B&B Electronics High Speed Asynchronous to Synchronous Converter 2011 User's Manual
Contents
1. None required uses power from data and control signals Temperature Range 0 60 C 32 140 F Altitude 0 15 000 feet Humidity Up to 95 non condensing Dimensions 3 2 x 2 0 x 0 75 Weight 2 oz 6 2011AS3297 Manual B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 APPENDIX B ASYNCHRONOUS PORT CONNECTIONS CONFIGURED AS DCE Pin Name Description 1 FG Frame Ground connected straight to synchronous port 2 TXD Transmit Data to 2011 data input from asynchronous port Input to the 2011 power supply 3 RXD Receive Data from 2011 data output to asynchronous port 4 RTS Request to Send to 2011 input to the power supply 5 CTS Clear to Send from 2011 connected straight through to synchronous port 6 DSR Data Set Ready from 2011 connected straight through to synchronous port 7 SG Signal Ground connected straight through to synchronous port 8 CD Carrier Detect from 2011 connected straight through to synchronous port 9 DCV Connected straight through to synchronous port 10 DCV Connected straight through to synchronous port 20 DTR Data Terminal Ready to 2011 input to power supply 22 RI Ring Indicator from 2011 connected straight through to synchronous port 2011AS3297 Manual 7 B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 APPENDIX C SYNCHRONOUS PORT CONNECTIONS CONFIGURED AS DTE Pin2. YILNNOO M90109 X94 1 04 ONAS 1 04 5 P Sisa a a 1 V 8 Sx1 Sx1 a oxu 3 YaLYSANOD a 8 YSALYAANOD aj SNAS lt gt ONASV H 8 2 al oal a B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 2011AS3297 Manual
3. Name Description 1 FG Frame Ground connected straight to asynchronous port 2 TXD Transmit Data from 2011 data output to synchronous port 3 RXD Receive Data to 2011 data input from the synchronous port input to 2011 power supply 4 RTS Request to Send from 2011 4 bit delay from asynchronous port 2011 waits 4 bits before dropping RTS to the synchronous port this facilitates use in a polling environment 5 CTS Clear to Send to 2011 connected straight through to asynchronous port 6 DSR Data Set Ready to 2011 connected straight through to asynchronous port 7 SG Signal Ground connected straight through to asynchronous port 8 CD Carrier Detect to 2011 connected straight through to asynchronous port 9 DCV Connected straight through to asynchronous port 10 DCV Connected straight through to asynchronous port 15 TXC Transmit clock to 2011 used to synchronize data conversion from 2011 to synchronous port 17 RXC Receive clock to 2011 used to synchronize data conversion from 2011 to synchronous port 20 DTR Data Terminal Ready from 2011 input to power supply 22 RI Ring Indicator to 2011 connected straight through to asynchronous port 8 2011AS3297 Manual B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 BLOCK DIAGRAM APPENDIX D A1ddns AS YYa HLONAT SONILL3S HOLIMS
4. H 815 433 5100 FAX 815 434 7094 2 0 GENERAL INFORMATION Thank you for your purchase of this B amp B Electronics product This product has been thoroughly inspected and tested and is warranted for one year parts and labor If any questions or problems arise during installation or use of this product please do not hesitate to contact B amp B Electronics Technical Support at 815 433 5100 2 1 FEATURES e Conforms to CCITT V 22 and V 14 Standards e Lets asynchronous terminals communicate with synchronous modems and multiplexers Accepts character lengths to 11 bits Requires no AC power or batteries Supports data rates to 64 Kbps Automatically adjusts synchronous data rates Miniature size Plugs directly into async or sync DB 25 port Accepts external clocking Made in the USA 2 2 DESCRIPTION The B amp B Model 2011 asynchronous to synchronous converter plugs directly into a local asynchronous DTE terminal PC etc and connects that DTE via RS 232 cable to a synchronous DCE When the same set up is installed on the remote end the local and remote DTEs can communicate over the synchronous link Drawing power from either the synchronous or asynchronous RS 232 interface the Model 2011 needs no AC power or batteries to operate and supports RS 232 data rates from 64 Kbps Because the Model 2011 automatically adjusts the synchronous data rate to match the asynchronous DTE s output rate no data rate strapping is necessary The
5. Model 2011 derives clocking externally from the clock of the synchronous DCE and imposes no limit on data block size Characters may be up to 11 bits long Measuring only 3 2 x 2 0 x 75 the Model 2011 is housed in a sturdy ABS plastic case It comes fully equipped with a DB 25 male connector and a DB 25 female connector which plug directly into the synchronous and asynchronous ports 2 2011AS3297 Manual B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 3 0 CONFIGURATION The Model 2011 is configured using internal DIP switches Figure 1 shows the location of the Model 2011 s configuration switches Configuration Switches Sync Male Connector Async Female Connector Figure 1 Switch locations on the Model 2011 PC board 3 1 ACCESSING INTERNAL SWITCHES The Model 2011 s DIP switches are mounted on the PC board To access the PC board insert the blade of a small flathead screwdriver into the slot on one side of the Model 2011 s case then pop the case open by twisting the blade Repeat on the other side of the case You should now be able to pull the case halves apart and access the DIP switches on the PC board Once you have set the switches properly align the case halves and snap them together 3 2 SETTING INTERNAL SWITCHES Three DIP switches are used to configure the Model 2011 two switches set the character length and one switch matc
