Matrix Orbital LK204-24-USB - Manual (Page 6)

1.3 Keypad Interface
The keypad interface takes row / column input and converts it it ASCII characters, which are delivered
out the USB port to the associated controller.
NOTE The keypad is not used to directly control any aspect of the operation of the
display. The display acts simply as a matrix to serial converter.
1.4 Setup for Testing
Before setting up the application, it is best to test out the display. This is easily done with a PC.
The following is a list of requirements for testing;
•
An available powered USB source
•
USB Drivers which can be located on Matrix Orbital’s website and e-CD
•
Test software such as Alpha Demo or Display Tuner
Figure 1: Connections for Testing
Once the above test requirements have been met, the user may proceed with the following steps;
1. Refer to the diagram above for the following steps.
2. Download or copy the USB drivers into a directory.
3. Uncompress the files. They will be a self extracting ZIP file.
4. Connect the USB cable to the display and the computer.
5. Windows will give a prompt for drivers for a USB ⇔ Serial Device.
6. Select “Specify location”, and navigate to the directory the file was uncompressed to.
7. Test the display.
Matrix Orbital LK204-24-USB 2