2123 User Manual
Contents
1. To confirm that the drivers have been successfully installed you can look in Device Manager under Ports COM amp LPT and the port you installed will be included on the list with the associated COM number To access Device Manager follow the steps below 1 Right click on the My Computer icon on your desktop or in the Start menu 2 Click on Properties in the fly out menu to launch the System Properties window O9 Click on the Hardware tab and then click on the Device Manager button When Device Manager launches look under Ports COM amp LPT to verify that the serial port has been correctly installed screenshot of 2833 shown only one port will be listed for the 2123 Note Your system will assign the next available COM numbers which may vary for each computer used E Device Manager File Action view Help 5 H S 2n a ESE ALEY EL a E P Computer Se Disk drives B Display adapters Ed DWDCD ROM drives E 4 Floppy disk controllers E 4 Floppy disk drives 6 2 IDE ATAJATAPI controllers H Keyboards 2 Mice and other pointing devices Monitors H E Multi port serial adapters fl BB Network adapters 5 y Ports COM amp LPT ff Communications Port COM1 A Communications Port COME oo 4 ECP Printer Port LPT1 7 SeaLINK 8M 5C USB to Serial Port COM1O y 5eaLIMNK 8M 5C USB to Serial Port COMS SeaLINK 8M 5C USB to Serial Port 101414 A 5eaLINK 8M2. Four wire mode allows full duplex data transfers RS 485 does not define a connector pinout or a set of modem control signals RS 485 does not define a physical connector Sealevel Systems Inc 19 SeaLINK SC User Manual 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 compatible 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 A starting bit followed by a pre defined number of data bits 5 6 7 or 8 defines character boundaries for asynchronous communications The end of the character is defined 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 The diagram below demonstrates asynchronous communication bits Idle state of Odd Even ing ___ ___ _ 5 to 8 Data Bits ________ RE
3. 422 is rated up to 10 Megabits per second and can have cabling 4000 feet long RS 422 also defines driver and receiver electrical characteristics that will allow one driver and up to 32 receivers on the line at once RS 422 signal levels range from 0 to 5 volts RS 422 does not define a physical connector RS 485 RS 485 is backwardly compatible with RS 422 however it is optimized for party line or multi drop applications The output of the RS 422 485 driver is capable of being Active enabled or Tri State disabled This capability allows multiple ports to be connected in a multi drop bus and selectively polled RS 485 allows cable lengths up to 4000 feet and data rates up to 10 Megabits per second The signal levels for RS 485 are the same as those defined by RS 422 RS 485 has electrical characteristics that allow for 32 drivers and 32 receivers to be connected to one line This interface is ideal for multi drop or network environments RS 485 tri state driver not dual state will allow the electrical presence of the driver to be removed from the line Only one driver may be active at a time and the other driver s must be tri stated RS 485 can be cabled in two ways two wire and four wire mode Two wire mode does not allow for full duplex communication and requires that data be transferred in only one direction at a time For half duplex operation the two transmit pins should be connected to the two receive pins Tx to Rx and Tx to Rx
4. 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 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 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 EJA TIA 574 specification define two types of interface circuits Data Terminal Equipment DTE and Data Circuit Terminating Equipment DCE RS 422 The RS 422 specification defines the electrical characteristics of balanced voltage digital interface circuits RS 422 is a differential interface that defines voltage levels and driver receiver electrical specifications On a differential interface logic levels are defined by the difference in voltage between a pair of outputs or inputs In contrast a single ended interface for example RS 232 defines the logic levels as the difference in voltage between a single signal and a common ground connection Differential interfaces are typically more immune to noise or voltage spikes that may occur on the communication lines Differential interfaces also have greater drive capabilities that allow for longer cable lengths RS
