Model 732A Manual
Contents
1. FULL Memory full Gi Auto Power OFF active 2 Power amp Backlight button The key turns the sound level meter ON or OFF and backlight ON amp OFF Press it once to turn on the sound level meter Press it again for moment to turn ON or OFF backlight Press and hold this button 3 seconds to turn the unit OFF 4 Note When the user powers it on the LCD will show how much memory space is available to use model 735 MAX MIN hold button Press Cif utton to enter the maximum and minimum recording mode Select the proper Level range before using MAX MIN to ensure that reading value will not exceed the measurement range Press once to select MAX value Press again to select MIN value and press again to select current value with MAX MIN annunciator will begin to blink Press Cif and hold down button for 2 seconds to exit the MAX MIN mode Note If you change sound level range or change AC weight the MAX MIN mode will clear A Record Datalogger button model 735 When you press the Ceoutton the meter will begin recording The REC annunciator will be displayed press again and it will stop recording Frequency Weighting select button A A Weighting Used for general sound level measurements C C Weighting Used for checking the low frequency content of noise If the C Weighted level is much higher than the A weighted level then there is a large amount of low frequency noise Time weighting select bu2. the desired response Time and Weighting If the 8 sound source consists of short bursts or only catching sound peak set response to FAST To measure average sound level use the SLOW setting Select A weighting for general noise sound level and C weighting for measuring sound level of acoustic material Select desired Level Hold the instrument comfortably in hand or fix on tripod and point the microphone at the suspected noise source the sound pressure level will be displayed When MAX MIN maximum minimum hold mode is chosen The instrument captures and holds the maximum and minimum noise level for a long period using any of the time weightings and ranges Press the MAX MIN button 2 seconds to clear the MAX MIN reading MAX MIN symbol disappears 6 Turn OFF the instrument and remove battery when not in use X Setup TestLink AK 73X Sound Level Meter RS232 interface software included with model 735 The TestLink package contains 1 80mm CD 2 Custom designed RS232 cable for TestLink System Required Windows 95 Windows 98 or Windows NT 4 0 above Minimum Hardware Require d PC or Notebook with Pentium 90MHz or higher 32 MB RAM At least 5 MB byte hard disk space available to install TestLink Recommended resolution 800X600 Install TestLink 1 We recommend closing all other applications before installing the TestLink 2 Insert setup CD disk to CD disk drive 3 Choose the Start button on the Tas
3. the manual carefully before use This unit conforms to the IEC651 type2 ANSI S1 4 Type2 for Sound Level Meters This Data Logger Sound Level Meter internal memory can keep up to 32000 records Note 1 It uses RS232 interface to perform bi directional communication with PC Note1 model 735 Press REC to begin recording press REC again to stop recording The data will be loaded into the memory until it is full Il SPECIFICATIONS Standard applied IEC651 Type2 ANSI S1 4 Type2 Frequency range 31 5Hz 8KHz Measuring level range 30 130dB Frequency weighting A C Microphone 1 2 inch electret condenser microphone Display LCD Digital display 4 digits Resolution 0 1dB Display Update 0 5 sec Analog display 50 segment bargraph Resolution 1dB Display Update 50 mS Time weighting FAST 125mS SLOW 1 sec Level ranges Lo 30 80 dB Med 50 100 dB Hi 80 130 dB Auto 30 130 dB Accuracy 1 5dB under reference conditions 94dB 1KHz Dynamic range 100 dB 50 dB model 732A Alarm function OVER is when input is more than the upper limit of range UNDER is when input is less than the lower limit of range MAXMIN hold Holds readings the Maximum and Minimum Value AC output 1 Vrms at FS full scale Output impedance Approx 1000 FS means the upper limit of each level range DC output 10mV dB output impedance approx 1KO Power supply One 9V battery 006P or IEC 6F22 or
4. CONTENTS Title Page ly SAFETY INFORMATION eseu ees es 1 Environment ODER sde e ewes Seege 1 Maintenance amp Cleamg 1 Safety SVMDOIS E 1 Il GENERAL DEGSCHRIPIION eres 2 IL SPECIFICATIONS 0 ce ce ceeee cece eee ee ee ee eens 2 IV NAME AND FUNCTIONS 5 V CLOCK IT Eeer eege Ee 6 Datalogger eege leede 6 Clock SGU EE 6 Recording Interval Getp eee 7 Auto Power EE 7 VI CALIBRATION PROCEDUREG A 7 VIIL MEASUREMENT PREPARATION 0 80064 8 VIII OPERATING PRECAUTIONS ee 8 IX MEASUREMENT EE 9 X Setup TestLink AK 73X Sound Level Mete r RS232 interface software 9 I SAFETY INFORMATION Read the following safety information carefully before attempting to operate or service the meter Use the meter only as specified in this manual otherwise the protection provided by the meter may be impaired Environment conditions Altitude up to 2000 meters Relatively humidity 90 max Operation Ambient 0 40 C Maintenance amp Clearing Repairs or servicing not covered in this manual should only be performed by qualified personnel Periodically wipe the case with a dry cloth Do not use abrasives or solvents on this instruments Safety symbols CE comply with EMC When servicing use only specified replacement parts Il GENERAL DESCRIPTION Thank you for using our Data Logger Sound Level Meter To ensure that you can get the most from it we recommend that you read and follow
