Matrix Orbital GLK24064-25 Legacy - Manual (Page 11)

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 the Figure below.
Figure 6: Five Volt Cable
Simply insert the splitter cable in series with a ’large’ power connector (i.e., one going to a hard drive)
and plug the small connector into the display module. The connector is ’keyed’ and will only fit one way.
NOTE The connector provided does not allow access to the middle two pins, which are
used for I 2 C communications. If this functionality is required, Matrix Orbital suggests
wiring a suitable connector.
2.1.3 Power Connection (DB-9 Connector)
The display can be powered via pin 9 on the DB-9 connector. No matter what voltage option the display
is +5Vdc may only be used through pin 9, as it bypasses any voltage regulator on the display. These modifi-
cations must be done. However, improper modifications will damage the display and will result in a void of
the Manufacturer’s Warranty.
For standard power displays, two modifications have to be done;
1. Remove the solder jumper from the bottom pad and solder the top one.
Figure 7: DB-9 Power Conversion
2. Solder the jumper in the ’red square’. It’s located right of the DB-9 connector, in the middle.
Matrix Orbital GLK24064-25 7