PASCO Specialty & Mfg. CI-6506B User's Manual
Contents
1. Instruction Sheet for the PASCO Model Cl 6506B 012 06296B SOUND SENSOR aperture for sensor Introduction The PASCO CI 6506B Sound Sensor is designed to be used with a PASCO computer interface to make measurements of relative intensity of sound The sensing element of the Sound Sensor is an electret condenser microphone which consists of an electret membrane metal electrode and field effect transistor that are in an efficient configuration yielding superior signal to noise ratios gt 60 dB and excellent frequency response 20 to 16 000 Hz Two stages of amplification are provided to condition the low level signal from the microphone for input into the Science Workshop computer interface The output from the sensor is bipolar and ranges between 10 volts When the sensitivity is raised to high in Science Workshop 700 interface only the Sound Sensor detects voltage levels as low as 0 0005 volts corresponding to sound levels that are barely audible to the human ear Sound levels ranging from classroom background noise 45 dB to levels exceeding 100 dB are easily detected with the Sound Sensor The Oscilloscope and Fast Fourier Transform FFT functions of Science Workshop may be used effectively 10101 Foothills Blvd Roseville CA 95747 7100 PASC OR Phone 916 786 3800 FAX 916 786 8905 www pasco com interface cable with DIN connectors tocompuier interface with the Sound Sensor2. ills Blvd P O Box 619011 Roseville CA 95678 9011 Phone 916 786 3800 FAX 916 786 8905 email techsupp pasco com PASC ON
3. litude of the voltage The for mulais B 10 log A 2 A 0 2 Where A is the amplitude of the voltage and A 0 is the theoretical amplitude for a sound level of 0 dB Ata frequency of 440 Hz A 0 10 4 volts ap proximately To have Data Studio perform this calculation click on th Calculate button and type the following equation sound level 10 log amplitude 10 10 001 v 2 10 8 In the Variables section of the Calculator define v as Voltage Ch A This equation is optimized for a sine wave at 440 Hz so you may need to adjust the third argument of the amplitude function it should be about equal to the pe riod of the wave The value of 10 4 volts is also optimized for 440 Hz Since the response of the sound sensor varies with frequency you may want to calibrate the equation for a different frequency To do so you would need a stand alone sound level meter Measure the sound level of as sound B with the meter and the voltage amplitude A with the sound sensor Use these val ues to solve for A 0 in the first equation above Plug into any analog channel Plug into any analog channel Figure 1 Connecting the Sound Sensor into the computer interface Open the Experiment Setup window in Science Workshop Click and drag the analog plug icon to the analog channel icon that matches the analog port you are using for the Sound Sensor Figure 2 Science Workshop File Edit Experiment Di
4. n some PASCO apparatuses alignment hole 1 4 20 screw connector Z E Figure 6 Mounting connector and alignment hole DIN Connector Specifications 1 analog output 0 to 10 V analog output signal ground 6 N no connection 5 V DC power power ground 4 12 VDC power 2 12 VDC power no connection StS M a SS Sound Sensor 012 06296B Copyright Warranty and Equipment Return Please Feel free to duplicate this manual subject to the copyright restrictions below Copyright Notice The PASCO scientific 012 06296A instruction sheet is copyrighted and all rights reserved However permission is granted to non profit educational institutions for reproduction of any part of the Sound Sensor instruction sheet providing the reproductions are used only for their laboratories and are not sold for profit Reproduction under any other circumstances without the written consent of PASCO scientific is prohibited Limited Warranty PASCO scientific warrants the product to be free from defects in materials and workmanship for a period of one year from the date of shipment to the customer PASCO will repair or replace at its option any part of the product which is deemed to be defective in material or workman ship The warranty does not cover damage to the product caused by abuse or improper use Determination of whether a product failure is the result of a manufacturing defect or impro
