03 0 01 0 01 0 01 0 01 0 00 0 01 315 316 0 04 0 03 0 04 0 03 0 01 0 01 0 01 0 01 0 01 0 01 400 398 0 03 0 03 0 03 0 02 0 01 0 01 0 01 0 01 0 01 0 01 500 501 0 03 0 01 0 02 0 02 0 01 0 01 0 01 0 00 0 00 0 02 630 631 0 02 0 00 0 01 0 02 0 01 0 02 0 02 0 01 0 02 0 03 800 794 0 00 0 02 0 01 0 04 0 03 0 04 0 04 0 04 0 05 0 05 1000 1000 0 01 0 00 0 04 0 08 0 07 0 07 0 07 0 07 0 07 0 06 1060 1059 0 01 0 02 0 06 0 09 0 08 0 08 0 08 0 07 0 07 0 06 1120 1122 0 00 0 04 0 08 0 11 0 09 0 09 0 08 0 07 0 07 0 06 1180 1189 0 02 0 06 0 09 0 12 0 10 0 09 0 08 0 06 0 05 0 05 1250 1259 0 04 0 09 0 11 0 13 0 11 0 09 0 08 0 04 0 04 0 03 1320 1334 0 06 0 11 0 13 0 14 0 11 0 09 0 06 0 03 0 02 0 01 1400 1413 0 08 0 13 0 14 0 15 0 12 0 08 0 05 0 00 0 01 0 04 1500 1496 0 11 0 15 0 16 0 16 0 12 0 06 0 02 0 02 0 03 0 04 1600 1585 0 14 0 17 0 17 0 17 0 10 0 03 0 01 0 05 0 05 0 06 1700 1679 0 18 0 19 0 19 0 17 0 07 0 01 0 05 0 07 0 06 0 06 1800 1778 0 21 0 21 0 21 0 16 0 03 0 06 0 07 0 07 0 05 0 05 1900 1884 0 24 0 24 0 22 0 11 0 04 0 10 0 08 0 06 0 02 0 02 2000 1995 0 26 0 27 0 22 0 04 0 10 0 11 0 06 0 01 0 03 0 03 2120 2113 0 26 0 28 0 16 0 05 0 44 0 08 0 01 0 05 0 09 0 09 2
18. 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 100 99 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 125 125 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 160 158 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 200 198 0 00 0 00 0 00 0 00 0 00 0 00 0 00 000 0 00 0 00 0 00 0 00 0 00 250 251 0 01 0 00 0 01 0 00 0 01 0 02 0 02 0 03 0 03 0 04 0 05 0 05 0 04 315 316 0 01 0 00 0 01 0 01 0 02 0 02 0 02 0 03 0 04 0 04 0 05 0 05 0 04 400 398 0 01 0 00 0 01 0 01 0 02 0 02 0 02 0 03 0 04 0 04 0 05 0 05 0 05 500 501 0 02 0 01 0 02 0 00 0 02 0 03 0 02 0 03 0 04 0 03 0 05 0 05 0 06 630 631 0 03 0 03 0 03 0 02 0 03 0 03 0 03 0 03 0 03 0 03 0 04 0 06 0 08 800 794 0 06 0 06 0 06 0 06 0 06 0 05 0 05 0 03 0 03 0 02 0 03 0 06 0 10 1000 1000 0 08 0 08 0 08 0 09 0 10 0 09 0 09 0 07 0 06 0 02 0 01 0 03 0 09 1060 1059 0 08 0 09 0 09 0 10 0 11 0 11 0 10 0 09 0 07 0 03 0 01 0 02 0 07 1120 1122 0 08 0 08 0 08 0 09 0 12 0 12 0 12 0 10 0 09 0 04 0 01 0 00 0 05 1180 1189 0 07 0 07 0 07 0 08 0 13 0 13 0 13 0 11 0 11 0 06 0 01 0 01 0 03 1250 1259 0 05 0 06 0 06 0 07 0 13 0 14 0 14 0 13 0 13 0 08 0 02 0 02
19. 01 0 01 0 04 0 08 0 13 0 16 0 11 0 03 0 20 0 16 0 12 0 08 0 18 2120 2113 0 06 0 05 0 02 0 02 0 09 0 16 0 16 0 06 0 17 0 19 0 12 0 12 0 15 2240 2239 0 11 0 10 0 08 0 05 0 03 0 13 0 19 0 14 0 12 0 23 0 12 0 14 0 10 2360 2371 0 11 0 13 0 12 0 11 0 05 0 07 0 18 0 21 0 03 0 26 0 14 0 14 0 03 2500 2512 0 05 0 10 0 12 0 15 0 13 0 01 0 14 0 25 0 08 0 29 0 20 0 13 0 05 2650 2661 0 08 0 01 0 04 0 13 0 20 0 14 0 07 0 24 0 21 0 26 0 32 0 10 0 15 2800 2818 0 20 0 10 0 41 0 02 0 14 0 27 0 09 0 14 0 25 0 09 0 45 0 10 0 19 3000 2985 0 14 0 10 0 14 0 12 0 03 0 17 0 22 0 01 0 17 0 12 0 34 0 18 0 12 3150 3162 0 04 0 05 0 08 0 11 0 10 0 02 0 20 0 13 0 09 0 20 0 15 0 28 0 05 3350 3350 0 03 0 01 0 03 0 06 0 11 0 08 0 12 0 20 0 02 0 22 0 01 0 35 0 03 3550 3548 0 06 0 01 0 01 0 02 0 09 0 13 0 04 0 20 0 06 0 22 0 09 0 38 0 05 3750 3758 0 05 0 01 0 02 0 02 0 04 0 15 0 05 0 16 0 16 0 21 0 17 0 39 0 09 4000 3981 0 03 0 00 0 01 0 03 0 01 0 13 0 12 0 07 0 24 0 17 0 22 0 35 0 16 4250 4217 0 01 0 01 0 00 0 03 0 06 0 03 0 15 0 04 0 30 0 07 0 25 0 27 0 26 4500 4467 0 02 0 01 0 01 0 03 0 09 0 10 0 07 0 14 0 29 0 14 0 25 0 17 0 42 4750 4732 0 01 0 01 0 01 0 02 0 09 0 19 0 12 0 18 0 19 0 38 0 20 0 07 0 56
20. 19 0 24 0 14 0 29 0 49 0 35 0 18 0 04 0 22 0 14 0 24 0 95 0 62 160 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 05 0 05 0 05 0 05 0 06 0 09 0 10 0 11 0 12 0 14 0 15 0 16 0 18 0 19 0 22 0 25 0 29 0 34 0 36 0 37 0 38 0 37 0 37 0 41 0 53 0 63 0 70 0 75 0 78 0 79 0 80 0 85 0 92 0 96 0 97 0 92 0 86 0 85 0 81 0 70 0 65 0 63 0 51 0 32 0 24 0 13 0 01 0 00 0 17 0 26 0 14 0 02 0 16 0 40 0 59 0 92 0 43 0 42 Angle from reference direction 170 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 02 0 02 0 03 0 04 0 05 0 05 0 05 0 05 0 05 0 05 0 05 0 05 0 06 0 07 0 08 0 09 0 11 0 11 0 11 0 11 0 11 0 12 0 15 0 15 0 14 0 13 0 12 0 12 0 13 0 14 0 19 0 26 0 32 0 37 0 42 0 45 0 51 0 57 0 59 0 65 0 83 1 01 1 12 1 21 1 36 1 56 1 85 2 13 2 31 2 42 2 56 2 67 2 76 3 03 3 39 3 26 2 81 180 0 00 0 00 0 00 0 00 0 00 0 00 0 02 0 02 0 02 0 02 0 03 0 04 0 04 0 04 0 04 0 04 0 04 0 03 0 03 0 03 0 03 0 03 0 03 0 03 0 04 0 04 0 04 0 02 0 01 0 01 0 01 0 02 0 05 0 07 0 09 0 10 0 11 0 12 0 11 0 07 0 10 0 14 0 19 0 22 0 18 0 19 0 26 0 29 0 30 0 34 0 39 0 34 0 37 0 38 0 39 0 23 0 15 0 26 0 32 0 35 0 38 0 39 0 52 0 30 0 30 190 0 00 0 00 0 00 0 00 0 00
21. 2 72 2 64 2 76 2 83 2 70 2 88 16000 15849 1 88 2 09 2 36 2 48 2 82 3 03 3 05 3 05 3 41 17000 16788 1 92 2 02 2 03 2 20 2 70 2 87 2 71 2 62 3 05 18000 17783 2 51 2 47 2 48 2 48 2 81 3 01 2 53 2 32 2 69 19000 18837 2 84 3 04 3 27 3 20 3 49 3 35 2 97 3 00 3 45 20000 19953 2 76 2 93 3 34 3 38 3 73 3 53 3 20 3 45 4 11 36 Optimus Sound Level Meters User Manual Part Technical Information Appendix 2 Influence of mechanical vibrations Mechanical vibrations with an acceleration of 1 m s perpendicular to the plane of the membrane of the microphone at frequencies of 31 5 Hz 63 Hz 125 Hz 250 Hz 500 Hz 630 Hz 800 Hz and 1000 Hz will increase the lower limit of the linear operating range of the A weighting to 75 dB Mechanical vibrations with an acceleration of 1 m s parallel to the plane of the membrane increases the lower limit of the linear working range of the A weighting to 64 dB 37 Optimus Sound Level Meters User Manual Part Technical Information Appendix 3 Instructions for legal applications Only calibrated instruments should be used when measurements are made for legal purposes The Optimus sound level meter has been designed according to the IEC 61672 1 standard and can therefore be approved Information for performing electrical tests The Cirrus Research dummy microphone type KP 66 is recommended The KP 66 has a capacitan
22. 2650 2800 3000 3150 3350 3550 3750 4000 4250 4500 4750 5000 5300 5600 6000 6300 6700 wo 0 14 e 7 1000 1059 1122 1189 1259 1334 1413 1496 1585 1679 1778 1884 1995 2113 2239 2371 2512 2661 2818 2985 3162 3350 3548 3758 3981 4217 4467 4732 5012 5309 5623 5957 6310 6683 e 0 009 00 027 006 02 028 006 000 028 0080 00 J 030 02 00 029 00 2000 029 Page 18 Optimus Sound Level Meters User Manual Part Technical Information 1 L 909 9000 029 9500 10593 16000 15849 051 006 029 17000 16788 amp 029 L 20000 19953 19 Optimus Sound Level Meters User Manual Part Technical Information Expanded combined uncertainty of the corrections 95 coverage k 2 Nominal Exact Pxpanged Nominal Exact Expanded Frequency Frequency one Frequency Frequency combined Hz Hz dB y Hz Hz uncertainty dB 63 63 0 28 3350 3350 0 28 80 79 0 28 3550 3548 0 28 100 99 0 28 3750 3758 0 30 125 125 0 28 4000 3981 0 32 160 158 0 28 4250 4217 0 31 200 198 0 28 4500 4467 0 30 250 251 0 28 4750 4732 0 29 315 316 0 28 5000 5012 0 28 400 398 0 28 5300 5309 0 28 500 501 0 28 5600 562
23. 5000 5012 0 07 0 10 0 03 0 00 0 00 0 15 0 25 0 06 0 02 0 51 0 08 0 04 0 58 5300 5309 0 13 0 18 0 13 0 08 0 03 0 02 0 22 0 15 0 21 0 44 0 15 0 17 0 46 5600 5623 0 00 0 07 0 08 0 11 0 08 0 09 0 02 0 25 0 18 0 16 0 37 0 33 0 29 6000 5957 0 08 0 05 0 04 0 00 0 06 0 05 0 14 0 13 0 10 0 14 0 46 0 31 0 14 6300 6310 0 00 0 01 0 02 0 01 0 03 0 09 0 02 0 01 0 33 0 19 0 49 0 16 0 03 6700 6683 0 09 0 09 0 04 0 01 0 03 0 07 0 13 0 05 0 41 0 11 0 37 0 01 0 13 7100 7079 0 10 0 11 0 06 0 02 0 01 0 03 0 10 0 01 0 26 0 05 0 09 0 16 0 29 7500 7499 0 03 0 06 0 07 0 09 0 02 0 00 0 08 0 11 0 06 0 32 0 14 0 44 0 33 8000 7943 0 08 0 07 0 01 0 08 0 16 0 04 0 08 0 21 0 00 0 56 0 26 0 79 0 28 8500 8414 0 21 0 22 0 12 0 02 0 12 0 13 0 04 0 18 0 07 0 51 0 27 0 88 0 28 9000 8913 0 09 0 14 0 15 0 16 0 00 0 11 0 07 0 06 0 33 0 14 0 12 0 61 0 25 9500 9441 0 05 0 06 0 00 0 06 0 13 0 04 0 15 0 04 0 38 0 14 0 55 0 37 0 10 10000 10000 0 06 0 09 0 03 0 02 0 03 0 05 0 05 0 12 0 23 0 03 0 68 0 03 0 55 10600 10593 0 05 0 02 0 02 0 07 0 02 0 08 0 01 0 17 0 08 0 42 0 57 0 38 0 94 11200 11220 0 03 0 03 0 03 0 01 0 08 0 04 0 18 0 12 0 28 0 60 0 14 0 15 1 23 11800 11885 0
