2.2.3 USB 3.0 port
This port is used to output the high speed IQ signal to host. The program
manual show the usage method.
2.2.4 USB-OTG port
This is a USB 2.0 standard port that supports OTG, and it's mainly used to
control dedicated accessories. It can also be converted to a ethernet port
using USB/RJ45 converter. Please refer to the program manual for details.
This port supports 5V@500mA output. Avoid short-circuiting this output
or pairing it with a load with a exceedingly large current.
2.2.5 KEY/DATA port
This 3.5mm port can be connected to telegraph key or automatic key to
transmit operations. It can also output control signals to control specialized
accessories like a T/R converter. This is the pin definition: