Extech Instruments HD600 User manual

User's Guide

Digital Datalogging Sound Level Meter

Model HD600

HD600-EU-EN v1.3 07/13

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. PC cable and software enable the user to download and analyze measured data. This

meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable

service.

Safety

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.

Environmental Conditions

Altitude up to 2000 meters

Relative Humidity: 90% max

Operating Temperature: 32 to 104°F (0 to 40°C

Maintenance and Cleaning

Servicing not covered in this manual should be performed by qualified personnel.

Periodically wipe the case with a dry cloth. Do not use abrasives or solvents.

HD600-EU-EN v1.3 07/13

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. CAL potentiometer

DISPLAY

Symbol Function

MAX Maximum hold

MIN Minimum hold

OVER Over range

UNDER Under range

FAST Fast response

SLOW Slow response

dBA A-Weighting

dBC C-Weighting

REC Recording data

AUTO Auto range selection

FULL Memory full

HOLD Data hold

Auto Power Off enabled

Low battery indicate

HD600-EU-EN v1.3 07/13

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.

NOTE: Press the HOLD button at any time during this procedure to save the set data and to return

to normal operation

1. Make sure the meter is OFF to start

2. Press and hold the SETUP button and then press the power

button. Release the SETUP button to enter the setup mode.

3. Press the SETUP button to enter the “minutes” adjustment

screen. Press the LEVEL button to adjust the minutes to the

current time.

4. Press the SETUP button to enter the “hour” adjustment screen.

Press the LEVEL button to adjust the hour to the current time.

“h-P” indicates PM and “h-A” indicates AM.

5. Press the SETUP button to enter the “date” adjustment screen.

Press the LEVEL button to adjust the date to the current day.

6. Press the SETUP button to enter the “month” adjustment screen.

Press the LEVEL button to adjust the display to the current

month.

7. Press the SETUP button to enter the “year” adjustment screen.

Press the LEVEL button to adjust the display to the current year.

8. Press the SETUP button two more times to view the default

range (low “L-050” and high “H-100”). This range cannot be

adjusted.

9. Press the SETUP button to enter the time/date reset screen.

NOTE: If the HOLD button is pressed with this screen displayed the

time and date will be reset to default values.

HD600-EU-EN v1.3 07/13

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. Transport the meter in

the supplied case.

6. Remove the battery when the meter is to be stored for long periods of time.

BASIC OPERATION

1. Turn the meter ON by pressing the button.

2. Select ‘A’ or ‘C” frequency weighting by pressing the A/C button.

3. Select Fast or Slow response time by pressing the FAST/SLOW button.

4. Use the LEVEL button to select the appropriate range. The range is shown near the top of the

display. Use a range that puts the sound level reading in the center of the range. If the OVER

or UNDER icons appear on the display, select a new range if possible.

5. The numeric and bargraph displays indicate the sound level measurement.

6. To turn the meter off, press and hold the button for 3 seconds.

LEVEL

The LEVEL button is used to select the measurement range. Press this button to step through the

ranges as indicated on the display (30 to 80, 50 to 100, 80 to 130, or 30 to 130 autoranging)

A/C FREQUENCY WEIGHTING

Press the A/C button to select ‘A’ or ‘C’ frequency weighting. With ‘A’ weighting selected, the

frequency response of the meter is similar to the response of the human ear. ‘A’ weighting is

commonly used for environmental or hearing conservation programs such as OSHA regulatory

testing and noise ordinance law enforcement. ‘C’ weighting is a much flatter response and is

suitable for the sound level analysis of machines, engines, etc. Most noise measurements are

performed using 'A' Weighting and SLOW Response.

FAST/SLOW RESPONSE TIME

Use the FAST/SLOW button to select a FAST (125 ms) or a SLOW (1 second) response time.

Select FAST to capture noise peaks and noises that occur very quickly. Select the SLOW response

to monitor a sound source that has a consistent noise level or to average quickly changing levels.

Select SLOW response for most applications.

HOLD

Press the HOLD button “freeze” the current reading in the display. Press the button again to resume

normal operation.

HD600-EU-EN v1.3 07/13

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. The reading

displayed is the lowest reading encountered since the MIN mode was entered.

3. Press the MAX/MIN button again to exit the MAX / MIN display mode.

RECORDING DATA

The meter can store up to 20,000 readings at an interval rate of 1 to 59 seconds. Each recording

session is saved as a data set and each record is saved with a date and time stamp. This data can

be downloaded using the supplied software.

