CONTENTS Title Page I. SAFETY INFORMATION………..……….………….. 1 Environment conditions…………………………….....1 Maintenance & Clearing……………………………….1 Safety symbols………………………………………… 1 II. GENERAL DESCRIPTION……………………..…….. 2 III. SPECIFICATIONS..…………………..……………….. 2 IV. NAME AND FUNCTIONS..………….……………….. 5 V. CLOCK & INTV SETUP……….……………….……… 6 DataLogger…………………………………………….. 6 Clock Setup……………………………………………...6 Recording Interval Setup………………………………7 Auto Power Off………………………………………… 7 . VI. CALIBRATION PROCEDURES….…………………..
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 & Clearing § Repairs or servicing not covered in this manual should only be performed by qualified personnel.
III. 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.
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 × 2.5 × 1.2inch (275 × 64 × 30mm) Weight: 285g (including battery) Accessories: 9V battery, carrying case, Screwdriver, Instruction manual. Windscreen, 3.5? plug, software & RS-232 cable (optional model 732A).
?1 Windscreen If you operate at wind speed over 10m/sec, please put protective accessories in front of the microphone.
Note: When the user powers it on, the LCD will show how much memory space is available to use (model 735). ?4 MAX / MIN hold button Press button 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.
?12 Signal output terminal AC: 1 Vrms Corresponding to each range step. Output impedance ? 100O Output signal by standard 3.5mm coaxial socket signal. Note: At “Auto” level range, output signal is Auto select on “Lo” or “Med” or DC Signal “Hi” level range. AC Signal Ground DC: Output: 10mV/dB Output impedance = 1KO The output signal is sent by standard 3.5mm coaxial socket signal. ?13 External DC 9V power supply terminal Allows for an external AC adapter. ?14 Tripod mounting screw. ?15 Battery Cover V.
§ Recording Interval Setup: 1: Press and hold the “A/C” button and then power on the meter: 2: Press “FAST/SLOW"(INTV) button: 3: Press "REC" ? or "LEVEL" ? to increase or decrease number, press “FAST/SLOW " (INTV) to adjust next item, then press “FAST/SLOW” (INTV) to finish. If you want to abort during a setup process, press the power button to cancel. § Auto Power Off: When the meter is turned on the default auto power off is enabled.
Display: dBA Time weighting: 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.
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. (3) Select desired Level. (4) 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. (5) When MAX MIN (maximum, minimum hold) mode is chosen.
§ 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 Taskbar 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.
Interface. For better result, the user may close the panel window. Graph Tool Bar - Display or hide Statistic1. - Display or hide Statistic2. - Normal cursor. - 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. - When selected, the mouse cursor will become an "I" sign when moving to the graph, click on the graph to annotate. - Color graph. - Monochrome graph.
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.
When you have the Sound Level DATA LOGGER meter connected to PC and select "DataLogger" from main menu or click from 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).
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 to start recording 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.
(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. 2. 3. 4. 5. 6. Power on the Sound Level Meter. Press the REC button of the meter to start recording data. After a while, press REC button again to stop recording data. Connect the Sound Level Meter to PC Start AK-73X program. Choose Data Logger from main menu or click from tool bar. 7.In reference to Data Logger, see DataLogger.
§ Frequently Asked Question 1. I 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.
Limited One-Year Warranty B&K Precision Corp. warrants to the original purchaser 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&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.
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 performance 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.
