ICS Advent DUAL232/AT Series User manual

DUAL232/AT Series
Product Manual
MANUAL NUMBER : 00750-010-3D

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FOREWORD
This product manual provides information to install, operate and or program the referenced product(s)
manufactured or distributed by ICS Advent. The following pages contain information regarding the
warranty and repair policies.
Check our Web site (www.icsadvent.com) for technical information, manuals, and BIOS updates.
Technical assistance is also available at: 800-480-0044 (U.S.) or 858-677-0877 (international).
Customer Comments: If you experience any problems with this manual or just want to provide some
feedback, please send us a message using the online "Service Form" on our Web site (www.icsadvent.com)
under "Support." Detail any errors you find. We will correct the errors or problems as soon as possible and
post the revised manual in our online Support Library. Thank you.
The information in this document is provided for reference only. ICSAdvent does not assume any liability
arising from the application or use of the information or products described herein. This document may
contain or reference information and products protected by copyrights or patents and does not convey any
license under the patent rights of ICS Advent, nor the rights of others.
Copyright © 1999, a California Corporation, 6260 Sequence Drive, San Diego, CA92121-4371. ICSAdvent
is a Registered Trademark of ICS Advent. All trademarks and registered trademarks are the property of
their respective owners. All rights reserved. Printed in the United States of America. No part of this publi-
cation may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, elec-
tronic, mechanical, photocopying, recording , or otherwise, without the prior written permission of the pub-
lisher.

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Shipments not in compliance with this Guarantee
and Limited Warranty Return Policy will not be ac-
cepted by ICS Advent.
Guarantee
A thirty day money-back guarantee is provided on all standard products sold. Special order products are
covered by our Limited Warranty, however they may not be returned for refund or credit. EPROMs,
RAM, Flash EPROMs or other forms of solid electronic media are not returnable for credit - but for
replacement only. Extended Warranty available. Consult factory.
Refunds
In order to receive a refund on a product for the purchase price, the product must not have been
damaged by the customer or by the common carrier chosen by the customer to return the goods and
the product must be returned complete (meaning all manuals, software, cables, etc.) within 30 days of
receipt and in an as-new and resalable condition. The Return Procedure must be followed to assure
prompt refund.
Restocking Charges
Product returned after 30 days, and before 60 days, of the purchase will be subject to a minimum20%
restocking charge and charges for any damaged or missing parts. Products not returned within 60
days of purchase, or products which are not in an as-new and re-saleable condition, are not eligible
for credit return and will be returned to the customer.
Limited Warranty
Effective April 1, 1998, all products carry a 2-year limited warranty. Within two years of purchase,
ICS Advent will repair or replace, at our option, any defective product. ICS Advent will service the
warranty for all standard catalog products for the first two years from the date of shipment.
Please note: The 2-year warranty may not apply to special promotion items. Please consult the factory for
warranty verification.
The limited warranty is void if the product has been subjected to alteration, neglect, misuse, or abuse; if any
repairs have been attempted by anyone other than ICS Advent or its authorized agent; or if the failure is
caused by accident, acts of God, or other causes beyond the control of ICS Advent or the manufacturer.
Neglect, misuse, and abuse shall include any installation, operation, or maintenance of the product other than
in accordance with the user’s manual.
No agent, dealer, distributor, service company, or other party is authorized to change, modify, or extend the
terms of this Limited Warranty in any manner whatsoever. ICS Advent reserves the right to make changes
or improvements in any product without incurring any obligation to similarly alter products previously
purchased.

