Matrix Orbital LCD2041 - Manual (Page 11)

2 Hardware Information
Refer to the following diagram for this chapter:
1 DB-9 Connector 5 Power / Data Connector
2 Power Through DB9 Jumper 6 Legacy Connector Jumper
3 GPOs 7 Protocol Select Jumpers
4 Manual Override
Figure 12: LCD2041
2.1 DB-9 Connector
The LCD2041 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 LCD2041 7