Epson MFJ-1278B manual Computer Baud Rate, Autobaud

MFJ-1278B MULTI-MODE	COMPUTER INTERFACING
Pin 3 Receive Data

The Receive Data pin is an output line from the MFJ-1278B on which the attached device receives data. The attached device is generally a computer or data terminal.

Pin 4 Request To Send

The Request To Send pin is an input line to the MFJ-1278B on which the attached device requests clearance to transmit data to the MFJ-1278B.

Pin 5 Clear To Send

The Clear To Send pin is an output from the MFJ-1278B signaling the attached device to send or refrain from sending data to the MFJ-1278B. This line is used for systems that require hardware flow control.

Pin 6 Data Set Ready

The Data Set Ready pin is an output from the MFJ-1278B telling the attached device that the MFJ-1278B is operational.

Pin 7 Signal Ground

The Signal Ground pin is the common or return path for all signals between the MFJ-1278B and the attached device.

Pin 8 Data Carrier Detect

The Data Carrier Detect pin is an output from the MFJ-1278B. As normally configured, DCD reflects the status of the CON LED: It is true when an AX.25 connection exists between your MFJ-1278B and another station; it is false when no connection exists. This configuration is useful when the MFJ-1278B is used with a telephone style Bulletin Board system. Since the AX.25 protocol connection, analogous to a modem signal on the telephone, indicates the presence of a user. Shorting pins 1 and 2 of JMP1 on the MFJ-1278B mother board will cause this output to always be true.

COMPUTER BAUD RATE

Autobaud

The MFJ-1278B performs an AUTOBAUD routine upon each power on cycle of the MFJ- 1278B. The AUTOBAUD command is user selectable. The AUTOBAUD command is defaulted to ON. When AUTOBAUD is ON, MFJ-1278B will attempt to synchronize itself