5. USB Cables SeaLATCH USB Connectors SeaLATCH locking USB cables integrate a small thumbscrew into SeaLATCH USB Connectors each USB connector SeaLATCH USB cables are fully interchangeable with standard USB cables The thumbscrew provides a secure metal to metal connection preventing accidental disconnection SeaLATCH USB cables are available in three configurations Type B ka Type A Item CA356 The CA356 is a 72 USB cable with a SeaLATCH type B connector and a standard USB type A connector This cable provides a secure connection between Sealevel products with a SeaLATCH type B port and legacy USB type A ports The CA356 is included with Sealevel devices with a SeaLATCH type B port Item CA 332 The CA332 is a 72 cable with both SeaLATCH type A and B connectors This cable secures both ends of the cable to devices with SeaLATCH USB ports and offers complete protection against accidental cable disconnection Item CA355 The CA355 is a 72 cable with a standard USB type B anda SeaLATCH type A connector This cable provides a secure connection between legacy USB devices and Sealevel products with a SeaLATCH type A port such as the isolated USB hub Item 270U Sealevel Systems Inc 0 SeaLINK SC User Manual Electrical Specifications The 2123 connects to a single USB port and provides a single RS 232 422 485 software configurable serial port The 2123 utilizes high speed USB UARTs with 128
6. ao O 4 A l y y E T A E A ee d 2 a A lpr ATRN 1 i aes on my AI MO A A E O RNS nl 0 lou eda iji 1 52 ka 9 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 Inc 20 SeaLINK SC User Manual Appendix E CAD Drawings 2123 0 138 0 138 0 363 0 363 MU 0 169 2X 0 126 2X ALL DIMENSIONS ARE INCHES 0 124 4X 0 246 l 0 396 0 246 2 856 3 309 3 750 4 250 Sealevel Systems Inc spa SeaLINK SC User Manual Appendix F Comp
7. as a standard COM port by the host system enabling compatibility with legacy software Serial data rates to 921 6K bps are supported To prevent accidental cable disconnection the 2123 integrates a patent pending SeaLATCH locking USB port which 1s fully compatible with standard USB cables When used with the included USB cable with a SeaLATCH USB type B connector the metal thumbscrew provides a secure connection to the device Standard operating temperature range is 0 C to 70 C and extended temperature range 40 C to 85 C is optional Status LEDs display electrical interface selection and serial data activity Features m Serial port is software configurable for RS 232 RS 422 and two wire or four wire RS 485 Electrical interface settings maintained across multiple computers High speed UART with 128 byte Tx FIFO and 384 byte Rx FIFO Automatic hardware RS 485 enable disable DB9M connector serial port supports data rates to 921 6K bps Powered by USB host connection Full modem control signals implemented in RS 232 mode Status LEDs indicate power electrical interface and serial data activity Flexible mounting options DIN rail clips are available as an option Sealevel Systems Inc le SeaLINK SC User Manual Before You Get Started What s Included The SeaLINK SC is shipped with the following items If any of these items is missing or damaged please contact Sealevel for replacement m 2123 USB to RS 232 42
8. the SeaCOM folder under the Start menu Sealevel Systems Inc 15 e SeaLINK SC User Manual On the Port Information tab select the COM port you want to test and click on the Open button pictured below C WinSSD COM3 9600 8 N 1 None Port Information Loopback BERT Terminal Out Timeouts no ene Read Interval Timeout 100 Toggle DTR Read Total Timeout Multiplier 1100 In Read Total Timeout Constant 1 0 CTS Write Total Timeout Multipher 11 AD Settings _ Settings Write Total Timeout Constant 1100 DSA Error Log FI Frame Errors Parity Errors DEL As Buff Owertl Exit Tx Butt Overtl Help Click the Settings button to open the COM Properties menu Change your parameters to 9600 bits per second 8 data bits no parity 1 stop bit and no flow control as pictured below COM3 Properties a Ed Port Settings Bits per second Data bits Parity Stop bits Flow control Restore Defaults coca Aw Click Apply and Ok Sealevel Systems Inc 16 SeaLINK SC User Manual Select the BERT tab and with the loopback connected to the port you wish to test click on the Start button If testing RS 485 be sure that ECHO is enabled Pictured below WinSSD COM3 9600 8 N 1 None Port Information Loopback BERT Terminal Bit Error Rate Test Transmit Frames Receive Frames Byte
