USB to RS232 Cable
Contents
1. Ultimate Solutions Inc SeaLink 232 Users Manual Part 2105 Telephone 864 843 4343 Fax 864 843 3067 www sealevel com Sealevel Systems Inc PO Box 830 Liberty SC 29657 USA Table of Contents INSTALLATION INSTRUCTIONS ws cciccesceauscsianssacassvancecenusbasaasoapcodsessssbacdosoesoaveseuss conssi sst as reens WINDOWS 98 ME 2000 XP VISTA OPERATING SYSTEMS cccccccccccccesesesecececesececececesesesessseseseesseeseesaeseaes 2 PHYSICALINSTAELATION 2 2 27 ds 925s docu vous rete i eeu ds eese Boves ete or eee o rei ese does deae eee Doo eeu e Eas diet 2 TECHNICAL DESCRIPTION 255 5e ce sens ete e reae eoo ese eta ao Pe Se La sene ae ds Pa Gee doe Pe a dod do ee Deae osos a oe Uo ea sevo e pe toeo SPECIFICATIONS e cic ec en oe eoe e e uc oo ae ee o e pea e n oo ape oae eL aud uo n Ea o aka a ue ao eu pa eo o ue UD dae doe a Uca ao aae do uoc oae a APPENDIX A TROUBLESHOOTING 5 600 00 546 6s estre uo pe 0o dosi tse aa doeet d oU Usos oae be do UE pU as Uo S aoa e ba auno APPENDIX C ELECTRICAL INTERFACE cccccssssssssssssssssssssssssssssssssscscscssscscssscsesessscsesesesesesesesess 3 4 5 APPENDIX B How TO GET ASSISTANCE eeee ee eese so sess ose es osse esas seen ases ense ee es sees esse sees seeessse ee 0 7 APPENDIX D ASYNCHRONOUS COMMUNICATIONS eesseseessesecssoscoeessceceesscceesscceessssecessseceesseceessesee 9 9 APPENDIX E COMPLIANCE NOTICES scccssss2. SI 574 DTE specifications for DB 9 type connectors Please terminate any control signals that are not going to be used The most common way to do this is connect RTS to CTS and RI Also connect DCD to DTR and DSR Terminating these pins if not used will help insure you get the best performance from your adapter Sealevel Systems SeaLINK4232 Page 3 Specifications Specifications Environmental Specifications Temperature 0 to 70 C 50 to 105 C Range 32 to 158 F 58 to 221 F Humidity Range 10 to 9096 R H 10 to 90 R H Non Condensing Non Condensing Manufacturing All Sealevel Systems Printed Circuit boards are built to UL 94V0 rating and are 100 electrically tested These printed circuit boards are solder mask over bare copper or solder mask over tin nickel 5 VDC 100 mA Physical Dimensions Package Length 2 14 inches 5 44 cm Package Width 1 4 inches 3 55 cm Package Height 63 inches 1 60 cm Sealevel Systems SeaLINK 232 Page 4 Appendix A Troubleshooting Appendix A Troubleshooting Serial Utility test software is supplied with the Sealevel Systems adapter and will be used in the troubleshooting procedures Using this software and following these simple steps most common problems can be eliminated without the need to call Technical Support 1 If your adapter isn t working first check to make sure that USB support is enabled in the System BIOS and it is functioning proper
3. SeaLINK 232 Page 10
4. ances less than 50 ft The absolute maximum data rate may vary due to line conditions and cable lengths RS 232 is a single ended or unbalanced interface meaning that a single electrical signal is compared to a common signal ground to determine binary logic states The RS 232 and the EIA TIA 574 specification define two types of interface circuits Data Terminal Equipment DTE and Data Circuit Terminating Equipment DCE The SeaLINK4232 is a DTE device Sealevel Systems SeaLINK 232 Page 7 Appendix D Asynchronous Communications Appendix D Asynchronous Communications Serial data communications implies that individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character Data rate error checking handshaking and character framing start stop bits are pre defined and must correspond at both the transmitting and receiving ends Asynchronous communications is the standard means of serial data communication for PC compatibles and PS 2 computers The original PC was equipped with a communication or COM port that was designed around an 8250 Universal Asynchronous Receiver Transmitter UART This device allows asynchronous serial data to be transferred through a simple and straightforward programming interface Character boundaries for asynchronous communications are defined by a starting bit followed by a pre defined number of data bits 5 6 7 or 8 The end of the character is de
5. ay be required to take adequate measures to prevent or correct the interference Always use cabling provided with this product if possible If no cable is provided or if an alternate cable is required use high quality shielded cabling to maintain compliance with FCC EMC directives Sealevel Systems SeaLINK 232 Page 9 Warranty Warranty Sealevel s commitment to providing the best I O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured products We are able to offer this warranty due to our control of manufacturing quality and the historically high reliability of our products in the field Sealevel products are designed and manufactured at its Liberty South Carolina facility allowing direct control over product development production burn in and testing WARRANTY Sealevel Systems Inc hereafter Sealevel warrants that the Product shall conform to and perform in accordance with published technical specifications and shall be free of defects in materials and workmanship for life In the event of failure Sealevel will repair or replace the product at Sealevel s sole discretion Failures resulting from misapplication or misuse of the Product failure to adhere to any specifications or instructions or failure resulting from neglect or abuse are not covered under this warranty Warranty service is obtained by delivering the Product to Sealevel and providing proof of purchase Return aut
