User's Manual

Shenzhen Friendcom Technology Development Co., Ltd.
10
For data transmission test with GMSK modem, the jumper’s position need to be changed shown as
below.
4.2 Operation Instruction
Detailed instruction for channel and system configuration is described. Especially, in input channel data, data
input method for Rx,Tx frequency, Rx,Tx option such as CTCSS, DCS, scan and bandwidth is explained
specifically. In addition, system option such as selection of squelch type, data value setting for power saving
mode, Tx time out time, scan option and modem speed is detailed.
4.2.1 Overall View
Pin 6 (BUSY) and Pin 8 (Switch) of DB15 connector work as TX end and RX end of simulated serial port for
data transmission in the first 2 minutes after the radio power on. The CON port is with characteristics of
9600bps, 8N1, TTL. If no valid command is sent from PC, the port will be disabled from serial simulation
function and return to normal BUSY and Switch function.
Initially, click on the shortcut of PC software and then the following window shows up.