9. to run diagnostics If possible have your user manual and current adapter settings ready The Sealevel website is an excellent resource Our homepage is located online at http www sealevel com The most current software updates and user manuals are available via our homepage by clicking on the Drivers or Manuals links located under Technical Support Manuals and software can also be downloaded from the product page for your device The FAQ section of our website answers many common questions Refer to this helpful resource by visiting http www sealevel com faq asp Technical support is available Monday through Friday from 8 00am to 5 00pm EST and can be reached by phone at 1 864 843 4343 or via email at support sealevel com 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 Inc 18 SeaLINK SC User Manual Appendix C Electrical Interfaces 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
10. 2 485 Two Port Serial Interface Adapter CA356 USB Type A to SeaLATCH USB Type B Device Cable 6 in Length Sealevel Software CD SeaCOM software and user manual Optional Items Depending upon your application you are likely to find one or more of the following items useful All items can be purchased from our website http www sealevel com or by calling our sales team at 864 843 4343 Cables DB9F to DB25M RS 232 Extension Cable Item CA 177 The CA177 is a standard AT style RS 232 modem cable with a DB9F connector on one end and a DB25M connector on the other This cable 1s 72 inches in length DB9F to DB9M Extension Cable Item CA 127 The CA 127 allows users to extend a DB9 cable up to six feet The connectors are pinned one to one so the cable is compatible with any device or cable that has DB9 connectors DB9F RS 422 to DB25M RS 530 Cable Item CA176 The CA176 allows users to convert any Sealevel RS 422 DB9 Male asynchronous adapter to an RS 530 DB25 Male pinout This cable is ten inches in length Sealevel Systems Inc sa SeaLINK SC User Manual Terminal Blocks Terminal Block DB9F to 9 Screw Terminals Item TBO05 The TBO5 terminal block breaks out a DB9 connector to nine screw terminals to simplify field wiring of serial connections including RS 422 and RS 485 networks The TBOS is designed to connect directly to Sealevel DB9 serial cards or any cable with a DB9M connector Term
11. 5C USB to Serial Port COMMS 5eaLINK 8M 50 USB to Serial Port COME A 5eaLINK 8M 50 USB to Serial Port COMP A S5eaLINK 8M 50 USB to Serial Port COME 4 SeaLINK 8M 5C USB to Serial Port COM m ae Processors SCSI and RAID controllers E Sound video and game controllers H System devices E Universal Serial Bus controllers O Sealevel Systems Inc 6 SeaLINK SC User Manual Hardware Configuration Electrical Interface Mode Selection The 2123 offers RS 232 RS 422 and RS 485 full and half duplex modes The electrical interface 1s a software selectable feature that can be accessed and changed using the Sealevel SeaCOM driver via Device Manager To select the electrical interface follow the steps below 1 Open Device Manager and locate Ports COM amp LPT following the steps above You should see the 2123 s port listed 2 Select the port by right clicking on it and selecting Properties from the fly out menu The serial port properties menu will appear 3 Click on the Interface Settings tab screenshot of 2833 shown Note The Sealevel SeaCOM driver adds the Interface Settings tab If this tab is missing SeaCOM is not correctly installed SeaLINK 8M SC USB to Serial Port COM3 Properties x General Port Settings Interface Settings Driver Details y SealLINE 8M 50 USB to Serial Port CO M3 E Interface A5 403 Fa 46 Ady anced TA Made Hal Duple
12. SeaLINK SC User Manual ltem Number 2123 SYSTEMS INCORPORATED www sealevel com PO Box 830 Liberty SC 29657 864 843 4343 Table of Contents INTRODUCTION 2255559 sg ena senior NANG Da GG a ABA a DG Gaga Na dap duela nH 1 BEFORE YOU GEE STARTED iio 2 ANAT NO O ID AAA A eaters eat 2 OPTIONAL A II A E 2 INSTALLATION CONFIGURATION e0e0000000000000000000000000000000 0000000000000000 0000000000 0000000000000000 4 SOBTWARE NS TALLA TON ata cti aaa ag aa KE aaa aa ias an aaa 4 HARDWARE INSTALLATION aana aaa a a ee Beneath leas e KN sa o a TONO 5 VERIFYING INSTALLATION er e eel moe 6 HARDWARE CONFIGURATION cccsceccececcsceccececcscecescsceccscesescecesceceecscscscsescesescecescecesescesescesescecs 7 HARDWARE DESCRIPTION aaa aaia aaea 10 SEALATCH MIS aaa aa aa aa a Gaga AAA O Ee OET 11 ELECTRICAL SPECIFICATIONS Aana Na Ega a Na NGGE Ba a AN BAN a ag a 13 CONNECTOR PINOUT asat aga aan at eto KKN ga GN beats as 13 TECHNICAL SPECIFICATIONS esesesesesecesececececeoeocococococococococococococosocosososocoseseseseseseseseseseseo 14 A A 14 ENVIRONMENTAL SPECIFICATIONS 6222525 ese RR 14 POWER REQUIREMENTS scsi tl ete o gi La 14 MANOFACTURIN G e elas 14 APPENDIX A TROUBLESHOOTING 2 ccccccccccccccccccccccccccccccccccccccccccccccccccccccces 15 APPENDIX B HOW TO GET ASSISTANCE ososo0o000000000000000 0000000000000000 0000000000000000 0e0e0ane 18 APPENDIX C ELECTRICAL INTERFACES c
