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APPENDIX E: USING AUATC FOR RS-232 ACCESS 91
Appendix E: Using AUATC for RS-232 Access
Introduction to the AUATC
To use your Paragon II system to access a CPU or other device through an RS-232 port, attach
one of our RS-232 serial CIMs (product code AUATC) to the device’s serial port as described in
the first section of this Appendix. The AUATC is designed to emulate an ASCII terminal,
converting keyboard input to RS-232 data input and converting RS-232 data output for display on
a VGA monitor. This conversion allows any device that can be accessed by an ASCII terminal to
be operated with a user station attached to your Paragon system, across an end-to-end distance of
up to 1000 ft. (304 m) as opposed to the normal RS-232 maximum of 50 ft. (15 m).
Here are some of the AUATC’s useful features:
• It maintains eight pages of data in a circular buffer.
• In its Buffer Edit Mode, you can edit data, copy it, mark it, and/or resend it to the server or
other device.
• In its On Line Mode, you can operate the ASCII device as if it were attached to a text
terminal.
• It has twelve programmable keys for frequently performed character-string commands.
• You can directly attach a local PS/2 or Sun user station (keyboard and monitor) if necessary.
Installing the AUATC
Take these steps to attach an AUATC to the serial port of a server CPU or other device and to
your Paragon system:
1. Run an appropriate cable from the AUATC’s DB25 female DTE connector to the device’s
serial port. The type of cable will depend on what type of connector the port is and whether
it’s pinned as DTE (for a data source/destination such as a CPU) or DCE (for a data-
communicating device such as a modem). Here are the product codes of some cables we
recommend if the port is:
A. DB9 male DTE (most PCs, some routers, etc.)
B. DB25 male DTE (some older PCs, routers, etc.)
C. DB25 female DCE (many external modems, etc.)
If the device has some other type of serial port, call Raritan Technical Support.
2. If you need temporary “crash cart” access or permanent local control, you can attach a local
user station (consisting of a keyboard and VGA monitor only) to the AUATC. The user
station’s keyboard can be either be PS/2 or Sun type; a Sun keyboard will require a special
setting in the Setup Screen.
To install a local user station, plug a PS/2 keyboard into the AUATC’s 6-pin mini-DIN connector, or a
Sun keyboard into its 8-pin mini-DIN connector. Plug a VGA monitor into the AUATC’s HD15
connector.
Note: This local station will contend for keyboard control with the remote user stations attached
to Paragon User Stations based on a fixed one-second activity timeout. As soon as there has been
no keyboard activity from the local station for one second, a remote station can take keyboard
control, and vice versa.
3. Plug in and turn on the device. If possible, set it to communicate at 9600 bps, 8 data bits, no
parity, and 1 stop bit. (These don’t have to be the permanent serial settings, but the device
must be set this way to establish initial communication with the AUATC; later you can
configure both the device and the AUATC to better settings. If the device can’t be configured
for these settings, you’ll need to temporarily attach a CPU or other device that can be.)
4. Plug the AUATC’s power supply into the AUATC and a working AC outlet. If the AUATC
is installed and operating properly, the AUATC’s green LED will start blinking: once per
second while the CIM is idle, more quickly while it’s passing data in either direction.