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12. Auto Power OFF
The auto power off mode is always armed when the device is activated. The device will automatically deactivate after
30 minutes if no other buttons are pressed and if there is no RS-232 communication. The recording function does not
influence this feature.
Turn the device off and hold the FAST/SLOW button while pressing the ON/OFF button. The
longer displayed on the LCD because the auto power off function has been disabled.
13. Measurements
a. Open the battery cover and insert a 9V-battery in the battery compartment.
b. Activate the device and select the desired time weighting (FAST/SLOW) and frequency weighting (A or C). Use
FAST time weighting if the sound source consists of short bursts or if you only catch sound peaks. Use the SLOW
setting to measure average sound levels. Select A-weighting if you wish to measure the general noise level and
select C-weighting for measuring the acoustic sound level.
c. Select the desired range.
d. Hold the instrument in your hand or mount it on a stand and point the microphone at the suspected source of the
noise. The measured sound pressure level is displayed.
e. Press the MAX/MIN button to activate the MAX/MIN mode. The MAX value is now displayed. Press the button
again for the MIN value and press it a third time to display the current measurements. Press A/C to return to the
normal display mode. Hold MAX/MIN for three seconds to erase the MAX/MIN memory.
f. Deactivate the device and remove the battery when the DVM322DI is not in use.
14. Installing the Software for the RS-232 Interface
The package contains one CD and one custom-designed RS-232 TestLink cable. The software requires Windows
95, Windows 98, Windows NT 4.0 or above.
Minimum hardware requirements : PC or Notebook with Pentium 90MHz or higher, 32MB RAM, at least 5MB hard
disk space available to install TestLink. Recommended resolution 800 x 600.
Installing TestLink :
1. We recommend that you close all other applications before installing TestLink.
2. Insert the setup CD in the CD disk drive.
3. Choose the START button on the task bar and select RUN.
4. Enter "E:\SETUP" and choose OK. The file SE322.exe is copied to your hard disk (C:\program
files\TestLink/SE322).
Main Menu
File : open files or retrieve saved files
Save : save the active window.
Print : print the active window (graph or list)
Printer Setup : Select a printer
File │ Exit : terminates the TestLink program
View │ Control Panel : open this panel window to operate the meter through the screen buttons.
View │ Real-Time Graph : open the real-time graph to display the data currently being acquired by the device.
Real-Time Data │ Run : start collecting real-time data
Stop : stop collecting real-time data
DataLogger : open the Data Logger window to load data recorded with the DVM322DI
Output Tabular to Graph : Graphic display of a table with data
DVM322DI
5
indicator is no
GB
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