Digi AccelePort Xem Manual

91000741 A
3. Attach power supplies to all Modem/Xem modules, and the
PORTS/Xem modules that need auxiliary power, and then plug power
supplies into AC receptacles.
Turn on power to Modem/Xem modules using the power switch on
the left side of the module. (PORTS/Xem modules do not have a
power switch.)
Step Four: (Modem/Xem only) Set the speaker
control
Each Modem/Xem module has an internal speaker which will provide
audio output for any one of the modem ports in the module. You can
select the modem port that is to be connected to the speaker or select not
to use the speaker, via a DIP switch on the rear of the unit.
See the hardware information that came with your Modem/Xem for the
switch settings to use.
There is a speaker volume control on the left side of the module.
Step Five: Install peripheral cabling
Modem/Xem
Use standard RJ-11C telephone cables to connect Modem/Xem modules
to the telephone lines. Connect to analog telephone circuits only. Never
connect a modem module to a digital wall jack. Note that internal tele-
phone systems (such as a PBX, Private Branch Exchange), may be digi-
tal.
Also, the Modem/Xem modules are to be used only with public access
phone lines. Leased line operation is not supported.
Most phone systems are “loop start” but some are “ground start.” The
Modem/Xem will not operate with “ground start” phone systems.
PORTS/Xem
You can connect printers, terminals, modems (or any other standard EIA-
232 device to be controlled by applications on the computer) to the
PORTS/Xem modules. The cable connector on the peripheral end
depends on the requirements of the peripheral. The PORTS/Xem end of
the cable must fit either an RJ-45 or DB-25 connector, depending on the
module option you have.
The pin assignments for each type of PORTS/Xem connector are shown
on the back.
Refer to the CD-ROM for more detailed cabling information.
What Next?
At this point the hardware installation for your PORTS/Xem or
Modem/Xem system is complete. However, since the adapter must have
software downloaded to its internal RAM before it becomes functional,
you must next install the software driver for your operating system.
• Read the instruction booklet for the CD-ROM that came with your
Xem system for instructions on installing software.
• View the on-line documentation on the CD-ROM for more informa-
tion about AccelePort products.
The Digi logo and AccelePort are registered trademarks of Digi International. Xem,
PORTS/Xem, PORTS/8em, PORTS/16em, Modem/4em, Modem 8/em, and Modem/Xem
are trademarks of Digi International. All other brand and product names are trademarks of
their respective holders.
© Digi International Inc., 1998; All Rights Reserved; http://www.dgii.com
Information in this document is subject to change without notice and does not represent a
commitment on the part of Digi International.
Digi provides this document “as is”, without warranty of any kind, either expressed or
implied, including, but not limited to, the implied warranties of fitness or merchantability
for a particular purpose. Digi may make improvements and/or changes in this manual or in
the product(s) and/or the program(s) described in this manual at any time.
This product could include technical inaccuracies or typographical errors. Changes are peri-
odically made to the information herein; these changes may be incorporated in new editions
of the publication.
AccelePort Xem System
Xem ISA Host Adapter
PORTS/8em, PORTS/16em Modules
Modem/4em, Modem/8em Modules
Hardware
Installation Guide
Introduction
An AccelePort®Xem™system consists of an Xem adapter coupled with
PORTS/Xem™modules (PORTS/8em™and PORTS/16em™) and/or
Modem/Xem™modules (Modem/4em™and Modem/8em™). The
PORTS/Xem modules easily expand the number of EIA-232 ports on
your computer, allowing you to cable additional peripheral devices such
as printers, terminals or modems to your computer. Modem/Xem mod-
ules contain either four or eight modems.
The Xem adapter can support up to four modules. Multiple modules of
either type can be linked in a chain to expand the number of EIA-232
ports and/or modems available.
Figure 1. Example setup
This installation guide describes how to plan your Xem system setup and
install the adapter and module hardware.
