Step 3:
Configure the X16-1D by editing the appropriate tags in the config.txt file using a
simple text editor. In Windows, do not use Notepad as the editor does not terminate new
lines properly. GCDC recommends Windows Wordpad or + to edit the
config.txt file. Refer to section 2.6 for a complete list of configuration options.
Step 4:
If necessary, initialize the RTC clock by creating a time.txt file (see section 2.4). Once
the time.txt file is saved, immediately unplug the logger to start the initialization
process. The logger will load the time.txt file, initialize the clock, and delete the time.txt
file. Initializing the RTC ensures the data files include the correct year, month, and day
and that the data samples can be correlated to a specific date and time.
Step 5:
After removing from the USB port, attach the X16-1D logger to the target object. The
logger is small and light weight so double-sided tape, Velcro, or a spot of cyanoacrylate
glue are sufficient methods of attachment.
Step 6:
Press the on/off button located at the rear of the enclosure to initiate data recording, (see
Figure 9). Logging will start about 3-5 seconds after pressing the button. The red LED
will blink as the configuration file is accessed. If the time.txt file is present, the RTC is
initialized with the time written in the file. Then, the blue LED will begin to blink at a 1
second interval indicating the system is operating. The red LED will blink periodically
as data is written to the microSD card.
Gulf Coast Data Concepts
Page 6
X16-1D, Rev B
Figure 8: Editing Config.txt File
The X16-1D is small and light weight so attachment methods do not need to be
substantial. Double-sided tape, a spot of cyanoacrylate glue (contact cement), zip-ties,
magnetic base, or adhesive putty are example methods of attachment. These methods do
not cause adverse signal attenuation considering the relatively low frequency bandwidth
of the X16-1D logger. Command Poster Adhesive strips by 3M offer excellent temporary
attachment of the logger to most surfaces.
