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AR-210 Manual
Before you can perform the "Operational Test and Alignment", which follows in this section, you
will have to properly connect your AR-210 (thereafter called TNC) to a terminal or a computer and
run the proper terminal emulation program.
In addition, you will have to connect the TNC to you radio equipment, read and comply with the
following information that pertains to your situation under "Computer Connections", "Software Re-
quirements" and "Radio Connections".
If you use a computer you will need a terminal emulator or communications program such as Pro-
com, Procomm Plus or accessory terminal program that comes with MS Windows.
A sample terminal program supplied with the TNC can be used for the IBM PS/2, PC, XT, AT and
compatible computers running under MS DOS.
Since these programs allow a computer to operate like a terminal, the following information
will use the term "Computer" to refer to a computer or a terminal.
The TNC communicates with your computer through a serial port using signals that correspond to
the RS-232C standard. Most computers that are available today either incorporate an RS-232C
style serial port, or have one available as an accessory. If you have already been using your com-
puter with an RS-232C modem, you can use this TNC the same way.
COMPUTER CONNECTIONS
Table 1-1 shows the minimum connections that are required between the RS-232 I/O connector on
the rear of the TNC and your computer. These minimum connections do not permit hardware flow
control. DO NOT connect any wires other than pins 1 through 8 and 20 if your computer I/O is a
DB-25 style connector. Pins 17 through 19 and 21 through 25 are reserved for future use.
The supplied cable i for the IBM PS/2, AT and 100 % compatible computers with DB-9S asynchro-
nous communication port (serial port) connector.
You may also consider using a 9-to-25 pin adaptor for connecting to a 25-pin serial port computers
such as the IBM PC, XT and compatibles.
IMPORTANT: Whether you purchase a ready-made cable or make your own, make sure that it
is a SHIELDED cable.
It is beyond the scope of this manual to show you how to connect your TNC to every brand and
model of computer. It does however, provide you with information for several common computers.
If your particular computer is not listed, you can probably adapt the information that is presented
to suit your needs.
1. INSTALLATION
Pin Signal Name
2
Receive Data
Data from AR-210 to computer
3
Transmit Data Data from computer to AR-210
5
Signal Ground Common ground for both data lines
Description
Table 1-1
Page 6
1-1
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