13. byte Tx FIFOs and 384 byte Rx FIFOs The chips feature programmable baud rates and data rates to 921 6K bps Connector Pinouts RS 232 DB9 Male Note Pins 6 9 are no connect RS 485 Two Wire DB9 Male Note Pins 1 2 6 9 are no connect Sealevel Systems Inc 213 SeaLINK SC User Manual Technical Specifications Dimensions Length Width Height AR A ee Environmental Specifications Specification Operating Temperature Range 0 C 70 C 50 C 105 C d d 32 F E 158 F 58 F S 221 F H midit Rane 10 to 90 R H 10 to 90 R H y E Non Condensing Non Condensing Power Requirements This device 1s a high power USB device It must be plugged directly into a USB port on your computer or a self powered hub capable of supplying 200 mA per port Some laptop computers running on battery power and non powered USB hubs may not provide the 200mA necessary to power this device 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 O Sealevel Systems Inc ds SeaLINK SC User Manual Appendix A Troubleshooting The adapter should provide years of trouble free service However in the event that it appears to be functioning incorrectly the following tips can eliminate most common problems without the need to call Technical Suppor
14. csccsccccscesccccscescccccccsccsccccscesccce 19 APPENDIX D ASYNCHRONOUS COMMUNICA TIONS 2 cessscccsscccscccccccccess 20 APPENDIX E CAD DRA WINGS 2123 csccsccccscescccccccsccsccccscesccccscesccccccescesccccscescess 21 APPENDIX F COMPLIANCE NOTICES ccccsscccccccccccccccccccccccccccccccccccccccccccecs 22 FEDERAL COMMUNICATIONS COMMISSION STATEMENT c ceccscecccceccececescecescsceccscecescecescsceces 22 WARRANTS ra ates awoke 23 Sealevel Systems Inc SeaLINK SC User Manual SL9200 Revision 8 2008 Introduction Sealevel s SeaLINK 2123 USB to serial interface adapter offers an easy way to connect a DB9 serial device to a USB port All configuration and electrical interface selections are handled through the driver eliminating the need to open the enclosure to set jumpers or switches The serial port is software configurable for RS 232 RS 422 or RS 485 full and half duplex with the electrical interface settings maintained locally allowing the host computer to be repaired or upgraded without reconfiguring the serial ports Additionally the 2123 can be configured at one computer and deployed to other computers Sealevel SeaCOM USB software drivers and utilities make installation and operation easy for Windows 98SE ME 2000 XP and Vista operating systems Once the software is installed plug the 2123 into an available USB port and the serial port is recognized
15. dental cable disconnection Status LEDs Status LEDs on the front of the 2123 indicate the following information MODE Red or Green Indicates the electrical interface selected o Green indicates RS 232 mode o Red indicates RS 422 or RS 485 mode DATA Green Blinks to indicate data is being transmitted or received EN able Green Lights when the hub is properly powered through the USB port and communication between the device and host has been enabled DB9M Serial Connectors The 2123 includes a single DB9M serial connector with full modem control signals implemented in RS 232 mode Pin outs for the connector are included in the following Electrical Specifications section Sealevel Systems Inc 10 SeaLINK SC User Manual SeaLATCH USB The 2123 integrates a patent pending SeaLATCH USB port which is fully compatible with standard USB cables When used with SeaLATCH locking USB cables the metal thumbscrew provides a secure metal to metal connection and prevents accidental cable disconnection Sealevel incorporates SeaLATCH locking USB ports on many USB I O devices Accidental cable disconnection is the most common point of failure with USB industrial I O devices and SeaLATCH cables and connectors prevents that while being fully compatible with standard USB cables The image below shows the 2123 secured with the included SeaLATCH cable Sealevel Systems Inc le SeaLINK SC User Manual SeaLATCH Locking
