Impulse 3420 User Manual
COMM+8™
USER MANUAL
Part #3420
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 ............................................................................ 3
ADDRESS SELECTION......................................................................3
“PAL” ADDRESSING ......................................................................4
IRQ SELECTION..............................................................................4
INTERRUPT MODE OPTIONS............................................................5
CLOCK MODES ...............................................................................6
BAUD RATES AND DIVISORS FOR THE ‘DIV1’ MODE.......................7
INSTALLATION ......................................................................... 8
OPERATING SYSTEM INSTALLATION...............................................8
For Windows Users ....................................................................8
Other Operating Systems ............................................................8
SYSTEM INSTALLATION ..................................................................8
TECHNICAL DESCRIPTION ...................................................... 9
FEATURES.......................................................................................9
INTERRUPT STATUS PORT...............................................................9
DB-25 CONNECTOR PIN ASSIGNMENTS (DB-25 MALE) ..............10
DB-9 (EIA-574 DTE) (DB-9 Male)..........................................10
DB-78 CONNECTOR PIN ASSIGNMENTS (DB-78 FEMALE) ...........11
SPECIFICATIONS .................................................................... 12
ENVIRONMENTAL SPECIFICATIONS...............................................12
POWER CONSUMPTION .................................................................12
MEAN TIME BETWEEN FAILURES (MTBF)...................................12
PHYSICAL DIMENSIONS ................................................................12
APPENDIX A - TROUBLESHOOTING ...................................... 13
PPENDIX B - HOW TO GET ASSISTANCE............................ 15
A
APPENDIX C - ELECTRICAL INTERFACE .............................. 16
RS-232.........................................................................................16
APPENDIX D - ASYNCHRONOUS COMMUNICATIONS............ 17
APPENDIX E - SILK-SCREEN ................................................. 18
PPENDIX F - COMPLIANCE NOTICES.................................. 19
A
FEDERAL COMMUNICATIONS COMMISSION STATEMENT..............19
EMC DIRECTIVE STATEMENT......................................................19
WARRANTY............................................................................ 20
Figures
Figure 1 - Address Selection Table ...........................................................3
Figure 2 - DIP-switch Illustration.............................................................3
Figure 3 - Headers E1 to E8 (IRQ15 selected).........................................4
Figure 4 - Header E9 and E10, Normal IRQ Mode.................................5
Figure 5 - Header E9 and E10, Shared IRQ Mode .................................5
Figure 6 - Header E9 and E10, Sharing IRQs with another adapter ....6
Figure 7 - Clocking Mode ‘Divide By 4’...................................................6
Figure 8 - Clocking Mode ‘Divide By 1’...................................................7
Figure 9 - DB-25 Connector Pin Assignments.......................................10
Figure 10 - DB-25 Connector Pin Assignments .....................................10
Figure 11 - DB-78 Connector Pin Assignments .....................................11
Figure 12 - Asynchronous Communications Bit Diagram....................17
© Sealevel Systems, Inc.
SL9145 Revision 7/2006
Sealevel Systems, Incorporated. All rights reserved.
Introduction
Introduction
Overview
The Sealevel Systems COMM+8 provides the PC with eight RS-232
asynchronous ports. The COMM+8 allows for connection to any device
utilizing the RS-232 electrical interface, such as modems, data-entry terminals,
and plotters.
What’s Included
The COMM+8 is shipped with the following items. If any of these items is
missing or damaged, contact the supplier.
• COMM+8 Serial I/O Adapter
• “Octopus” Cable providing 8 DB-25 or DB-9 connectors
• Sealevel Software
Factory Default Settings
The COMM+8 factory default settings are as follows:
Port # Base Address IRQ E12
Port 1 280 5 DIV4
Port 2 288 5
Port 3 290 5
Port 4 298 5
Port 5 2A0 5
Port 6 2A8 5
Port 7 2B0 5
Port 8 2B8 5
To install the COMM+8 using factory default settings, refer to the Installation
section of this manual.
Sealevel Systems COMM+8 Page 1
Introduction
For your reference, record installed COMM+8 settings below:
Port # Base Address IRQ E12
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
The following table illustrates the port assignments for the Factory Default
setting.
Port # DB-25# Address Example
1 1 Base+0 280-287
2 2 Base+8 288-28F
3 3 Base+16 290-297
4 4 Base+24 298-29F
5 5 Base+32 2A0-2A7
6 6 Base+40 2A8-2AF
7 7 Base+48 2B0-2B7
8 8 Base+56 2B8-2BF
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Card Setup
Card Setup
The COMM+8 contains several jumper straps that must be set for proper
operation.
Address Selection
The COMM+8 occupies 64 I/O locations and can be addressed two
different ways. If header E11 is set to the “Switch” position the COMM+8
occupies 64 consecutive I/O locations and the DIP-switch is used to set the
base address for these locations. The starting address for these 64 I/O
locations must be on a 64-byte boundary i.e.: Hex 200, 240, 280, or 2C0.
Be careful when selecting the base address as some selections conflict with
existing PC ports. The following table shows several examples that usually
do not cause a conflict. Refer to Appendix A for common address
contentions.
Address Switch Position Setting:
1 2 3 4 5 6 7
100-13F On On On On Off On On
180-1BF On On On On Off Off On
240-27F On On On Off On On Off
280-2BF On On On Off On Off On
2C0-2FF On On On Off On Off Off
300-3FF On On On Off Off On On
500-53F On On Off On Off On On
580-5BF On On Off On Off Off On
1500-153F Off On Off On Off On On
1580-15BF Off On Off On Off Off On
Figure 1 - Address Selection Table
The following illustration shows the correlation between the DIP-switch
setting and the address bits used to determine the base address. In the
example below, address 280 (Factory Default) is selected as a base.
A12 A6
ON
OFF
1 2 3 4 5 6 7
Figure 2 - DIP-switch Illustration
Note: Setting the switch “On” or “Closed” corresponds to a “0” in the
address, while leaving it “Off” or “Open” corresponds to a “1”.
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Card Setup
“PAL” Addressing
If header E11 is set to the “PAL” position, the board can be addressed at a
customized location. Using the “PAL” option will allow you to obtain
COM1: - COM4: addresses, XENIX COM: addresses, or any other
standard or nonstandard address configuration. Using the “PAL” feature is
a very cost-effective means of solving complex addressing problems. For
more information on implementing the “PAL” option, please contact
Sealevel Systems Technical Support.
IRQ Selection
Each port on the COMM+8 has an interrupt jumper that may have to be
set prior to use. The software you are using with the board will determine
which interrupts, if any are to be used. The DOS serial port interface
software does not use interrupts, while interrupt buffer programs do. DOS
does not require the interrupt to be set, while most Multi - User Operating
Systems will. Consult the particular manual for the software that you are
using to determine the proper setting.
To set the interrupt for a particular port, first select the header for the port
desired. Headers E1-E8 correspond to Ports 1-8. Next select an IRQ by
placing one of the jumpers on the header location that corresponds to the
IRQ number that you wish to use. Below is an example of a selected IRQ.
2 3 4 5 6 7 10 11 12 15
Figure 3 - Headers E1 to E8 (IRQ15 selected)
Sealevel Systems COMM+8 Page 4
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