24. 7 52 7 90 13200 13335 0 00 0 16 0 54 1 03 1 83 2 81 3 81 4 79 5 86 6 82 7 61 8 14 8 58 14000 14125 0 00 0 17 0 57 1 18 1 98 3 10 4 10 5 25 6 40 7 35 8 24 8 89 9 39 15000 14962 0 00 0 21 0 66 1 25 2 22 3 32 4 46 5 71 6 87 7 93 8 94 9 72 10 14 16000 15849 0 00 0 23 0 72 1 41 2 38 3 65 4 88 6 10 7 45 8 70 9 81 10 63 10 96 17000 16788 0 00 0 27 0 82 1 56 2 66 3 99 5 27 6 66 8 14 9 50 10 70 11 52 11 86 18000 17783 0 00 0 28 0 89 1 69 2 87 4 37 5 82 7 35 8 80 10 18 11 45 12 34 12 93 19000 18837 0 00 0 38 0 93 1 87 3 17 4 72 6 27 7 95 9 59 11 13 12 52 13 56 14 14 20000 19953 0 00 0 38 0 95 1 90 3 21 4 87 6 46 8 21 9 92 11 51 13 00 14 11 14 74 Page 26 130 to 250 Nominal Frequency Hz 63 80 100 125 160 200 250 315 400 500 630 800 1000 1060 1120 1180 1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550 3750 4000 4250 4500 4750 5000 5300 5600 6000 6300 6700 7100 7500 8000 8500 9000 9500 10000 10600 11200 11800 12500 13200 14000 15000 16000 17000 18000 19000 20000 Exact Frequency Hz 63 79 99 125 158 198 251 316 398 501 631 794 1000 1059 1122 1189 1259 1334 1413 1496 1585 1679 1778 1884 1995 2113 2239 2371 2512 2661 2818 2985 3162 3350 3548 3758 3981 4217 4467 4732 5012 5309 5623 5
25. Comments 6 1 2 See section 9 3 Page 22 6 2 2 See User manual for the optimus sound level meters page 13 and Section 6 2 2 Page 11 6 5 2 See section 6 5 2 11 5 Optimus Sound Level Meters User Manual Part Technical Information 6 6 1 See section 9 30 Page 22 6 6 3 See section 9 30 22 6 6 9 See section 9 30 22 IEC 61672 1 2002 Section 7 Section Reference Comments 7 1 See section 5 18 1 10 7 2 See Appendix 1 Optimus correction The UA 237 90mm diameter data Page 24 windshield is the only relevant accessory 7 4 See User manual for the optimus sound level meters page 32 IEC 61672 1 2002 Section 9 9 2 1a See User manual for the optimus sound level meters page 30 9 2 1b See User manual for the optimus sound level meters page 10 9 2 1 See User manual for the optimus sound level meters page 30 9 2 2 See User manual for the optimus sound level meters page 32 9 2 2b See section 9 2 2b Page 11 9 2 2 See section 9 2 2 15 Z weightings are User manual for the optimus sound provided and are measured level meters page 31 simultaneously 9 2 2d See section 9 2 2d Page 16 and Fast Slow and Impulse are User manual for the optimus sound provided and are measured level meters pag
26. fixed electrical signal level is used 9 3g Electrical insert signals Electrical testing is done by removing the microphone capsule by unscrewing it from the top of the preamplifier and replacing it with a standard 1 2 60UNS threaded dummy microphone of series capacitance 18 pF 2 pF fed from a signal source of impedance 50 Q The Cirrus Research dummy microphone type KP 66 is recommended The KP 66 has a standard BNC input socket and capacitance 18 pF Other types of dummy microphone may be used but please take care that the device has a capacitance of 18 pF 2 pF The input sensitivity is nominally 50 mV Pa i e a signal of 50 mVaws at a suitable frequency produces a sound level reading of 94 dB Note that the exact sensitivity varies depending on the specific microphone capsule with which the instrument has been calibrated All microphone types fitted to the Optimus range share the same electrical substitution method and characteristics 9 3h Self generated noise Highest anticipated self generated noise in a low level sound field with microphone capsule type MK 224 fitted A weighted 18 dB C weighted 25 dB Z weighted 35 dB Highest anticipated self generated noise in a low level sound field with electrical input via 18pF dummy microphone terminated with a 50 Q load between signal pin and body A weighted 15 dB C weighted 24 dB Z weighted 35 dB Note the above decibel values are Leq t measured ov
27. right to change any of the information contained in this publication without prior notice Produced by Cirrus Research plc Acoustic House Bridlington Road Hunmanby North Yorkshire 14 United Kingdom Copyright Cirrus Research plc 2012 Reference Number 03 08 OptimusTechnical 01 Document Printing Date 03 August 2012 3 Optimus Sound Level Meters User Manual Part Technical Information This manual should be used in conjunction with the document titled User Manual for the optimus sound level meters This manual refers to optimus sound level meters fitted with firmware version 2 3 or later The following table lists sections and tables in this manual where information required by specific sections of IEC 61672 1 2002 can be found In certain instances the requested information is not applicable as noted in the Comments column All tabular correction data in this manual is available in electronic spread sheet format on request from Cirrus Research plc See Page 38 for contact details or visit www cirrusresearch co uk library optimus IEC 61672 1 2002 Section 5 Section Reference Comments 5 1 3 See User manual for the optimus sound level meters page 30 5 1 4 See User manual for the optimus sound level meters page 10 5 1 6 See User manual for the optimus sound level meters pages 30 and 10 5 1 7 See User manual for the optimus s
28. 0 00 0 09 0 10 0 10 0 11 0 12 0 14 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 26 0 27 0 29 0 31 0 33 0 36 0 39 0 43 0 47 0 52 0 60 0 71 0 79 0 85 0 90 0 96 1 03 1 11 1 21 1 33 1 48 1 67 1 89 2 08 2 28 2 52 2 78 3 04 3 32 3 61 3 96 4 28 4 72 5 14 5 69 6 30 6 96 7 49 8 16 8 90 9 66 10 43 11 26 12 72 13 17 200 0 00 0 00 0 00 0 00 0 00 0 00 0 10 0 11 0 12 0 12 0 13 0 15 0 19 0 20 0 21 0 23 0 24 0 25 0 27 0 28 0 29 0 31 0 34 0 37 0 40 0 43 0 47 0 51 0 55 0 59 0 68 0 80 0 90 0 97 1 05 1 12 1 19 1 29 1 41 1 54 1 72 1 92 2 17 2 40 2 63 2 91 3 22 3 52 3 85 4 17 4 57 4 94 5 41 5 88 6 46 7 18 7 86 8 39 9 04 9 75 10 47 11 18 11 98 13 43 13 84 210 0 00 0 00 0 00 0 00 0 00 0 00 0 10 0 11 0 12 0 13 0 14 0 16 0 21 0 22 0 24 0 25 0 27 0 28 0 30 0 31 0 33 0 36 0 39 0 42 0 46 0 50 0 54 0 59 0 63 0 69 0 79 0 92 1 02 1 10 1 18 1 26 1 35 1 46 1 60 1 76 1 95 2 17 2 42 2 66 2 90 3 20 3 50 3 81 4 14 4 47 4 89 5 24 5 69 6 17 6 72 7 39 8 01 8 49 9 12 9 84 10 54 11 34 12 24 13 94 14 35 220 0 00 0 00 0 00 0 00 0 00 0 00 0 14 0 16 0 17 0 17 0 16 0 17 0 21 0 23 0 25 0 27 0 29 0 31 0 32 0 34 0 36
29. 0 00 0 02 0 01 0 00 0 02 0 03 0 05 0 07 0 09 0 11 0 12 0 14 0 16 0 19 0 23 0 26 0 29 0 31 0 29 0 18 0 04 0 16 0 16 0 15 0 14 0 12 0 08 0 02 0 20 0 37 0 41 0 26 0 03 0 26 0 27 0 16 0 03 0 31 0 42 0 30 0 12 0 32 0 09 0 12 0 03 0 36 0 09 0 19 0 41 0 43 0 50 0 54 0 72 0 51 0 58 280 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 01 0 00 0 01 0 01 0 02 0 03 0 04 0 06 0 07 0 09 0 10 0 12 0 14 0 17 0 20 0 23 0 25 0 23 0 17 0 06 0 07 0 19 0 21 0 11 0 04 0 01 0 08 0 15 0 22 0 25 0 20 0 07 0 12 0 27 0 18 0 08 0 25 0 27 0 11 0 08 0 13 0 01 0 27 0 18 0 09 0 29 0 14 0 04 0 01 0 05 0 28 0 55 0 46 0 45 0 57 0 51 0 50 Angle from reference direction 290 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 01 0 00 0 00 0 00 0 04 0 06 0 07 0 09 0 0 0 0 0 0 0 0 10 12 13 15 16 17 17 15 0 09 0 00 0 09 0 16 0 20 0 20 0 09 0 09 0 21 0 26 0 24 0 18 0 08 0 04 0 15 0 18 0 06 0 16 0 27 0 11 0 07 0 11 0 00 0 13 0 19 0 14 0 02 0 01 0 05 0 01 0 20 0 15 0 14 0 10 0 25 0 43 0 56 0 44 0 50 0 59 0 59 300 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 02 0 01 0 01 0 02 0 05 0 06 0 07 0 08 0 09 0 10 0 10 0 11 0 11 0 10 0 06 0 00 0 0
30. 0 00 0 02 0 03 0 05 0 05 0 06 0 07 0 10 315 316 0 00 0 02 0 02 0 02 0 01 0 00 0 02 0 03 0 05 0 05 0 07 0 08 0 12 400 398 0 00 0 03 0 02 0 02 0 00 0 01 0 02 0 03 0 05 0 06 0 08 0 09 0 13 500 501 0 00 0 02 0 02 0 02 0 00 0 01 0 03 0 04 0 06 0 07 0 09 0 11 0 13 630 631 0 00 0 02 0 01 0 02 0 02 0 03 0 04 0 06 0 08 0 09 0 11 0 12 0 13 800 794 0 00 0 01 0 01 0 02 0 03 0 05 0 06 0 09 0 11 0 13 0 14 0 15 0 14 1000 1000 0 00 0 01 0 01 0 02 0 04 0 07 0 09 0 12 0 14 0 17 0 19 0 20 0 21 1060 1059 0 00 0 01 0 02 0 03 0 04 0 07 0 10 0 13 0 15 0 18 0 21 0 21 0 24 1120 1122 0 00 0 01 0 02 0 03 0 04 0 07 0 10 0 13 0 16 0 19 0 22 0 22 0 26 1180 1189 0 00 0 01 0 03 0 03 0 04 0 08 0 10 0 14 0 16 0 20 0 23 0 24 0 29 1250 1259 0 00 0 01 0 03 0 04 0 05 0 08 0 11 0 14 0 17 0 21 0 25 0 25 0 31 1320 1334 0 00 0 02 0 03 0 04 0 05 0 09 0 12 0 15 0 19 0 22 0 26 0 27 0 33 1400 1413 0 00 0 02 0 04 0 05 0 05 0 09 0 13 0 16 0 20 0 24 0 28 0 29 0 35 1500 1496 0 00 0 01 0 04 0 05 0 06 0 10 0 14 0 18 0 22 0 26 0 30 0 31 0 37 1600 1585 0 00 0 01 0 04 0 05 0 07 0 12 0 15 0 19 0 24 0 28 0 32 0 33 0 39 1700 1679 0 00 0 01 0 04 0 06 0 09 0 13 0 17 0 22 0 26 0 30 0 35 0 36 0 41 1800 1778 0 00 0 01 0 04 0 06 0 10 0 15 0 20 0 24 0 29 0 33 0 38 0 40 0 44 1900 1884 0 00 0 02 0 04 0 07 0 11 0 17
