Epson MFJ-1278B manual J5 Pin # Pin Function

MFJ-1278B MULTI-MODE HARDWARE

TTL INTERFACE PORT PIN FUNCTION,J5

The MFJ-1278B provides the user with a TTL level I/O port, J5. The TTL level I/O port, J5 is compatible with computers and terminals that do not support RS-232C serial voltage levels, such as the Commodore C64 and C128 computers. Voltage levels of 0 and 5 VDC are available at J5. Below in Table 8-3 is the pin out of the TTL level I/O port, J5:

Table 8-3TTL Port, J5 Pin Out

J5 Pin #	Pin Function
1	Receive Data
2	Data Carrier Detect
3	Ground
4	Request to Send
5	Transmit Data
6	Data Set Ready
7	Clear to Send
8	Frequency Shift Keying
9	Space Output for Scope
10	Mark Output for Scope