Instruction manual

Instruction Manual Smart-Trak
®
50 Series
IM-50 Rev. A.2 14
do not have a serial port, use a serial to USB convertor (available at most consumer electronics
stores or from Sierra).
To minimize the potential for RF interference, it is recommended to shield these wires. If you
are making your own cabling, Sierra recommends you use wire that comes shielded. Solder one
end of the shield wire/casing to the DB-9 connector at one end of the wire, so as to allow the
collected interference to dump to earth ground.
Digital RS-232 Communication Connections To DB9 PC Serial Port
50 Series DB9 Pin Connections PC Serial Port DB9 Pin Connections
RS-232 Transmit, Pin 8, Purple DB-9 Pin#2
RS-232 Receive, Pin 9, Gray DB-9 Pin#3
RS-232 Ground, Pin 6, Green DB-9 Pin#5
NOTE:
Transmit and Receive may need to be reversed, depending in which type of
device or cable is connected. No damage will result, attempt communication after reversal.