Impulse 3088 User Manual
DUOCOM™
User Manual
Part #3088
Sealevel Systems, Inc. Telephone: (864) 843-4343
PO Box 830 Fax: (864) 843-3067
Liberty, SC 29657 USA www.sealevel.com
Contents
INTRODUCTION ........................................................................ 1
OVERVIEW......................................................................................1
WHAT’S INCLUDED.........................................................................1
FACTORY DEFAULT SETTINGS ........................................................1
CARD SETUP ............................................................................ 2
ADDRESS SELECTION......................................................................2
IRQ SELECTION..............................................................................3
INTERRUPT MODES.........................................................................4
INSTALLATION ......................................................................... 6
OPERATING SYSTEM INSTALLATION ...............................................6
For Windows Users.....................................................................6
Other Operating Systems ............................................................6
SYSTEM INSTALLATION ..................................................................6
TECHNICAL DESCRIPTION ...................................................... 7
FEATURES.......................................................................................7
CONNECTOR PIN ASSIGNMENTS (DB9 MALE) ................................7
SPECIFICATIONS ...................................................................... 8
ENVIRONMENTAL SPECIFICATIONS .................................................8
MANUFACTURING...........................................................................8
POWER CONSUMPTION ...................................................................8
MEAN TIME BETWEEN FAILURES (MTBF) .....................................8
PHYSICAL DIMENSIONS...................................................................8
APPENDIX A - TROUBLESHOOTING ........................................ 9
PPENDIX B - HOW TO GET ASSISTANCE............................ 11
A
A
PPENDIX C - ELECTRICAL INTERFACE .............................. 12
RS-232.........................................................................................12
APPENDIX D - ASYNCHRONOUS COMMUNICATIONS ............ 13
APPENDIX E - SILK-SCREEN ................................................. 14
PPENDIX F - COMPLIANCE NOTICES .................................. 15
A
FEDERAL COMMUNICATIONS COMMISSION STATEMENT...............15
CANADIAN RADIO INTERFERENCE REGULATIONS .........................15
EMC DIRECTIVE STATEMENT ......................................................16
WARRANTY............................................................................ 17
Figure 1 - Address Selection Table ...........................................................2
Figure 2 - Header E1 and E2, IRQ Selection...........................................3
Figure 3 - Header E3, Normal IRQ Mode................................................4
Figure 4 - Header E3, Shared IRQ Mode ................................................4
Figure 5 - Header E3, Sharing IRQ’s with another adapter..................5
Figure 6 - Asynchronous Communications Bit Diagram......................13
© Sealevel Systems, Inc.
SL9141 Revision 7/2006
Sealevel Systems, Incorporated. All rights reserved.
Introduction
Introduction
Overview
The Sealevel Systems DUOCOM: provides the PC with 2 Asynchronous serial
ports providing a versatile interface for common RS-232 needs (i.e. modem,
mouse and plotters).
What’s Included
The DUOCOM: is shipped with the following items. If any of these items are
missing or damaged, contact the supplier.
• DUOCOM: Serial I/O Adapter
Factory Default Settings
The DUOCOM: factory default settings are as follows:
To install the DUOCOM: using factory default settings, refer to Installation on
page 6.
• Sealevel Software
Port # Base Address IRQ
Port 1 280 5
Port 2 288 10
For your reference, record installed DUOCOM: settings below:
Port # Base Address IRQ
Port 1
Port 2
Sealevel Systems DUOCOM: Page 1
Card Setup
Card Setup
The DUOCOM: contains several jumper straps which must be set for proper
operation.
Address Selection
Each serial port on the DUOCOM: occupies eight 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 DUOCOM:. 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 Sealevel Systems
Technical Support about a custom PAL option.
Port1
J2
3F8 2F8 On On On Off
3E8 2E8 On On Off On
2F8 2E8 On On Off Off
2F8 3E8 On Off On On
3220 3228 On Off On Off
4220 4228 On Off Off On
5220 5228 On Off Off Off
5220 4220 Off On On On
280 290 Off On On Off
300 308 Off On Off On
310 318 Off On Off Off
280 288 Off Off On On
290 298 Off Off On Off
300 280 Off Off Off On
Disabled Disabled Off Off Off Off
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: &
COM2: are already present, use the second addressing option, this will
provide the typical addresses for COM3: & COM4: .
Port2
J3
SW1
1
Figure 1 - Address Selection Table
SW1
SW1
2
3
SW1
4
Refer to Appendix A for common address contentions.
Sealevel Systems DUOCOM: Page 2
Card Setup
/9
345
710
5
IRQ Selection
Headers E1 and E2 select the interrupt request for each serial port (E1 - Port 1,
E2 - Port 2). If COM1: is selected, the corresponding jumper must be on the
IRQ4 setting. If COM2: is selected, the corresponding jumper must be on IRQ3.
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. Check your software configuration
instructions to determine the most appropriate IRQ selection.
E1
2/9 3 4 5 7 10 11 12 15
E2
2
Figure 2 - Header E1 and E2, IRQ Selection
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. Consult your
particular software for IRQ selection. If no interrupt is desired, remove the
jumper.
Sealevel Systems DUOCOM: Page 3
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