USER MANUAL
Contents
1. are available for point to point applications only 5 2 1 LOCAL ANALOG LOOPBACK LAL The Local Analog Loopback LAL test checks the operation of the local Model 1140A and is performed separately on each unit Any data sent to the local Model 1140A in this test mode will be echoed returned back to the user device For example characters typed on the keyboard of a terminal will appear on the terminal screen To per form a LAL test follow these steps A Activate LAL This may be done in one of two ways First by moving the front panel toggle switch DOWN to Second by rais ing pin 18 on the interface Note Make sure DIP switch SW2 8 is OFF Once LAL is activated the Model 1140A transmit output is con nected to its own receiver The test LED should be lit B Verify that the data terminal equipment is operating properly and can be used for a test If a fault is indicated call a technician or replace the unit C Perform a BER bit error rate test on each unit If the BER test equipment indicates no faults but the data terminal indicates a fault follow the manufacturer s checkout procedures for the data terminal Also check the interface cable between the terminal and the Model 1140A 5 2 2 REMOTE DIGITAL LOOPBACK RDL The Remote Digital Loopback RDL test checks the performance of both the local and remote Model 1140As and the communication link between them Any characters sent to the remote Model 11402. 4 Data Rate Setting Switches 51 1 through 51 4 are set in combination to determine the asynchronous and synchronous data rate for the Model 1140A 51 1 51 2 51 3 51 4 Setting On On On On 1 2 Kbps Off On On On 1 8 Kbps On Off On On 2 4 Kbps Off Off On On 3 6 Kbps On On Off On 4 8 Kbps Off On Off On 7 2 Kops On Off Off On 9 6 Kbps Off Off Off On 14 4 Kbps On On On Off 19 2 Kbps Off On On Off 28 8 Kbps On On Off Off 38 4 Kbps Off On Off Off 57 6 Kbps 51 5 and 51 6 Clock Source Switches S1 5 and S1 6 are set in combination to determine the transmit clock source for the Model 1140A 51 5 51 6 Setting On On Internal transmit clock Off On Receive recover clock On Off External transmit clock 51 7 Asynchronous Synchronous Mode The setting for switch S1 7 determines whether the Model 1140A is in asynchronous or synchronous operating mode 51 7 Setting On Asynchronous Off Synchronous 51 8 Carrier Control Method The setting for switch S1 8 determines whether the carrier is con stantly on or controlled by RTS This setting allows for operation in switched carrier multipoint and or hardware handshaking applications 51 8 Setting Off Constantly On On Switched Carrier 3 3 CONFIGURATION SWITCH SET 52 The DIP switches on S2 set word length extended signaling rate RTS CTS delay and V 52 and V 54 diagnostic test S2 SUMMARY TABLE Position Function Factory Default 2 1 Word Leng
3. A in this test mode will be returned back to the originating device For example characters typed on the keyboard of the local terminal will appear on the local terminal screen after having been passed to the remote Model 1140A and looped back To perform an RDL test follow these steps A Activate RDL This may be done in two ways first by moving the front panel toggle switch UP to RDL Second by raising pin 21 on the interface Note Make sure SW2 8 is OFF B Perform a BER bit error rate test on the system If the BER test indicates a fault and the Local Analog Loopback test was successful for both Model 1140As you may have a problem with the fiber line between the modems You should then check the fiber line for proper connections and continuity 10 5 2 3 USING THE V 52 BER TEST INDEPENDENTLY The V 52 BER test can be used independently of the V 54 loop back tests This requires two operators one to initiate and monitor the test at the local Model 1140A and one at the remote Model 1140A To use the V 52 BER test by itself both operators should simultaneously follow these steps 1 Locate the 511 511E toggle switch on the front panel of the 1140A and move it DOWN This activates the V 52 BER test mode and transmits a 511 test pattern to the other unit If any errors are pres ent the receiving modem s red Error LED will blink sporadically Note For this test to function the 511 swi
4. S 232 interface Figure 5 shows the location of the fiber connections on the Model 1140A s rear panel DIP Switches This Side RX Figure 5 Close up of ST and SMA connections 4 1 FIBER CONNECTIONS The Model 1140A short range modems are designed to work in pairs You will need one at each end of a dual fiber cable This cable connects to each Model 1140A using either an ST or an SMA connec tor Figure 6 shows a close up of each of these connector types ee Figure 6 Close up of ST and SMA connections Alignment pin faces down 4 2 RS 232 CONNECTION The Model 1140A is designed to remain in DCE mode 5 0 OPERATION Once you have configured each Model 1140A properly and con nected the fiber and RS 232 cables you are ready to operate the units This section describes the LED status monitors the V 52 and V 54 diagnostics and the power up process NOTE The Model 1140A optical power output was increased Therefore Model 1140A is not compatible with Model 1140 Error LED Test LED chal 5 2 TEST MODES The Model 1140A offers two V 54 test modes to evaluate the con dition of the modems and the communication link These tests can be activated physically from the front panel or via the interface Note V 54 test modes on the Model 1140A
