[TrevorW]

Originally Posted by acropolite

I would imagine he's referring to the cable between the adapter and his equipment. There aren't that many leads involved, some interfaces use as little as 3 (transmit data, recieve data and signal ground) for bothway comms. There are other handshaking leads RTS, CTS, CD, DTR, DSR (request to send, clear to send, carrier detect, Data set ready and data terminal ready) which are sometimes used.

The EQ6 Synscan interface only uses TX & RX data and signal ground. There's a diagram of the cable in appendix B of the Sysncan Manual.

Which colours what