HD600 V1.2 8/07

2

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 (781) 890-7440 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.