Matrix Orbital GLC24064 - Manual (Page 8)

• Selectable communication protocol, Serial at RS-232 or TTL Levels or I 2 C
• 5V - 20mA General Purpose Output
• 16 KB flash memory for fonts and bitmaps
• Lightning fast communication speeds, up to 115 kbps for RS-232 and 100 kbps for I
2 C
• Adjustable contrast and backlight brightness
• Extended temperature available for extreme environments of -20C to 70C
• Extended voltage and efficient power supply available
1.4 Connecting to a PC
The GLC24064 connects seamlessly to a PC and it is an excellent means of testing the functionality and
uploading new fonts and bitmaps. You will require a standard RS-232 9-pin serial cable such as the one
pictured in
figure 6 on the previous page , as well as a modified 5V power adapter such as the one pictured in
figure 3 on the preceding page .
In order to connect your display to a personal computer follow these easy instructions:
1. Plug the serial cable into the com port you wish to use.
2. Connect the modified 5V power adapter to a power lead from your PC power supply (you will have to
open your computer case).
3. Connect the serial cable to the DB-9 connector on the back of the display.
4. Connect the 5V power adapter to the 4-pin connector on the back of the display.
WARNING DO NOT use the standard floppy drive power connector,
as this will not provide you with the correct voltage and will damage the
display module.
Figure 8: PC vs Matrix Orbital Display Module Wiring
Matrix Orbital GLC24064 3