6. fined by the transmission 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 Idle state of Odd Even ne p S 5 to 8 Data Bits unused Feld 1 ER M i 1 qu roO et RU e uethezb le m I i ler ISTP 1 is er e Eee TE Spo euge AEE T JE pe ss 0 l iol Paes et a Hl 15 l4 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 lost or corrupted during transmission There are several methods for implementing a parity check to guard against data corruption Common methods are called E ven Parity or O dd Parity Sometimes parity is not used to detect errors on the data stream This is refereed to as N o parity Because each bit in asynchronous communications is sent consecutively it is easy to generalize asynchronous communications by stating that each character is wrapped framed by pre defined bits to mark the beginning and end of the serial transmission of the character The data rate and communication parameters for asynchronous communications have to be the same at both the transmitting and receiving ends The communication parameters are baud rate parity number of data bits per character and stop bits i e 9600 N 8 1 Sealevel Systems SeaLINK4232 Page 8 Appendix E Compliance Notices Appendix E Compliance Notice
7. his to answer many common questions This section can be found at http www sealevel com faq asp 4 Sealevel Systems maintains a web page on the Internet Our home page address is http www sealevel com The latest software updates and newest manuals are available via our web site 5 Technical support is available Monday to Friday from 8 00 a m to 5 00 p m eastern time Technical support can be reached at 864 843 4343 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 SeaLINK 232 Page 6 Appendix C Electrical Interface Appendix C Electrical Interface RS 232 Quite possibly the most widely used communication standard is RS 232 This implementation has been defined and revised several times and is often referred to as RS 232 or EIA TIA 232 The IBM PC computer defined the RS 232 port on a 9 pin D sub connector and subsequently the EIA TIA approved this implementation as the EIA TIA 574 standard This standard is defined as the 9 Position Non Synchronous Interface between 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 dist
8. horization must be obtained from Sealevel Systems before returned merchandise will be accepted Authorization is obtained by calling Sealevel Systems and requesting a Return Merchandise Authorization RMA number The Customer agrees to insure the Product or assume the risk of loss or damage in transit to prepay shipping charges to Sealevel and to use the original shipping container or equivalent Warranty is valid only for original purchaser and is not transferable Sealevel Systems assumes no liability for any damages lost profits lost savings or any other incidental or consequential damage resulting from the use misuse of or inability to use this product Sealevel Systems will not be liable for any claim made by any other related party This warranty applies to Sealevel manufactured Product Product purchased through Sealevel but manufactured by a third party will retain the original manufacturer s warranty Sealevel Systems Incorporated 2779 Greenville Highway P O Box 830 Liberty SC 29657 USA 864 843 4343 FAX 864 843 3067 www sealevel com email support sealevel com Technical Support is available from 8 a m to 5 p m Eastern time Monday Friday Trademarks Sealevel Systems Incorporated acknowledges that all trademarks referenced in this manual are the service mark trademark or registered trademark of the respective company SeaLINK 232 is a trademark of Sealevel Systems Incorporated Sealevel Systems
9. ly in the operating system This can be done by using either the Windows 98 ME or Windows 2000 Device Manager Ensure that the Sealevel Systems software has been installed on the machine so that the necessary files are in place to complete the installation Use Sealevel s WinSSD utility and the supplied loopback plug to check communications The supplied loopback plug connects TD to RD To test the Modem Control Signals a full pin loopback plug will be required Details on loopback plugs are included within WinSSD Contact Sealevel Systems if you need further assistance When testing the SeaLINK 232 in loopback mode you should see both the TX and RX LED s flashing as well as seeing echoed data on the screen The loopback test first transmits a HEX pattern 55AA and then an ASCII string of data If this test passes then the SeaLINK 232 is ready for use in your application Sealevel Systems SeaLINK 232 Page 5 Appendix B How To Get Assistance Appendix B How To Get Assistance Please refer to Troubleshooting Guide prior to calling Technical Support 1 Begin by reading through the Trouble Shooting Guide in Appendix A If assistance is still needed please see below 2 When calling for technical assistance please have your user manual and current adapter settings If possible please have the adapter installed in a computer ready to run diagnostics 3 Sealevel Systems provides an FAQ section on its web site Please refer to t
