Epson FX-850 User Manual - Page 128
Compatible interfaces, Removing the upper case, FX-850 - serial interface
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l Serial interfaces are necessary 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 the RS-232C. In addition, all available serial interface boards provide user-selectable baud rates and data word structures. These interfaces also offer 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 buffering capacity to either 32 Kbytes or 128 Kbytes. If you are still unsure whether you need an optional interface, or would like to know more about interfaces, contact your Epson dealer. Compatible interfaces The Epson interfaces that are compatible with the FX-850 and FX-1050 are listed below. Interface number Name #8143 #8148 #8149 #8165 #8172 RS232C/current loop interface Intelligent serial interface 32Kbyte buffer serial interface Intelligent IEEE-488 interface 32 Kbyte buffer parallel interface Removing the upper case Before installing an optional interface board, you must remove the upper case. This is easy to do; the only tool you need is a Phillips screwdriver. Follow the instructions below: 1. Turn off both the printer and the computer, unplug the printer from the electrical outlet, and disconnect the parallel cable from the printer and computer. Using Printer Options 7-23