Connecting Serial Devices To The Smartone - Globalstar SmartOne Solar User Manual

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5. Connecting Serial Devices to the SmartOne

The SmartOne accepts a serial connection at 3 volt levels (Max), at 9600 baud. The relevant pins are TX,
RX, Handshake and ground. The SmartOne can connect with devices that contain an asynchronous
UART at 3 volt levels. (High State: 2.7-3 Volts, Low State: 0 Volts. Please contact Globalstar Support for
more information).
CAUTION: NEVER attempt to connect the SmartOne directly to the pins on a computer's RS232 or
USB port. The voltages in RS232/USB are too high and can damage the SmartOne.
Any deviations from the above guidelines will violate all RMA requirements and prevent any no-cost
replacement.
Note: See Appendix K for information on the External Input Cables for the SmartOne.
SmartOne Solar™ User Guide v1.0.3
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