Norsonic nor1256 Instruction Manual Download | Manualshive

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nor

1256

Class 1

Sound Calibrator

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Summary of Contents for nor1256

Page 1: ...INSTRUCTION MANUAL nor1256 Class 1 sound calibrator Complies with IEC 60942 class 1 ...

Page 2: ... instrumentation described herein Further more Norsonic AS assumes no responsibility for any infringement of the intellectual property rights of third parties wherever applica ble which would result from such use Norsonic AS reserves the right to amend any of the information given in this manual in order to take account of new developments If you wish to communicate with us please feel welcome Our...

Page 3: ...nor1256 Class 1 Sound Calibrator ...

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Page 5: ...indicated by the LED on the front turning from red to green The feedback ensures that the sound level is nearly independent of the acoustic load volume of the microphone By pressing the dB button the sound pressure level may be switched between 94 dB 114 dB By pressing the Hz button the frequency of the sound may be switched between 1 kHz and 250 Hz Due to the principle of operation the calibratio...

Page 6: ...for the LED above the dB button to change from red to green The level and frequency is indicated in the display of the calibrator After powering the sound calibrator the first combination of frequncy level is 94 dB re 20µPa and 1 kHz Select the appropriate level and frequency for your calibration by pressing the dB or Hz button respectively Normally the background level should be more than 20 dB l...

Page 7: ...ressed until the red LED turns on Acclimatisation Is always a good practice to let the calibrator and the sound measuring equipment reach the prevailing en vironmental conditions mainly temperature before using a sound calibrator If the sound calibrator and the microphone to be calibrated have different temper atures an unstable conditions exits and the calibration will not be reliable Unit for te...

Page 8: ...responds to most 1 measuring microphones with the protection grid mounted The sound pressure levels generated by the calibrator may be adjusted by the following procedure NOTE it will not be possible to switch the calibrator OFF during calibration mode The nominal attenuation of the A weighting is 0 dB at 1 kHz reference frequency and 8 6 dB at 250 Hz The nominal A weighted sound pressure levels f...

Page 9: ...14 0 CEL 186 3F 192 2 192 2F 94 0 bzw 114 0 93 9 bzw 113 9 GRAS 40 AE 40 AF 94 0 bzw 114 0 93 9 bzw 113 9 GRAS Low Noise 40 HL 94 0 93 9 GRAS 40 AU 40 AIR 40 AQ 94 0 bzw 114 0 94 0 bzw 114 0 GRAS 40 AG 40 AK 40 GK 94 0 bzw 114 0 94 0 bzw 114 0 Larson Davis 2540 2541 94 0 bzw 114 0 93 9 bzw 113 9 Mikrotech Gefell MK 102 1 94 0 bzw 114 0 93 7 bzw 113 7 Mikrotech Gefell MK 221 MK222 MK223 94 0 bzw 11...

Page 10: ...hile the display is blinking press Hz to increase the reading or dB to reduce the reading When the correct value is displayed press C F and the value for humidity start to blink While the display is blinking press Hz to increase the reading or dB to reduce the reading When the correct value for humidity is displayed press C F and the calibration mode is terminated and the instrument returns to nor...

Page 11: ...114 0 0 2 dB 94 0 0 2 dB Distortion Max 2 0 Stabilizing time 20 seconds Sensitivity to environmental conditions As specified for IEC 60942 class 1 Microphone size 1 1 and below Adapter for 1 2 micro phone Nor4583 included Power supply Battery operated two LR03 alkaline batteries AAA size also classified as 24A by ANSI NEDA Voltage for specified operation 2 V 3 4 V Automatic switch off if the volta...

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Page 13: ...of the LVD and EMC Directive The direction of maximum sensitivity emission is with the display facing the antenna This product has been manufactured in compliance with the provisions of the relevant internal Norsonic production standards All our products are tested individually before they leave the factory Calibrated equipment traceable to national and international standards has been used to car...

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Page 16: ... for acoustics from sound calibrators micro phones preamplifers via small handheld sound level meters to advanced yet portable real time analysers but also building acoustics analysers and complete community industry and airport noise monitoring systems Contact your local representative or the factory for information on our complete range of instrumentation ...

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