Appendix A: Serial Port Configuration - Juniper Geode GNS3 User Manual

Geode GNS3 Real-Time Sub-Meter GPS Receiver
10. Appendix A: Serial Port
Configuration
The Geode has a 9-pin RS-232C serial port. This allows the
Geode to be mounted to a piece of equipment such as a
tractor or a precision planter. This type of configuration
maintains a constant connection for data and power to the
Geode. Use a straight-through 9-pin cable to establish
communication between the Geode and your mobile
device. The functions of each pin are listed below.
Pin
1 PPS output
2 TXD out
3 RXD in
4 Event Mkr in
5 GND
6 GPS Lock out
7
8 Speed Pulse out
9 +12V in
You can remotely power on and off the Geode through pin
9 of the serial connection. Apply or remove 12 V (nominal) to
cycle power on the Geode.
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Appendix A Serial Port Configuration
5 4
9
Signal
Normally low, pulsing high
High to mark
High indicates GPS lock
Normally low, pulsing high
3 2 1
8 7 6
Condition