Matrix Orbital GLK240128-25 Legacy - Manual (Page 12)

Pin 2 Tx \ SDA (I 2 C data)
Pin 3 Rx \ SCL (I 2 C clock)
Pin 5 GND
Pin 9 PWR (Must solder Power Through DB-
9 Jumper. See table ?? on page ?? for
power requirements.)
Figure 12: RS-232 Pin-out
2.1.1 Power Through DB-9 Jumper
In order to provide power through pin 9 of the DB-9 Connector you must place a solder jumper on the
Power through DB-9 Jumper pictured in figure 13 below. The GLK240128-25 allows all voltage models to
use the power through DB-9 option, see table ?? on page ?? for display module voltage requirements.
Figure 13: Power Through DB-9 Jumper
Matrix Orbital GLK240128-25 7