10. r for your device from the listing 6 The setup file will automatically detect the operating environment and install the proper components Follow the information presented on the installation screens that follow 7 A screen may appear with the declaration The publisher cannot be determined due to the problems below Authenticode signature not found Please select the Yes button and proceed with the installation This declaration simply means that the Operating System is not aware of the driver being loaded It will not cause any harm to your system 8 During setup you may specify installation directories and other preferred configurations This program also adds entries to the system registry that are necessary for specifying the operating parameters for each driver An uninstall option is included to remove the driver and all registry INI file entries from your system 9 Proceed with the physical installation of your SeaLINK USB serial adapter NOTE Windows NT is not USB aware and thus cannot support this device Physical Installation The SeaLINK 232 can be connected to any Upstream Type A port either at the PC host or an Upstream Hub and since it is hot pluggable there is no need to power down your computer prior to installation The SeaLINK4232 requires no user hardware configuration Once you have installed the software simply plug the SeaLINK 232 into an available USB port The drivers that were in
11. s Federal Communications Commission Statement FCC This equipment has been tested and found to comply with the limits for Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in such case the user will be required to correct the interference at the users expense EMC Directive Statement C Products bearing the CE Label fulfill the requirements of the EMC directive 89 336 EEC and of the low voltage directive 73 23 EEC issued by the European Commission To obey these directives the following European standards must be met EN55022 Class A Limits and methods of measurement of radio interference characteristics of information technology equipment ENS5024 Information technology equipment Immunity characteristics Limits and methods of measurement EN60950 IEC950 Safety of information technology equipment including electrical business equipment Warning This is a Class A Product In a domestic environment this product may cause radio interference in which case the user m
12. ssssssssssssssssssssssssssssssssssssoscscscscscssscssscsesesssesssesesess Sealevel Systems Inc SL9093 Revision 4 2007 Sealevel Systems Incorporated All rights reserved Introduction Introduction Overview The Sealevel Systems SeaLINK 232 equips the PC with 1 USB to RS 232 Asynchronous serial port providing a versatile interface for common RS 232 needs i e modem mouse and plotter The advantage of this product over more traditional approaches is that it doesn t require opening the computer case nor does it require resources such as I O ports or IRQs It does require a system that supports USB both in terms of hardware and operating system What s Included The SeaLINK 232 is shipped with the following items If any of these items is missing or damaged contact the supplier e SeaLINK4232 USB to RS 232 Serial I O Adapter e Sealevel SeaCOM Software CD Sealevel Systems SeaLINK 232 Page 1 Installation Installation Instructions Windows 98 ME 2000 XP Vista Operating Systems Do not connect the device to a USB port until the software is installed 1 Start Windows 2 Insert the Sealevel Software CD in to your CD drive 3 If Auto Start is enabled the installation window will automatically appear Otherwise navigate to the root directory of your CD drive and double click the autorun exe application to launch the installation window 4 Select Install Software 5 Select the Part Numbe
13. stalled during setup will automatically be used to configure the adapter You should see one or more New Hardware Found indicating the actual port being created If you view your systems Device Manager at this point you should have a new COM port in the Ports COM amp LPT Device Class You can access your new COM port by using the assigned COM identifier This assignment will vary from system to system At this point the hardware is recognized To verify operation use Sealevel Systems supplied WinSSD diagnostic utility WinSSD can be found in the Start Programs group Sealevel Systems SeaLINK 232 Page 2 Technical Description Technical Description The SeaLINK 232 utilizes a USB UART This chip features programmable baud rate data format 128 byte Dual Port TX Buffer and 384 byte Dual Port RX Buffer The RS 232 transceiver supports data rates up to 460 8K baud Refer to Appendix C for cable length limitations Features e Hot Pluggable device that doesn t require opening the case e Nosystem resources are required i e I O ports or IRQs e LED status indicators for TX and RX Connector Pin Assignments DB9 Male Signal Name Pin Mode GND TD Output RTS Request To Send 7 Output DTR Data Terminal Ready Output RD Input CTS Clear To Send Input DSR Data Set Ready Input DCD Data Carrier Detect Input RI Ring Indicator 9 Input Note These assignments meet EIA TIA AN
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