16. e the SeaCOM program folder listed You are now ready to proceed with connecting the 2123 to your system Refer to the Hardware Installation section for details Windows NT is not USB aware and thus cannot support this device Sealevel Systems Inc sds SeaLINK SC User Manual Hardware Installation Do not connect the device to a USB port until the software has been successfully installed To install the 2123 plug the device into an available USB port using the supplied USB cable The following instructions were tested with Windows XP and may vary based on your version of Windows Once the device has been connected the Found New Hardware wizard will appear first for the root hub and then for each port that you are installing Follow the instructions on the following page to finish installation The installation will repeat twice for the COM port This 1s a limitation in the way Windows installs external serial devices 1 Click on Install the software automatically followed by the Next button 2 Windows will show a warning message that the hardware has not passed Windows logo testing Click on Continue Anyway Note all applications and drivers have been fully tested to maintain the integrity of your operating system Clicking on Continue anyway will not harm your system in any way 3 Click on Finish Sealevel Systems Inc 25s SeaLINK SC User Manual Verifying Installation
17. f of purchase Return authorization 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 supportOsealevel com Technical Support is available Monday Friday from 8 a m to 5 p m Eastern time Trademarks Sealevel Systems Incorporated acknowledges that all trademarks referenced in this manual are the service mark trademark or registered trademark of the respective company O Sealevel Systems Inc DS SeaLINK SC User Manual
18. inal Block Dual DB9F to 18 Screw Terminals Item TB06 The TB06 terminal block breaks out dual DB9 connectors to 18 screw terminals to simplify field wiring of serial connections including RS 422 and RS 485 networks The TB06 is designed to connect directly to Sealevel dual port DB9 serial cards or any cable with DB9M connectors Adapters and Converters DB9F to RJ45 Modular Adapter Item RJ9S8 The RJ9S8 is a DB9 female to RJ45 adapter It can be configured without tools and it is an excellent choice for using available infrastructure wiring Sealevel Systems Inc Je SeaLINK SC User Manual Installation amp Configuration Software Installation Windows 98 ME 2000 XP Vista Operating Systems 1 Start Windows 2 Insert the Sealevel Software CD in to your CD DVD 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 Click the Install button Type in your part number 2123 or select your adapter from the listing Click the Install Drivers button NY DD Un A The setup file will automatically detect the operating environment and install the proper components To confirm that the SeaCOM driver has been successfully installed click on the Start button and then select All Programs You should se
19. liance Notices 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 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 EN55024 Information technology equipment Immunity characteristics Limits and methods of measurement EN60950 1EC950 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 i
20. n which case the user may 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 Inc pe SeaLINK SC User Manual 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 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 proo
21. s Checked Bit Errors Sune Losses Tx Data Rate As Data Rate Sine Status Test Time 000 00 00 If the COM port is working properly the green light will glow and the Transmit Frames and Receive Frames will increase The Tx and Rx Data O D D 0 0 bps 0 bps Mo Data 000 Out Toggle ATS Toggle DTR CTS DSR RI DCD Exit Hep Rates will show the calculated data rate Pictured below C WAnS5D COM 9600 E N 1 None Port Information Loopback BERT Terminal Bit Error Rate Test Transmit Frames Receiwe Frames Bytes Checked Bit Errors Syne Losses Tx Data Rate Rs Data Rate Sync Status Test Time 000 00 15 You can continue testing this port with different configurations or 0 S600 bps S600 bps Reset Stats proceed with testing other ports if necessary If these steps do not solve your problem please call Sealevel Systems Technical Support 864 843 4343 Our technical support is free and available from 8 00 AM E RTS Toggle DTR JO a DSR Al Dco O E wit to 5 00 PM Eastern Time Monday through Friday For email support contact supportO sealevel com O Sealevel Systems Inc ITa SeaLINK SC User Manual Appendix B How To Get Assistance Begin by reading the Troubleshooting Guide in Appendix A This will help solve most common problems When calling for technical assistance please have the device installed and ready