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Return Procedure
For any Guarantee or Limited Warranty return, please contact ICS Advent's Customer Service at
800-480-0044 (U.S.) or 858-677-0877 (international) and obtain a Return Material Authorization (RMA)
Number. All product(s) returned to ICS Advent for service or credit must be accompanied by a Return
MaterialAuthorization (RMA) Number. Freight on all returned items mustbe prepaid by the customer who
is responsible for any loss or damage caused by common carrier in transit. Returns for Warranty must
include a Failure Report for each unit, by serial number(s), as well as a copy of the original invoice showing
date of purchase.
To reduce risk of damage, returns of product must be in an ICS Advent shipping container. If the original
container has been lost or damaged, new shipping containers may be obtained from ICS Advent Customer
Service at a nominal cost.
ICS Advent owns all parts removed from repaired products. ICS Advent uses new and reconditioned parts
made by various manufacturers in performing warranty repairs and building replacement products.
If ICS Advent repairs or replaces a product, its warranty term is not extended.
ICSAdvent will normally return your replacement or repaired items via Second DayAir. Overnight delivery
or delivery via other carriers is available at an additional charge.
Limitation of Liability
In no event shall ICS Advent be liable for any defect in hardware, software, loss, or inadequacy of data of
any kind, or for any direct, indirect, incidental, or consequential damages in connection with or arising out of
the performance or use of any product furnished hereunder. ICSAdvent liability shall in no event exceed the
purchase price of the product purchased hereunder. The foregoing limitation of liability shall be equally
applicable to any service provided by ICSAdvent or its authorized agent.
Some Sales Items and Customized Systems are not subject to the guarantee and limited warranty.
However in these instances , any deviations will be disclosed prior to sales and noted in the original invoice.
ICS Advent reserves the right to refuse returns or credits on software or special order items.

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Advisories
Three types of advisories are used throughout the manual to stress important points or warn of potential
hazards to the user or the system. They are the Note, the Caution, and theWarning. Following is an example
of each type of advisory:
Note: The note is used to present special instruction, or to provide extra information which may
help to simplify the use of the product.
CAUTION!
A Caution is used to alert you to a situation which if ignored may cause injury or
damage equipment.
WARNING!
AWarningisusedtoalertyouofasituationwhichifignoredwillcauseseriousinjury.
Cautions and Warnings are accented with triangular symbols. The exclamation symbol is used in all cautions
and warnings to help alert you to the important instructions. The lightning flash symbol is used on the left
hand side of a caution or a warning if the advisory relates to the presence of voltage which may be of
sufficient magnitude to cause electrical shock.
Use caution when servicing any electrical component. We have tried to identify the areas which may pose
a Caution or Warning condition in this manual; however, ICS Advent does not claim to have covered all
situations which might require the use of a Caution or Warning.
You must refer to the documentation for any component you install into a computer system to ensure proper
precautions and procedures are followed.

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Table of Contents
Chapter 1: Installation .................................................................................................. 1
Chapter 2: Address Selection......................................................................................3
Chapter 3: Option Selection ........................................................................................5
Chapter 4: Windows 3.1 Setup....................................................................................9
Chapter 5: Technical Description.............................................................................. 11
FeaturesInclude: ..........................................................................................................................11
How toremain CECompliant ...............................................................................................................12
Chapter 6: Specifications .......................................................................................... 13
EnvironmentalSpecifications.........................................................................................................13
PerformanceSpecifications...........................................................................................................13
ManufacturingSpecifications.........................................................................................................13
PowerSpecifications.....................................................................................................................13
Chapter 7: Troubleshooting ......................................................................................15
Appendix A: Silk-Screen ............................................................................................19

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List of Figures
Figure3-1: Header E1 &E2 (Factory Default) ............................................................................................ 5
Figure 3-2: Header E1 & E2 Optional Windows 3.1 configuration .............................................................. 6
Figure3-3: Header E3NormalMode .......................................................................................................... 6
Figure3-4: HeaderE3“SharedMode” ........................................................................................................ 6
Figure3-5: HeaderE3“Shared Mode”with acompatiblecard providingthe pulldownresistor.................... 7
Figure5-1: DB-9 loopback connectionsforRS-232 ..................................................................................12
FigureA-1: DUAL232/ATSilk-Screen ........................................................................................................19
List of Tables
Table 2-1: AddressSelectionTable............................................................................................................. 3
Table 5-1: J1 &J2RS-232 ConnectorPin-Outs: ........................................................................................11
Current Revision 3D
December 2000

Manual Number: 00750-010-3 Page 1
Chapter 1: Installation
The DUAL232/AT:can be installed in any of the PC expansion slots, except J8 on the original IBM
XT and Portable. Remove the PC case, remove the blank metal slot cover, and insert the board.
replace the screw, replace the case, and the installation is complete.
NOTE:
Be sure to set the address and jumper options before installation.

