Epson manual MFJ-1278B MULTI-MODE Appendix E Converting to TNC-2

MFJ-1278B MULTI-MODE APPENDIX E CONVERTING TO TNC-2

3.Construct Header U28 by connecting pins 2, 5, 6, 12, 15 and 19 to ground pin 10. Connect pins 9 and 16 to +5 Volts at pin 20. See Figure E-2 below.

Fig. E-2: Header U28

4.Remove U27 on the MFJ-1278B PC board and replace it with Header U27.

5.Remove U28 on the MFJ-1278B PC board and replace it with Header U28.

6.Set the terminal program parameters as specified by the NET/ROM documentation.

Upon power on the MFJ-1278B should signed on like a TNC 2 and it is ready to operate NET/ROM or other TNC 2 firmwares.