31. 0 00 0 06 0 13 0 21 0 28 0 33 0 36 0 37 0 37 0 35 0 30 0 21 0 08 0 02 0 03 0 07 0 22 0 28 0 26 0 22 0 12 0 00 0 06 0 20 0 31 0 24 0 26 0 52 0 64 0 33 0 19 0 18 0 09 0 30 0 56 0 56 0 45 0 32 230 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 04 0 04 0 05 0 07 0 09 0 09 0 08 0 07 0 06 0 04 0 02 0 01 0 01 0 04 0 07 0 11 0 15 0 20 0 23 0 25 0 26 0 25 0 20 0 07 0 05 0 08 0 08 0 06 0 04 0 00 0 03 0 03 0 02 0 13 0 29 0 48 0 53 0 53 0 52 0 47 0 37 0 20 0 01 0 27 0 45 0 63 0 84 1 18 0 86 0 28 0 22 0 98 1 54 1 18 0 61 0 09 0 53 0 20 240 0 00 0 00 0 00 0 00 0 00 0 00 0 02 0 01 0 02 0 02 0 04 0 05 0 02 0 01 0 01 0 03 0 05 0 07 0 10 0 12 0 13 0 15 0 16 0 15 0 14 0 09 0 03 0 04 0 14 0 27 0 33 0 19 0 06 0 01 0 02 0 01 0 10 0 24 0 40 0 51 0 47 0 29 0 11 0 08 0 24 0 39 0 49 0 47 0 41 0 41 0 20 0 30 0 40 0 41 0 39 0 07 0 70 0 89 0 81 0 11 1 11 1 70 1 29 0 67 0 47 Optimus Sound Level Meters User Manual Part B Technical Information 250 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 03 0 03 0 03 0 03 0 01 0 03 0 04 0 05 0 06 0 07 0 07 0 07 0 06 0 04 0 02 0 02 0 07 0 12 0 15 0 16 0 15 0 13 0 11 0 18 0 33 0 40 0 40 0 36 0 29 0 19 0 07 0 06 0 14 0 23 0 32 0 36 0 27 0 12 0 06
32. 0 26 0 51 0 61 0 46 0 14 0 36 0 67 0 69 0 34 0 30 0 63 0 25 0 34 0 18 0 64 1 51 1 20 0 14 0 38 30 260 to 350 Nominal Frequency Hz 63 80 100 125 160 200 250 315 400 500 630 800 1000 1060 1120 1180 1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550 3750 4000 4250 4500 4750 5000 5300 5600 6000 6300 6700 7100 7500 8000 8500 9000 9500 10000 10600 11200 11800 12500 13200 14000 15000 16000 17000 18000 19000 20000 Exact Frequency Hz 63 79 99 125 158 198 251 316 398 501 631 794 1000 1059 1122 1189 1259 1334 1413 1496 1585 1679 1778 1884 1995 2113 2239 2371 2512 2661 2818 2985 3162 3350 3548 3758 3981 4217 4467 4732 5012 5309 5623 5957 6310 6683 7079 7499 7943 8913 9441 10000 10593 11220 11885 12589 13335 14125 14962 15849 16788 17783 18837 19953 260 0 00 0 00 0 00 0 00 0 00 0 00 0 02 0 02 0 01 0 01 0 00 0 02 0 03 0 04 0 03 0 03 0 02 0 00 0 02 0 05 0 07 0 10 0 13 0 16 0 18 0 18 0 20 0 23 0 29 0 39 0 43 0 27 0 09 0 04 0 14 0 21 0 26 0 28 0 27 0 18 0 02 0 26 0 44 0 41 0 26 0 04 0 20 0 34 0 35 0 19 0 34 0 47 0 23 0 27 0 77 0 32 0 33 0 40 0 08 0 16 0 76 0 86 0 62 0 67 0 69 270 0 00 0 00 0 00 0 00 0 00 0 00 0 02 0 02 0 02 0 01
33. 0 35 0 03 0 16 0 38 0 40 0 27 3350 3350 0 09 0 07 0 07 0 02 0 01 0 04 0 20 0 38 0 13 0 15 0 17 0 44 0 24 3550 3548 0 09 0 06 0 09 0 01 0 03 0 00 0 09 0 34 0 23 0 12 0 00 0 47 0 20 3750 3758 0 06 0 03 0 07 0 01 0 05 0 02 0 00 0 24 0 32 0 09 0 15 0 46 0 18 4000 3981 0 02 0 00 0 03 0 02 0 08 0 00 0 06 0 10 0 38 0 03 0 25 0 41 0 17 4250 4217 0 02 0 02 0 00 0 04 0 09 0 06 0 07 0 02 0 36 0 08 0 29 0 28 0 23 4500 4467 0 03 0 01 0 02 0 01 0 08 0 14 0 03 0 07 0 24 0 31 0 25 0 08 0 40 4750 4732 0 01 0 02 0 03 0 08 0 13 0 13 0 22 0 05 0 09 0 56 0 15 0 12 0 67 5000 5012 0 10 0 09 0 02 0 03 0 14 0 12 0 22 0 10 0 01 0 51 0 04 0 26 0 87 5300 5309 0 17 0 20 0 14 0 05 0 02 0 15 0 11 0 31 0 11 0 21 0 25 0 24 0 75 5600 5623 0 05 0 12 0 17 0 21 0 02 0 00 0 17 0 15 0 00 0 04 0 64 0 21 0 27 6000 5957 0 07 0 03 0 01 0 09 0 18 0 06 0 10 0 08 0 33 0 09 0 51 0 27 0 16 6300 6310 0 01 0 00 0 02 0 02 0 16 0 14 0 02 0 20 0 28 0 12 0 27 0 11 0 22 6700 6683 0 07 0 09 0 08 0 01 0 07 0 21 0 05 0 17 0 19 0 14 0 21 0 27 0 16 7100 7079 0 06 0 07 0 07 0 05 0 02 0 06 0 21 0 03 0 21 0 31 0 07 0 55 0 24 7500 7499 0 02 0 04 0 08 0 04 0 15 0 03 0 19 0 02 0 28 0 23 0 17 0 56 0 40 8000 79
34. 0 36 0 35 0 33 0 31 0 30 1500 1496 0 42 0 43 0 44 0 43 0 38 0 39 0 38 0 36 0 34 0 34 1600 1585 0 46 0 46 0 46 0 46 0 41 0 43 0 42 0 39 0 37 0 38 1700 1679 0 49 0 50 0 49 0 49 0 45 0 47 0 46 044 0 41 0 42 1800 1778 0 52 0 53 0 53 0 52 0 49 0 50 0 50 048 0 46 0 47 1900 1884 0 56 0 57 0 56 0 55 0 52 0 54 0 54 0 53 0 51 0 51 2000 1995 0 59 0 60 0 59 0 59 0 56 0 57 0 58 0 57 0 55 0 56 2120 2113 0 62 0 63 0 62 0 61 0 59 0 60 0 61 0 61 0 60 0 61 2240 2239 0 64 0 65 0 63 0 62 0 61 0 62 0 63 0 63 0 64 0 65 2360 2371 0 64 0 66 0 63 0 63 0 62 0 64 0 64 0 64 0 67 0 70 2500 2512 0 64 0 66 0 61 0 61 0 63 0 66 0 64 0 63 0 70 0 75 2650 2661 0 58 0 62 0 53 0 53 0 59 0 68 0 62 0 60 0 71 0 81 2800 2818 0 41 0 45 0 35 0 35 0 43 0 59 0 50 0 48 0 61 0 75 3000 2985 0 19 0 22 0 48 0 19 0 23 0 35 0 31 0 31 0 41 0 53 3150 3162 0 09 0 10 0 11 0 13 0 12 0 17 0 21 0 21 0 28 0 35 3350 3350 0 05 0 05 0 09 0 11 0 07 0 06 0 14 0 16 0 20 0 23 3550 3548 0 06 0 05 0 09 0 41 0 05 0 00 0 10 0 12 0 15 0 14 3750 3758 0 09 0 08 0 11 0 12 0 04 0 04 0 06 0 08 0 10 0 06 4000 3981 0 13 0 12 0 14 0 14 0 05 0 05 0 02 0 04 0 06 0 01 4250 4217 0 18 0 18 0 17 0 46 0 06 0 03 0 02 0 00 0 01 0 09 4500 4467 0 25 0 24 0 23 0 21 0 11 0 03 0 04 0 04 0 02 0 17 4750 4732 0 29 0 29 0 27 0 25 0 17 0 13 0 01 0 08 0 05 0 20 5000 5012 0 31 0 31 028 0 26 0 19 0 21 0 08 0 10 0 09 0 19
35. 00 0 00 0 00 0 00 0 00 0 00 0 03 0 02 0 02 0 03 0 04 0 05 0 02 0 00 0 02 0 04 0 06 0 08 0 10 0 11 0 13 0 14 0 14 0 14 0 12 0 07 0 01 0 11 0 24 0 42 0 55 0 45 0 29 0 19 0 15 0 16 0 23 0 38 0 51 0 52 0 19 0 32 0 65 0 48 0 13 0 03 0 11 0 23 0 05 0 31 0 54 0 29 0 09 0 12 0 43 0 27 0 30 0 08 0 43 0 37 0 75 0 46 0 41 0 12 0 18 Optimus Sound Level Meters User Manual Part B Technical Information 250 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 03 0 03 0 03 0 03 0 01 0 03 0 04 0 05 0 06 0 06 0 06 0 05 0 03 0 00 0 03 0 08 0 14 0 21 0 25 0 28 0 29 0 27 0 26 0 35 0 46 0 45 0 36 0 21 0 03 0 19 0 41 0 52 0 38 0 08 0 11 0 05 0 05 0 31 0 47 0 27 0 04 0 04 0 02 0 27 0 29 0 24 0 03 0 09 0 05 0 05 0 05 0 13 0 57 0 58 0 53 0 38 0 07 0 09 33 Optimus Sound Level Meters User Manual Part Technical Information 260 to 350 Angle from reference direction Nominal Exact Frequency Frequency 260 270 280 290 300 310 320 330 340 350 Hz Hz 63 63 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 80 79 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 100 99 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 125 125 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 160 158 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0
36. 000 18837 0 23 0 22 0 33 0 16 0 36 0 41 0 43 0 38 0 47 0 00 0 48 0 69 0 99 20000 19953 0 00 0 01 0 15 0 02 0 18 0 25 0 25 0 21 0 21 0 26 0 05 0 75 0 09 Page 32 130 to 250 Nominal Frequency Hz 63 80 100 125 160 200 250 315 400 500 630 800 1000 1060 1120 1180 1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550 3750 4000 4250 4500 4750 5000 5300 5600 6000 6300 6700 7100 7500 8000 8500 9000 9500 10000 10600 11200 11800 12500 13200 14000 15000 16000 17000 18000 19000 20000 Exact Frequency Hz 63 79 99 125 158 198 251 316 398 501 631 794 1000 1059 1122 1189 1259 1334 1413 1496 1585 1679 1778 1884 1995 2113 2239 2371 2512 2661 2818 2985 3162 3350 3548 3758 3981 4217 4467 4732 5012 5309 5623 5957 6310 6683 7079 7499 7943 8414 8913 9441 10000 10593 11220 11885 12589 13335 14125 14962 15849 16788 17783 18837 19953 130 0 00 0 00 0 00 0 00 0 00 0 00 0 06 0 07 0 08 0 09 0 11 0 13 0 16 0 17 0 17 0 18 0 18 0 17 0 16 0 14 0 12 0 09 0 05 0 00 0 06 0 13 0 19 0 25 0 31 0 36 0 31 0 12 0 04 0 16 0 25 0 29 0 30 0 27 0 24 0 16 0 04 0 02 0 13 0 56 0 90 1 01 0 80 0 48 0 23 0 04 0 03 0 07 0 23 0 82 0 90 0 00 0 18 0 24 0 68 1 04 0 41 0 70 1 51 0 18 0 1
37. 07 0 14 0 13 0 19 0 12 0 17 0 15 0 18 0 38 0 29 0 05 0 54 1 19 12500 12589 0 08 0 12 0 10 0 11 0 10 0 06 0 14 0 19 0 28 0 16 0 34 1 08 0 29 13200 13335 0 02 0 01 0 06 0 02 0 09 0 09 0 09 0 09 0 06 0 03 0 39 0 91 0 54 14000 14125 0 01 0 01 0 06 0 08 0 16 0 21 0 18 0 22 0 16 0 02 0 02 0 07 1 08 15000 14962 0 07 0 02 0 09 0 08 0 20 0 21 0 28 026 0 14 0 17 0 55 0 92 0 97 16000 15849 0 06 0 01 0 10 0 12 0 24 0 33 0 31 0 31 0 25 0 43 0 74 1 14 0 48 17000 16788 0 03 0 04 0 15 0 16 0 31 0 31 0 32 0 39 0 43 0 57 0 46 0 63 0 53 18000 17783 0 01 0 04 0 16 0 14 0 30 0 35 0 36 0 37 0 23 0 22 0 21 1 06 1 83 19000 18837 0 13 0 02 0 06 0 12 0 29 0 26 0 26 0 28 0 22 0 45 0 52 0 82 1 42 20000 19953 0 04 0 22 0 27 0 29 0 49 0 47 0 41 0 43 0 33 0 60 0 73 1 14 1 90 Page 29 130 to 250 Nominal Frequency Hz 63 80 100 125 160 200 250 315 400 500 630 800 1000 1060 1120 1180 1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550 3750 4000 4250 4500 4750 5000 5300 5600 6000 6300 6700 7100 7500 8000 8500 9000 9500 10000 10600 11200 11800 12500 13200 14000 15000 16000 17000 18000 19000 20000 Exact Frequency Hz 63 79 99 125 158 198 251 316 398 501 631 794 1000 1059 1122 1189 1259 1334 1413 1496 1585 1679 1778 1884