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Chapter 2: Address Selection
Each serial port on the DUAL232/AT:occupies 8 consecutive I/O locations, and looks to the PC as
a standard serial port. A dip switch (SW1) is used to set the port address options for the DUAL232/
AT:. Be careful when selecting the port addresses as some selections may conflict with existing
ports. The following table shows the addressing options available with the standard PAL. If you do
not see an address option that suits your needs, please contact Technical Support about a custom
PAL option.
Table 2-1: Address Selection Table
3RUW
- 3RUW - 6: 6: 6: 6: 
) ) 2Q 2Q 2Q 2II
( ( 2Q 2Q 2II 2Q
) ( 2Q 2Q 2II 2II
) ( 2Q 2II 2Q 2Q
  2Q 2II 2Q 2II
  2Q 2II 2II 2Q
  2Q 2II 2II 2II
  2II 2Q 2Q 2Q
  2II 2Q 2Q 2II
  2II 2Q 2II 2Q
  2II 2Q 2II 2II
  2II 2II 2Q 2Q
  2II 2II 2Q 2II
  2II 2II 2II 2Q
'LVDEOHG 'LVDEOHG 2II 2II 2II 2II
All addresses are in Hex
DOS NOTE: Each COM: port in your system should have a unique address. Typically COM1:-
COM4: addresses are 3F8, 2F8, 3E8 & 2E8 Hex. If a COM1: & COM 2: are already present, use
the second addressing option, this will provide the typical addresses for COM3: & COM4: .

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Chapter 3: Option Selection
The board contains several jumper straps for each port which must be set for proper operation.
E1, E2: These headers select the interrupt request for each serial port. If COM1: is selected, this
jumper must be on the IRQ4 setting. If COM2: is selected, this jumper must be on IRQ3. E1 sets
the IRQ for Port 1 and E2 sets the IRQ for Port 2. Any two or more ports can share a common IRQ
by placing the jumpers on the same IRQ setting, and setting the appropriate selections at E3. Con-
sult your particular software for IRQ selection. If no interrupt is desired, remove the jumper.
Note: Most communications software applications default COM3: to IRQ4 and COM4: to IRQ3.
This requires the sharing of interrupts between COM1: and COM3:, and between COM2: and
COM4:. While this is the default, it is not always the preferred setting. Windows 3.1, OS/2 and
UNIX applications typically require a separate IRQ setting for each address. Check your software
configuration instructions to determine the most appropriate .
Figure 3-1: Header E1 & E2 (Factory Default)

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DUAL232/AT Manual
Figure 3-2: Header E1 & E2 Optional Windows 3.1 configuration
Note: IRQ 2 on AT class machines is not available . IRQ 9 is substituted in place of IRQ 2. To
select IRQ 9 place the jumper on the IRQ 2 position.
E3: N indicates the (N)ormal, single interrupt per port mode. The S indicates the (S)hared
interrupt mode, which allows more than one port to access a single IRQ. The R indicates the
inclusion of a 1K ohm pull-down resistor required on one port when sharing interrupts. This is the
preferred Windows and OS/2 setting. Note that the 1 in the Silk-screen and illustration refer to
Port1 and 2 refers to Port 2.
Figure 3-3: Header E3 Normal Mode
Set jumpers to N for single interrupt mode. This setting is the normal setting for most applica-
tions.
Figure 3-4: Header E3 Shared Mode

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Set jumpers to S for shared interrupt mode for all ports sharing an IRQ . Then set one of the ports
sharing an IRQ to S & R. This provides the pull-down resistor circuit that makes sharing of
IRQs possible. R and S should only be used when sharing an interrupt.
If you are using more than one DUAL232/AT: (3088) or a compatible card in a bus sharing a single
interrupt, you should only have one port set to R.
Figure 3-5: Header E3 Shared Mode with a compatible card providing the pull down resistor
Remove all jumpers on E3 to simulate a common serial port with out any interrupt line control.