5. per use by the customer shall be made solely by PASCO scientific Responsibility for the return of equipment for warranty repair belongs to the customer Equipment must be properly packed to prevent damage and shipped postage or freight prepaid Damage caused by improper packing of the equipment for return shipment will not be covered by the warranty Shipping costs for returning the equipment after repair will be paid by PASCO scientific Equipment Return Should the product have to be returned to PASCO scientific for any reason notify PASCO scientific by letter phone or fax BEFORE returning the product Upon notification the return authorization and shipping instruc tions will be promptly issued gt NOTE NO EQUIPMENT WILL BE ACCEPTED FOR RETURN WITHOUT AN AUTHORIZATION FROM PASCO When returning equipment for repair the units must be packed properly Carriers will not accept responsibility for damage caused by improper packing To be certain the unit will not be damaged in shipment observe the following rules The packing carton must be strong enough for the item shipped Make certain there are at least two inches of packing material between any point on the apparatus and the inside walls of the carton Make certain that the packing material can not shift in the box or become compressed allowing the instrument come in contact with the edge of the packing carton Address PASCO scientific 10101 Footh
6. re in step 4 Calibration and Sensitivity Adjustment in Science Workshop To open the Sound Sensor s calibration window double click on the Sound Sensor icon in the Experiment Setup window see Figure 4 The sensitivity gain of channels A and B of the 300 500 and 700 interfaces in Science Workshop can be adjusted by selecting the appropriate level from the drop down menu Figure 5 Ifthe Sound Sensor is producing voltage above 1 V the sensitivity should be set to Low 1x If the Sound Sensor is producing voltages between 1 V and 1 V select Medium 10x With the Science Workshop 700 interface the sensitivity can be set to High 100x if the voltage is very low between 0 1 V and 0 1 V Refer to the User s Guide for Science Workshop for more details concerning calibration and adjusting the sensitivity setting A_i rs ci il P Sound Sensor Calibrated Measurement intensity calculations Calibration Units 2 max Yalts High Value 100 000 Rend Low Valine 100 000 10 000 Read Cancel Cur Value 96 086 bh f Sensitivity Low 1x Figure 5 Dialog box for calibrating and adjusting the gain for the Sound Sensor in Science Workshop PASC Oi Mounting on an Experimental Apparatus Use the 1 4 20 screw connector located on the bottom of the sensor box to secure the Sound Sensor to an experimental apparatus Figure 6 The alignment hole fits over an alignment pin included o
7. splay Help Untitled SWS E E dcinor Workolep ANALOG CHANNELS Rec _Hoe stor SOO merac z l 2 PLET E en ane i DIGITAL CHARNELS Click and drag this digital plug to a channel for motion EEL rotation atc Eiji o B FE RA Digits Meter Scope FFT Table Graph Click and drag a display icon to a channel or sensor to display data Figure 2 Activating the analog channel in Science Workshop Select Sound Sensor from the drop down menu Figure 3 Ai 63 Choose an analog sensor Pa A Voltage Sensor FPWR E gt Power Amplifier AHP T eam FOrce Sensor 1 Acceleration Sensor k i Light Sensor Sound Sensor Figure 3 Setting up the Sound Sensor in Science Workshop Open a display window such as the Oscilloscope display by dragging and dropping the appropriate display icon to the Sound Sensor icon Figure 4 PASC ON 012 06296B Sound Sensor Science Workshop File Edt Expenmernt Display Help Untitled SWs rumis Heart SEY imeriice 1 mo i RATAL CHAHNELS Click and drag this digital plug to channel for realiri f tian f radiation rotaioni leas alo iia oa Ev a Digits Meter L Table Graph ig lick arid dr rag a display ic ON to z channel or sensar to display data Figure 4 Opening a Display window in ScienceWorkshop Additional display windows can be opened by following the procedu
8. the Oscilloscope allows the student to view the Sound Sensor output directly and the FFT function will transform the time domain signal from the sensor to a frequency domain display These two functions allow the student to investigate the frequency composition of sound produced by the human voice a tuning fork or loud speaker driven by a complex waveform such as a square wave Both the Oscilloscope and FFT functions may be used simultaneously The Sound Sensor can be plugged directly into any PASCO computer interface box or can be connected to the interface box using the supplied cable with 8 pin DIN connectors Equipment Included e sound sensor in sensor box e 6 foot cable with 8 pin DIN connectors Additional Equipment Required e Any PASCO ScienceWorkshop computer interface 300 500 or 700 series for Macintosh or Windows or the 6500 series interface for DOS 1997 PASCO scientific Author Sunny Bishop Sound Sensor 012 06296B Additional Equipment Suggested e Tuning Forks SE 9325 or SE 9326 e Organ Pipe with Sliding Piston SF 9328 e Acoustics Demonstration Disk SF 9410 Setup Procedure Connect the Sound Sensor and any analog channel on the computer interface box with interface cable Figure 1A or insert the DIN plug of the Sound Sensor into the jack of any analog channel on the computer interface box Figure 1B The sound level which is measured in decibels can be calculated from amp
Download Pdf Manuals
Related Search