MFJ-1278B MULTI-MODE COMPUTER INTERFACING
VERIFYING SERIAL PORT OPERATION
Now that you have a terminal program and the connecting cable for attaching the MFJ-1278B
to your computer, you are ready to verify that the MFJ-1278B will communicate with your
computer.
1. Turn on your computer. Load and run the terminal program.
2. Set the parameter of the terminal program as follow:
Word Length 8 bits
Duplex Full
Parity None
Stop Bits 1
Baud Rate 300, 1200, 2400, 4800, 9600, or 19,200
3. Turn on your MFJ-1278B, and note that the PWR, STA and CON LEDs are lit.
4. If the MFJ-1278B terminal parameters match your terminal program parameter, the
MFJ-1278B will sign on and the STA and CON LEDs will extinguish. If not, you will
see an asterisk (*) or other meaningless characters on the screen at this time. This is
because the MFJ-1278B has not been set to match the parameter of your terminal
program. You will need to execute the AUTOBAUD routine.
5. Execute the AUTOBAUD routine by pressing the RETURN key few times in
succession on your computer. The MFJ-1278B will execute the AUTOBAUD routine
and set itself to the terminal program parameter. Your computer screen will display the
sign-on message:
*:J
bbRAM:LOAD WITH DEFAULTS
|A
MFJ ENTERPRISES, INC.
MODEL MFJ-1278B
AX.25 LEVEL 2 VERSION 2.0
RELEASE XXXXX (date) - 32K RAM
CHECKSUM XXX
cmd:
After the sign-on message the STA and CON on the MFJ-1278B will extinguish. If the sign-
on message fails to appear, you should check the connecting cable between and the computer
and the MFJ-1278B. When you can successfully read the sign-on message from the MFJ-
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