38. 10 0 10 0 11 0 11 0 12 0 13 0 15 0 16 0 16 0 16 0 14 0 13 0 12 0 14 0 16 0 16 0 15 0 14 0 12 0 10 0 09 0 11 0 17 0 20 0 23 0 29 0 32 0 34 0 37 0 36 0 41 0 54 0 66 0 70 0 69 0 75 0 90 1 25 1 65 1 78 1 91 2 18 2 39 2 57 2 79 3 39 5 90 6 33 180 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 05 0 05 0 05 0 05 0 06 0 07 0 07 0 07 0 07 0 07 0 07 0 07 0 07 0 07 0 07 0 07 0 08 0 09 0 08 0 08 0 06 0 02 0 02 0 03 0 00 0 02 0 02 0 01 0 01 0 04 0 07 0 08 0 06 0 10 0 14 0 16 0 15 0 11 0 13 0 20 0 22 0 22 0 27 0 28 0 24 0 28 0 30 0 28 0 07 0 09 0 06 0 08 0 00 0 04 0 00 0 20 0 74 0 55 190 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 03 0 03 0 04 0 05 0 06 0 08 0 08 0 08 0 09 0 09 0 09 0 09 0 10 0 10 0 12 0 13 0 15 0 18 0 19 0 19 0 19 0 20 0 22 0 27 0 30 0 29 0 28 0 28 0 29 0 30 0 34 0 42 0 52 0 60 0 67 0 77 0 88 1 01 1 13 1 21 1 33 1 50 1 73 2 11 2 21 2 08 2 27 2 61 2 90 2 62 2 39 2 44 2 32 1 79 1 31 1 26 0 48 0 47 200 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 04 0 05 0 05 0 06 0 08 0 11 0 12 0 13 0 14 0 14 0 16 0 17 0 19 0 21 0 24 0 28 0 33 0 38 0 41 0 43 0 45 0 48 0 54 0 64 0 72 0 75 0 75 0 75 0 75 0 75 0 75 0 78
39. 10 56 11 45 12 68 13 97 14 42 160 0 00 0 00 0 00 0 00 0 00 0 00 0 08 0 07 0 08 0 08 0 10 0 13 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 24 0 25 0 28 0 30 0 33 0 36 0 39 0 43 0 47 0 51 0 56 0 65 0 76 0 83 0 89 0 93 0 99 1 06 1 15 1 27 1 42 1 60 1 80 2 04 2 23 2 41 2 67 2 95 3 23 3 54 3 86 4 21 4 55 5 02 5 48 5 95 6 48 7 16 7 76 8 53 9 32 10 14 11 05 12 33 13 53 13 97 Angle from reference direction 170 0 00 0 00 0 00 0 00 0 00 0 00 0 09 0 09 0 09 0 10 0 11 0 13 0 17 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 25 0 27 0 29 0 31 0 33 0 36 0 39 0 42 0 45 0 49 0 58 0 68 0 74 0 79 0 84 0 89 0 94 1 01 1 11 1 22 1 36 1 53 1 75 1 94 2 12 2 35 2 60 2 84 3 11 3 40 3 70 3 98 4 38 4 78 5 27 5 72 6 28 6 79 7 44 8 13 8 81 9 57 10 59 12 03 12 44 180 0 00 0 00 0 00 0 00 0 00 0 00 0 09 0 10 0 10 0 11 0 11 0 12 0 15 0 16 0 18 0 19 0 20 0 21 0 22 0 23 0 23 0 24 0 26 0 29 0 33 0 36 0 38 0 40 0 43 0 48 0 58 0 68 0 75 0 80 0 86 0 91 0 96 1 02 1 12 1 23 1 36 1 55 1 74 1 97 2 14 2 37 2 60 2 84 3 08 3 35 3 69 4 02 4 38 4 72 5 19 5 78 6 33 6 76 7 37 8 08 8 75 9 44 10 19 11 61 11 88 190 0 00 0 00 0 00 0 00 0 00
40. 13335 7 19 6 54 5 64 4 48 3 52 2 48 1 62 0 94 0 44 0 09 14000 14125 7 80 6 92 6 00 4 86 3 76 2 66 1 75 1 04 0 45 0 10 15000 14962 8 50 7 54 6 39 5 19 4 10 2 85 1 91 1 10 0 52 0 14 16000 15849 8 97 8 12 6 86 5 52 4 30 3 04 1 98 1 17 0 51 0 11 17000 16788 9 47 8 59 7 38 5 95 4 64 3 23 2 16 1 26 0 57 0 15 18000 17783 10 34 9 25 7 94 6 42 5 10 3 60 2 37 1 39 0 64 0 17 19000 18837 11 83 10 68 9 15 7 44 5 88 4 14 2 77 1 70 0 84 0 27 20000 19953 12 09 10 93 9 36 7 57 5 98 4 14 2 69 1 62 0 68 0 05 28 Optimus Sound Level Meters User Manual Part Technical Information Influence of the Optimus case on frequency response plane parallel to the display screen Horizontal 0 to 120 Angle from reference direction Nominal Exact Frequency Frequency 0 10 20 30 40 50 60 70 80 90 100 140 120 63 63 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 80 79 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 100 99 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 125 125 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 160 158 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 200 198 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 250 251 0 02 0 02 0 02 0 02 0 02 0 02 0 01 0 01 0 01 0 01 0 00 0 03 0 00 315 316 0 01 0 03
41. 140 dB 50 143 dB 55 140 dB 4 kHz 40 140 dB 50 143 dB 55 140 dB 8 kHz 40 140 dB 50 140 dB 55 140 dB 12 5 kHz 40 140 dB 50 137 dB 55 140 dB Note that the upper limits of the A C and Z weighted Peak ranges are 3 dB above the corresponding Sound Level range upper limits as described in section 9 3e below Page 20 The note in that section regarding the effect of calibration offset also applies to the upper limit of the Peak ranges Page 17 Optimus Sound Level Meters User Manual Part Technical Information 9 2 4 4 Frequency Response Corrections The values in the table below should be subtracted from the measurement reading to correct for the corresponding effect at the reference direction 0 angle of incidence for plane progressive sound waves See Appendix 1 Optimus correction data page 24 for detailed correction tables at other angles of incidence Nominal Exact Typical MK 224 Free field influence Free field influence of Expanded Whicertsihtias at Frequency Frequency free field response of optimus case at Windshield UA 237 at 0 um coverage 2 dB Hz 0 dB dB S s 00 028 A 000 02 oo 02 02 6000 000 03 10 125 160 200 250 315 4 0 03 N B N e co oa e 6 8 1000 1060 1120 1180 1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500
42. 18 0 06 0 02 0 02 0 05 0 08 0 06 0 02 0 00 7500 7499 0 18 0 19 0 12 0 09 0 05 0 03 0 05 0 04 0 05 0 08 8000 7943 0 04 0 11 0 04 0 04 0 01 0 03 0 01 0 05 0 08 0 08 8500 8414 0 20 0 03 0 08 0 02 0 02 0 04 0 01 0 07 0 00 0 04 9000 8913 0 23 0 15 0 08 0 03 0 04 0 03 0 16 0 04 0 00 0 08 9500 9441 0 02 0 10 0 11 0 10 0 05 0 16 0 11 0 15 0 21 0 18 10000 10000 0 25 0 01 0 17 0 18 0 16 0 15 0 22 0 29 0 16 0 10 10600 10593 0 45 0 13 0 23 0 17 0 31 0 14 0 36 0 17 0 19 0 22 11200 11220 0 24 0 30 0 17 0 17 0 19 0 28 0 19 0 28 0 17 0 08 11800 11885 0 02 0 17 0 18 0 20 0 18 0 11 0 32 0 42 0 14 0 16 12500 12589 0 13 0 17 0 13 0 12 0 01 0 03 0 02 0 08 0 00 0 03 13200 13335 0 11 0 04 0 01 0 00 0 04 0 02 0 19 0 12 0 13 0 08 14000 14125 0 14 0 27 0 11 0 02 0 05 0 01 0 09 0 14 0 09 0 09 15000 14962 0 34 0 40 0 39 0 22 0 14 0 11 0 05 0 03 0 04 0 01 16000 15849 0 36 0 23 0 19 0 06 0 16 0 13 0 01 0 02 0 01 0 00 17000 16788 0 45 0 38 0 27 0 22 0 17 0 17 0 04 0 08 0 07 0 04 18000 17783 0 56 0 56 0 34 0 22 0 15 0 20 0 04 0 08 0 06 0 14 19000 18837 0 04 0 08 0 19 0 02 0 05 0 03 0 16 0 21 0 19 0 02 20000 19953 0 01 0 03 0 04 0 19 0 22 0 14 0 29 0 42 0 32 0 08 Page 34 Optimus Sound Level Meters User Manual Part Technical Information Influence of the UA 237 windshield on frequency response N
43. 1995 2113 2239 2371 2512 2661 2818 2985 3162 3350 3548 3758 3981 4217 4467 4732 5012 5309 5623 5957 6310 6683 7079 7499 7943 8414 8913 9441 10000 10593 11220 11885 12589 13335 14125 14962 15849 16788 17783 18837 19953 130 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 04 0 04 0 05 0 07 0 08 0 09 0 09 0 08 0 08 0 07 0 06 0 04 0 02 0 00 0 03 0 07 0 12 0 18 0 22 0 26 0 29 0 31 0 30 0 22 0 09 0 01 0 03 0 06 0 06 0 05 0 03 0 02 0 03 0 05 0 13 0 26 0 41 0 54 0 62 0 64 0 67 0 70 0 56 0 25 0 09 0 06 0 17 0 41 0 43 0 22 0 15 0 05 0 52 0 85 1 04 0 76 1 85 1 99 140 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 04 0 04 0 05 0 06 0 08 0 12 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 20 0 21 0 21 0 21 0 19 0 14 0 09 0 03 0 03 0 10 0 22 0 33 0 37 0 38 0 37 0 35 0 33 0 29 0 21 0 10 0 01 0 06 0 01 0 10 0 12 0 09 0 07 0 02 0 15 0 20 0 30 0 44 0 52 0 60 1 04 1 65 1 59 1 14 0 60 0 20 0 21 0 65 1 41 1 33 1 54 150 0 00 0 00 0 00 0 00 0 00 0 00 0 03 0 03 0 03 0 04 0 05 0 08 0 12 0 13 0 14 0 15 0 16 0 18 0 20 0 22 0 25 0 28 0 32 0 37 0 42 0 43 0 43 0 43 0 42 0 42 0 41 0 35 0 28 0 22 0 16 0 10 0 04 0 01 0 05 0 07 0 13 0 21 0 30 0 36 0 34 0 29 0 30 0 30 0 25 0 17 0 09 0 12 0
44. 2 140 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 05 0 06 0 07 0 08 0 12 0 17 0 19 0 20 0 22 0 23 0 25 0 26 0 28 0 30 0 32 0 34 0 35 0 35 0 31 0 26 0 21 0 16 0 10 0 00 0 17 0 28 0 35 0 39 0 43 0 45 0 47 0 42 0 30 0 12 0 12 0 36 0 40 0 35 0 22 0 02 0 19 0 28 0 28 0 03 0 38 0 80 1 31 1 30 0 70 0 77 0 77 0 74 0 39 0 38 1 35 2 05 1 92 1 74 150 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 04 0 04 0 05 0 07 0 10 0 15 0 16 0 17 0 18 0 19 0 21 0 23 0 25 0 29 0 33 0 38 0 44 0 50 0 51 0 53 0 54 0 57 0 62 0 66 0 60 0 50 0 41 0 33 0 26 0 18 0 10 0 02 0 05 0 19 0 36 0 56 0 69 0 69 0 63 0 54 0 37 0 13 0 12 0 37 0 51 0 50 0 40 0 30 0 68 0 71 0 95 0 76 0 24 0 23 0 83 1 28 0 06 0 51 160 0 00 0 00 0 00 0 00 0 00 0 00 0 05 0 06 0 07 0 07 0 07 0 08 0 11 0 13 0 14 0 15 0 17 0 18 0 19 0 21 0 22 0 25 0 28 0 32 0 36 0 37 0 38 0 39 0 38 0 38 0 43 0 56 0 66 0 71 0 76 0 78 0 80 0 81 0 88 0 98 1 08 1 18 1 26 1 30 1 32 1 33 1 27 1 22 1 24 1 16 0 97 0 79 0 58 0 30 0 14 0 36 0 23 0 40 0 54 0 42 0 26 0 20 0 15 1 23 0 33 Angle from reference direction 170 0 00 0 00 0 00 0 00 0 00 0 00 0 04 0 05 0 05 0 06 0 06 0 08 0 09 0 10 0 10 0 10 0 10 0