5. NEDA 1604 Power life About 50hrs alkaline battery AC adapter Voltage 9 VDC center pin negative 8 15VDC Max Supply current gt 30mADC Socket pin Ground Casing Positive External Diameter 3 5mm Internal Diameter 1 35mm Electromagnetic Compatibility RF field 3V m Total accuracy specified accuracy 0 5dB Operation temperature 0 to 40 C 32 to 104 F Operation humidity 10 to 90 RH Storage temperature 10 to 60 C 14 to 140 F Storage humidity 10 to 75 RH Dimensions L x W x H 10 8 x 2 5 x 1 2inch 275 x 64 x 30mm Weight 285g including battery Accessories 9V battery carrying case Screwdriver Instruction manual Windscreen 3 5 plug software amp RS 232 cable optional model 732A Specifications and information subject to change without notice Please visit www bkprecision com for the most current product information IV NAME AND FUNCTIONS 7 Windscreen If you operate at wind speed over 10m sec please put protective accessories in front of the microphone 2 Displ spicy NHB MAX MIN FAST SLOW Gia CL win On 3 w i e uf Er Ze Si dBA werd SYMBOL FUNCTION LCD 4 digits MAX Maximum indication MIN Minimum indication REJ Over range Under range FAST Fast response SLOW Slow response dBA A Weighting dBC GWeighting 84 190 Range Indicate ES Low Battery a Under range 20dB Following items for model 735 AUTO Auto Level range selective REC Recording Datalogger
6. PEE Real Time Graph 7 In reference to Data Logger see DataLogger 15 Frequently Asked Question 1 had connected the Sound Level Meter to PC serial port and turned the meter on but it still shows NO CONNECTION Answer It could be that all serial port are occupied by other application close all other application If it still don t work Restart your computer and run TestLink AK 73X again 2 How can I save the graph to a file which can be used in EXCEL Answer When you save a graph to a file the default file format is ghf and you can select csv to save files CSV is an EXCEL file format you can open in EXCEL 3 How to uninstall TestLink AK 73X Answer Uninstall TestLink AK 73X by launching the Add Remove Programs applet out of the Control Panel highlighting the AK 73X and clicking on the Add Remove icon then it will remove the AK 73X folder and files from your computer 4 Why would loading data fail Answer This might be caused by the slow response from some of the notebook PC system 5 How to zoom in on the graph Answer Press the left mouse button and drag the cursor to select the new extents and then release the mouse button 6 When I setup the real time sampling with a fast rate e g 0 1 sec some of the sampling data might be missing Answer This might be caused by slow response time of the PC 16 Limited One Year Warranty B amp K Precision Corp warrants to the original purc
7. ance problem and return any leads probes connectors and accessories that you are using with the device Non Warranty Service Return the product in the original packaging to the address below Clearly state in writing the performance problem and return any leads probes connectors and accessories that you are using with the device Customers not on open account must include payment in the form of a money order or credit card For the most current repair charges please visit www bkprecision com and click on service repair Return all merchandise to B amp K Precision Corp with pre paid shipping The flat rate repair charge for Non Warranty Service does not include return shipping Return shipping to locations in North American is included for Warranty Service For overnight shipments and non North American shipping fees please contact B amp K Precision Corp B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 Include with the returned instrument your complete return shipping address contact name phone number and description of problem 18