5. USER MANUAL MODEL 1140A Miniature Fiber Optic Modem w V 54 Diagnostics PATTON FlectronicsTo ISO Part 07M1140A A SALES OFFICE 301 975 1000 evised 10 04 99 TECHNICAL SUPPORT RTIFIED 301 975 1007 180 9001 http Awww patton com Certified Company 1 0 WARRANTY INFORMATION Patton Electronics warrants all Model 1140A 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 modifi cation 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 Patton 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 consequen tial damages arising from the use of or inability to use this product Patton 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 1140A generates and uses radio frequency energy and if not installed and used properly that is in strict accordance with the manufactu
6. a and control signals 0 60 C 32 140 F 0 15 000 feet Up to 95 non condensing 2 02 23 42 x 2 10 x 0 73 12 APPENDIX PATTON ELECTRONICS MODEL 1140A RS 232 PIN CONFIGURATIONS APPENDIX C PATTON ELECTRONICS MODEL 1140A BLOCK DIAGRAM DIRECTION From Model 1140A From Model 1140A To Model 1140A To Model 1140A To Model 1140A Transmit Clock TC 15 eo Receiver Clock RC 17 E7 J Data Term Ready 20 e DCE STANDARD SETTING FG Frame Ground TD Transmit Data D Receive Data 5 Request to Send S 1 2 ma m 5 CTS Clear to Send 6 7 8 R R Local Loop LL 18 eo 0e 9 DSR Data Set Ready 7 SG Signal Ground DC Remote Loop RL 21 DIRECTION To Model 1140A From Model 1140A To Model 1140A From Model 1140A From Model 1140A D Data Carrier Detect From 1140A 13 Y29019 VOOr LL 1 ok Grisaws i OL vid a E Copyright 1998 Patton Electronics Company All Rights Reserved 14 1141 ONY YLA
7. hnical Service hours 8AM to 5PM EST Monday through Friday 2 0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product This product has been thoroughly inspected and tested and is warrant ed for One Year parts and labor If any questions or problems arise during installation or use of this product please do not hesitate to con tact Patton Electronics Technical Support at 301 975 1007 2 1 FEATURES e Supports async or sync communication over dual optical fibers V 52 and V 54 diagnostics Data rates to 57 6 Kbps Range to 3 5 miles Immune to RFI EMI noise ground loops and transient surges e Easily accessible Diagnostic amp Configuration Switches e Switch selectable carrier control Requires no AC power or batteries e Two easy to read status indicators e Male or female DB 25 and SMA or ST connectors available 2 2 DESCRIPTION The Patton Model 1140A miniature dual fiber optic modem brings fiber to the desktop Combining the inviolability of fiber with the trou bleshooting capabilities of V 52 and V 54 diagnostics the Model 1140A is the best choice for your most critical RS 232 links The Model 1140A operates async or sync supports data rates to 57 6 Kbps and plugs directly into a workstation s RS 232 port Like all fiber optic modems the Model 1140A is inherently immune to RFI EMI noise ground loops and transient surges The carrier may be switch selected as either C
8. ontinuously or Controlled by RTS while an easily accessible DCE DTE switch eliminates the need for cumbersome RS 232 crossover cables Two easy to read LED indica tors monitor the Error and Test modes Drawing all necessary power from the RS 232 interface the Model 1140A requires no AC power or batteries to operate Measuring only 3 42 x 2 10 x 73 the Model 1140A is able to fit into tight installation spaces On the RS 232 side the Model 1140A comes equipped with either a male or female DB 25 connector on the fiber side it is available with a choice of SMA or ST connectors 3 0 CONFIGURATION The Model 1140A is simple to install and is ruggedly designed for excellent reliability just set it and forget it The following instructions will help you set up and install the Model 1140A properly If you have any questions don t hesitate to call Patton s Technical Support Hotline at 301 975 1007 9 5 PM EST 3 1 CONFIGURATION SWITCHES The Model 1140A uses a unique set of 16 external mini DIP switches that allow configuration to an extremely wide range of applica tions These 16 DIP switches are grouped in two eight switch sets and are externally accessible from the underside of the Model 1140A see Figure 1 Since all configuration DIP switches are externally accessi ble there is no need to open the Model 1140A s case for configu ration The configuration switches allow you to select data rates clocking me
