User's Manual

Table Of Contents
Specifications
GMS-2 Operator’s Manual
B-6
Connector Specifications
The GMS-2 has one antenna connector for radio transmission/
reception and three port connectors for power and data upload/
download.
Serial Connector
The serial connector (Figure B-1) is a sealed receptacle, 5 pin, port.
Figure B-1. Serial RS232 Connector
Table B-3 gives the serial port’s pin specifications.
Table B-3. Serial Pin Specifications
Number Signal Name Dir Details
1 TXD O Clear to send
2 RXD I Request to send
3 GND - Signal ground
4 GND - Signal ground
5 Not used