The Interface Boards

A number of optional interfaces are available that supplement the capabilities of your printer’s built-in parallel interface.

Choosing an Interface

Optional interfaces can be divided into four main categories which are described briefly below.

Serial interfaces are required if your computer is not equipped with a parallel interface or if you need an interface that conforms to the Current Loop standard instead of RS-232C. These interfaces also provide some combination of the following features: X-ON/X-OFF data communication protocol, loopback self test modes, and data buffers that increase the printer’s data buffering capacity by 8 KB.

IEEE-488 interfaces offer standardized connections, trouble-free operation, and the ability to connect computers, printers, and other devices on the same line so that they may share data freely.

Third-party interfaces, such as Coax and Twinax, allow Epson printers to function as local IBM printers without the addition of any other circuitry or components.

The buffered parallel interfaces also offer trouble-free operation and standardized connections. They provide the printer with more memory to free the computer for other tasks when printing large amounts of text or graphics. You can increase the printer’s data buffering capacity by an additional 32 KB (about 10 pages).

If you are not sure whether you need an optional interface or would like to know more about interfaces, contact your dealer or call the Consumer Information number listed in Where to Get Help.

Using the Printer Options 5-37