MFJ-1270C/1274C MANUAL BASIC OPERATION
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Parity and Word Length
If you are using one of the optional starter packs by MFJ Enterprises, Inc. then
you should follow the instructions given by the terminal program documentation
with the starter pack. If you are not using the MFJ starter pack then you should
use the following instructions to set the parity and word length for the MFJ
TNC.
If messages from the MFJ TNC appear garbled, with incorrectly displayed
characters, you may need to change the MFJ TNC 's serial port parity and word
length. (We assume that you have set the baud rate correctly. See Chapter 2 if
the baud rate needs to be changed.) The MFJ TNC 's default value is 8 bits and
no parity. If your computer receives 8 bits as data, you may have to set space
parity, since text may otherwise be interpreted as graphics or other special
characters. To set 8 bits, no parity, use the following combination:
AWLEN 8 (8-bit words)
PARITY 0 (no parity bit)
For wordlength of 7 bits, even parity, set
AWLEN 7 (7-bit words)
PARITY 3 (even parity)
One of these combinations will satisfy most computers. You are more likely to
require a different setting if you have a terminal rather than a computer, or if you
have configured your terminal port for some special application.
If your computer requires odd parity, set PARITY 1. If your computer detects
framing errors, try setting
AWLEN 7 (7-bit words)
PARITY 0 (no parity bit)
for shorter characters. For longer characters, set:
AWLEN 8 (8-bit words)
PARITY 1 or PARITY 3
Echos
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