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Last updated: |
7/20/2011 |
Tests list for calibration services for Sound Level Meters and Analyzers |
| All calibration services offered by Scantek Inc are traceable to SI (International System of Units) through standards maintained by NIST or NPL-England or PTB-Germany. All calibration services include before and after data at no extra cost. |
| *The basic calibration service is performed either using exclusively acoustical tests or a combination of electrical and acoustical tests. |
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| Calibration using combined electrical and acoustical tests |
Basic calibration* |
Standard calibration |
| Acoustical tests |
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| Overall acuracy test (ANSI S1.4 #/IEC 61672-3 #9) |
x |
x |
| A-weighted global acoustical response (ANSI S1.4 #6.2.1/IEC 61672-3 #11) |
x |
x(if needed) |
| Separate calibration of the microphone (if possible) |
|
x(if possible) |
| Dosimeter (ANSI S1.25 (#7.7) ): Exponent circuit and integrator: linearity test, with ER=5 (or another one available) |
x |
x |
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| Electrical tests |
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Tests according to ANSI S1.4 - 1983 (R2001)/IEC 651:1979 |
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Input Amplifier Test: Gain Step Test/Amplifier Setting (# 5.3); |
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| - performed at 1 kHz |
x |
x |
| - performed at 31.5 Hz and 8 kHz |
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| Level Linearity Test (# 6.9 & 6.10); |
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| - test performed at 31.5 Hz, 1 kHz and 8 kHz |
|
x |
| - performed at 1 kHz |
x |
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| Weighting Network Tests : A, C, Lin/Flat Network (# 6.2.1) (for the networks present) |
x (only one) |
x |
| Overload Detector Test: A-Network (# 8.3.1) |
|
x |
| Fast And Slow Overshoot Test (# 8.4.1) |
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| - performed on reference range, at one level |
|
x |
| - on reference range, repeated at one or more lower levels |
|
x (type 1) |
| Fast And Slow Single Tone Bursts Test (# 8.4.1) |
x |
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| - performed on reference range, at one level |
|
x |
| - on reference range, repeated at one or more lower levels |
|
x (type 1) |
| F/S/I Test: Steady State Response (# 6.4) |
x |
x |
| Impulse Test: Single Tone Burst (# 8.4.3 part 1) |
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| - performed on reference range, one level |
|
x |
| - on reference range, repeated at one or more lower levels |
|
x (type 1) |
| Impulse Test: Continuous Sine Wave Bursts (# 8.4.3 part 3) |
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| - performed on reference range, one level |
|
x |
| - on reference range, repeated at one or more lower levels |
|
x (type 1) |
| Peak Detector Tests: Single Square Wave Burst (# 8.4.4) |
|
x |
| RMS Detector Test: Continuous Sine Wave Burst (# 8.4.2) |
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| - performed on reference range, one level |
x |
x |
| - on reference range, repeated at one or more lower levels |
|
x (type ) |
| RMS Detector Test: Crest Factor Test (# 8.4.2) |
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| - performed on reference range, one level |
|
x |
| - on reference range, repeated at one or more lower levels |
|
x (type 1) |
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| Tests according to ANSI S1.43 - 1997(R2002) / IEC804: 1985 |
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| Level Linearity Test (# 8.3.3) |
|
x |
| Time Averaging Test (# 8.3.2) |
x |
x |
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| Tests according to IEC 61672 - 3: 2006: these tests are an alternative for the tests performed in accordance with IEC 651 and IEC 804 (or ANSI equivalents), listed above. |
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| Self-noise test (#10) |
|
x |
| Frequency Weighting (#12): A |
|
x |
| Frequency Weighting (#12): C |
|
x |
| Frequency Weighting (#12): Z |
|
x |
| Frequency and Time Weighting @ 1kHz (#13) |
|
x |
| Level Linearity on the Reference Range Level (#14) |
|
x |
| - performed at 8 kHz |
x |
x |
| - performed at 31.5 Hz, 1 kHz and 8 kHz |
|
x |
| Level Linearity Includinbg the Level Range Control (#15) |
x |
x |
| Tone-Burst Response (#16) |
x |
x |
| Peak C Sound Level (#17) |
|
x |
| Overload Indication (#18) |
|
x |
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| Tests of filters: relative attenuation |
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| - digital filters: relative attenuation for selected filters (IEC 1260 / ANSI S1.11) |
x (one filter: 1 kHz) |
x(2 upper filters) |
| - analog filters: relative attenuation for all filters (IEC225) |
x |
x |
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| Calibration using acoustical tests only |
Basic calibration* |
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| Tests according to ANSI S1.4 - 1983 (R2001) / IEC 651: 1979 (Clause # ANSI) |
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| Overall acuracy test at 1kHz |
x |
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| C-weighted global response (# 6.2.1) |
x |
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| A-weighted global response (# 6.2.1) |
x |
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| Input Amplifier Test: Gain Step Test/Amplifier Setting (# 5.3); - performed at 1 kHz |
x |
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| Level Linearity Test (# 6.9 & 6.10); - performed at 1 kHz (reduced test) |
x |
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| Fast And Slow Single Tone Bursts Test (# 8.4.1), performed on reference range, at one level |
x |
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| F/S/I Test: Steady State Response (# 6.4) |
x |
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| RMS Detector Test: Continuous Sine Wave Burst (# 8.4.2) |
x |
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| Tests according to ANSI S1.43 - 1997(R2002) / IEC 804: 1985 |
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| Level Linearity Test (# 8.3.3) |
x |
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| Tests according to IEC 61672 - 3: 2006: these tests are an alternative for the tests performed in accordance with IEC 651 and IEC 804 (or ANSI equivalents), listed above. |
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| Frequency Weighting (#11): A |
x |
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| Level Linearity on the Reference Range Level (#14) - performed at 1 kHz |
x |
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| Level Linearity Includinbg the Level Range Control (#15) |
x |
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| Tests of dosimeter functions according to ANSI S1.25 - 1997 |
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| - Exponent circuit and integrator: linearity test (#7.7) tested for ER=5 |
x |
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| - Absolute Sensitivity test ( # 7.2.1) (if Overall accuracy above cannot be performed) |
x |
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Tests list for calibration services for Personal Dosimeters |
| When possible, dosimeters are tested as Sound Level Meters with additional functions, as detailed in the tables above. For other cases, we will perform the tests listed below. |
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| Calibration using acoustical tests only |
Basic calibration* |
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| Tests of dosimeter functions according to ANSI S1.25 - 1997 |
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| - Frequency response: Low frequency test (#7.2.2) tested for ER=3,4,5 |
x |
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| - Exponent circuit and integrator: linearity test (#7.7) tested for ER=3,4,5 |
x |
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| - Absolute Sensitivity test ( # 7.2.1) |
x |
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