Setting the interval time

1. Press and hold the button while turning the meter ON. 0001 and Int will appear in the

display.

2. Press the LEVEL button to set the sample interval from once per second to once per 59

seconds.

3. Press the HOLD button to save the interval setting and exit the setting mode.

Recording readings

1. Press the REC button to begin recording. The REC icon will appear on the display.

2. Press the REC button again to stop recording.

3. Auto Power OFF is disabled when the record function is active.

Clearing Stored readings

1. Turn the meter OFF.

2. Press and hold the REC button while turning the meter ON.

3. When (clear) appears on the display, release the REC button.

4. All of the readings that were stored in memory are now erased.

BACKLIGHT

Press the button to turn the LCD backlight on or off. To conserve battery life, the backlight will

automatically turn off after approximately 30 seconds.

AUTO POWER OFF

The meter will automatically shut off after approximately 15 minutes of inactivity. Press the SETUP

button to disable the auto-power-off feature. The icon in the display indicates that the auto power

off feature is active.

HD600-EU-EN v1.3 07/13

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.

(1-AC 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: 100Ωapprox.

DC analog output

The DC output signal reflects the frequency weighting selected (‘A’ or ‘C’).

Output voltage: 10mV (±1mV) per displayed dB.

Output impedance: 1KΩapprox.

Calibration

Frequent calibration is recommended and is often required by noise

standards and directives.

1. Turn the meter ON

2. Put the meter in the ‘A’ weighting mode

3. Put the meter in the ‘SLOW’ response mode

4. Place the calibrator onto the microphone.

5. Turn the calibrator ON.

6. Adjust the meter’s CAL potentiometer located on the side panel

so that the meter’s display matches the output of the calibrator

(typically 94dB or 114dB).

Battery Replacement

1. The battery icon will appear on the display when the battery needs replacing.

2. Turn the meter OFF and slide the rear battery cover off.

3. Install the 9V battery and replace the cover.

You, as the end user, are legally bound (Battery ordinance) to return all used batteries

and accumulators; disposal in the household garbage is prohibited!

You can hand over your used batteries / accumulators at collection points in your

community or wherever batteries / accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the

end of its lifecycle

HD600-EU-EN v1.3 07/13

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. Turn the meter ON and press the SETUP button.

3. Launch the application program.

4. Select the COM port which has the CP210X driver installed.

5. Data will appear on the pc screen when communication is established.

Specifications

Applicable Standards IEC61672-1: 2002 Class 2; IEC60651: 1979 Type 2; ANSI S1.4:1983

Type 2,

Accuracy ±1.4dB (under reference conditions)

Frequency Range 31.5Hz to 8kHz

Dynamic Range 50dB

Frequency Weighting A and C

Time response Fast (125ms) and Slow (1 second)

Measurement Ranges 30 to 80dB, 50 to 100dB, 80 to 130dB and autoranging (30 to 130dB)

Memory 20,000 records with date and time

Microphone ½” electret condenser

Calibration Requires external calibrator

Display 4 digit LCD with bargraph and backlighting

Display update rate 2 times/second

Range indicators “OVER” and “UNDER” range indication

Battery life 30 hours (approximately)

Power supply One 9V battery (NEDA1604 or equivalent) or 12V/1A AC adaptor

Auto Power Off After approx. 15 minutes of inactivity with disable

Analog Outputs AC: 1Vrms full scale; Output impedance: 100Ω

DC: 10mV/1dB; Output impedance: 1kΩ

Operating conditions 32 to 104oF (0 to 40oC); 10% to 90% relative humidity

Storage conditions 14 to 140oF (-10 to 60oC); 10% to75% relative humidity

Dimensions 10.9 x 3 x 1.97” (278 x 76 x 50mm)

Weight 12.35 oz. (350g)

HD600-EU-EN v1.3 07/13

Typical A-Weighted Sound Levels

50HP Siren (100')

130

120

110

100

140

Jet takeoff (200')

dBA

Riveting machine

Chain saw

Subway (20') Boiler room

Pneumatic drill (50') Freight train (100')

Vacuum cleaner (10') Speech (1')

Large store Large Office

Small office Residence

Night residential area

Whisper (5'0) Sound studio

Threshold of hearing

Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

www.extech.com

Please visit our website for more information

www.alpine-components.co.uk

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