The basic function of the interface is voltage level conversion from the RS-232 levels used in a standard serial port (+12 and -12 VDC) and the TTL levels used by your transceiver's CI-V bus (+5, and 0 VDC). Thus an external interface between your Computer and your transceiver's CI-V jack is required. Connecting an Icom Transceiver to your PCĬomputer control of the IC-7100, IC-7200, IC-7300, IC-7410, IC-7600, IC-7610, IC-7700, IC-7850, IC-7851, IC-9100, and IC-9700 is accomplished with a simple USB transceiver-to-computer connection.Ĭomputer control of older Icom transceivers is accomplished via a bidirectional CI-V bus, which uses an asynchronous protocol communicated via TTL voltage levels.
