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

1 DB-9 Connector 5 Power / Data Connector
2 Power Through DB9 Jumper 6 Legacy Connector Jumper
3 Manual Override 7 Protocol Select Jumpers
4 Keypad Interface Connector 8 Filesystem Lock Jumper
Figure 11: GLK24064-25
2.1 DB-9 Connector
The GLK24064-25 provides a DB-9 Connector to readily interface with serial devices which use the
EIA232 standard signal levels of ±12V to ±12V. It is also possible to communicate at TTL levels of 0 to
+5V by setting the Protocol Select Jumpers to TTL. As an added feature it is also possible to apply power
through pin 9 of the DB-9 Connector in order to reduce cable clutter. However, in order to accomplish this
you must set the Power Through DB-9 Jumper.
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 GLK24064-25 allows all voltage models to
Matrix Orbital GLK24064-25 6