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1 db-9 connector – Matrix Orbital GLK240128-25 Legacy User Manual

Page 11

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1

DB-9 Connector

4

Keypad Interface Connector

2

Power Through DB9 Jumper

5

Power / Data Connector

3

Manual Override

6

File System Lock Jumper

Figure 11: GLK240128-25

2.1

DB-9 Connector

The GLK240128-25 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.

Matrix Orbital

GLK240128-25

6