22. t 1 Ensure that the Sealevel Systems SeaCOM software has been installed on the machine so that the necessary files are in place to complete the installation To confirm installation click on the Windows Start button and then select All Programs You should see the SeaCOM program folder listed Note The SeaCOM driver must be installed before the adapter is connected to your computer Check to make sure that USB support is enabled and functioning properly in the operating system The presence of the Universal Serial Bus controllers listing in Device Manager will confirm that USB support is enabled in Windows 98SE ME 2000 XP or Vista operating systems While Device Manager is open locate the COM ports described under Verifying Installation in the Installation and Configuration section of this manual Once you have confirmed that the COM ports are listed in Device Manager you can use the Sealevel WinSSD utility and a loopback plug to test communications Detailed help is included in the WinSSD utility If you have a loopback plug put it on the DB9 connector that you want to test If you don t have a loopback plug contact Technical Support for assistance If you re testing RS 485 mode you ll need to have ECHO enabled otherwise the following test will fail Refer to the Hardware Configuration section for instructions on enabling ECHO To test communications launch the WinSSD utility in
23. to Serial Port COM3 Interface AS 485 AS 465 Advanced Configuration Tx Mode M Enable Termination Enable Echo Sealevel Systems Inc 8 SeaLINK SC User Manual Echo The RS 485 Echo is the result of connecting the receiver inputs to the transmitter outputs Each time a character is transmitted it is also received This can be beneficial if the software can handle echoing i e using received characters to throttle the transmitter but 1t can also confuse the system if the software cannot support echoing Echo configuration is software selectable for half duplex RS 485 By default ECHO is disabled and this configuration can be set by placing a check next to Enable Echo in the RS 485 Advanced Configuration field as pictured below SeaL INK 8M SC USB to Serial Port COM3 Properties a General Port Settings Interface Settings Driver Details y SeaLINK 8M 5C USE to Serial Port COMA T Interface Rs 485 AS 4 65 Advanced Configuration Tx Mode Enable Termination e Enable Echo Sealevel Systems Inc 9 SeaLINK SC User Manual Hardware Description SeaLATCH USB Port The 2123 integrates a patent pending SeaLATCH USB port which is fully compatible with standard USB cables When used with the included USB cable with a SeaLATCH type B USB connector the metal thumbscrew provides a secure metal to metal connection to the device and prevents acci
24. x b Enable Termination Enable Echo 4 Select the appropriate electrical interface for your application and click on OK Note The electrical interface settings are maintained across multiple computers Once the SeaCOM software driver has been installed on target computers the 2123 can easily be moved from one computer to another without having to configure the electrical interface at each computer O Sealevel Systems Inc Te SeaLINK SC User Manual Interface Biasing 1K ohm pull up pull down combination resistors bias the receiver inputs and are handled automatically for each mode The pull up PU and pull down PD resistor settings are shown in the table below PU Setting PD Setting RS 232 Always Off Always Off RS 422 Always Off Always Off RS 485 Always On Always On Line Termination A 120 ohm resistor is across the RS 422 485 input If multiple devices are configured in an RS 485 network only the devices on each end should have the termination in place Termination configuration is software selectable for both full and half duplex RS 485 By default line termination is disabled and this configuration can be set by placing a check next to Enable Termination in the RS 485 Advanced Configuration field as shown in the image below SeaLINK 8M SC USB to Serial Port COM3 Properties ajx General Port Settings Interface Settings Driver Details UY SeaLINK 8M SC USB
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