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Bluetooth wireless data transmission
During use the Bluetooth wireless data transmission can be started by
pressing the top right button, which is the Bluetooth activation button. A
Blue LED situated top right starts blinking and stays lit during Bluetooth
listening. For first time use the device needs to be linked to the receiving
device. The pairing code is 0000. On the embedded microSD card a
program called DTI-2 Streaming Data Viewer is available, which can
visualize the transmitted data on a Windows computer. Connect the
DTI-2 to the computer with the USB cable to mount the microSD card as
a directory, and run setup to install the program.
Event marker
During use events can be marked into the database using the lower left
button, which is the Event marker button. Both rows of LEDs light up to
indicate that an event marker has been recorded into the database.
Status button
During use the current skin conductance and skin temperature status can
be visualized by means of the two LED arrays using lower right button,
which is the status button. The left array shows the skin temperature: all
LEDs on means 38 degrees Celsius. The decrement is 1 degree per
LED, so one LED lit means 31 degrees Celsius. The right array shows
the skin conductance normalized to the average of the last minute
(3LEDs on). Per increment of 1%, a LED switches on or off. This allows a
visualization of the recent skin conductance changes.
Time synchronization
The DTI-2 can keep track of time and date. In active mode and in sleep
mode the internal real time clock takes care of this. All measured sensor
data is time stamped and stored in a data file on the microSD card.
Before active use of the DTI-2 it needs to be synchronized with a
Windows 7 PC to ensure accurate time stamping.
Two methods are available for synchronization:
1) Connect the DTI-2 to a PC the USB cable. In the DTI2-0XXX drive
(XXX being the serial number of the DTI-2) double click
CreateDTITIME.bat to create a file named DTITime.txt. Unhook the
device immediately after writing and switch it on. The creation
time/date of the DTITime.txt file is used as synchronization time.
CAUTION: the latency between the creation time/date of the
DTITime.txt file and switching on the DTI-2 is not taken into
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