8. g FAST Measurement mode MAX MIN Mode function disable Level range 50 to 100dB 2 Insert the microphone housing carefully into the insertion hole of the calibrator 3 Turn on the switch of calibrator and adjust the CAL potentiometer of the unit The level display will indicate the desired level All products are well calibrated before shipment Recommended Recalibration cycle 1 year VII MEASUREMENT PREPARATION 1 Battery Loading Remove the battery cover on the back and put in one 9V Battery 2 Battery Replacement When the battery voltage drops below the operating voltage this symbol will appear Klee 9 Volt battery 3 AC Adapter Connection When the AC adapter is used insert the plugs of the adapter into the DC 9V connector on the side panel VIII OPERATING PRECAUTIONS 1 Wind blowing across the microphone would bring additional noise When using the instrument in the presence of wind always use the windscreen to eliminate unwanted noise 2 Calibrate the instrument before operation if the instrument was not in use for a long period of time 3 Do not store or operate the instrument at high temperature and high humidity environment 4 Keep the microphone dry and avoid severe vibration 5 Please take out the battery and keep the instrument in a low humidity environment when not in use IX MEASUREMENT 1 Open battery cover and install a 9V battery in the battery compartment 2 Turn power on and select
9. g real time data and there will be a waveform on the Real Time Graph Window 5 Click to start recording 2 How to save the recorded real time data to a file 1 Click on the graph window you want to save and the graph window will become active then choose File Save from main menu or click H from the tool bar an we window ee active window E Pete z ave rm Caen Set E er es Sec T kapeta l i am CT Hee 2 There will be a save dialog window for you to choose the file name and file type to save There are three types of file names you can choose binary file ghf text file txt and EXCEL format file csv The ghf file use much fewer disk space to save the data than the other two file format but it can only be used in TestLink AK 73X Text file can be opened by TestLink AK 73X and any other word processor program like word notepad etc EXCEL format file can be opened by TestLink AK 73X and Microsoft EXCEL SC ala of 3 How to load the recorded data from the memory of Sound Level Meter and save it to a file Only for the model with Data Logger 1 Power on the Sound Level Meter 2 Press the REC button of the meter to start recording data 3 After a while press REC button again to stop recording data 4 Connect the Sound Level Meter to PC 5 Start AK 73X program 6 Choose Data Logger from main menu or click Re from tool bar oi Tie Guat
10. haser that its products and the component parts thereof will be free from defects in workmanship and materials for a period of one year from date of purchase B amp K Precision Corp will without charge repair or replace at its option defective product or component parts Returned product must be accompanied by proof of the purchase date in the f orm of a sales receipt To obtain warranty coverage in the U S A this product must be registered by completing a warranty registration form on www bkprecision com within fifteen 15 days of purchase Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs The warranty is void if the serial number is altered defaced or removed B amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss of use Some states do not allow limitations of incidental or consequential damages So the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 17 BK PRECISION Service Information Warranty Service Please return the product in the original packaging with proof of purchase to the address below Clearly state in writing the perform
11. ill become an I sign when moving to the graph click on the graph to annotate EE Color graph ko Monochrome graph You can choose a rectangle area on the graph to zoom in for detail There are two vertical lines CURSOR A and CURSOR B in the graph There are 11 time and value display on top and right side of each cursor You can move the mouse cursor over cursor A or B and click to drag the cursor to move left or right Right below the cursor A and B is a slider You can also click and drag slider to move cursor A or B Below the slider is the statistic it displays start time sampling rate data number maximum and minimum of the graph The statistic also displays the maximum minimum and average between cursor A and B and these data will update automatically when cursor A or B is moving You can double click the graph to call the option dialog The option dialog allowed you to customize your graph style And you can right click the graph real time graph is not allowed to call out the popup menu You can Zoom this graph by using mouse To Zoom 1 Press the left mouse button and drag the cursor to select the new extents 2 Release the mouse button To Undo the Zoom Right click on the graph there will be a pop up menu select Undo Zoom DataLogger flee Male E mf o a seve eebe wane gt REH D 12 When you have the Sound Level DATA LOGGER meter connected to PC and select DataLogger from main men
