Matrix Orbital LK162-12 Legacy - Manual (Page 10)

LK162-12 rev 4 10
PC wiring
Display module wiring
+5 V
+12 V
GND
GND
+12 V
Figure 2-5 Wiring for 12 volt modules
If you don't want to modify cable wiring yourself, Matrix Orbital can supply an adapter cable designed to
use with the display module when it's installed in a PC. The cable is wired as shown in Figure 2-6 below.
Figure 2-6 Twelve volt power cable
2.1.2 Power through the DB-9 Connector
The LK162-12 can be powered by pin #9 on the DB-9 connector. If power is applied here, power cannot be
applied to the other power connector. The input voltage for pin #9 can only be +5Vdc, even if the unit is
wide voltage. Not following these instructions can destroy the unit.
To use the DB-9 connector for power you will have to solder a jumper as show in the bellow image.