Sigicom 080-02850-0, Manual, Page: 32 / 36

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Appendix A Specifications
A.1 Reference conditions (factory calibration)

Range/Standard: FAST; 55 - 130 dBA / S04

Sound pressure level: 94 dB

Frequency: 1000 Hz

Temperature: 23 ºC

Static-pressure: 101.3 kPa

Direction: 90 degrees off the sound source
A.2 Accuracy
S50 follows the demands for class 1 sound level meters, which
implies that it is capable to measure the sound pressure level of a
sinusoidal signal at the calibration frequency, for each frequency
weighting provided, within an absolute accuracy better than ±0.7 dB
(ANSI) and extended uncertainty (95% confidence) of 1.1 dB (IEC).
Transient file low-pass filter characteristics (except for frequency
weighting):

+/- 0.25dB up to 1250 Hz

-3dB at 1500Hz

-25dB at 2000Hz
Warm-up time: Less than one minute after power-up of the
controlling Datalogger.