Use and Care Manual

ManualsBrandsGeneral Tools ManualsElectricalData Logger USB Digital Sound Level

showing through the small square hole in the rear of the unit.

Push back the cover, insert a fresh battery in the correct

orientation, and replace the cover, pushing it forward until you

feel and hear a click.

Note: If the battery is removed from a unit before it has been

set up from software or while it is recording, the unit must be

reconfigured before it can be reactivated. If it is not

reconfigured, the unit will remain in standby mode.

Replacement “1/2 AA” batteries are available from General.

To order, visit www.generaltools.com, click through the right

image to the Instruments home page, and enter “BA10” in the

SEARCH box.

SOFTWARE, DRIVERS, CONFIGURATION

Please refer to the software manual on the CD for installation,

configuration and operating instructions.

OPERATING INSTRUCTIONS

DEPLOY THE UNIT

The DSM20 is particularly easy to deploy on a job site

because the unit does not need to be plugged into a computer

to be activated (ready to start logging data). The DSM20—

with its protective cap on—can be deployed either by laying

it on a horizontal surface or by mounting it onto the stand

provided.

BUTTON FUNCTIONS

To turn on the device, press and hold the unlabeled yellow

Function button (Fig. 1, Callout B) for 3 seconds. If the device

has not yet been activated, this operation will activate the

device and the LCD will display

Log

. If the device is already

activated, this operation will deactivate the logger and the

LCD will display

Con

. If the memory is full, the LCD will

WHAT’S IN THE PACKAGE

The DSM20 comes in a blister pack containing:

• The instrument (with included “1/2 AA” battery)

• A disc with software drivers for Windows

7 or

Windows

XP computers, a program for capturing data

logs and displaying them as curves, a software installation

and operation manual, a PDF of this user’s manual

• A stand to mount the instrument

• A USB extension cord

• A hard copy of this user’s manual (inside the fold-over card)

PRODUCT OVERVIEW

Fig. 1 shows the main components, controls, display and

connectors of the DSM20. Familiarize yourself with their

names and functions before

moving on to the Setup

Instructions.

A. Microphone

B. Function button

C. LCD

D. Protective cap

E. Full-size USB plug

SETUP INSTRUCTIONS

INSTALL THE BATTERY

The DSM20 uses a 3.6VDC “1/2 AA” Lithium-ion battery

(included).

To open the battery compartment

, use a

screwdriver with a fine point to push in the silver flange

Fig. 1