Extech HD600 Operating Manual

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. 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.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and
workmanship for three years from date of shipment (a six month limited warranty applies to sensors and
cables). If it should become necessary to return the instrument for service during or beyond the warranty
period, contact the Customer Service Department at [phone] ext. 210 for authorization or visit our
website www.extech.com for contact information. A Return Authorization (RA) number must be issued before
any product is returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects resulting from action of
the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair,
or unauthorized modification. Extech specifically disclaims any implied warranties or merchantability or fitness
for a specific purpose and will not be liable for any direct, indirect, incidental or consequential damages.
Extech's total liability is limited to repair or replacement of the product. The warranty set forth above is inclusive
and no other warranty, whether written or oral, is expressed or implied.

HD600 V1.2 8/07 2

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 V1.2 8/07 3