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AR-210 Manual
This is not intended to be an exhaustive description of every command, but rather a discussion
about how the various commands are related and how you may use them. An alphabetical catalog
of commands that describes the format and parameter of each is provided in the document file in
the attached diskette. Refer to section 4. "COMMANDS AND MESSAGES" of this manual to access
the disk file.
TERMINAL CHARACTERISTICS
Baud Rate Selection – Most terminal use serial communications. In this mode, each 7- or 8-bit
character is sent in sequence over the same wire. Serial data must be transmitted at a predeter-
mined bit-per-second rate called baud rate. there are many standard baud rates. Unless the TNC
and the terminal use the same baud rate, they will not be able to communicate. This TNC supports
the following standard baud rates: 300, 600, 1200, 2400, 4800, 9600 and 19.200.
Word Length/Parity/Stop Bits – In addition to the data rate, there are three other characteris-
tics of serial data which should be the same of TNC and the terminal. These are word length, par-
ity and number of stop bits. Use the commands
Serial data may represent ASCII data, which has seven data bits per character, or binary data,
which has eight data bits per byte. Unless you operate in the Transparent Mode, the TNC will ig-
nore the extra bit if you use 8-bit characters. This means that the eight bit is set to 0 before data
is assembled into a packet.
If you change any of these configurations, the new values do not take effect until you perform a
reset by turning the power off, or type
I you start the TNC in the default-parameter mode, the serial port is initialized at 1200 baud, even
parity, 7-bit characters and one stop bit. A message is then typed at 1200 baud.
GETTING STARTED
After you have your TNC and terminal set up properly, you should see the TNC sign on with a mes-
sage, followed by the command prompt:
cmd:
When you see this prompt, first set your call sign. To do this, type
below:
cmd: MY W6YEY[ ]
A lithium battery inside the TNC enables it to remember any changes you make in the default pa-
rameters.
Once you set your call sign, you are ready to send a packet. First type the command
press [
] to enter the converse mode. Then type a message you wish to transmit as a packet:
THIS IS A TEST!
Press the [
] key to end your message. If you watch the LEDs on the front of the TNC when you
do this, you should observe the following:
AWLEN
and
RESTART
.
Page 18
PARITY
to set these characteristics.
MY
and you call sign as shown
3-3
CONVERS
and
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