Linear Technology DC2218A Demo Manual page 2

DEMO MANUAL DC2218A
QUICK START PROCEDURE
How to Operate Pre-Programmed Patterns 0-6 (S1)
Demonstration circuit DC2218A is easy to set up to evalu-
ate the performance of the LT3965 matrix LED dimming
system and its pre-programmed patterns.
NOTE: The included DC2026C Linduino One is pre-
programmed to work with DC2218A. If the .ino code is
mistakenly changed or overwritten, new .ino code must
be uploaded from Linear's website.
NOTE: An acrylic shield has been assembled over the LEDs
to protect the user's eyes from extremely bright light. Please
make sure that the shield is in place and any necessary
protective eyewear is worn before looking directly at the
bright LEDs and their patterns.
Follow the procedure below:
1. Set the PATTERN SELECT rotary switch S1 to any posi-
tion between 0 and 6. Position 7 is reserved for use
with the GUI (graphical user interface).
2. Connect 12V power to either the EMIVIN and GND
banana jacks or to the J7 2.1mm (inside diameter)
barrel jack.
3. Observe the red LED indicator light (D32). When it
begins flashing, then the board is ready to start up.
4. When the red LED (D32) is flashing, push the Push to
Start button S3.
5. Observe the LED patterns and adjust the speed, bright-
ness and pattern of the LEDs with the manual blue
potentiometer R14.
2
6. Change the Pattern Select rotary switch to positions
0-6 to observe different patterns.
7. Press the Reset button S2 to start over again.
How to Operate with Graphical User Interface (GUI)
Demonstration circuit DC2218A can be connected with a
PC via USB cable and controlled with a GUI.
NOTE: The included DC2026C Linduino One is pre-
programmed to work with DC2218A and to interface with
the LT3965 GUI. If the .ino code is mistakenly changed
or overwritten, new .ino code must be uploaded from
Linear's website.
NOTE: An acrylic shield has been assembled over the LEDs
to protect the user's eyes from extremely bright light. Please
make sure that the shield is in place and any necessary
protective eyewear is worn before looking directly at the
bright LEDs and their patterns.
Follow the procedure below:
1. If never done before, download and install QuikEval™
from Linear's website under design tools and software
at http://www.linear.com/designtools/software/#Data
QuikEval is your link to receiving the latest LT3965 GUI
software and to run the GUI. Installation of QuikEval
properly initializes the serial port driver on the computer
to work with the Linduino One USB connection.
If QuikEval is already installed, skip step 1, or update
QuikEval to get the LT3965 GUI.
dc2218af