45. 2 17000 16788 0 90 0 88 0 93 0 94 1 16 1 08 1 24 1 42 1 70 1 80 18000 17783 1 15 1 15 1 16 1 18 1 48 1 51 1 55 1 61 1 87 2 18 19000 18837 1 20 1 19 1 18 1 13 1 45 1 52 1 72 1 86 2 16 2 33 20000 19953 1 12 1 15 1 09 1 05 1 44 1 49 1 64 1 80 2 22 2 39 35 Optimus Sound Level Meters User Manual Part Technical Information 100 to 180 Angle from reference direction Nominal Exact Frequency Frequency 100 140 120 130 140 150 160 170 180 Hz Hz 63 63 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 80 79 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 100 99 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 125 125 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 160 158 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 200 198 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 250 251 0 04 0 04 0 02 0 05 0 00 0 03 0 06 0 02 0 06 315 316 0 03 0 07 0 01 0 07 0 01 0 03 0 09 0 01 0 07 400 398 0 02 0 09 0 00 0 08 0 02 0 03 0 10 0 00 0 06 500 501 0 01 0 11 0 02 0 08 0 03 0 03 0 10 0 01 0 04 630 631 0 04 0 12 0 04 0 08 0 05 0 04 0 08 0 03 0 00 800 794 0 10 0 14 0 08 0 09 0 08 0 08 0 08 0 06 0 06 1000 1000 0 16 0 20 0 44 0 15 0 14 0 13 0 14 0 11 0 44 1060 1059 0 17 0 22 0 16 0 17 0 16 0 15 0 17 0 13 0 12
46. 240 2239 0 27 0 28 0 05 0 13 0 13 0 03 0 05 0 11 0 14 0 13 2360 2371 0 28 0 24 0 08 0 17 0 09 0 03 0 10 0 17 0 18 0 14 2500 2512 0 30 0 14 0 24 0 15 0 03 0 08 0 14 0 21 0 19 0 10 2650 2661 0 35 0 07 0 37 0 07 0 03 0 13 0 15 0 21 0 44 0 01 2800 2818 0 30 0 32 0 30 0 08 0 15 0 17 0 06 0 11 0 05 0 10 3000 2985 0 07 0 30 0 04 0 20 0 26 0 11 0 04 0 00 0 01 0 05 3150 3162 0 12 0 14 0 10 0 27 0 22 0 04 0 04 0 03 0 01 0 03 3350 3350 0 22 0 02 0 17 0 26 0 11 0 01 0 01 0 03 0 02 0 07 3550 3548 0 25 0 05 0 22 0 18 0 02 0 00 0 02 0 03 0 01 0 08 3750 3758 0 23 0 06 0 26 0 06 0 05 0 01 0 03 0 03 0 00 0 06 4000 3981 0 17 0 07 0 27 0 07 0 10 0 01 0 05 0 02 0 02 0 01 4250 4217 0 10 0 13 0 17 0 16 0 12 0 03 0 05 0 04 0 06 0 05 4500 4467 0 05 0 29 0 03 0 17 0 06 0 10 0 01 0 09 0 11 0 12 4750 4732 0 01 0 37 0 18 0 13 0 10 0 09 0 08 0 14 0 13 0 14 5000 5012 0 20 0 12 0 20 0 04 0 15 0 04 0 15 0 09 0 04 0 06 5300 5309 0 46 0 18 0 18 0 23 0 00 0 11 0 08 0 03 0 07 0 03 5600 5623 0 33 0 21 0 01 0 15 0 11 0 02 0 04 0 09 0 07 0 01 6000 5957 0 08 0 15 0 18 0 03 0 08 0 08 0 03 0 02 0 02 0 04 6300 6310 0 15 0 09 0 14 0 10 0 01 0 07 0 06 0 06 0 05 0 04 6700 6683 0 10 0 07 0 05 0 08 0 07 0 01 0 06 0 07 0 04 0 02 7100 7079 0 20 0
47. 3 0 29 630 631 0 27 6000 5957 0 29 800 794 0 27 6300 6310 0 29 1000 1000 0 27 6700 6683 0 29 1060 1059 0 27 7100 7079 0 29 1120 1122 0 27 7500 7499 0 29 1180 1189 0 27 8000 7943 0 30 1250 1259 0 27 8500 8414 0 30 1320 1334 0 27 9000 8913 0 29 1400 1413 0 27 9500 9441 0 29 1500 1496 0 27 10000 10000 0 29 1600 1585 0 27 10600 10593 0 29 1700 1679 0 27 11200 11220 0 33 1800 1778 0 27 11800 11885 0 30 1900 1884 0 27 12500 12589 0 29 2000 1995 0 27 13200 13335 0 30 2120 2113 0 27 14000 14125 0 29 2240 2239 0 27 15000 14962 0 28 2360 2371 0 28 16000 15849 0 29 2500 2512 0 28 17000 16788 0 29 2650 2661 0 31 18000 17783 0 36 2800 2818 0 34 19000 18837 0 57 3000 2985 0 31 20000 19953 0 57 3150 3162 0 28 9 2 5 Reference direction reference direction 0 head on incidence is perpendicular to the microphone diaphragm and parallel to the length of the preamplifier body 9 2 5 Observer position The meter will be either mounted upon a tripod or held in the hand In order to avoid the effect of sound reflections from the body of the operator interfering with the measurement the meter should be located as far as possible from the body 20 Optimus Sound Level Meters User Manual Part Technical Information When taking a measurement the operator should place themselves at a distance behind the tripod mounted meter or extend the hand held meter as far from the body as is possible 9 2 50 Noise Floor
48. 43 0 06 0 06 0 05 0 12 0 18 0 17 0 09 0 31 0 22 0 22 0 16 0 49 0 46 8500 8414 0 20 0 22 0 14 0 07 0 24 0 21 0 06 0 34 0 05 0 27 0 13 0 47 0 32 9000 8913 0 04 0 10 0 17 0 14 0 07 0 11 0 22 0 09 0 19 0 33 0 38 0 29 0 18 9500 9441 0 03 0 01 0 02 0 03 0 15 0 07 0 09 0 03 0 35 0 11 0 29 0 24 0 56 10000 10000 0 02 0 03 0 02 0 10 0 16 0 00 0 15 0 19 0 34 0 07 0 14 0 47 0 52 10600 10593 0 13 0 03 0 00 0 03 0 00 0 11 0 02 0 06 0 02 0 09 0 05 0 10 0 55 11200 11220 0 09 0 03 0 01 0 07 0 16 0 00 0 13 0 27 0 23 0 42 0 37 0 45 0 96 11800 11885 0 03 0 14 0 18 0 17 0 22 0 19 0 32 0 10 0 40 0 35 0 08 0 44 0 25 12500 12589 0 10 0 17 0 19 0 25 0 24 0 26 0 17 0 32 0 39 0 04 0 07 0 19 0 29 13200 13335 0 03 0 02 0 04 0 01 0 14 0 06 0 14 0 14 0 15 0 15 0 00 0 02 0 44 14000 14125 0 03 0 01 0 05 0 01 0 07 0 04 0 06 0 07 0 02 0 08 0 22 0 15 0 24 15000 14962 0 06 0 09 0 09 0 08 0 12 0 09 0 13 0 05 0 16 0 00 0 01 0 04 0 22 16000 15849 0 03 0 05 0 06 0 00 0 09 0 07 0 03 0 09 0 03 0 06 0 56 0 67 0 12 17000 16788 0 07 0 08 0 09 0 01 0 08 0 02 0 05 0 02 0 15 0 30 0 19 0 95 0 48 18000 17783 0 24 0 27 0 28 0 21 0 27 0 13 0 18 0 14 0 08 0 13 0 20 0 08 0 64 19
49. 5 1180 1189 0 29 0 25 0 22 0 18 0 16 0 11 0 08 0 07 0 05 0 05 1250 1259 0 31 0 26 0 23 0 19 0 17 0 11 0 08 0 07 0 05 0 04 1320 1334 0 32 0 27 0 24 0 19 0 17 0 12 0 08 0 07 0 05 0 04 1400 1413 0 34 0 28 0 25 0 20 0 18 0 12 0 08 0 08 0 05 0 04 1500 1496 0 35 0 30 0 26 0 22 0 19 0 13 0 09 0 08 0 05 0 04 1600 1585 0 37 0 32 0 28 0 24 0 21 0 15 0 10 0 09 0 06 0 05 1700 1679 0 39 0 35 0 31 0 26 0 22 0 17 0 12 0 09 0 06 0 05 1800 1778 0 42 0 38 0 34 0 29 0 25 0 19 0 14 0 10 0 07 0 06 1900 1884 0 45 0 41 0 37 0 32 0 27 0 21 0 15 0 11 0 07 0 06 2000 1995 0 49 0 45 0 40 0 35 0 29 0 22 0 16 0 11 0 07 0 06 2120 2113 0 53 0 49 0 44 0 38 0 32 0 24 0 18 0 11 0 07 0 06 2240 2239 0 57 0 53 0 48 0 42 0 34 0 26 0 19 0 12 0 07 0 05 2360 2371 0 61 0 57 0 52 0 46 0 37 0 29 0 21 0 12 0 07 0 05 2500 2512 0 65 0 61 0 58 0 50 0 40 0 32 0 23 0 11 0 06 0 05 2650 2661 0 69 0 67 0 65 0 56 0 42 0 36 0 28 0 11 0 06 0 06 2800 2818 0 77 0 77 0 74 0 62 0 45 0 41 0 33 0 12 0 08 0 07 3000 2985 0 91 0 88 0 79 0 65 0 49 0 40 0 31 0 15 0 09 0 07 3150 3162 1 04 0 96 0 83 0 67 0 53 0 39 0 28 0 18 0 10 0 05 3350 3350 1 14 1 02 0 86 0 69 0 57 0 38 0 26 0 19 0 10 0 04 3550 3548 1 23 1 07 0 91 0 73 0 61 0 39 0 25 0 20 0 09 0 02 3750 3758 1 32 1 12 0 96 0 78 0 65 0 41 0 25 0 20 0 08 0 01 4000 3
50. 56 0 60 0 65 0 71 0 78 0 88 0 98 1 07 1 15 1 24 1 33 1 43 1 55 1 69 1 85 2 04 2 23 2 44 2 64 2 85 3 12 3 39 3 68 4 00 4 34 4 74 5 05 5 43 5 88 6 37 7 00 7 48 7 94 8 59 9 22 9 76 10 34 11 26 12 94 13 23 27 Optimus Sound Level Meters User Manual Part Technical Information 260 to 350 Angle from reference direction Nominal Exact Frequency Frequency 260 270 280 290 300 310 320 330 340 350 Hz Hz 63 63 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 80 79 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 100 99 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 125 125 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 160 158 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 200 198 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 250 251 0 12 0 08 0 06 0 05 0 06 0 03 0 01 0 04 0 03 0 01 315 316 0 13 0 09 0 06 0 05 0 07 0 02 0 00 0 04 0 03 0 01 400 398 0 15 0 10 0 08 0 06 0 07 0 02 0 01 0 05 0 03 0 01 500 501 0 15 0 12 0 10 0 08 0 08 0 04 0 02 0 05 0 03 0 02 630 631 0 16 0 14 0 12 0 11 0 10 0 06 0 04 0 05 0 03 0 03 800 794 0 18 0 18 0 16 0 14 0 12 0 09 0 07 0 05 0 04 0 04 1000 1000 0 23 0 22 0 20 0 17 0 14 0 11 0 09 0 06 0 05 0 05 1060 1059 0 25 0 23 0 21 0 17 0 15 0 11 0 08 0 07 0 05 0 05 1120 1122 0 27 0 24 0 21 0 18 0 16 0 11 0 08 0 07 0 05 0 0
