Svantek SV 34B Скачать руководство пользователя страница 8

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SV 34B User Manual

b) holding the cover unscrew four fixing screws with your
fingers

c) take off the cover and remove discharged batteries

d) put two new batteries in
place of the discharged
ones with polarization as
indicated on the printed
board and

calibrator’s case

e) carefully put on the cover so that the diodes fit the
corresponding holes in it

f) holding the cover with one gently hand fasten the fixing
screws

g) put on the rubber cover.

Содержание SV 34B

Страница 2: ...3 1 1 Calibration 3 1 2 Accuracy of calibration 3 2 Acoustic calibrator SV 34B 5 2 1 General description 5 2 2 Using the calibrator 6 2 2 1 Button functions 6 2 2 2 Indicators 7 2 3 Replacing the bat...

Страница 3: ...libration factor 1 2 Accuracy of calibration Measuring equipment and measurement methods have deviations The measured variable is affected by environmental conditions temperature and humidity as well...

Страница 4: ...f 1kHz Class Type LS 1 2 Sound level meters dB 0 7 1 0 Acoustic calibrators dB 0 10 0 25 0 40 As shown in Table 1 the acoustic calibrator has unambiguously lower tolerances than the sound level meter...

Страница 5: ...f 1 kHz frequency is digitally generated and feeds the loudspeaker The sampled signal from the reference piezoresistive sensor indicates the level of currently generated signal in a feedback loop Base...

Страница 6: ...l cause full reset of the system Normally this function is not necessary It has been implemented in the case of inappropriate operation of the calibrator caused by external EM radiation subnormal atmo...

Страница 7: ...continuous light Note Calibration should not be performed until the 114 dB diode light is continuous The diode called LOW BAT presents the batteries status When the combined battery voltage is less t...

Страница 8: ...charged batteries d put two new batteries in place of the discharged ones with polarization as indicated on the printed board and calibrator s case e carefully put on the cover so that the diodes fit...

Страница 9: ...c max 10 sec Microphone dimensions 13 2 mm or with reduction adapter SA 30 Storage temperature range 25 C to 70 C 13 F to 158 F CE classification EN 61010 1 2010 EN 61326 1 2013 EN 60942 2003 Working...

Страница 10: ...RF emission in the direction parallel to the axis of the calibrated microphone in the acoustic chamber The lowest level of noise immunity is parallel to the axis of the calibrated microphone in the a...