
DSM-1X
Digital Sound Level Meter
Owner's Manual

Contents
1. Safety .......................................................................... 1
2. Applications and Features........................................... 2
3. Specifications ............................................................. 3
4. Meter Description ....................................................... 4
5. LCD Display Description ........................................... 5
6. Operation Instruction .................................................. 6
7. Calibration Procedure ................................................. 9
8. Basic Operation ........................................................ 10
9. Notes..........................................................................11
10. Accessories ............................................................. 12

1. 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.
◆ Environment conditions:
Altitude: up to 2000 meters
RH≤90%(Non-Condensation)
Operating Temperature: -20~60℃
◆ Maintenance
Repairs or servicing not covered in this manual should only be
performed by qualified personnel.
Wipe the unit with a dry soft cloth. Do not use abrasives or
solvents on this instrument.
◆ Safety Symbol
Comply with EMC

2. Applications and Features
This Sound Level Meter is designed to meet the measurement
requirements of safety Engineers, Health, Industrial safety offices
and sound quality control in various environments like factory,
school, construction, etc.
◆ Comply with IEC61672-1 CLASS2 Standard
◆ Max/Min/Data Hold
◆ Over range indication
◆ Under range indication
◆ A & C Weighting
◆ FAST & SLOW response