51. 7 0 12 0 13 0 10 0 03 0 10 0 30 0 34 0 23 0 10 0 02 0 11 0 17 0 18 0 08 0 11 0 23 0 19 0 02 0 13 0 00 0 09 0 08 0 06 0 05 0 02 0 11 0 14 0 11 0 20 0 01 0 09 0 04 0 08 0 21 0 35 0 43 0 31 0 36 0 38 0 29 310 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 01 0 01 0 01 0 03 0 06 0 07 0 08 0 09 0 10 0 10 0 10 0 08 0 05 0 01 0 04 0 08 0 11 0 10 0 07 0 02 0 04 0 11 0 16 0 11 0 05 0 01 0 02 0 03 0 01 0 05 0 12 0 13 0 05 0 12 0 11 0 07 0 08 0 06 0 03 0 00 0 04 0 14 0 10 0 08 0 03 0 05 0 20 0 07 0 03 0 09 0 20 0 34 0 39 0 34 0 32 0 49 0 45 320 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 01 0 01 0 02 0 03 0 07 0 08 0 08 0 09 0 09 0 08 0 06 0 04 0 00 0 04 0 07 0 08 0 07 0 02 0 04 0 10 0 16 0 18 0 07 0 04 0 05 0 03 0 01 0 05 0 09 0 10 0 08 0 01 0 09 0 09 0 05 0 05 0 01 0 00 0 03 0 02 0 12 0 03 0 04 0 07 0 08 0 18 0 12 0 18 0 01 0 01 0 09 0 22 0 24 0 20 0 14 0 28 0 21 330 0 00 0 00 0 00 0 00 0 00 0 00 0 01 0 01 0 01 0 01 0 01 0 04 0 07 0 07 0 07 0 06 0 05 0 04 0 01 0 01 0 04 0 06 0 07 0 06 0 02 0 04 0 12 0 19 0 24 0 25 0 13 0 00 0 05 0 04 0 02 0 01 0 03 0 03 0 01 0 03 0 04 0 07 0 15 0 05 0 00 0 00 0 02 0 10 0 05 0 01 0 15 0 02
52. 957 6310 6683 7079 7499 7943 8414 8913 9441 10000 10593 11220 11885 12589 13335 14125 14962 15849 16788 17783 18837 19953 130 0 00 0 00 0 00 0 00 0 00 0 00 0 07 0 08 0 08 0 09 0 11 0 14 0 18 0 20 0 21 0 22 0 24 0 25 0 27 0 30 0 32 0 35 0 39 0 43 0 47 0 52 0 57 0 62 0 67 0 73 0 84 0 99 1 10 1 18 1 25 1 32 1 40 1 51 1 64 1 81 2 00 2 22 2 49 2 70 2 91 3 19 3 51 3 83 4 19 4 56 4 95 5 33 5 83 6 32 6 77 7 31 8 02 8 69 9 49 10 30 11 17 12 17 13 41 14 65 15 14 140 0 00 0 00 0 00 0 00 0 00 0 00 0 06 0 06 0 06 0 08 0 10 0 14 0 18 0 19 0 20 0 21 0 22 0 23 0 25 0 27 0 30 0 33 0 36 0 40 0 44 0 49 0 54 0 59 0 64 0 72 0 84 0 97 1 05 1 11 1 16 1 23 1 31 1 43 1 58 1 77 1 98 2 21 2 49 2 67 2 86 3 12 3 41 3 70 4 02 4 37 4 72 5 06 5 52 6 00 6 51 7 08 7 82 8 54 9 43 10 32 11 22 12 18 13 39 14 35 14 80 150 0 00 0 00 0 00 0 00 0 00 0 00 0 09 0 10 0 10 0 10 0 11 0 13 0 18 0 19 0 21 0 22 0 24 0 25 0 27 0 28 0 30 0 32 0 35 0 38 0 41 0 45 0 49 0 54 0 59 0 65 0 76 0 88 0 96 1 03 1 09 1 16 1 24 1 34 1 48 1 63 1 82 2 04 2 31 2 55 2 77 3 05 3 35 3 65 3 99 432 4 68 5 03 5 51 5 94 6 41 6 90 7 58 8 21 8 96 9 73
53. 981 1 40 1 18 1 02 0 83 0 69 0 44 0 27 0 19 0 07 0 00 4250 4217 1 48 1 26 1 10 0 91 0 75 0 49 0 30 0 20 0 07 0 01 4500 4467 1 59 1 38 1 21 1 01 0 81 0 55 0 36 0 23 0 11 0 04 4750 4732 1 71 1 52 1 35 1 13 0 89 0 63 0 44 0 28 0 16 0 10 5000 5012 1 85 1 69 1 50 1 24 0 97 0 71 0 52 0 32 0 19 0 11 5300 5309 2 01 1 87 1 65 1 35 1 05 0 79 0 59 0 35 0 19 0 10 5600 5623 2 21 2 09 1 81 1 47 1 16 0 89 0 64 0 35 0 16 0 06 6000 5957 2 43 2 24 1 92 1 56 1 25 0 91 0 60 0 32 0 13 0 03 6300 6310 2 66 2 41 2 06 1 69 1 37 0 95 0 61 0 37 0 18 0 06 6700 6683 2 94 2 63 2 26 1 88 1 51 1 04 0 72 0 47 0 25 0 10 7100 7079 3 21 2 84 2 47 2 06 1 62 1 15 0 83 0 51 0 24 0 08 7500 7499 3 46 3 05 2 68 2 20 1 72 1 27 0 86 0 50 0 23 0 09 8000 7943 3 73 3 31 2 93 2 36 1 90 1 39 0 90 0 56 0 32 0 16 8500 8414 4 01 3 59 3 19 2 56 2 11 1 49 1 02 0 68 0 39 0 19 9000 8913 4 33 3 93 3 43 2 80 2 26 1 58 1 15 0 69 0 33 0 13 9500 9441 4 59 4 19 3 54 2 96 2 25 1 64 1 07 0 59 0 27 0 07 10000 10000 4 96 4 51 3 81 3 12 2 44 1 73 1 08 0 66 0 30 0 05 10600 10593 5 39 4 85 4 21 3 34 2 72 1 86 1 27 0 74 0 31 0 04 11200 11220 5 92 5 19 4 61 3 67 2 88 2 04 1 35 0 72 0 29 0 02 11800 11885 6 51 5 82 5 01 4 18 3 21 2 38 1 60 0 96 0 49 0 18 12500 12589 6 86 6 29 5 32 4 29 3 45 2 41 1 65 0 97 0 47 0 17 13200
54. AC output is terminated internally with a series capacitor of 100 pF that is discharged to ground via 1 MQ External equipment connected to the AC output should have a load resistance of 100 kQ or greater and must not have a significant capacitive component The AC output has four user selectable gain settings available via the Advanced AC out Menu High Low levels and 20dB amplifier On Off Voltages and full scale levels are as follows High Levels 70 140dB O dB gain 1 3 Vpk pk 450 mVaus at full scale 140 dB 20 dB gain 1 7 600 mVaus at full scale 132 dB Low Levels 20 90dB 0 dB gain 400 MVpx pk 140 mVaus at full scale 90 dB 20 dB gain 1 3 Vok pk 450 mVaus at full scale 90 dB The ring on the stereo jack socket is configured as a digital input It is connected internally to 3 3 via a 1 resistor This input is not used on the Optimus 5 17 1 NOTE2 Real time clock drift is 2 seconds per day at temperatures between 20 and 25 5 17 2 Minimum amp Maximum Integration Times The minimum integration time for manual measurements is 5 seconds The integration time ranges from 1 minute up to 240 hours in Timer mode and from 5 seconds up to 30 days in manual mode depending on instrument capabilities and storage settings 5 18 1 Microphone Extension Cables The ZL 205 is the standard microphone extension cable with length 5m Section 6 6 2 2 Static Pressure The MK 224 microphone cap
55. F fed from a signal source of impedance 50 Q The Cirrus Research dummy microphone type KP 66 is recommended The KP 66 has a standard BNC input socket and capacitance 18 pF Other types of dummy microphone may be used but please take care that the device has a capacitance of 18 pF 2 pF The input sensitivity is nominally 50 mV Pa i e a signal of 50 MVams at a suitable frequency produces a sound level reading of 94 dB Note that the exact sensitivity varies depending on the specific microphone capsule with which the instrument has been calibrated All microphone types fitted to the Optimus range share the same electrical substitution method and characteristics 5 1 16 Highest Sound Pressure Level Maximum permissible sound pressure level for all microphone types fitted to the Optimus range is 160 dB Maximum input voltage at the input to the dummy microphone is 100 5 1 18 Start up period After being switched on the Optimus is ready to make measurements as soon as the display shows its normal operating view and the date and time are shown in the footer bar i e after the initial boot up sequence has completed This is typically between 5 and 15 seconds after switching on 5 10 1 Overload indication Overload is indicated by the word overload in the chosen language on the display On the Sound Level View and Leq View the overload indicator is situated beneath and to the left of the large number When a measure
56. The averaging time is at least 30 seconds It is recommended that Integrated Level Leq t is used for noise floor measurements 9 2 7c Influence of variations in environmental conditions The Optimus range conform to the specifications of IEC 61672 1 2002 for exposure to radio frequency fields at sound levels not less than 74 dB 9 3a Reference sound pressure level The reference sound pressure level is 1 Pa 94 0 dB 9 3b Reference level range The Optimus is a single range instrument so the only range is the reference range 9 3c Microphone reference point The microphone reference point is the centre of the diaphragm of the MK 224 microphone 9 3d Periodic testing It is recommended to use multi frequency acoustic calibrator for Periodic Testing of frequency response For the B amp K Multifunction Acoustic Calibrator type 4226 use the function settings as follows Microphone b Sound Field Falcon free field These settings require no additional corrections to obtain A weighted sound levels equivalent to the response to plane progressive sound waves from the reference direction at the available frequencies 9 3e Linear operating range Frequency A weighting C weighting Z weighting 31 5 Hz 20 100 dB 30 137 dB 45 140 dB 1 kHz 20 140 dB 30 140 dB 45 140 dB 4 kHz 20 140 dB 30 140 dB 45 140 dB 8 kHz 20 139 dB 30 137 dB 45 139 dB 12 5 kHz 20 136 dB 30 134 dB 45 139 dB
57. The configuration with the greatest susceptibility to AC power fields is with the axis of the field generating coil passing through the centre of the meter s display and exiting through the centre of the back of the case Page 24 Optimus Sound Level Meters User Manual Part Technical Information Appendix 1 Optimus correction data The values in the tables below need to be subtracted from the measurement reading to correct for the corresponding effect Uncertainty figures for all tables below are as stated above in table Expanded combined uncertainty of the corrections page 19 25 Optimus Sound Level Meters User Manual Part Technical Information Influence of reflections and diffraction on the frequency response of a typical MK 224 microphone relative to 0 0 to 120 Angle from reference direction Nominal Exact Frequency Frequency o 10 20 30 40 50 60 70 80 90 100 110 120 Hz 63 63 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 80 79 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 100 99 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 125 125 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 160 158 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 200 198 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 250 251 0 00 0 02 0 02 0 02 0 01
