108Functions to Use as NecessaryConnecting an external deviceUsing the provided PC connection cable “SCU-20” or another optional cable, thetransceiver can be connected to a personnel computer as a COM port for the followingoperations:• Transferring GPS location data and import route mapping information into thecomputer software• Updating the transceiver firmware• Packet communicationThe DATA jack on the rear side of the transceiver permits connecting external devicessuch as a computer. The pin assignment of the DATA jack is shown below.DATAjack➀ PKD (packet data input)➁ GND➂ PSK (PTT)➃ RX 9600 (9,600 bps packet data output)➄ RX 1200 (1,200 bps packet data output)➅ PK SQL (squelch control)➆ TXD (serial data output [transceiver → PC])➇ RXD (serial data input (transceiver ← PC])➈ CTS (data communication control)➉ RTS (data communication control)Connecting to a computer● Preparation• Computer• PC connection cable “SCU-20” (supplied)… When connecting to the USB jack of thecomputerTo the transceiverTo the computer(USB jack)Tips• Make sure to turn off the transceiver before connecting any cables.• When using the SCU-20 PC connection cable, install the designated driver on the computer.Download the driver and installation manual from the Yaesu website.
