1-1 Liquid-crystal display
1-2 POWER/ESC button
1-3 HOLD/NEXT button
1-4 REC/ENTER button
1-5
▲
button
1-6
▼
button
1-7 SET button
1-8 LOGGER button
1-9 Microphone
1-10 AC output terminal
1-11 Calibration screw
1-12 RS-232 output jack
1-13 Socket for 9VDC AC
adapter
1-14 Tripod attachment nut
1-15 Battery compartment
cover screws
1-16 Kickstand
1-17 Battery compartment
cover
1-18 SD card socket
TOP
RIGHT
SIDE
BACK
BOTTOM
FRONT
4
OPERATING INSTRUCTIONS
WHAT’S IN THE CASE
The DSM403SD comes fully assembled in a hard carrying case along with a sound wind
shield ball, a 2 GB SD memory card and this user’s manual.
Optional accessories available from General Tools & Instruments include a 94 dB or 94/114
dB sound calibrator and a 9VDC adapter for a 110V power supply. See the Optional
Accessories section of this manual for more details.
Figure 1 shows all of the controls and indicators on the front, right side, back and bottom of
the DSM403SD. Familiarize yourself with the positions and functions of these controls,
indicators and connectors before moving on to the setup procedure.
Fig. 1. The DSM403SD’s controls and indicators and other physical features