58. ce 18 pF and an input sensitivity is nominally 50 mV Pa see section 9 3g Page 21 The maximum input voltage at the input to the dummy microphone is 100 Vok pk see section 9 31 Page 22 L dB L dB L dB L dB Laar dB x mA 8 from 20 from 30 from 45 from 20 from 30 31 5 Hz to 100 to 137 to 140 to 100 to 110 start 94 start 94 start 94 start 94 start 104 from 20 from 30 from 45 from 20 from 30 from 50 1 kHz to 140 to 140 to 140 to 140 to 150 to 143 start 94 start 94 start 94 start 94 start 104 from 20 from 30 from 45 from 20 from 30 12 5 kHz to 136 to 134 to 139 to 136 to 146 start 94 start 94 start 94 start 94 start 104 38 Optimus Sound Level Meters User Manual Part Technical Information Girrus Research Offices The addresses given below are the Cirrus Research plc offices Cirrus Research plc also have approved distributors and agents is many countries worldwide For details of your local representative please contact Cirrus Research plc at the address below Contact details for Cirrus Research authorised distributors and agents are also available from the Internet Web site at the address shown below Main Office Cirrus Research plc Acoustic House Bridlington Road Hunmanby North Yorkshire United Kingdom YO14 OPH Telephone 44 0 1723 891655 Fax 44 0 1723 891742 E mail sales cirrusresearch co uk Web Site www cirrusresearch co uk Germany Cirrus Research plc Deutschland Arabella Cente
59. e 31 simultaneously 9 2 2e The Optimus has no level range controls 9 2 2g See User manual for the optimus sound level meters page 18 and Section 5 15 5 Page 9 9 2 2h See User manual for the optimus sound level meters page 30 9 2 21 See section 9 2 21 16 9 2 2 Computer software is not part of the optimus sound level meters 9 2 2k See User manual for the optimus sound level meters page 30 9 2 3a See User manual for the optimus sound level meters page 31 9 2 3b See User manual for the optimus sound level meters page 20 9 2 3 See User manual for the optimus sound level meters page 17 9 2 4 See User manual for the optimus The following acoustic calibrators sound level meters page 39 may be used with Optimus meters Class 1 CR 515 Class 2 CR 514 9 2 4b See User manual for the optimus The calibration check frequency is 6 Optimus Sound Level Meters User Manual Part Technical Information sound level meters page 41 1 kHz 9 2 4c See User manual for the optimus Optimus will accept a new sound level meters page 13 acoustic calibration offset if the level is stable and the new offset is in the range 1 5 dB 9 2 4d See section 9 2 4d Page 17 9 2 5a See section 9 2 5a Page 19 9 2 5b See section 9 2 5b Page 19 9 2 5d See section 9 3h Page 21 9 2 5e See secti
60. e on the Sound Level View or Leq View is below 14 0dB the value will be replaced by dashes These levels are typically below the noise floor of the microphone capsule and so will only be encountered during electrical testing 5 14 1 User adjustable thresholds There are no user adjustable thresholds in the Optimus sound level meter within the scope of IEC 61672 1 2002 Note some models include the Dose View which features adjustable thresholds These functions conform to IEC 61252 Personal Sound Exposure Meters 5 15 5 Display update rate The display update rate for numerical values is 0 5 seconds for SPL functions and 1 second for Leq functions 5 15 6 Integration method The optimus sound level meters display a valid integrated noise level within 2 seconds of the start of a measurement 5 16 1 Electrical output specifications AC output is provided for testing purposes only No electrical outputs are within the scope of IEC 61672 1 2002 AC output is provided on Pin 4 of the 18 way utility connector with Ground on Pin 1 and on the tip of the 2 5mm stereo jack connector with Ground on the outer ring The AC output is a buffered amplifier capable of driving loads down to 32 Q The highest maximum output voltage before clipping is 1 7 The maximum output power is 35 mW and short circuit AC current will not exceed 100 mA 10 Optimus Sound Level Meters User Manual Part Technical Information The
61. e than 5 C Sudden changes in barometric pressure will also affect measurements This is due to pressure equalization in the microphone capsule which is vented via the preamplifier into the instrument body or cable back shell In particular the low frequency response and absolute sensitivity will be affected The instrument must be allowed to stabilize for at least 10 minutes after a sudden change in barometric pressure of more than 5 kPa 9 3m Field Strength gt 10 V m Not applicable The Optimus conforms to the specifications of IEC 61672 1 2002 for electric field strengths up to and including 10 V m 9 3n Radio Frequency Emissions No mode of operation or configuration produces radio frequency emissions significantly greater than any other However for reference purposes the worst case configuration for testing is with the plane of electric field perpendicular to the centre of the display 9 30 AC Power and Radio Frequency Susceptibility The operating mode of the meter display mode storage settings etc has no effect on susceptibility to radio frequency and AC power frequency fields 23 Optimus Sound Level Meters User Manual Part Technical Information The configuration with the greatest susceptibility to radio frequency fields is with ZL 205 microphone extension cable fitted USB data cable fitted the meter case vertical with display facing the radio transmitter and vertically polarised electrical field
62. eflections and diffraction Incidence direction plane perpendicular to instrument display screen vertical 500 0 Hz 1000 0 Hz 0 2000 0 Hz 4000 0 Hz 8000 0 Hz 12500 0 Hz 3009 2705 os 90 240 ON 1209 180 Page 13 Optimus Sound Level Meters User Manual Part Technical Information Responses of Optimus with typical MK 224 microphone capsule with UA 237 Windshield influences of microphone frequency response reflections and diffraction Incidence direction plane parallel to instrument display screen horizontal 500 0 Hz 1000 0 Hz 0 2000 0 Hz 4000 0 Hz 8000 0 Hz 12500 0 Hz 3009 2709 pe Uum oues cams Gr uae 7 90 240 Y 120 180 Page 14 Optimus Sound Level Meters User Manual Part Technical Information Responses of Optimus with typical MK 224 microphone capsule with UA 237 Windshield influences of microphone frequency response reflections and diffraction Incidence direction plane perpendicular to instrument display screen vertical 500 0 Hz 1000 0 Hz 0 2000 0 Hz 4000 0 Hz 8000 0 Hz 12500 0 Hz 3009 2709 pec CMM FAL 909 240 e 1209 1809 15 Optimus Sound Level Meters User Manual Part Technical Information 9 2 2 Frequency Weightings Tolerance limits dB Nominal Frequency weightings dB Frequency Class Hz A 2 1 2 10 70 4 14 3 0 0 3 5 5 5 12 5 63 4 11 2 0 0 3 0
63. er 30 seconds 22 Optimus Sound Level Meters User Manual Part Technical Information Self generated noise L be E I ee 105 Electric 15 dB 24 dB 35 dB 15 dB 25 dB Acoustic 18 dB 25 dB 35 dB 18 dB 28 dB The instrument s connections for data communication are non reactive which means that the displayed value cannot be altered by either the hardware or the software Using the microphone extension cable does not require to apply any correction to the reading 9 3i Highest sound pressure level Maximum permissible sound pressure level for all microphone types fitted to the Optimus range is 160 dB Maximum input voltage at the input to the dummy microphone is 100 Vox px 9 3j Battery voltage range When powered by 4 x AA primary batteries maximum 6 8 V minimum 4 5 V The instrument automatically shuts down when the battery voltage drops below 4 5 V When powered via USB maximum 5 3 V minimum 4 7 V 9 3k Display device The display device will display all levels over the entire linear operating range 9 31 Typical Stabilization Time after changes in environmental conditions Sudden changes in temperature will affect Optimus measurements This is due to temperature differentials between parts of the analog circuit and their stabilized power supply circuits In particular the noise floor will rise The instrument must be allowed to stabilize for at least 1 hour after a sudden change in temperature of mor
