User Manual: 5843HRT, 5844HRT, 5843SHRT and
Contents
1. 0 LI rog 1 62 69 60 62 62 0 Q NNN M EN 1 _ 1 Os 1 Models 5843 5844 5843S 5844S RS232 or TTL 1 1 INTRODUCTION DYMEC Models 5843HRT 5843SHRT 5844HRT and 5844SHRT are data communication Link Repeaters which allow the replacement of copper wire with fiber optic cable Link Repeaters simply convert electrical signals to light for transmission then when received convert the light signals to back electrical This is done for RS 232 or TTL formats Link Repeaters are passive to software protocol They are not addressable in communication protocols and do not provide any control logic capability to support communication protocols Link Repeaters are designed with several features that allow easy installation and flexibility in configuring for various communication systems Models 5843HRT and 5844HRT are similar except for the method in which they are powered Models 5843SHRT and 5844SHRT have the same features and functionality described for the Models 5843HRT and 5844HRT respectively with the exception that they have single mode optics for use with single mode fiber cable NOTE This manual makes reference to the Model 5843HRT and Model 5844HRT when describing features and functionality of the Link Repeaters These descriptions generally apply to the Model 5843SHRT and Model 5844SHRT as we2. 1 2 Models 5843 5844 5843S 5844S RS232 or TTL Pin 8 Output Option Switch Switch 5B Models 5843 and 5844 Links are provided with this switch to allow users who require more drive current on the TTL output pin pin 8 to accomplish this Selections are High or Low Consideration should be given that the current value selected is appropriate for the input of the device being connected to this data channel Test Mode Switch Models 5843 and 5844 are provided with this switch to allow users who wish to test the fiber connections of the link with a built in diagnostic mode This mode sends a 100Hz signal out the transmit port as well as looping back the copper port pins 2 and 3 for diagnostic purposes Handshaking Switch Each Link Repeater is provided with this switch to easily adapt the device for use where the connected IED needs to see active electrical levels on certain handshaking pins but does not require full handshaking implementation Simplex Communication Transmit only or receive only communications Half Duplex Communication Sequential transmit and receive communications Full Duplex Communication Simultaneous transmit and receive communications T Transmit optical port TE Diagnostic LED that illuminates when the Link Repeater is receiving an electrical transmit from its IED TO Diagnostic LED that illuminates when the Link Repeater is transmitting a signal optically R Receive optical port RE Dia
3. Industrial Fiber Optic Link Repeaters Models 5843HRT and 5844HRT Models 5843SHRT and 5844SHRT User Manual UM5843 REV AD 2 5 00 USD MI 25 Commerce Way 1 North Andover MA 01845 amp 978 688 8807 FAX 978 688 8771 GarrettCom www garrettcom com Industrial Networking at Its Best Printed in USA 3 44 0003 00 Warnings Cautions and Notes Used in this Publication Warning notices are used in this publication to emphasize that hazardous voltages currents or other conditions that could cause personal injury exist in this equipment or may be associated with its use In situations where inattention could cause either injury or damage to equipment a Warning notice is used es CAUTION Caution notices are used where equipment malfunction is possible if is not taken NOTE APPLICATION NOTE Notes and Application Notes call attention to information that is especially significant to understanding and operating the equipment This document is based on information available at the time of its publication While efforts have been made to be accurate the information contained herein does not purport to cover all details or variations or to provide for every possible contingency in connection with installation operation or maintenance DYMEC assumes no obligation of notice to holders of this document with respect to changes subsequently made DYMEC makes no representation or warranty e
4. 30 Volts Max gt 300 Ohms 5 V min into 3000 Ohms 0 to 5V 67 or 207 Ohm Source Impedance 40 to 70 C 40 to 85 C 4 1 Watts 340 mA 12V 10 2 BTU 9 Ozs 2 0W X 5 1L X 1 3H Power Transmit Fiber Transmit Electrical Receive Fiber Receive Electrical 5 2 5844SHRT 19 dB 14 5 dBm peak 33 5 dBm peak 9 125 Single Mode 1300nm ST Single Mode 9 13ym DTE DCE AC DC Coupled Link Repeat Pin 8 Drive Current Pin 6 5 V DSR or CTS pull up Diagnostic Mode DC to 250K bps Asynchronous simplex or Full Duplex up to 30K meters 9 125 Cable 0 3dB km 10 E9 Max 4 usec Max 400 nsec Max EIA RS232 CCITT v24 9 pin D Type Female gt 30000hms 30 Volts Max gt 300 Ohms 5 V min into 3000 Ohms 0 to 5V 67 or 207 Ohm Source Impedance 40 to 70 C 40 to 85 C 5 5 Watts 50 mA 90 250 V H 340 mA 18 60 V L 12 3 BTU 17 Ozs 4 1W X 5 1L X 1 3H Power Transmit Fiber Transmit Electrical Receive Fiber Receive Electrical 5 2 Mechanical Dimensions of 5843HRT and 5843SHRT GND STUD 5r 1 12 VOLTS DC Only 6 32 THREAD SST DYM E MODEL 5843 LINK REPEATER RS232 MADE IN U S A 17 REMOVABLE ACCESS PLATE TYPE ST 9 PIN D CONNECTOR WITH CONNECTOR 4 40 STANDOFF HARDWARE NOTE DIMENSIONS ARE IN INCHES 5 3 Mechanical Dimensions of the 5844 and 5844SHRT 6 32 THREAD SST 5 14 1 25 Ground Stud DYMI EC MODEL 5844 LINK
5. Aging Loss less than 3 dB Model 5843HRT and Model 5844HRT Link Repeater optical ports are designed for ST type terminations and are compatible with multi mode FOC ranging from 50 to 200 Model 5843SHRT and Model 5844SHRT Link Repeater optical ports are designed for ST type terminations and are compatible with single mode FOC ranging from 5 to 13 Models 5843 5844 5843S 5844S RS232 or TTL CONFIGURATIONS OPERATION AND INSTALLATION Model 5843HRT and Model 5844HRT Link Repeaters can be connected in a Point to Point configuration in a Master Slave Loop in a Peer to Peer Loop or an optical bus depending on the needs of the overall communication system These models are designed to accept electrical inputs per RS 232 and TTL standards RS 232 data communication signals are always on pins 2 or 3 transmit or receive pin assignment is based upon the setting of the DTE DCE switch of the Link Repeater s 9 Pin D connector For TTL data communication the transmit Link Repeater receive is on either pin 2 or 3 depending on the setting of the DTE DCE switch and the receive Link Repeater transmit is on pin 8 When the Link Repeater has a high TTL potential above 2 4 volts on its transmit pin it will transmit optically All signal voltage levels on the 9 Pin D connector are referenced to pin 5 of the D connector NOTE Pin 8 always has the TTL data output signal present even during RS 232 communication Be su
