General Tools and Instruments DSM403SD - Manual (Page 9)

Also be sure that the meter either is running on fresh batteries or is being powered by AC
through a 9VDC adapter.
1. To start automatic data logging, press the REC/ENTER button once. The top line of the
display will show the term “REC”. Pressing the LOGGER button at this point will make
“REC” flash and add the flashing term “LOGGER” at the top right of the display. This
indicates that the instrument is sampling measurements at the programmed rate and
storing the readings and their time stamps in memory.
2. To pause automatic data logging, press the LOGGER button once; this will make the
flashing term “LOGGER” disappear from the top right of the display and change the term
“REC” from flashing to constant. Pressing the LOGGER button again resumes automatic
data logging.
3. To end automatic data logging, press the REC/ENTER button and hold it for at least
two seconds. This will cause “REC” to disappear from the top line of the display.
4. To log data manually, set the sampling time to zero using Step 7 of the Setup
Instructions. Then press the REC/ENTER button once. The display will show the term
“REC” on the top line, a value in the middle, and below it the letter “P” on the left and a
number from 1 to 99 on the same line to the right. The number indicates the position on
the SD card that will be used to store manually logged data.
Now press the LOGGER button. This will cause the term “LOGGER” to briefly appear at the
upper right of the display. As in automatic data logging mode, in this mode the instrument is
storing measurements and their time stamps on the SD card.
In manual data logging mode, however, measurements are being stored continuously
(with a sampling time of zero), and their locations on the card can be changed.
5. To change the storage location of manually logged data, press the SET button once;
this will cause the “P” to disappear from the left side of the display and the value on its
line to begin flashing. Once the flashing begins, you can use the ▼ and ▲ buttons to
change the flashing value to any number between 1 and 99. Once you have chosen the
storage location, press the REC/ENTER button to save the setting. This will cause the
value to stop flashing and the “P” to return.
6. To end manual data logging, press the REC/ENTER button and hold it for at least three
seconds. This action will cause “REC” to disappear from the top line of the display.
TRANSFERRING DATA FROM THE SD CARD TO A COMPUTER
After automatic or manual data logging of measurements, remove the SD card from the
meter and plug it into your computer either directly (if it has an SD card slot) or through an
SD card reader.
Because the files containing time-stamped data logs have the file extension .xls, they open
in Microsoft’s Excel application. Figures 2 and 3 show two kinds of Excel presentations: a
data-only screen and a graphics-only screen.
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