DB-25 Pin assignments RJ-45 Pin Assignment
Signal Description Pin Signal Description Pin
GND Chassis Ground 1* RI Ring Indicator 1
TxD Transmitted Data 2 DSR Data Set Ready 2†
RxD Received Data 3 RTS Request To Send 3
RTS Request To Send 4 GND Chassis Ground 4
CTS Clear To Send 5 TxD Transmitted Data 5
DSR Data Set Ready 6 RxD Received Data 6
SG Signal Ground 7 SG Signal Ground 7
DCD Data Carrier
Detect 8 CTS Clear To Send 8
DTR Data Terminal
Ready 20 DTR Data Terminal Ready 9
RI Ring Indicator 22 DCD Data Carrier
Detect 10
* Chassis Ground is also available
on the connector shell
† Pin 2 can be configured for DCD
(through Digi software) if you want
to connect using an 8 pin
connector

Step One: Plan your setup
An AccelePort Xem system can be set up in a variety of ways. Before you
start your installation, be sure of the following:
Number and type of components. Each Xem host adapter has an EBI
bus onto which you can cable up to four modules (of just one type or
combined PORTS/Xem and Modem/Xem).
Location of components. The first module on the EBI bus can be
located up to five feet from the adapter (the length of the cable that
comes with the system). Additional modules can then be stacked on
top of the first module using the shorter cables provided with the add-
on modules.
Note: The cumulative length of cable from the Xem adapter to the
last module should not exceed ten feet.
To remain in compliance with emissions standards, you must use the
cables that come with the product; the EBI cables cannot be extended.
Peripheral cabling. Before beginning the installation, be sure that you
have the cables that you will need for the peripherals that you will be
attaching to the modules. PORTS/Xem modules are available with
either RJ-45 or DB-25 connectors for peripheral cabling.
Modem/Xem modules accommodate modular phone line connectors.
You will need to be sure that you have cables of the correct length
and with the right connectors to properly attach the devices you want
to use with each module.
Power requirements. The first two PORTS/Xem modules can obtain
power from the EBI bus. However, as you add PORTS/Xem modules
to the EBI bus you must evaluate whether an auxiliary power supply
will be necessary for the additional modules.
In general, the third and fourth PORTS/Xem modules on the EBI bus
will require auxiliary power.
Note: If there is sufficient power for the module, the LED indica-
tor on the side panel of the PORTS/Xem module will light.
Each Modem/Xem module requires its own power supply.
Before proceeding with the installation, you should determine if there
is a need for auxiliary power supplies (available for purchase from
Digi) and also determine that adequate power is available where mod-
ules will be installed.
Additional information about the Xem system, such as specifications and
cabling details, is provided on the CD-ROM that is packaged with the
host adapter.
Step Two: Install the Xem ISA adapter
Before installing the Xem adapter, you should do the following:
• Check system resources for a free I/O port address. The Xem adapter
uses four bytes of address space on the I/O bus of the computer into
which you are installing it.
• Wear an ESD wrist strap to ground yourself while handling the
adapter. If one is not available, discharge static electricity from your
body by touching an unpainted metal surface, such as the computer’s
chassis, prior to handling the adapter.
• Record the adapter serial number, which will enable Digi to provide
you with better service, shouldthe need arise. The serial number label
has this general format: S/N: (S) XXX XXXXX
• Unplug power from the PC.
Figure 2. Xem ISA adapter
1. Set the I/O port address of the adapter to one of the following
addresses using the DIP switch at the location indicated in Figure 2:
2. Remove the computer’s cover.
3. Locate an available ISA slot in your computer and remove the slot
plate.
4. Insert the adapter into the slot and screw the endplate to the computer
chassis. The endplate must be screwed into the computer chassis to
remain in compliance with Part 15 of FCC rules.
5. Replace the computer’s cover.
6. Attach one end of the EBI cable to the connector on the adapter.
Note: Do not power on the host system yet.
Step Three: Install modules
During this step (and whenever EBI cables are attached or removed from
the modules) the host system must be turned OFF and power must not be
applied to the modules.
1. Position modules at the location you have prepared according to the
plan you developed in Step One.
2. Attach the cable from the adapter to the connector labelled EBI IN on
the first PORTS/Xem or Modem/Xem module that is to be connected.
Figure 3. Side Panel of PORTS/Xem module
.
Figure 4. Side Panel of Modem/Xem module
If you are cabling multiple modules together, attach a daisy-chain
cable to the EBI OUT connector of the first module. Connect the other
end to the EBI IN connector of the second module. Continue cabling
until all modules in the string are cabled.
I/O
address 1234
104-107h up up down down
114-117h up down up down
124-127h up down down down
204-207h down up up down
224-227h down up down down
304-307h down down up down
324-327h down down down down