6. D connector 3 4 The Model 5844HRT Model 5844SHRT can be ordered to accommodate 24 to 48 Vdc power Model 5844HRT is provided with a ground stud on the side of the case An appropriate earth ground must be connected to this stud before power is applied to the unit The internal surge withstand protection inside of the unit uses this ground stud as a sink for power surges If the unit is not properly grounded it may store a charge until a path to ground becomes available The lowest impedance to ground is recommended to avoid a ground potential rise WARNING When installing a Model 5844HRT or Model 5844SHRT Link Repeater an earth Ground must be attached to the Ground Stud on the side of the case before connecting to power Failure to follow this procedure may result in electrical shock to personnel 3 5 OPTIONAL STATION POWER VOLTAGES Models 5844HRT and 5844SHRT can be ordered to be powered by 24 to 48 Vdc This modification is indicated by the suffix L added to the Model number i e 5844HRT L When ordered with either of these options the unit has that DC voltage rating only and is Surge Withstand Protected to IEC 61000 4 4 EN61000 4 5 Standard and ANSI IEEE C37 90 1 1989 3 6 TYPE OF COMMUNICATION Model 5843HRT and Model 5844HRT Link Repeaters support the following types of asynchronous communications Simplex Transmission only or receive only Half Duplex Sequential transmit and receiv
7. that may be needed 4 Connect the Fiber Optic Cables T of one device to R of the next device in the loop Continue around the loop back to the Master to close the loop 2 7 Models 5843 5844 5843S and 5844S RS232 or TTL 5 Connect power to the Link Repeater as follows A If the unit is to be powered through the D connector 9 to 15 VDC on pin 9 referenced to pin 5 then the unit is energized when it is connected to the D connector the power LED will illuminate If the unit is to be powered through the power connector Connect the power leads and the power connector and then energize the power source The unit is now powered the power LED will illuminate WARNING When installing a Model 5844HRT or 5844SHRT Link Repeater an earth Ground must be attached to the Ground Stud on the face of the case before connecting to power Failure to follow this procedure may result in electrical shock to personnel 6 The units are now installed and operating 7 Verify operation using the diagnostic LEDs See Figure 5 NOTE The LEDs only illuminate when there is signal traffic and are not illuminated during signal quiet times The LEDs may flicker This is normal operation 23 LOOP OPERATION PEER TO PEER CONFIGURATION NOTE Before constructing a loop network be sure that the software protocol is capable of managing the receipt of the echo of its own transmission If it cannot then use Point to Point configurat
8. 1 Chassis Ground 2 Transmitted Data Link Input 2 Received Data Link Output e 3 Received Data Link Output 3 Transmitted Data Link Input e 4 Connection 4 No Connection 5 Signal Common 5 Signal Common e 6 5Vdc Output e 6 5 Output e 7 Repeat Enable Disable e 7 Repeat Enable Disable e 8 TTL Output e 8 TTL Output 0 9 9 to 15 Vdc Input 9 to 15 Vdc Input Figure 2 Data Port Pin Assignments 1 5 Models 5843 5844 5843S and 5844S RS232 or TTL 1 2 2 DTE DCE Switch Two Position Switch The DTE DCE Switch on the Link Repeater switches the functions of pins 2 and 3 to accommodate the IED configuration as DTE or DCE This is a 2 position switch and both actuators must be set for the Link Repeater to work properly DTE Data Terminal Equipment By RS 232 standards equipment designed as DTE transmits data out of pin 2 on a 9 Pin D connector and receives data on pin 3 DCE Data Communication Equipment By RS 232 standards equipment designed as DCE transmits data out of pin 3 on a 9 Pin D connector and receives data on pin 2 1 2 3 Data Coupling Switch The Data Coupling switch selects the electrical input conditioning the AC position selects capacitively coupled the DC position is directly coupled AC AC coupling has a minimum incoming data requirement of 1200 baud due to the capacitive coupling This option blocks DC electrical levels should the device c
9. Repeater in order to obtain status as loop Master FOC Fiber Optic Cable Single mode Single mode fibers generally have diameters of 5um to 13um Because of this small core only one axial path for light propagation is available through the fiber The optics required to drive single mode fiber have to be highly focused so that minimum dispersion occurs Though requiring more expensive optic emitters the benefit is that longer transmission distances lt 35 km can be achieved Multi mode Multi mode fibers have core diameters of 50 and larger This larger core allows the light rays to be propagated along several different paths down the fiber The different paths include an axial component as well as reflected components Multi mode units are economical and effective for transmission over distances up to 6 km Repeat Switch The Repeat Switch enables REP or disables OFF the repeater function of the Link Repeater DTE DCE Switch Each Link Repeater is provided with this switch 2 position to easily adapt the device to either the DTE or DCE configuration of the equipment which it connects Data Coupling Switch Each Link Repeater is provided with this switch to easily adapt the device for either DC or AC electrical Input data coupling With AC data coupling the minimum input data rate is 1200 baud with DC data coupling there is no minimum input data rate but a signal stuck on the input will lock up a loop bussed or star network
10. ignored because the cable is tested after the terminations are added If you are using fittings not supplied by DYMEC you can get the optical budget loss information from their manufacturer s Aging As FOC ages tiny cracks will form in the glass core of the fiber These will cause the attenuation of the cable to increase The optical emitters age over time causing a reduction in their optical launch power DYMEC suggests that a buffer be applied to the optical budget to assure proper operation of the unit over a 20 year life A 2 5 dB to 3 dB loss factor is suggested to compensate for system aging over 20 years FOC is 62 5 125 multi mode DYMEC supplied 100 kpsi rated 3 dB km and 3 for aging No other attenuating items in the circuit initial 19 5 dB Optical Budget less 3 dB aging less 0 dB for other circuit attenuation fittings equals 16 5 dB divided by 3 dB km equals 5 5 km maximum distance of FOC between transmitter and receiver NOTE FOC extends communication beyond normal RS 232 or TTL Standards limits The distance allowable between Link Repeaters must be calculated using the factors listed above 3 2 2 Extending the Distance Should the distance between two devices exceed that calculated above it is possible to insert a Model 5843HRT or Model 5844HRT Link Repeater to function as a stand alone repeater not connected to an IED Two Link Repeaters would be necessary one for each fiber path W
11. the Master port of the OS5 OS9 to continue the network in Hub and Spoke topology A Master IED may be connected to the master port of an OS5 or OS9 and then an Optical Bus network may be created from any Slave Port of the Optical Star The Optical Stars maybe cascaded Cascading means optically connecting a Slave Port of one Optical Star to the Master Port of the next Optical Star IED s of different electrical formats i e RS 232 EIA 422 EIA 485 2 wire or EIA 485 4 wire may also be interconnected optically in the Star Configuration Models 5845HRT and Models 5846HRT are optically compatible with the 5843HRT and 5846HRT and are used to serve to serve the EIA 422 and EIA 485 devices NOTE It is not recommended that a loop network be connected to an Optical Stars Slave Port Models 5843 5844 5843S and 5844S RS232 or TTL Master FIGURE 9 Optical Star Configuration OS5 cascaded to an OS5 2 5 Models 5843 5844 5843S and 5844S RS232 or TTL 22 LOOP OPERATION MASTER SLAVE CONFIGURATION NOTE Before constructing a loop network be sure that the software protocol of the Master is capable of managing the receipt of its own echoed transmission If it cannot then use Point to Point configurations only between devices in an optical bus network approach This configuration supports a system that requires more than two IED s to be communicating In a Master Slave loop system one IED acts as a Master at
12. the R optical port of the other Set the Repeat Switch for one of the units to ON and the other to OFF The unit with the Repeat Switch in the OFF position is the Master Using the Master transmit and receive or use the Test Mode Switch in the ON position through the other unit in the repeat mode Observe that the diagnostic LEDs illuminate during communication refer to Figure 5 When a Link Repeater is not connected to an IED and is in the repeat mode Transmit pin 2 or pin 3 depending on the position of the DCE DTE switch and Chassis Ground pin 1 should be connected to Signal Common pin 5 This will prevent any spurious noise from being induced into the fiber optic loop circuit while servicing an IED Models 5843SHRT and 5844SHRT only When not connected to an IED and in the repeat mode the Link Repeater should have Chassis Ground pin 1 connected to Signal Common pin 5 If these pins are not tied together noise could be induced into the fiber loop This is also necessary when servicing an IED in order to keep the fiber loop and the Link Repeater operational WARNING The jumper connecting Chassis Ground and Signal Common should be disconnected before reconnecting Models 5843SHRT or 5844SHRT to an IED 42 TROUBLESHOOTING If the unit does not work properly use the following check list e s the unit properly powered 1 Verify the unit is receiving the correct power 2 Is the Power LED on 2 If required make su
13. 00 Minimum Bend Radius With Load cm 5 5 14 Minimum Bend Radius No Load cm 3 3 7 Crush Resistance N cm 750 750 2200 Impact Resistance Cycles 1000 1000 2500 Flex Resistance Cycles 7500 7500 2000 Operating Temperature C 40 to 85 40 to 85 40 to 85 Storage Temperature C 55 to 85 55 85 55 to 85 METRIC TO ENGLISH UNIT CONVERSIONS MULTIPLY MULTIPLY BY BY Millimeters Inches 0 03937 Kilograms Pounds 2 2046 Centimeters Inches 0 3937 Kg Km Pounds 1 000 Ft 0 67197 Meters 3 2808 Newtons Pounds 0 22481 Kilometers Feet 3280 8 N Cm Pounds inch 0 57101 Kilometers Miles 0 62137 4 1 Models 5843 5844 5843S and 5844S RS 232 or TTL TESTING AND TROUBLESHOOTING TESTING Models 5843HRT and 5844HRT lend themselves to easy installation and testing Testing the units requires transmitting and receiving data or setting the Test Mode switch to ON while observing that the diagnostic LEDs are illuminating in the proper sequence To test whether a unit is transmitting and receiving correctly insert a short fiber jumper between its T and R optical ports transmit a signal or turn the Test Mode Switch ON and note that all four diagnostic LEDs should illuminate during communication refer to Figure 5 To test the units in a loop configuration two Link Repeaters are required Connect short Fiber jumper from the T optical port of one Link Repeater to
14. 2 Loop Operation Master Slave Configuration 2 3 Loop Operation Peer to Peer Configuration Applications 52 eds oO uas 3 1 Data Rate 22 42 ethics a eI WU aoro d tures dodi at eda 3 2 Optical Budget PILES Bx any a p ai h Bh nie 3 2 1 Cable Attenuation Factors 2 2 2 3 2 2 Extending the 3 3 Number of Repeats ks ey kta Get Gly Ay Sete 3 3 1 Effects of Data Rate 3 3 2 Pulse Width Distortion a 3 3 3 Temperature Effect 3 4 Powering the Link Repeater Bea lanit arar aha Taa SAE 3 4 1 Model 5843HRT 5843SHRT 3 4 2 Model 5844HRT 5844SHRT 3 5 Optional Station Power 3 6 Type of Communication ss 3 7 Selection of Fiber Optic Cable Testing and Troubleshooting 4 1 Testing v TR 42 Troubleshooting eb Nouv S Se Specifications o son xod ok god neg uL EUER aegre e d 5 1 Electrical and Optical Specifications 5 2 Mechanical Dimensions of the 5843HRT or 5843SHRT EON ME CEA 5 3 Mechanical Dimensions of the 5844HRT 5844SHRT Ordering Information A LA GLA LA LA LA Ola LA lA 2
15. E JE JEJE TE LJL JEJE JEJE UE L JL JEJE JE JEJE 1E 18 L JL JEJE JE JEJE IE DETAILED COMMENTS Please be specific i e correct expand etc Page No Comments Other suggestions for improving this document Compared to other manufacturers of a similar product how would you rate this document Superior Comparable Inferior Don t Know Comments Comments concerning your specific application Name Title Company Address City State Zip Telephone FAX Please FAX or mail this sheet to the address listed below Attn Document Supervisor y 25 Commerce Way 1 North Andover MA 01845 978 688 8807 FAX 978 688 8771 GarrettCom www garrettcom com Industrial Networking at Its Best 5 4
16. Output power Typical 10 5 dBm peak 10 5 dBm peak Receiver Sensitivity Typical 30 dBm peak 30 dBm peak 62 5 125 Multimode 62 5 125 Multimode Wavelength 850nm 850nm Connector Type ST ST Compatible Fiber Type Multimode 50 200 Multimode 50 200 Configuration Switches DTE DCE DTE DCE AC DC Coupled AC DC Coupled Link Repeat Link Repeat Data Rate Data Transmission Transmission Distance Bit Error Rate Point to Point Latency Repeat Latency Electrical Parameters Inputs Data Format Data Connector Input Impedance Input Voltage Outputs Output Impedance Driver Output Pin 8 Output Ambient Temperature Operating Temperatures Storage Temperature Power Required Power Dissipation BTU H Weight Dimensions Inches Indicators Pin 8 Drive Current Pin 6 5 V DSR or CTS pull up Diagnostic Mode DC to 250K bps Asynchronous simplex or Full Duplex up to 5000 meters 62 5 125 Cable 3dB km 10 E9 Max 4 usec Max 400 nsec Max EIA RS232 CCITT v24 9 pin D Type Female gt 30000hms 30 Volts Max gt 300 Ohms 5 V min into 3000 Ohms 0 to 5V 67 or 207 Ohm Source Impedance 40 to 85 C 40 to 85 3 0 Watts 250 mA 12V 8 2 BTU 9 Ozs 2 0W X 5 1L X 1 3H Power Transmit Fiber Transmit Electrical Receive Fiber Receive Electrical Specifications are subject to change without notice 5 1 Pin 8 Drive Current Pin 6 5 V DSR or CTS pull up Diagnostic Mode DC to 250K bps As
17. REPEATER E RS232 90 250 H 24 48 Vdc L 2 00 4 12 MADE IN U S A SWITCH ACCESS REMOVABLE ACCESS PLATE TYPE ST 9 PIN D CONNECTOR WITH F O CONNECTOR 4 40 STANDOFF HARDWARE 6 0 Ordering Information LINK REPEATERS Part Number EIA Std Fiber Type Input Power Rating RS 232 TTL Multi Mode 12 RS 232 TTL Multi Mode 90 250 90 250 Vac RS 232 TTL Multi Mode 24 48 EIA 422 485 Multi Mode 12 Vde 4 58445 ACCESSORIES Model Description 4310 12 Power adapter for Models 5843HRT and 584 O 94 bi NE DB9 Male Tinned Lead TUFoot Cable Pigtai e LUI S i near ee Ree User Manual for Mo E z 9 pplications 5756A XXXX Terminations the length of the fiber optic cable in Meters note order only in full UIV meters and not a fraction thereo veter 3 281 Fee Q d 25 Commerce Way 1 North Andover MA 01845 978 688 8807 FAX 978 688 8771 GarrettGom WWW garrettcom com Industrial Networking at Its Best READER S COMMENTS We invite your comments and welcome suggestions to make this manual more useful Bulletin Rev Today s Date GENERAL COMMENTS Im Acceptable G Contents Organization Accuracy Clarity Completeness Example lllustrations Referencing Indexing Readability L JE JEJ
18. SHRT The voltage should be regulated and within a range of 9 to 15 Vdc Model 5844HRT has an internal regulated power supply that may be connected directly to ac or dc station power The station power may be 90 to 250 Vac 50 60 Hz or 90 to 250 Vdc The station voltage may be unregulated but the circuit must be capable of providing a minimum of 35mA 50mA for the 5844SHRT continuously Model 5844HRT has a ground stud 6 32 bolt and a power connector on the side of the case If Model 5844HRT is powered through the power connector then connect a suitable earth ground to the grounding stud on the side of the Link Repeater Remove the power plug from the power connector of the Link Repeater Connect the power lines to the power plug being careful not to leave any wire strands exposed This power input to the Model 5844HRT is Surge Withstand Protected to IEC 61000 4 4 EN61000 4 5 Standard and ANSI IEEE C37 90 1 1989 NOTE Model 5844HRT or Model 5844SHRT can be ordered to accommodate 24 Vdc 48 Vdc power WARNING When installing a Model 5844HRT or a 5844SHRT Link Repeater an earth Ground must be attached to the Ground Stud on the side of the case before connecting to power Failure to follow this procedure may result in electrical shock to personnel 1 2 11 Peripheral Equipment 1 2 11 1 IED An IED is any intelligent electrical device such as a computer RTU PLC smart meter relay etc that has the ability
19. TE The LEDs only illuminate when there is signal traffic and are not illuminated during signal quiet times The LEDs may flicker This is normal operation 1 2 10 Power Connections 1 2 10 1 Powering Model 5843HRT Model 5843HRT may be powered either through pin 9 and pin 5 of the 9 Pin D connector or the external connector located on the back of the unit 1 When powering the 5843HRT via pin 9 of its D connector the IED must supply at least 250 mA 340mA for the 5843SHRT The voltage should be regulated and within a range of 9 to 15 Vdc 2 When powering the 5843HRT via its external connector DYMEC offers a 110 Vac to 12 adapter Model 4310S that is designed specifically to plug into this connector Model 4310S assures reliable power over the temperature range of 0 C to 70 C 1 8 Models 5843 5844 5843S and 5844S RS232 or TTL 1 2 10 2 CAUTION Regardless of the power connection used Model 5843HRT requires 250 mA 340 mA for the 5843SHRT within a range of 9 to 15 VDC An inadequate power supply not capable of supplying 250 mA over the entire operating temperature range may cause the Link Repeater to malfunction Powering the Model 5844HRT Model 5844HRT may be powered either through pin 9 and pin 5 of the 9 Pin D connector or the power connector located on the side of the unit 1 When powering Model 5844HRT via pin 9 of its D connector the IED must supply at least 250 mA 340 mA for the 5844
20. all times and addresses or polls each of the other connected IED s individually Each Slave receives the same transmission from the Master IED but only responds when it recognizes its address in the polling message Master FIGURE 8 Master Slave Loop Configuration The Master must have its Repeat Switch in the OFF position When it transmits a request out its T optical port it will receive the echo of its request at its R optical port This request has gone around the loop and has been repeated by each Slave in the loop However the Master does not repeat re transmit any of these received signals optically back around the loop because its Repeat Switch is in the OFF position 2 6 Models 5843 5844 5843S and 5844S RS232 or TTL NOTE The communication logic and control software of the Master IED must be able to manage the receipt of its echoed request The receipt of the echo can be used in conjunction with a watchdog timer to continuously verify loop integrity When addressed the Slave will transmit an appropriate response Each Link Repeater connected to a Slave IED must have its Repeat Switch set in the ON position In this mode all signals received on a Slave s R optical port are delivered to the IED s communication port and at the same time repeated out the T optical port to the next device in the loop If an IED determines that this request requires a response then the Link Repeater transmits the IED s respo
21. aster Slave loop is the number of repeats for that type of loop The number of Peers minus one is the number of repeats in a Peer to Peer loop Asynchronous Communication This type of communication does not transmit a separate clock signal with the data signal Link Repeaters support asynchronous communication A communication scheme where the clock needs to be transmitted Synchronous Communication is not supported unless the data and clock are transmitted together on the same pin Models 5843 5844 5843S and 5844S RS232 or TTL 1 2 MODEL 5843HRT AND MODEL 5844HRT LINK REPEATERS NOTE Link Repeaters contain no serviceable parts Opening the unit will void the warranty Each Link Repeater consists of the following elements shown in Figure 1 Earth Ground 12 Power Input 6 32 Thread SST Diagnostic LED s SWITCH ACCESS DYM EC MODEL 5943 LINK REPEATER RS 232 MADE IN U S A Removeable Type ST 9 Pin D Sub Access Plate Fiber Connector Connector FIGURE 1 Elements of the Link Repeater 1 2 1 9 Pin Data Port D connector The Link Repeater connects directly to an IED s RS 232 or TTL communication port The pin out configuration of the Link Repeater is shown in Figure 2 If the IED s port is not a 9 Pin D connector or if the IED s pin out configuration differs an adapter is required gw MODE des DCE MODE DIE T DTE DTE e 1 Chassis Ground e
22. aster after traveling around the optical loop Optical Bus Configuration More than two Link Repeaters connected together in a manner where the Master s transmission is heard by all IED s and there is no returning echo of this transmission 1 1 Models 5843 5844 5843S and 5844S RS232 or TTL Optical Star Configuration More than two Link Repeaters connected together in a hub and spoke topology where the Master s transmission is heard by all IED s and only the Master hears the polled Slave s response and there is no returning echo of the transmissions Master The Master is the IED that controls the loop in a Master Slave loop This IED is responsible for the control of the loop the polling of the Slaves for information and the prevention of data collisions All loop communication is echoed back to and stops at the Master The Master s Repeat Switch is always in the OFF position Slave A Slave is an IED that is passive in a Master Slave loop A Slave s communication is under the control of the Master and should be controlled to prevent data collision in the loop All communication generated by the Master will be repeated through each Slave and back to the Master A Slave s Repeat Switch is always in the ON position Peer Peers are IED s that have equal status and each may Master the loop when allowed by the software A Peer s Repeat Switch is always in the OFF position and a Peer IED controls pin 8 of its Link
23. e Full Duplex Simultaneous transmit and receive Simplex Half Duplex Full Duplex Point to Point X X X Repeat Switch OFF X Master Save Loop X Master Repeat Switch OFF Master Slave Loop X X Slave Repeat Switch ON Peer to Peer Loop Master Repeat Switch OFF and pin 7 high Peer to Peer Loop Slave Repeat Switch OFF and pin 7 low Models 5843 5844 5843S and 5844S RS 232 or TTL 3 7 SELECTION OF FIBER OPTIC CABLE FOC Fiber optical cable is available in several formats simplex duplex and breakout FOC is also available in various diameters and tensile strengths Tensile strength is important for longer life expectancy Simplex FOC is desirable for loop operations It has one optical conductor and can be connected from the transmitter of one Link Repeater to the receiver of the next Link Repeater in the loop Duplex FOC has two optical conductors and is a convenient form when connecting two units Point to Point Breakout cable is a duplex FOC that has extra strength members added and is suit able for burial The following are the specifications of multi mode FOC offered by DYMEC and is the recommended minimum standard for optimum performance Simplex Duplex Breakout Fiber Count 1 2 2 Fiber Material Glass Glass Glass Attenuation dB km 3 3 3 Diameter mm 3 0 3 0 x 6 5 7 0 Weight kg km 8 0 16 0 50 Tensile load Short Term N 500 1000 1200 Tensile load Long Term N 300 500 5
24. enuation of the fiber optic cable Cable attenuation is expressed as X dB per kilometer Other factors of attenuation include FOC fittings terminations splitters etc FOC diameter and FOC aging Optical budget is the result of the expression Optical Budget dB 10 xlogi0 Receiver sensitivity uw Launch Power uw Each Model 5843HRT or 5844HRT Link Repeater has a typical optical budget of 19 5 dB Each Model 5843SHRT or 5844SHRT Link Repeater has a typical optical budget of 19 dB 3 2 1 Cable Attenuation Factors The following cable factors must be applied as corrections to the optical budget 3 2 1 1 Diameter Multi mode FOC of different diameters will vary the available optical budget of a system due to different FOC core diameters The 19 5 dB typical optical budget is applicable to 62 5um diameter FOC Table 1 shows the correction factors to use on the available optical budget for different diameter cable Table 1 UMS FOC Diameter gt 50um 3 dB 100um 4 dB 200 7 dB 3 1 3 2 1 2 3 2 1 3 EXAMPLE Models 5843 5844 5843S and 5844S RS 232 or TTL Single mode 19 dB of optical budget is typically available and is essentially consistent for fiber diameters Fittings Adding additional splices feed throughs or patches to the FOC will add losses to the available optical budget When using multi mode Fiber Optic Cable terminated and supplied by DYMEC optical connector losses can be
25. gnostic LED that illuminates when the Link Repeater is delivering a received optical signal electrically to the IED RO Diagnostic LED that illuminates when the Link Repeater is receiving a signal optically Optical Budget The optical budget is expressed in dB and is the amount of light loss tolerated for communication The total distance between two devices that a signal can be transmitted is determined by subtracting all the losses of the circuit from the optical budget Various factors in the optical circuit attenuate the light transmission and must be accounted for to assure a reliable optical circuit Key factors include cable attenuation expressed as dB per unit length cable aging and cable fittings terminations splitters etc Non Return to Zero NRZ This type of encoding scheme does not require the voltage potential of each data bit to return to the zero potential No clock or timing recovery is provided with this type of communication except in the start and stop bits usually found on each data word Return to Zero RZ This type of encoding scheme requires the voltage potential of each data bit to return to the zero potential This allows timing recovery with each bit instead of just the start and stop bits of the data word 1 3 Models 5843 5844 5843S and 5844S RS232 or TTL Number of Repeats The Number of Repeats is the number of Link Repeaters that may be connected in a loop configuration The sum of Slaves in a M
26. he LEDs only illuminate when there is signal traffic and are not illuminated during signal quiet times The LEDs may flicker This is normal operation 2 10 Models 5843 5844 5843S and 5844S RS 232 or TTL 3 3 1 3 2 APPLICATIONS When planning a system using Model 5843HRT and Model 5844HRT Link Repeaters the following considerations should be reviewed Data Rate Optical Budget and the distance between connected units Number of units in a loop configuration Powering the Link Repeaters Type of communication including format Selection of Fiber Optic Cable FOC DATA RATE Model 5843HRT and Model 5844HRT Link Repeaters automatically support all data rates from 1200 bits per second AC Coupled Factory Default to 250 Kilobits per second No internal selection nor setting is required However it is necessary that all connected IED s be set at the same data rate OPTICAL BUDGET The optical budget is a ratio of the receiver sensitivity to launched optical power i e amount of light loss available from the transmitter to the receiver It is calculated on a log scale so that a 3 dB loss is equal to half of the original power 10 dB is one tenth of the original power 20 dB is one hundredth etc Many different elements in the optical circuit can induce losses to the power of the signal This attenuation must be taken into account when determining the distance that the signal can be transmitted The major factor is the att
27. hen installed as a repeater only the 9 Pin D connector of either Model 5843HRT or Model 5844HRT should be installed with a terminator that covers the pins and connects the transmit pin 2 or 3 depending on the DTE DCE switch position to the signal common pin 5 and also connects the signal common pin 5 to the chassis ground pin 1 3 2 Models 5843 5844 58435 and 5844S RS 232 or TTL 3 3 NUMBER OF REPEATS In a loop configuration the number of units that can be used as repeaters must be determined A repeater is any unit that uses the repeat function of the Link Repeater All Slaves in a Master Slave loop are considered repeaters Three factors must be considered in calculating the maximum number of repeaters possible in a loop the data rate bits per second the minimum required width of the original pulse echoed back to the Master and the peak operating temperature Number of Repeats in a Loop Configuration 10 100 Data Rates kbps FIGURE 10 Number of Repeats Effects of Data Rate The number of repeaters is an inverse linear function to the data rate more repeats at lower data rates The data rate or bits per second rate determines what the original pulse width of each bit will be The higher the data rate the smaller the pulse width of each bit As the signal passes through a repeater any distorti
28. ions only between devices in an optical bus network approach A Peer to Peer loop configuration is similar to the Master Slave loop configuration except that each IED in the loop is capable of Mastering the loop in a pseudo Master Slave loop To achieve this Models 5843HRT and 5844HRT provide an electrical means of controlling the OFF REP function In this system all Link Repeaters are connected in a loop with their Repeat Switch in the OFF position Each IED must be able to control pin 7 of the D connector to enable and disable the ON function When an IED applies a low potential less than 0 6 Vdc to pin 7 it enables the repeat function of the Link Repeaters This is equivalent to the Repeat Switch being in the ON position When an IED wishes to become the loop Master it raises the potential on pin 7 to a high potential greater than 2 0 Vdc This disables the Link Repeaters repeat function as if the Repeat Switch were in the OFF position 2 8 Models 5843 5844 5843S and 5844S RS232 or TTL NOTE The communication logic and control software of the Master IED must be able to manage the receipt of its echoed request The receipt of the echo can be used in conjunction with a watchdog timer to continuously verify loop integrity FIGURE 9 Peer to Peer Loop Configuration When the potential on pin 7 is low signals received on the R optical port are delivered to the IED and are repeated out the T optical port to the
29. ll When different a specific reference is made identifying the particular model s and their variation The User should read this manual to fully understand how to use the many features of the Link Repeaters in an effective communication system DEFINITIONS The following terms are used in this manual IED An IED is any intelligent electrical device capable of RS 232 and or TTL data communications such as a computer RTU PLC smart meter relay etc The IED must have resident software or firmware that manages the data communication logic including protocol formatting and timing addressing capability if required control logic software handshaking and scheduling Point to Point Configuration Two Link Repeaters connected directly to each other Master Slave Loop Configuration More than two Link Repeaters connected together where the FOC connects the T optical port of one device to the R optical port of the next unit in the loop One IED is designated as the Master and controls all the communication and the other IED s act as Slaves and respond only when specifically polled by the Master Peer to Peer Loop Configuration More than two Link Repeaters connected together where the FOC connects the T optical port of one device to the R optical port of the next unit in the loop Each IED has the capability of becoming loop Master as allowed by the controlling software Echo The return of the Master s transmission back to the M
30. mum number of repeats should be de rated by 20 At higher temperatures the distortion caused by each repeat increases causing the maximum number of possible repeaters to go down EXAMPLE Peak temperature of the system will be 70 C Running at 9600 bps 60 of original pulse width possible initial 100 repeats from Figure 10 less 20 de rate for 70 C times 1 33 for 60 pulse width equals 100 x 0 8 x 1 33 106 repeats 3 4 POWERING THE LINK REPEATER 3 4 1 3 4 2 Model 5843HRT Model 5843HRT may be powered through pin 9 on the D connector or by means of the 3 5 mm female connector located between its two optical ports The unit has an input voltage range of 9 to 15 and requires a maximum of 250 mA 340mA for the 5843SHRT over the entire operating temperature range DYMEC s Model 4310S ac to dc power adapter is designed specifically for this purpose It connects directly into a normal 110 volt power receptacle and has an operating temperature range of 0 C to 70 C Model 5844HRT Model 5844HRT is designed with an internal universal regulated power supply for envi ronments where unregulated ac or dc voltages are available It accepts ac voltages in a range of 90 to 250 volts 50 or 60 hertz or dc voltages in a range of 90 to 250 volts These power sources must be capable of supplying 35 mA 50mA for the 5844SHRT over the entire operating range It is also possible to power the Model 5844HRT through 9 on the
31. ndard handshaking pin in the ON position and disconnects the pins it in the OFF position ON Pin 6 Data Set Ready of the Link Repeater output 5 Vdc This signal is used by devices requiring handshaking signals to indicate the readiness of the connected devices to receive data OFF Pin 6 of the Link Repeater is not connected 1 6 Models 5843 5844 5843S and 5844S RS232 or TTL 1 2 6 Pin 8 Current Output Option Switch 5B Models 5843 and 5844 Links are provided with this switch to allow users select one of 2 output source drive current values for the TTL output pin pin 8 Selections are 10ma 207 Ohm or 20ma 67 Ohm Consideration should be given that the current value selected is appropriate for the input of the device being connected to this data channel 1 27 Test Mode Option Switch Models 5843 and 5844 Links are provided with this switch to allow users who wish to test the fiber connections of the link with a built in diagnostic mode This mode sends a 100Hz signal out the transmit port as well as looping back the copper port pins 2 and 3 for diagnostic purposes High Low Hanshaking DSR OFF Test Mode ON OFF Data Coupling DC AC Repeat Mode ON OFF DCE DTE FIGURE 4 Switch Settings 1 2 8 Optical Ports There are two optical ports T and R The T optical port transmits data signals optically to the next Link Repeater The R port receives the optical data signal from another Link Repeater s T optical p
32. next device in the loop A high potential on pin 7 causes signals received on the R optical port to be delivered to the IED only and are not repeated out the T port It is not necessary for a Slave to raise the potential of its pin 7 to transmit After an IED has completed its tasks mastering the loop it must return its pin 7 to a low potential enabling its repeater function re establishing loop continuity for the next IED that becomes loop Master NOTE Powering and Controlling pin 7 is ignored in all configurations except Peer to Peer loop operation Half duplex communication is available with this configuration When an IED is in the Slave state it should not attempt to initiate a transmission while it is receiving a signal Since signals being received are also being repeated at the same time any attempt to transmit its response while still receiving can corrupt both transmissions due to a data collision NOTE Any Link Repeater that has its Repeat Switch in the OFF position and has a high potential on pin 7 will not repeat signals received on its R optical port out of its T port Only transmissions initiated by its IED are transmitted out its T optical port 2 9 Models 5843 5844 5843S and 5844S RS232 or TTL APPLICATION NOTE In Peer to Peer loop operation the communication logic control software and the Master IED must manage 1 The transmission to Slaves 2 The receipt of the echo of its transmissions 3 The receip
33. nse out the T optical port The response is repeated at each Slave device until it arrives at the Master When an IED is a Slave it should not attempt to initiate a transmission while it is receiving a signal Since signals being received are also being repeated at the same time any attempts to transmit its response while still receiving can corrupt both transmissions due to a data collision 3 CAUTION If a Slave IED attempts to transmit while receiving a message a data collision will occur In Master Slave Loop Operation half duplex communication sequential transmit and receive functions is available Only the Master can communicate full duplex simultaneous transmit and receive in a Master Slave loop APPLICATION NOTE In a Master Slave Loop Operation the communication logic control software and the Master IED must manage 1 The transmission to Slaves including addressing 2 The receipt of the echo of its transmissions 3 The receipt of the Slave s response to its transmission 4 The control of the Slaves to prevent the initiation of a transmission while receiving a signal 2 2 1 Installation 1 Setthe DTE DCE Switch to the appropriate position for each Link Repeater and its respective IED 2 Set the Repeat Switch to the OFF position on the Master Set the Repeat Switch to the ON position on each Slave 3 Connect the Link Repeater to the IED s RS 232 or TTL communication port Including any adapter
34. on effect on the data signal is greater at higher data rates due to smaller pulse widths then lower data rates Pulse Width Distortion As the data signal is passed from repeater to repeater there is a small change to the pulse width defined as pulse width distortion The amount of change that is tolerable corresponds to the percentage of original pulse width required by a particular communication system design Typically a communication system requires the data word or bit stream that each Slave IED receives match the signal originally generated by the Master within some tolerance of pulse width distortion High tolerance systems allow more pulse width distortion therefore more repeats are tolerated Conversely low tolerance systems allow fewer repeats in the loop 3 3 3 3 3 Models 5843 5844 5843S and 5844S RS 232 or TTL Figure 10 shows the maximum number of repeats possible if 70 of the original pulse width is required by any IED in the loop The acceptable percentage of the original pulse width is due to the requirements of the IED s If more of the original pulse width is necessary or less is allowable then the number found in Figure 10 can be modified Table 2 shows the factors to be used to correct the number of repeats found in Figure 10 for such cases Table 2 pres of Original Pulse Multiply Factor 80 67 60 1 33 50 1 67 Temperature At peak operating temperature above 65 C the maxi
35. onnected fail and stick in a high level There is a 35 mS timeout for stuck output pins after this time out the link returns to LED off state DC DC coupling allows DC logic levels to be transmitted over the fiber network care must be taken to guarantee that when any device stops transmitting packets that the input level returns to a state that allows the T receptacle emitter to turn off If it does not and the IED is part of a loop bussed or star network the first device to transmit blocks all other devices on the network from transmitting Single Mode units cannot be DC coupled 1 2 4 Repeat Switch The Repeat Switch enables the repeater function in the ON position and disables it in the OFF position ON The repeater function available in the Link Repeater is enabled This function converts the optical signal received on the R optical port to an electrical signal and delivers this signal to the appropriate pin of the 9 Pin connector as well as re transmits the signal optically out the Link Repeater s T optical port OFF The repeater function available in the Link Repeater is disabled The Link Repeater converts the optical signal received on the R optical port to an electrical signal and delivers this signal to the appropriate pin of the 9 Pin connector and does not re transmit the signal optically out the Link Repeater s T optical port 1 2 5 Handshaking Switch 4B The Handshaking Switch outputs 5 Vdc on a sta
36. ort Each port is fitted with an ST type receptacle for attaching the FOC R T 9 Pin D Sub Fiber Connector Fiber Connector Connector Pin 1 Figure 3 Optical Ports and Electrical Port 1 7 Models 5843 5844 5843S 5844S RS232 or TTL 1 2 9 Diagnostic LEDs Each Link Repeater is equipped with four diagnostic LEDs They represent the electrical transmit TE optical transmit TO electrical delivery RE and optical receive RO paths These LEDs when illuminated show that the appropriate path is active When the Link Repeater is transmitting both TE and TO LEDs will illuminate to show the transmit path active When the Link Repeater is receiving light signals both RO and RE LEDs will illuminate If the unit is in the repeat mode and receiving light the RO RE and TO LEDs will illuminate because the signal is being re transmitted out the optical port as well as being delivered to the D connector LEDs only illuminate when the path is active powering of the unit does not illuminate the LEDs unless their path is active When data is present on the paths the LEDs may flicker this is normal The diagnostic LEDs may be used for trouble shooting by observing that the illumination of the LEDs corresponds with activity in the unit See Figure 5 for LED patterns and signal paths Normal Transmission Normal Receive Normal Repeat FIGURE 5 Diagnostic LED patterns and signal paths NO
37. re power from D connector is on Pin 9 e Check that the diagnostic LEDs are responding to the optical and electrical activity 15 the unit mated properly to the IED If an adapter is used check that pin assignments are connected correctly 1 Are the fiber cables connected properly T to R not R to nor T to T 2 15 the DTE DCE switch and the Repeat switch set to the proper positions for the application 4 1 Models 5843 5844 5843S 5844S RS 232 or TTL Determine that the IED s originating signal is within standards NOTE If the Link Repeater is not connected directly to an IED determine that the electrical signal received by the Link Repeater is not corrupt The Link Repeater only repeats the signal it is given it does not re clock or re generate the signal Review the IED s software and protocols Does the IED have physical handshaking requirements and have the appropriate settings on the IED been made to compensate for these requirements e Consult factory NOTE The LEDs only illuminate when there is signal traffic and are not illuminated during signal quiet times The LEDs may flicker This is normal operation NOTE Link Repeaters contain no serviceable parts Opening the unit will void the warranty 4 2 SPECIFICATIONS 5 1 Electrical and Optical Specifications All Specifications over entire Operating Temperature Range Multimode 5843HRT 5844HRT Optical Budget Typical 19 5 dB 19 5 dB
38. re that the presence of the TTL signal on pin 8 will not adversely affect the IED operation It is also possible to optically connect Link Repeaters together which are connected to IED s with different electrical formats It is possible to optically interconnect Models 5845HRT and 5846HRT operating EIA 422 485 to DYMEC Models 5843HRT and 5844HRT which are connected to IED s operating RS 232 or TTL formats APPLICATION NOTE DYMEC Models 5843HRT 5844HRT 5845HRT and 5846HRT can optically communicate to each other eliminating the need for format translation interfaces provided all connected devices are operating at the same data rate 2 1 POINT TO POINT CONFIGURATION For Point to Point operation two Link Repeaters are optically connected to each other This configuration permits full duplex communication simultaneous transmitting and receiving half duplex communication sequential transmitting and receiving and simplex transmitting or receiving only 2 1 Models 5843 5844 5843S and 5844S RS232 or TTL APPLICATION NOTE In Point to Point operation the communication logic control software of the IED s must manage 1 The transmission of data signals 2 The receipt of data signals 3 handshaking required must be accomplished through software FIGURE 6 Point to Point Configuration 2 1 1 Installation 1 Set the DTE DCE Switch to the appropriate position for each Link Repeater and i
