Matrix-orbital GLT240128 Legacy Manual de usuario Pagina 15

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2.2 Touchpad Interface Connector
The GLT240128 provides a Touchpad Interface Connector which allows for the touchpad to be interfaced
to the display. This connector should remain plugged in while the unit is in operation and should not be
tampered with in any way.
Figure 14: Touchpad Interface Connector
2.3 DB-9 Connector for Non-USB modules only
The GLT240128 provides a DB-9 Connector to readily interface with serial devices which use the
EIA232 standard signal levels of ±9V. 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.
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