9. rer s instructions may cause interference to radio and television reception The Model 1140A has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules which are designed to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interfer ence will not occur in a particular installation If the Model 1140A does cause interference to radio or television reception which can be deter mined by disconnecting the RS 232 interface the user is encouraged to try to correct the interference by one or more of the following meas ures moving the computing equipment away from the receiver re ori enting 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 pre paid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping contain er This number may be obtained from Patton Electronics Technical Service at 301 975 1007 Packages received without an RMA num ber will not be accepted Patton Electronics technical staff is also available to answer questions that might arise concerning the installation or use of your Model 1140A Tec
10. tch on both Model 1140As must be on 2 If the test indicates no errors are present move the V 52 toggle switch UP activating the 511 E test with errors present If the test is working properly the receiving modem s red Error LED will glow A successful 511 E test will confirm that the link is in place and that the Model 1140A s built in 511 generator and detector are working prop erly 5 3 POWER UP Once the Model 1140A is properly installed it should operate transparently as if it were a standard cable connection Since operat ing power is derived from the RS 232 data and control signals there is no ON OFF switch All data signals from the RS 232 interface are passed straight through 11 APPENDIX A PATTON ELECTRONICS MODEL 1140A Transmission Line Transmission Mode Interfaces Data Rates Distance RTS CTS Delay Receiver Sensitivity Coupled Power Output Optic Wavelength LED Indicators Connectors Power Supply Temperature Range Altitude Humidity Weight Dimensions SPECIFICATIONS Dual optical cable Async or sync half or full duplex EIA RS 232 CCITT V 24 0 57 6Kbps 3 5 miles over continuous fiber Switch selectable No delay 9 0 mS 79 5 mS 38 dBm gt 25dBm 850 nm Carrier Detect and Fiber Optic Output DB 25 male or female on RS 232 side ST or SMA connectors on fiber side No external power required uses power from RS 232 dat
11. th 52 2 Word Length Off 52 3 Extended Signaling Rate Off 2 5 to 2 3 52 4 RTS CTS Delay On 52 5 RTSICTS Delay On mae 2 6 Future Use 52 7 Future Use 2 8 V 52 V 54 Tests Off Enable Figure 4 Summary of DIP switch default settings for S2 52 1 and 52 2 Word Length Switches S2 1 and S2 2 are set in combination to determine the word length for asynchronous data including start and stop bits 52 1 52 2 Setting Off On 8 bits On On 9 bits Off Off 10 bits On Off 11 bits 52 3 Extended Signaling Rate The setting for switch S2 3 determines the range of variability the Model 1140A looks for in asynchronous data rates i e the actual variance from a given frequency level the Model 1140A will tolerate 52 3 Setting Off 2 5 to 1 Basic On 2 5 2 3 Extended 52 4 S2 5 RTS CTS Delay The combined settings for switches S2 4 and S2 5 determine the amount of delay between the time the Model 1140A sees RTS and when it sends CTS Options are no delay 7 ms and 53 ms 52 4 52 5 Setting On On 7mS Off On 53 mS On Off No delay Off Off No delay 52 8 V 54 Loopback Test Enable To reset the V 54 circuit set switch S2 6 to the ON position then back to the OFF position 52 8 Setting Off V 54 Enable On V 54 Disable 4 0 INSTALLATION The Model 1140A is easy to install After configuring the DIP switches simply connect the two fiber cables and then connect the R
12. thods V 52 amp V 54 tests word lengths extended signaling rates async or sync mode The drawings text and tables on the following pages describe all switch locations positions and functions HNHH 5152 Configuration Switches Figure 1 Model 1140A Configuration Switches External Position The Model 1140A has two sets of eight switches yielding 16 total DIP switches The two sets will be referred to as S1 and S2 As Figure 2 shows the orientation of all DIP switches is the same with respect to ON and OFF positions ON ON 12345678 Figure 2 Close up of DIP switches showing and OFF positions 3 2 CONFIGURATION SWITCH SET S1 The DIP switches on S1 set data rate clock source async sync mode and carrier control method The default settings are summarized in the table below S1 SUMMARY TABLE Position Function Factory Default 51 1 Data Rate On 1 2 Data Rate Off 9 600 bps 1 3 Data Rate Off 1 4 Data Rate On 1 5 Clock Source On 1 6 Clock Source On 51 7 Async Sync On Async 1 8 Carrier Control Off Constantly On Figure 3 Summary of DIP switch default settings for set S1 51 1 through 51
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