Icom Ci V Usb Interface Schematic Top __top__ Site

This document explains how to build a USB-to-Icom CI-V interface (PC ↔ Icom radio control bus), gives a recommended schematic, component values, wiring notes, and safety/EMC tips.

Before looking at the schematics, it is crucial to understand how CI-V works. icom ci v usb interface schematic top

CI-V requires an open-collector driver.

If you choose to etch your own PCB or build this on a prototyping perboard, . Keep all copper traces on the USB side at least 2mm away from all copper traces on the Radio side. Do not bridge the grounds under the optocouplers; keeping them separate is the entire purpose of an isolated schematic. Software Configuration This document explains how to build a USB-to-Icom

Before looking at the schematic, you must understand how Icom’s communication protocol works: If you choose to etch your own PCB

When searching for , many users are trying to repair a non-working interface. Here’s how the top-level schematic helps diagnose faults: