Epson FX-286e, FX-86e E, #8143, #8145, #8148, Installing an Interface, Identifying a serial interface board, Choosing and Setting Up Optional Interfaces

Table E-2. Serial interface

	#8143	#8145	#8148
X-on/X-off control	yes	no	yes
Self test	no	loopback	loopback/
			line monitor
Built-in data buffer	none	2K	218K

X-on/X-off protocol is a system in which the printer transmits a code to the computer to indicate that it cannot accept more data, and a second code when it is once more ready.

The loopback self test mode allows direct testing of the functions of the interface without connecting a computer; line monitor mode is rather like the FX data dump mode.

Identifying a serial interface board

All Epson interfaces have the EPSON name printed on them. If the board has an identification code printed on it, it will be a four digit number beginning with an eight. The number should be one of the numbers in Table E-3.

If the board has no identification code, or if you are unsure whether the number you have located is the correct code, check the number of DIP switches’ on the board against Table E-3.

Table E-3. Number of DIP switches

Installing an Interface

Before installing an interface, you must remove the printer’s cover.

Choosing and Setting Up Optional Interfaces E - 3