39. t can handle the return of the transmitted echo that occurs in loop networks Figure 7 shows the connection scheme for an RS 232 optical bus Note that all Slaves hear the Master s transmission but only the Master hears the response from the addressed Slave The Master must always be the first IED in the network RS 232 Master Slave Last Slave FIGURE 7 RS 232 Bus Configuration 2 3 Models 5843 5844 5843S and 5844S RS232 or TTL APPLICATION NOTE Another variation of the point to point concept is the Optical Star network This topology may be created using the Dymec Optical Star OS5 or OS9 This topology creates a Hub and Spoke configuration which can be useful in solving a network configuration based upon the physical positioning of the nodes The Dymec Optical Stars can also be used to create a multi drop Master Slave Optical Star network The Model 5843HRT and 5844HRT are optically compatible with the OS5 and OS9 Master and Slave ports Figure 9 shows a typical connection of an Optical Star network The master IED must always be connected to the Master port of the Optical Star The slave IED s must always be connected to the Slave ports of the Optical Star Variations of this configuration are as follows The optical star may be the last node of an optical bus configuration One may create an Optical Bus configuration starting with the Master IED to a series of Slave IED s and then connect the fiber network to
40. t of the Slave s response to its transmission 4 Thecontrol of pin 7 of D connector 5 The control of the Slaves to prevent the initiation of a transmission while receiving a signal 2 3 1 Installation 1 2 3 6 T Set the DTE DCE Switch to the appropriate position for each Link Repeater and its respective IED Set the Repeat Switch on all the units to the OFF position Connect the Link Repeater to the IED s RS 232 or TTL communication port Including any adapter that may be needed Connect the Fiber Optic Cables T of one device to R of the second device Continue around the loop to complete the loop Connect power to the Link Repeater as follows A Ifthe unit is to be powered through the D connector 9 to 15 VDC on pin 9 referenced to pin 5 then the unit is energized when it is connected to the D connector the power LED will illuminate B If the unit is to be powered through power connector or power connector Connect the power leads and the power connector and then energize the power source The unit is now powered the power LED will illuminate WARNING When installing a Model 5844HRT or 5844SHRT Link Repeater an earth Ground must be attached to the Ground Stud on the side of the case before connecting to power Failure to follow this procedure may result in electrical shock to personnel The units are now installed and operating Verify operation using the diagnostic LEDs See Figure 5 NOTE T
41. to communicate data via RS 232 or TTL format The IED should have a communication port for the connection of the Link Repeater If the IED s communication port connector does not accept the Link Repeater to be plugged in directly an adapter must be made to accommodate the connection Care should be taken to assure 1 9 Models 5843 5844 5843S and 5844S RS232 or TTL that the correct signals are connected to each other See Figure 2 for the Link Repeater s pin signal assignments Check your IED s equipment manual for its signal assignments The IED must also have intelligent software to execute the data communication This intelligence needs to logically manage the data and signal traffic including any addressing token passing handshaking data formatting and scheduling 1 2 11 2 Fiber Optic Cable FOC The selection of the fiber optic cable is important High quality cable can assure the maximum performance of your Link Repeater Important factors to consider are the manufacturer s specification on attenuation per unit length attenuation due to aging diameter and tensile strength Choosing the best quality FOC for your installation is important NOTE DYMEC can supply multi mode glass FOC in either Simplex Duplex or Breakout construction cut to length terminated polished and tested The specification for all DYMEC supplied cables are as follows Fiber Diameter 62 5 125um Tensile Strength 100 kpsi Loss 3 dB per kilometer
42. ts respective IED 2 Setthe Repeat Switch on all of the units to the OFF position 3 Connect the Link Repeater to the IED s RS 232 or TTL communication port including any adapter that may be needed 4 Connect the Fiber Optic Cables T of one device to R of the second device 5 Connect power to the Link Repeater as follows lf the unitis to be powered through the D connector 9 to 15 VDC on pin 9 referenced to pin 5 then the unit is energized when it is connected to the D connector the power LED will illuminate B Connect power leads to the power connector and then energize the power source The unit is now powered the power LED will illuminate 2 2 Models 5843 5844 5843S and 5844S RS232 or TTL WARNING When installing a Model 5844HRT or 5844SHRT Link Repeater an earth Ground must be attached to the Ground Stud on the side of the case before connecting to power Failure to follow this procedure may result in electrical shock to personnel 6 The units are now installed and operating 7 Verify operation using the diagnostic LEDs See Figure 5 NOTE The LEDs only illuminate when there is signal traffic and are not illuminated during signal quiet times The LEDs may flicker This is normal operation APPLICATION NOTE The Point to Point concept can be used to create an optical bus network This can be useful for those situations where the software in the Master has not been written in such a way that i
43. xpressed implied or statutory with respect to and assumes no responsibility for the accuracy completeness sufficiency or usefulness of the information contained herein No warranties of merchantability or fitness for purpose shall apply Permission is granted to make a reasonable number of copies of this document for the use within the organization that has purchased the equipment Link Repeater is used exclusively to describe DYMEC s unique family of Fiber Optic Data Links 1 6 Table of Contents Introduction zc sme ded RE HES 1 1 Definitions 4 22x hee ee 1 2 Model 5843HRT and 5844 Link Repeaters 1 2 1 9 Pin Data PortD Connector 1 2 2 DTE DGE SWIICh RR RA MA A 4s EG 1 2 3 Repeat Switch ates e S a can 1 2 4 Input Coupling Switch L7 do e la ias Bes 1 2 5 Handshaking Switch 1 2 6 Drive Current Pin 8 1 2 7 Test Mode Switch 1 2 8 Optical Ports 1 2 9 Diagnostic LEDs Be hh tit hal 1 2 10Power Connections 1 2 11Peripheral Equipment Configurations Operation and Installation 2 1 Point to Point Configuration o feet 2
44. ynchronous simplex or Full Duplex up to 5000 meters 62 5 125 Cable 3dB km 10 E9 Max 4 usec Max 400 nsec Max EIA RS232 CCITT v24 9 pin D Type Female gt 30000hms 30 Volts Max gt 300 Ohms 5 V min into 3000 Ohms 0 to 5V 67 or 207 Ohm Source Impedance 40 to 85 C 40 to 85 C 4 0 Watts 35 mA 90 250 V H 250 mA 24 48 V L 10 9 BTU 17 Ozs 4 1W X 5 1L X 1 3H Power Transmit Fiber Transmit Electrical Receive Fiber Receive Electrical Single mode Optical Budget Typical Output power Typical Receiver Sensitivity Typical Wavelength Connector Type Compatible Fiber Type Configuration Switches Data Rate Data Transmission Transmission Distance Bit Error Rate Point to Point Latency Repeat Latency Electrical Parameters Inputs Data Format Data Connector Input Impedance Input Voltage Outputs Output Impedance Driver Output Pin 8 Output Ambient Temperature Operating Temperatures Storage Temperature Power Required Power Dissipation BTU H Weight Dimensions Inches Indicators 5843SHRT 19 dB 14 5 dBm peak 33 5 dBm peak 9 125 Single Mode 1300nm ST Single Mode 9 13 DTE DCE AC DC Coupled Link Repeat Pin 8 Drive Current Pin 6 5 V DSR or CTS pull up Diagnostic Mode DC to 250K bps Asynchronous simplex or Full Duplex up to 30K meters 9 125 Cable 0 3dB km 10 E9 Max 4 usec Max 400 nsec Max EIA RS232 CCITT v24 9 pin D Type Female gt 30000hms
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