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Technical Description

Sealevel Systems

COMM+850.PCI

Page

Technical Description

The Sealevel Systems

COMM+850.PCI

provides a versatile interface for any

RS-232 device including modems, printers and plotters.

The

COMM+850.PCI

utilizes the 16850 UART. This chip features

programmable baud rates, data format, interrupt control and industry leading
128-byte FIFOs.

Connector Pin Assignments

RS-232 (DB-25 Male DTE)

Name

Pin #

Mode

Transmit Data

Output

RTS

Request To Send

Output

DTR

Data Term Ready

Output

GND

Ground

Receive Data

Input

DCD

Data Carrier Detect

Input

DSR

Data Set Ready

Input

CTS

Clear To Send

Input

Ring Indicator

Input

Содержание COMM+850.PCI 7104

Страница 1: ...Part 7104 Sealevel Systems Inc 155 Technology Place P O Box 830 Liberty SC 29657 USA Phone 864 843 4343 FAX 864 843 3067 www sealevel com COMM 850 PCI USER MANUAL TM ...

Страница 2: ...GNMENTS 4 RS 232 DB 25 Male DTE 4 SPECIFICATIONS 5 ENVIRONMENTAL SPECIFICATIONS 5 MANUFACTURING 5 POWER CONSUMPTION 5 MEAN TIME BETWEEN FAILURES MTBF 5 PHYSICAL DIMENSIONS 5 APPENDIX A TROUBLESHOOTING 6 APPENDIX B HOW TO GET ASSISTANCE 7 APPENDIX C ELECTRICAL INTERFACE 8 RS 232 8 APPENDIX D ASYNCHRONOUS COMMUNICATIONS 9 APPENDIX E SILK SCREEN 10 APPENDIX F COMPLIANCE NOTICES 11 FEDERAL COMMUNICATI...

Страница 4: ...gned resources by your motherboard BIOS Only the I O address may be modified by the user Adding or removing other hardware may change the assignment of I O addresses and IRQs Clock Modes The COMM 850 PCI employs a unique clocking option that allows the end user to select from divide by 4 and divide by 1 clocking modes These modes are selected at Header J1 To select the Baud rates commonly associat...

Страница 5: ...200 bps 300 bps 2400 bps 600 bps 4800 bps 1200 bps 9600 bps 2400 bps 19 2K bps 4800 bps 57 6 K bps 14 4K bps 115 2 K bps 28 8K bps 230 4K bps 57 6 K bps 460 8K bps 115 2 K bps If your communications package allows the use of Baud rate divisors choose the appropriate divisor from the following table For this Data Rate Choose this Divisor 1200 bps 384 2400 bps 192 4800 bps 96 9600 bps 48 19 2K bps 2...

Страница 6: ...ware System Installation The COMM 850 PCI can be installed in any of the PCI expansion slots and contains several jumper straps for each port that must be set for proper operation 1 Turn off PC power Disconnect the power cord 2 Remove the PC case cover 3 Locate an available PCI slot and remove the blank metal slot cover 4 Gently insert the COMM 850 PCI into the slot Make sure that the adapter is s...

Страница 7: ...tilizes the 16850 UART This chip features programmable baud rates data format interrupt control and industry leading 128 byte FIFOs Connector Pin Assignments RS 232 DB 25 Male DTE Name Pin Mode TD Transmit Data 2 Output RTS Request To Send 4 Output DTR Data Term Ready 20 Output GND Ground 7 RD Receive Data 3 Input DCD Data Carrier Detect 8 Input DSR Data Set Ready 6 Input CTS Clear To Send 5 Input...

Страница 8: ...el Systems Printed Circuit boards are built to U L 94V0 rating and are 100 electrically tested These printed circuit boards are solder mask over bare copper or solder mask over tin nickel Power Consumption Supply line 12VDC 12VDC 5 VDC Rating 50 mA 50 mA 300 mA Mean Time Between Failures MTBF Greater than 150 000 hours Calculated Physical Dimensions Board length 4 9 inches 12 45 cm Board Height in...

Страница 9: ...e sharing of IRQs many other adapters i e SCSI adapters on board serial ports do not The IRQ is typically selected via an on board header block Refer to the section on Card Setup for help in choosing an I O address and IRQ 4 Make sure the Sealevel Systems adapter is securely installed in a motherboard slot 5 When running DOS or Windows 3 x refer to the supplied Sealevel Software and this User Manu...

Страница 10: ...a computer ready to run diagnostics 3 Sealevel Systems maintains a Home page on the Internet Our home page address is www sealevel com The latest software updates and newest manuals are available via our FTP site that can be accessed from our home page 4 Technical support is available Monday thru Friday from 8 00 a m to 5 00 p m eastern time Technical support can be reached at 864 843 4343 RETURN ...

Страница 11: ...tween Data Terminal Equipment and Data Circuit Terminating Equipment Employing Serial Binary Data Interchange Both implementations are in wide spread use and will be referred to as RS 232 in this document RS 232 is capable of operating at data rates up to 20 Kbps at distances less than 50 ft The absolute maximum data rate may vary due to line conditions and cable lengths RS 232 is a single ended o...

Страница 12: ...on of a pre defined number of stop bits usually 1 1 5 or 2 An extra bit used for error detection is often appended before the stop bits Remain Idle or next start bit Odd Even or Unused STOP P BIT 5 to 8 Data Bits Idle state of line 1 0 1 1 5 2 Figure 1 Asynchronous Communications Bit Diagram This special bit is called the parity bit Parity is a simple method of determining if a data bit has been l...

Страница 13: ...Appendix E Silk Screen Sealevel Systems COMM 850 PCI Page 10 Appendix E Silk Screen 2 60 4 90 ...

Страница 14: ...rease the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Caution Sealevel Systems Inc is not responsible for any radio or television interference caused by unauthorized modifications of this equipment or the substitution of attach...

Страница 15: ... met EN55022 Class B Limits and methods of measurement of radio interference characteristics of information technology equipment EN55024 Information technology equipment Immunity characteristics Limits and methods of measurement EN60950 IEC950 Safety of information technology equipment including electrical business equipment Always use cabling provided with this product if possible If no cable is ...

Страница 16: ...o use this product Sealevel Systems will not be liable for any claim made by any other related party RETURN AUTHORIZATION MUST BE OBTAINED FROM SEALEVEL SYSTEMS BEFORE RETURNED MERCHANDISE WILL BE ACCEPTED AUTHORIZATION CAN BE OBTAINED BY CALLING SEALEVEL SYSTEMS AND REQUESTING A RETURN MERCHANDISE AUTHORIZATION RMA NUMBER Sealevel Systems Incorporated 155 Technology Place P O Box 830 Liberty SC 2...

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