6. Not Recommended for New Installations Please contact Technical Support for more information High Speed Asynchronous to Synchronous Converter Model 2011 Documentation Number 2011AS3297 B amp B Electronics Mfg Co Inc 707 Dayton Road P O Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 433 5105 Internet http www bb elec com orders bb elec com support bb elec com B amp B Electronics September 1997 2011AS3297 Manual Cover Page B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 Table of Contents 1 0 WARRANTY 1 1 RADIO AND TV 1 2 SERVICE u 3 0 CONFIGURATION michereien idii aniani aaner 3 1 ACCESSING INTERNAL SWITCHES 3 2 SETTING INTERNAL SWITCHES 3 2 1 CHARACTER LENGTH a 3 2 2 EXTENDED SIGNALING RATE ESR 40 INSTALLATO N gun u 4 1 CONNECTING THE ASYNCHRONOUS PORT 4 2 CONNECTING THE SYNCHRONOUS PORT APPENDIX A SPECIFICATIONS a APPENDIX B ASYNCHRONOUS PORT CONNEC
7. TIONS CONFIGURED AS DCE u APPENDIX C SYNCHRONOUS PORT CONNECTIONS CONFIGURED AS APPENDIX D BLOCK DIAGRAM a 2011AS3297 Manual Table of Contents B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 1 0 WARRANTY INFORMATION B amp B Electronics warrants all Model 2011 components to be free from defects and will at our option repair or replace the product should it fail within one year from the first date of shipment This warranty is limited to defects in workmanship or materials and does not cover customer damage abuse or unauthorized modification If this product fails or does not perform as warranted your sole recourse shall be repair or replacement as described above Under no condition shall B amp B Electronics be liable for any damages incurred by the use of this product These damages include but are not limited to the following lost profits lost savings and incidental or consequential damages arising from the use of or inability to use this product B amp B Electronics specifically disclaims all other warranties expressed or implied and the installation or use of this product shall be deemed an acceptance of these terms by the user 1 1 RADIO AND TV INTERFERENCE The Model 2011 generates and uses radio frequency energy and if not installed and used properly tha
8. hes the signaling rates of the asynchronous and synchronous ports Figure 2 shows the orientation of the DIP switches ON ON ON ON uum OFF OFF OFF Figure 2 DIP switch orientation 2011AS3297 Manual 3 B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 3 2 1 CHARACTER LENGTH Switches SW1 1 and SW1 2 operate jointly to set the asynchronous character length The asynchronous character length setting is determined by combining the number of start stop data and parity bits that make up each character generated by the asynchronous DTE The Model 2011 does not care about the composition of each asynchronous character only its length is significant Below are the combined switch settings that set the four possible asynchronous character lengths SW 1 1 SW 1 2 8 bit OFF ON 9 bit ON ON 10 bit OFF OFF 11 bit ON OFF Default settings 3 2 2 EXTENDED SIGNALING RATE ESR The position of switch SW1 3 ensures that the asynchronous input data rate matches the synchronous output data rate When switch SW1 3 is set to OFF the asynchronous bit rate must match the synchronous clock rate to a tolerance of 2 5 to 1 When switch SW1 3 is set to ON the asynchronous bit rate must match the synchronous clock rate to a tolerance of 2 5 to 2 3 SW 1 3 2 5 to 1 OFF 2 5 to 2 3 ON Default settings NOTE Switch SW1 4 is not used 4 2011AS3297 Manual B amp B Elec
9. t is in strict accordance with the manufacturer s instructions may cause interference to radio and television reception The Model 2011 is designed to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interference will not occur in a particular installation If the Model 2011 does cause interference to radio or television reception which can be determined by disconnecting the RS 232 interface the user is encouraged to try to correct the interference by one or more of the following measures moving the computing equipment away from the receiver reorienting the receiving antenna and or plugging the receiving equipment into a different AC outlet such that the computing equipment and receiver are on different branches 1 2 SERVICE All warranty and non warranty repairs must be returned freight prepaid and insured to B amp B Electronics All returns must have a Return Materials Authorization number on the outside of the shipping container This number may be obtained from B amp B Electronics Customer Service at 815 433 5100 Packages received without an RMA number will not be accepted B amp B Electronics technical staff is also available to answer any questions that might arise concerning the installation or use of your Model 2011 Technical Service hours 8AM to 5PM CST Monday through Friday 2011AS3297 Manual 1 B amp B Electronics PO Box 1040 Ottawa IL 61350 P
10. tronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 4 0 INSTALLATION The Model 2011 is designed to be used in pairs with one unit installed between an asynchronous DTE and a synchronous DCE on either end of a synchronous communication link Figure 3 illustrates a typical Model 2011 installation Async DTE Model 2011 Sync DCE Figure 3 Typical Model 2011 application 4 1 CONNECTING THE ASYNCHRONOUS PORT The asynchronous port of the Model 2011 is a DB 25 female and is configured as DCE Therefore it wants to talk to a DTE device such as a terminal or PC The Model 2011 may be plugged directly into the DB 25 serial port of a DTE or connected via straight through cable 4 2 CONNECTING THE SYNCHRONOUS PORT The synchronous port of the Model 2011 is a DB 25 male and is configured as DTE Therefore it wants to talk to a DCE device such as a modem or multiplexer The Model 2011 may be plugged directly into the DB 25 serial port of a DCE or connected via straight through cable 2011AS3297 Manual 5 B amp B Electronics PO Box 1040 Ottawa IL 61350 PH 815 433 5100 FAX 815 434 7094 APPENDIX A SPECIFICATIONS Data Rates Up to 64 Kbps Clocking Provided by modem or multiplexer Buffer 4 bit RTS override feature empties buffers before dropping RTS Data Transmission Full or half duplex Connectors DB 25 female on asynchronous port DB 25 male on synchronous port Power Supply
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