User's Guide Digital Datalogging Sound Level Meter Model HD600
Introduction Congratulations on your purchase of the Extech HD600 Digital Sound Level Meter. This meter measures and displays sound pressure levels in dB (decibels) from 30 to 130dB in three measurement ranges. In addition to the LCD numerical displays, a bargraph is included for quick and easy viewing of sound level changes. Features include selectable Frequency Weighting (‘A’ and ‘C’), selectable Response Time (Fast and Slow), Max/Min Hold, and AC/DC analog outputs.
Meter Description 1. Windscreen 2. LCD Display 3. Setup-button: 4. Record button 5. A/C weighting 6. Max/Min display 7. Range button 8. Microphone 9. Backlight 10. Fast/Slow response 11. HOLD 12. ON/OFF Tripod Mount (rear) Battery Compartment (rear) SIDE PANEL 13. External 9VDC power adaptor 14. USB pc port 15. DC/AC analog output 16.
Initial Setup Battery Installation/AC Adaptor The meter can be powered by one 9V battery or by an AC power adaptor. Before inserting or replacing the battery and before connecting the AC adaptor, be sure to turn off the meter. Time and Date Setup The SETUP mode is used to set the time, date and default measurement range. Once set, the meter will retain the settings in non-volatile memory. Resetting should not be required.
Measurements MEASUREMENT CONSIDERATIONS 1. Wind blowing across the microphone increases the noise measurement. Use the supplied windscreen to cover the microphone when applicable. 2. Calibrate the instrument before each use if possible. Especially if the meter has not been used for a long period of time. 3. Do not store or operate the instrument in areas of high temperature or humidity. 4. Keep meter and microphone dry. 5. Avoid severe vibration. Protect the meter from impact. Do not drop it.
MAX / MIN In the MAX/MIN mode the meter will display and hold either the maximum or minimum reading. The display will update only when the measured value exceeds the value presently in the display. 1. Press the MAX/MIN button and the MAX icon will appear on the display. The reading displayed is the highest reading encountered since the MAX mode was entered. 2. Press the MAX/MIN button again. The MIN icon will appear on the display.
ANALOG OUTPUTS The meter is equipped with an analog output feature. The analog output jack is located on the meter’s side panel and requires a 3.5mm stereo phono plug. (1AC Output, 2-DC Output, 3- Ground) AC analog output The AC output is a retransmitted representation of the meter’s measurement (note that the output factors in the meter’s frequency weighting selection ‘A’ or ‘C’). Output voltage: 1Vrms at full scale of the selected range. Output impedance: 100Ω approx.
USB PC Interface The meter has a built-in USB port for use with the supplied data acquisition software. The software allows the user to download stored data, view, save, export, and print readings from the sound level meter. SOFTWARE INSTALLATION Refer to the documentation included with the software for complete details on installation and operation of the application program and the USB driver software. SOFTWARE COMMUNICATION 1. Connect the meter to the PC using the supplied USB cable. 2.
Typical A-Weighted Sound Levels dBA 140 50HP Siren (100') 130 Jet takeoff (200') 120 Riveting machine 110 100 Subway (20') 90 Pneumatic drill (50') 80 Vacuum cleaner (10') 70 Large store 60 Small office 50 Night residential area 40 Whisper (5'0) 30 20 Chain saw Boiler room Freight train (100') Speech (1') Large Office Residence Sound studio 10 Threshold of hearing 0 Copyright © 2013‐2015 FLIR Systems, Inc.
