ONO SOKKI CO., LTD.
CF-7200 Portable FFT Analyzer
Noise analysis procedure
Страница 1: ...ONO SOKKI CO LTD CF 7200 Portable FFT Analyzer Noise analysis procedure...
Страница 2: ...The unit calibration in this document the analog output of the sound level meter is connected to the CH1 of the CF 7200 and the level range is selected as 100 dB Throughout this document the name of a...
Страница 3: ...Power switch ON 1 Input the CAL signal of the Sound Level Meter 2 Turn on the START button 3 Display the spectrum 4 Setting the voltage range and frequency range 5 Unit calibration 6 Measurement and...
Страница 4: ...t value of the selected level range and the dB value of it is displayed The level range of the sound level meter is selected as 100dB so 6dB of it is 94dB The unit calibration of the CF 7200 is to mat...
Страница 5: ...order MAIN INPUT EU CH1 to turn ON the Y EU ON to enable the unit calibration function Default value of unit calibration value is 1 2 Press the keys in the order MAIN INPUT EU CH1 SP EU to open the S...
Страница 6: ...an analog signal which passes through the frequency weighting A C or FLAT depending on the type of sound level meter Be careful with this matter 8 When changing the level range of the sound level met...
Страница 7: ...input signal Analog filter The input signal is AD converted by passing through the A weighting filter Press the keys in the order MAIN INPUT INPUT COND CH1 FILTER and turn ON the A WEIGHT Operation 2...
Страница 8: ...The following description assumes that the measurement will be made using the power spectrum arithmetic averaging function 1 Press the soft keys in the order MAIN ANALYSIS AVERAGE MODE and set PWR SP...
Страница 9: ...G button on the operation panel and then press the START button to start the measurement When the specified number of averaging times has reached the measurement will stop When the lamp on the AVG but...
Страница 10: ...he search point will be displayed The up and down arrow buttons are used to more quickly move the search point 2 Peak list display Press the soft keys in the order MAIN DISPLAY LIST and turn on the ON...
Страница 11: ...CF format with the file extension of dat can be opened by other FFT analyzers using the DS 0221 FFT analysis software for example The memory function of the model CF 7200 has been significantly improv...
Страница 12: ...ORY DATA Then turn on the LIST key This operation will display the list of the data files saved 5 Click on the lowest unused number to move the selection cursor the files will be saved to this locatio...
Страница 13: ...1 Copying saved data to a USB memory device When copying the data in the CF card to a USB memory device the data can be copied either selectively or entirely Be sure to use a USB memory device type th...
Страница 14: ...CARD USB key is set to ON after pressing the keys in the order MAIN MEMORY UTILITY COPY FILES click Yes to start copying the files The following message will be shown while the files are being copied...
Страница 15: ...st click to open the Source menu CARD INT USB on the Copy Data Memory window and select CARD from the menu Then click to open the Target menu CARD INT USB on the Copy Data Memory window and select USB...
Страница 16: ...ther press the SELECT button to divide the window into two sub windows After that press the TIME button of CH1 to display the time waveform It results in the dual window of time and spectrum In this w...
Страница 17: ...band is changed depending on the frequency range Also the displayed highest and lowest bands are insufficient data so they are for reference 1 Press SELECT button to activate the lower screen Check t...
Страница 18: ...tave data cannot save as dat data 4 How to cancel the octave display After activating the octave screen by the SELECT button with the indication of SELECT button press SPECT button of CH1 and turn off...
Страница 19: ...Stop the measurement by pressing the STOP button on the operation panel 4 Press the keys in the order MAIN DISPLAY 3D ON to turn ON the 3D display 5 Turn ON the START button on the operation panel an...
Страница 20: ...hed the cross section of X and Y is displayed 7 Changing number of drawings Press the keys in the order MAIN DISPLAY 3D SET 3D COND LINE NUM to set the arbitrary line number 10 to 400 Cross section Y...
Страница 21: ...rn to the default setting refer to the operation procedures Section 1 1 17 Power off Press and hold the power button to finish the measurement 18 Other useful function 1 How to start with the last mea...
Страница 22: ...cut registration windows 1 2 in the CF 7200 Each of them can be registered up to 5 keys 10 in total Those windows can be switched with the tab button Register the shortcut key The key is registered wh...