12. kbar and select Run 4 Type E SETUP and choose OK then it will copy AK73X exe executable file and help file to your hard disk default is c program files TestLink AK73X For detailed other operation instruction please refer to the online help while executing AK73X Main Menu File Open Retrieve files from the disk Save Save the active window when the caption bar is highlighted data to the disk Print Print the data of the active window graph or list Printer Setup Select printer File Exit Terminates TestLink program View Control Panel By opening the Panel Window the user can control the meter via the button in this window View Real Time Graph Open Real Time Graph to display and graph the present data Real Time Data Run Start collecting real time data Stop Stop collecting real time data DataLogger By opening the DataLogger Window the user can load recorded data from the meter to the PC in this window Output To Graph Graphing tabular data 10 Interface For better result the user may close the panel window Graph CURSOR B Bm fe BP ies er 1 Badia rl Milanit e ess laate Statistic 2 Tool Bar Display or hide Statistic1 B Display or hide Statistic2 x Normal cursor D When selected the mouse cursor will become a cross sign when moving to the graph click on the graph to mark a cross sign on the graph kd When selected the mouse cursor w
13. lock Setup 8 II press and hold the A C button and then power on the meter L od Ke 3 press REC or LEVEL to increase or decrease g number press MAX MIN clock to adjust next item The tie j adjusting order is year month day hour minute then L JEE J press MAX MIN clock to finish adjusting If you want to abort during a setup process press power button to cancel 6 Recording Interval Setup 1 Press and hold the A C button and then power on the meter a SEL 2 Press FAST SLOW INTV button l 3 Press REC or LEVEL to increase or decrease EE number press FAST SLOW INTV to adjust next item oo then press FAST SLOW INTV to finish If you want to f Ink J abort during a setup process press the power button to EE EE cancel Auto Power Off When the meter is turned on the default auto power off is enabled The meter will power itself off after 30 minutes if no keys are pressed and no RS232 communication is established To disable the auto power off feature press and hold the FAST SLOW button while using the on off button to turn the unit on Once this is done you will no longer see the symbol the display VI CALIBRATION PROCEDURES Using a standard Acoustic Calibrator B amp K model CAL73 94dB 1KHz Sine wave Acoustic Calibrator Screwdriver 1 Make the following switch settings Display dBA Time weightin
14. tton FAST for normal measurements SLOW for checking average level of fluctuating noise Level range control button Each time you press the putton the level range will change between Lo level Med level Hi level and Auto level Microphone 1 2 inch Electret Condenser microphone 30 CAL potentiometer RX TX GND Is used for calibration adjustment VC A RS 232 Interface The RS 232 signal output is a 9600 bps N 8 1 serial interface 32 Signal output terminal AC 1 Vrms Corresponding to each range step Output impedance 1000 Output signal by standard 3 5mm coaxial socket signal Note At Auto level range output signal is Auto select on Lo or Med or Hi level range DC Signa AG Signal Ground DC Output 10mV dB Output impedance 1KO The output signal is sent by standard 3 5mm coaxial socket signal 33 External DC 9V power supply terminal Allows for an external AC adapter 34 Tripod mounting screw 35 Battery Cover V DATA LOGGER CLOCK amp INTERVAL SETUP Model 735 Only DataLogger When you press the REC button the meter will begin recording and pressing the REC button again will stop f recording If you want to clear the memory power off the L SURE meter then press and hold the REC button and then ELA press power button and hold it for at least 5 seconds then LCD will show CLR and SURE to clear the memory C
15. u or click fr lig tool bar to load recorded data from the meter and there will be a progress indicator to show the loading progress if an error occurs just click DataLogger again After the data is loaded the left hand side will show how many data sets were loaded and detail information for each data set start data start time recording rate and record numbers For SSES Ge PM 01 25 38 00 02 5142 3 1999 7725 PM 09 29 08 00 02 21 a 1999 7 25 PM 09 32 04 00 02 3 5 1999 7 25 PM 09 32 09 00 02 1 le 1999 7 25 PM 09 32 14 00 02 9 1999 7 25 PM 10 03 43 00 02 1896 8 1999 7 25 PM 11 06 57 00 02 3 1999 7 25 PM 11 49 47 00 02 9086 It will transfer data to a graph and tabular on the right hand side every time after you load recorded data from the Sound Level Meter and you can click at any data set to change the set for graph On the right hand side is the waveform graph and statistic of the data set you choose Tutorial Quick Start to Use AK 73X TestLink 1 Recording real time data in waveform 1 Power on the Sound Level Meter first and connect it to a PC via the RS 232 serial port with the cable SE 300 2 Start AK 73X program 13 3 If the connection is successful the panel will display the same value as the Sound Level Meter If it failed to connect the meter with the PC it will display No Connection on the panel window in TestLink AK 73X 4 When the connection is successful click D to start recordin
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