64. ment is NOT in progress the overload indicator is shown for at least 1 second so that very short transient overload conditions are visible to the operator 9 Optimus Sound Level Meters User Manual Part Technical Information When a measurement IS in progress the overload indicator stays on until the measurement is stopped or reset In some circumstances the overload and underrange indicators will be shown simultaneously In this case the text will be abbreviated to save space The overload indicator can also shown when measurements are recalled from memory in Recall Mode 5 11 1 Under range indication Under range is indicated by the word underrange in the chosen language the display On the Sound Level View and Leq View the overload indicator is situated beneath and to the left of the large number The under range indicator is shown for at least 1 second so that very short transient under range conditions are visible to the operator Under range is indicated on the Sound Level View and Leq View The level below which under range is displayed depends on the frequency weighting shown for the big number on the selected display page A weighting less than 20 0 dB C weighting less than 35 0 dB Z weighting less than 45 0 dB In some circumstances the overload and underrange indicators will be shown simultaneously In this case the text will be abbreviated to save space Note that if any displayed decibel valu
65. on 5 1 18 Page 8 9 2 5f See section 5 16 6 Page 9 9 2 5i See section 5 1 14 Page 8 9 2 5j See section 5 1 14 Page 8 9 2 5k See section 5 1 14 Page 8 5 10 1 Page 8 5 11 1 Page 8 and User manual for the optimus sound level meters page 19 9 2 51 See section 5 14 1 9 9 2 5 See User manual for the optimus sound level meters page 16 9 2 5n See section 5 18 1 Page 10 9 2 50 See section 9 2 50 Page 20 9 2 5p See section 5 16 1 Page 9 9 2 6a See Appendix 1 Optimus correction data Page 24 9 2 6b No correction is required for standard microphone extension cables 9 2 6c See User manual for the optimus sound level meters page 32 9 2 6d See section 5 18 1 Page 10 9 2 7a No components of the optimus are intended to be operated only in an environmentally controlled enclosure 9 2 7b See section 6 5 2 Page 10 9 2 7c See User manual for the optimus sound level meters page 43 and section 9 2 7c Page 20 9 3a See section 9 3a Page 20 9 3b See section 9 3b Page 20 9 3c See section 9 3c Page 20 9 3d See section 9 3d Page 20 9 3e See section 9 3e Page 20 9 3f See section 9 3f Page 21 9 3g See section 9 3g Page 21 9 3h See section 9 3h Page 21 9 3i See section 9 3i Page 22 9 3j See section 9 3j Page 22 9 3k See section 9 3k Page 22 9 31 See section 9 31 Page 22 9 3m See section 9 3m 22 9 3n See section 9 3n 22 9 30 See section 9 30 22
66. ote that the UA 237 is spherically symmetrical angles 3509 1909 are equivalent to 10 170 0 to 90 Angle from reference direction Nominal Exact Frequency Frequency 0 10 20 30 40 50 60 70 80 90 Hz Hz 63 63 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 80 79 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 100 99 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 125 125 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 160 158 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 200 198 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 250 251 0 03 0 04 0 07 0 07 0 02 0 01 0 04 0 04 0 02 0 01 315 316 0 04 0 05 0 09 0 09 0 04 0 01 0 05 0 04 0 01 0 01 400 398 0 06 0 06 0 09 0 10 0 06 0 02 0 06 0 05 0 03 0 01 500 501 0 07 0 08 0 10 0 10 0 07 0 03 0 06 0 05 0 05 0 01 630 631 0 09 0 10 0 11 0 11 0 10 0 06 0 08 0 06 0 08 0 04 800 794 0 14 0 15 0 14 0 14 0 13 0 12 0 12 0 10 0 11 0 09 1000 1000 0 22 0 23 0 23 0 22 0 21 020 0 19 0 17 0 17 0 16 1060 1059 0 25 0 26 0 26 0 25 0 23 0 22 0 22 0 19 0 19 0 18 1120 1122 0 28 0 29 0 29 0 27 0 25 0 24 0 24 0 22 0 21 0 20 1180 1189 0 31 0 32 0 32 0 30 0 28 0 27 0 27 0 24 0 23 0 22 1250 1259 0 34 0 34 0 35 0 34 0 30 0 30 0 29 0 27 0 26 0 25 1320 1334 0 37 0 37 0 38 0 37 0 33 0 32 0 32 0 29 0 28 0 27 1400 1413 0 40 0 40 0 41 0 40 0 35
67. ound level meters page 10 5 1 8 Computer software is not a part of the Sound Level Meter 5 1 10 See User manual for the optimus sound level meters page 31 5 1 12 The optimus sound level meters have a single measurement range 5 1 13 See sections 9 3a and 9 3b Pages 20 and 20 5 1 14 See section 5 1 14 Page 8 5 1 15 See section 9 3g 21 5 1 16 See section 5 1 16 8 amp section 9 3 i Page 22 5 1 17 The optimus sound level meters are single channel instruments 5 1 18 See section 5 1 18 Page 8 5 2 1 See User manual for the optimus sound level meters page 39 5 2 3 See User manual for the optimus The microphone should be sound level meters page 42 and for checked if the calibration offset general guidance on calibration page deviates by more than 1 dB from 39 the previous calibration 5 2 4 See Appendix 1 Optimus correction data Page 24 5 2 5 See Appendix 1 Optimus correction data Page 24 5 2 7 See section 9 3d Page 20 5 2 8 See section 9 3d Page 20 4 Optimus Sound Level Meters User Manual Part Technical Information 5 4 12 See section 9 2 2 15 There are no optional frequency responses 5 5 9 See section 9 3e 20 5 5 10 See section 9 3e 20 5 5 11 See section 9 3k Page 22 5 6 2 See section 9 3h
68. r Lyoner Strasse 44 48 D 60528 Frankfurt Germany Telefon 49 0 69 95932047 Fax 49 0 69 95932049 E Mail vertrieb cirrusresearch de Website www cirrusresearch de France Cirrus France Ltd 40 Bis Avenue Gabriel Faur 09500 Mirepoix France Tel 33 5 61 67 40 01 33 5 61 67 40 56 Email sales cirrusresearch fr Web www cirrusresearch fr Cirrus Environmental Unit 2 Bridlington Road Industrial Estate Hunmanby North Yorkshire YO14 OPH United Kingdom Tel Email Web 44 0 1723 891722 sales cirrus environmental com www cirrus environmental com
69. sule has a static barometric pressure coefficient of 0 0066 dB kPa This corresponds to a change of 0 28dB between 108 kPa and 65 kPa The CR 515 acoustic calibrator uses internal static pressure compensation to keep its output sound level within specified tolerance limits between 108 kPa and 65 kPa static pressure Therefore no additional correction by the operator is necessary 6 5 2 Electrostatic discharge The instrument does not suffer permanent degradation or loss of functions after electrostatic discharges of up to 4 kV by contact or 8 kV by air discharge Temporary loss of function may result the instrument may restart 11 Optimus Sound Level Meters User Manual Part Technical Information Section 9 9 2 2 Directional response The following polar charts are provided for illustrative purposes For tabular data please see Appendix Optimus adjustment data page 24 Responses of Optimus with typical MK 224 microphone capsule influences of microphone frequency response reflections and diffraction Incidence direction plane parallel to instrument display screen horizontal 500 0 Hz 1000 0 Hz 0 2000 0 Hz 4000 0 Hz 8000 0 Hz 12500 0 Hz 3009 2709 posses REM DE LEE 90 240 1202 1809 Page 12 Optimus Sound Level Meters User Manual Part Technical Information Responses of Optimus with typical 224 microphone capsule influences of microphone frequency response r

Download Pdf Manuals

Related Search

Related Contents

HIGH END SYSTEMS AXON MEDIA SERVER Manufacturer Product  Bluetooth  Consejos y Técnicas en Preanalítica  BLANCO PLUS 8 S  StarTech.com 24in Latching SATA to Right Angle SATA Serial ATA Cable  Rapoo E1050  Avaya 5620SW + EU24 IP Phone User Manual  VE 570 - Domyos  User Manual - Parallax.bg  HP 8082A User's Manual  

Copyright © All rights reserved.

• https://telegra.ph/Calculat-Wire-Area-From-Voltage-Drop-c165d8bc-11-16
• https://telegra.ph/Wire-Size-Calculator-From-Voltage-Drop-e66effc9-11-16
• https://telegra.ph/Concrete-Volume-Calculator-for-Steps-4e3b768e-11-17
• https://telegra.ph/Square-Column-Concrete-Volume-Calculator-6b9c78f7-11-13
• https://telegra.ph/Wall-Concrete-Volume-Calculator-e01f6b48-11-13
• https://telegra.ph/1-3-6-Concrete-Mix-Calculator-7b4c7b31-11-13
• https://telegra.ph/Wire-Size-Calculator-From-Voltage-Drop-dc632e6c-11-17
• https://telegra.ph/Wire-Size-Calculator-From-Voltage-Drop-39107249-11-18
• https://telegra.ph/Calculate-Wire-Resistor-from-Voltage-Drop-f555d7c8-11-18
• https://telegra.ph/Wire-Size-Calculator-From-Voltage-Drop-e104b613-11-18