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Manual Number: 00750-010-3 Page 9
Chapter 4: Windows 3.1 Setup
To configure the DUAL232/AT: under Windows 3.1 start by opening the Control Panel. The
Control Panel is typically found in the Main Program Group. The next step is to open the Ports
selection under the Control Panel.
Select the port you wish to configure. Once you have selected the port, click on the Settings
button.
The next step is to select the appropriate Baud rate, Data Bits, Parity, Stop Bits and Flow control.
If you wish to select an IRQ or address different than the default click on the Advanced button.

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DUAL232/AT Manual
Select OK for all windows after you have made your selection. The following message should
appear:
If you wish to configure another COM: Port setting, select the Dont Restart Now button and
repeat this procedure until you have configured all new ports. To make the changes take effect
immediately select the Restart Now button.

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Chapter 5: Technical Description
The DUAL232/AT:utilizes the 16550 UART. This chip features programmable baud rate, data
format, interrupt control and a 16 byte input and output FIFO.
Features Include:
• Addressable as COM1: or COM2: or fourteen other pre-selected address options
• “PAL” option allows for unique OEM address selection
• “Shareable” IRQs allow more than one port to share a single IRQ
• IRQ’s 2-5, 7, 10-12, 15 supported
• 16550 buffered UARTs Standard
• 16 Bit address decode allows for easier integration
The DUAL232/AT:meets the RS-232C specifications and provides an asynchronous serial I/O
port for a modem, plotter, serial printer or serial mouse. This is the standard port configuration
found on the IBM “AT” computer including the DB-9 style connector.
Table 5-1: J1 & J2 RS-232 Connector Pin-Outs:
Name Pin # Mode
TD Transmit Data 3 Output RS-232
RTS Request To Send 7 Output RS-232
DTR Data Term Ready 4 Output RS-232
GND Ground 5
RD Receive Data 2 Input RS-232
DCD Data Carrier Detect 1 Input RS-232
DSR Data Set Ready 6 Input RS-232
CTS Clear To Send 8 Input RS-232
RI Ring Indicator 9 Input RS-232
(J1 is for Port 1, J2 is for Port 2)
All modem control signals are implemented on the DUAL232/AT:. If your software requires cer-
tain handshaking signals to be active, then you must connect them either to the device with which
you are communicating or if they are not present in your cable or the device you are communicat-
ing with does not support them, you can satisfy the handshake signal requirements by connecting
pins 7 to 8 (RTS to CTS) and pins 4 to 6 to 1 (DTR to DSR & DCD). Make these connections on
the DB-9 connector that connects to each port. Please refer to Figure 4 for aid in making these
connections.

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DUAL232/AT Manual
Figure 5-1: DB-9 loop back connections for RS-232
(Shown from rear or cable side of connector)
How to remain CE Compliant
In order for machines to remain CE compliant, only CE compliant parts may be used. To keep a
chassis compliant it must contain only compliant cards, and for cards to remain compliant they
must be used in compliant chassis. Any modifications made to the equipment may affect the CE
compliance standards and should not be done unless approved in writing by ICS Advent.
The Model DUAL232/AT is designed to be CE Compliant when used in an CE compliant chassis.
Maintaining CE Compliance also requires proper cabling and termination techniques. The user is
advised to follow proper cabling techniques from sensor to interface to ensure a complete CE
Compliant system. ICS Advent does not offer engineering services for designing cabling or termina-
tion systems. Although ICS Advent offers accessory cables and termination panels, it is the user's
responsibility to ensure they are installed with proper shielding to maintain CE Compliance.

Manual Number: 00750-010-3 Page 13
Chapter 6: Specifications
Environmental Specifications
Specification Operating Storage
Temperature Range 0-50°C
32-122°F -20-70°C -40-100°F
Humidity Range 0-90% R.H.
Non-Condensing 0-90% R.H. Non-Condensing
Performance Specifications
MTBF > 150,000 Hours
MTTR < .25 Hours
Turnaround For Repair - 5 Working Days
Manufacturing Specifications
• IPC 610-A CLASS-III standards adhered to with a 0.1 visual A.Q.L. and 100% Functional
Testing.
• Boards are built TO U.L. 94V0 rating and are 100% Electrically tested. Boards are solder
mask over bare copper or solder mask over tin nickel.
Power Specifications
Supply Line +5 +12 -12
Rating (mA) 160mA 25mA 25mA