Icom Ci V Usb Interface Schematic Top ((top)) 〈720p〉

USB TTL TxD ---- 10k ----- Base of NPN Emitter - GND Collector ---- 1N4148 ---- CI-V data line | +--- 4.7k pull-up to 5V CI-V data line ---------------------------------------------- USB TTL RxD (with internal pull-up enabled)

: Used on the USB power line and radio data lines to block RF interference and noise. Isolation Transformers icom ci v usb interface schematic top

: A USB Type-B or Micro-USB jack connects to the host computer. USB-to-Serial Chip : The (or similar chips like the USB TTL TxD ---- 10k ----- Base of