FDM3SA USER`S MANUAL - GDI Communications LLC
Contents
1. eo EU e UP Sev OUT a 5 PANEL DISPLAYS xn nM RERUM REESE MU 5 8 9 10 YIN RING EE 11 E EEE 12 DCDRUNCHONSNISPEY 16 FIBER IDENTIFICATION TECHNIQUES 2 18 FACTOR Y DEFAULT SETTING S oaia __ _ _____ 19 DATA PORT 19 20 35 MAINTENANCE 36 PREVENTATIVE NTAINTENUSNG E ute 36 M AT EN 36 TROU2. 8 PRELIMINAY FDM3SA Users Guide 01531 Rev Assembly Drawings and a pictorial diagram ul LIE C R4 1 5 5 10 7 2 gl T T n e 5 e x L 3 gt 22 5 15 N N 0 OO 22 a Y Fadl 28 BORO a g x x afna 09 Fa 13538 waon d x Of ei Se e PROD TEST tr C14 6 C19 C20 C21 a INSTALL 50 aE Ll Lu e T i T e Lat 0 gt l T Di c LL PRELIMINAY 090 N Q Udi 3 1 1 O if in LJ i ela E E E g Me 01525 GDI COMMUNICATIONS 2010 MODEL FDM3 SA 41 FDM3SA Users Guide 01531 Rev 42 Appendix A CARE AND HANDLING PROCEDURES FOROPTICAL CONNECTORS Cleanliness Is Very Important When Handling Fiber Optics Particles of dust and oil or grease from fingers can contaminate the end surfaces of an optical connector and reduce the coupling efficiency to the point of causing data errors or the system to fail To put things into perspective the average diameter of the human hair is approximately 98um while the diameter of the end face of an optical connector is 2 5mm Fiber _ Glass Fiber In the center of t
3. 5 5 CTS 0ms CTS 0ms Anti Stream 2Seconds _ ______ __ Aux Port Normal Aux Port Normal PRELIMINARY FDM3SA Users Guide 01531 Rev A Single Ring Display LOS 1 In the Single Ring mode all the displays will be static until T1 there is a break in the ring when this condition occurs all displays will flash the modem that has lost it s input will flash a Loss Of Signal alarm LOS Slave 1 The following displays indicate a progressive build out of a Single Ring LOS 4 Master LOS 4 1054 R1 T1 R1 T1 Master Slave 1 LOS 1 LOS 1054 Master Slave 1 Slave 2 Master Slave 1 Slave 2 PRELIMINARY FDM3SA Users Guide 01531 Rev Point to Point Operation Point to Point with No Redundant Fiber Path Fiber Path hb Controller In this situation we only have two fibers available so we create a single ring all operations and indications will be the same as the previous single ring setup Modem Switch Settings for 9600 8N1 The Dip Switch settings listed below show what would be required to set the modems to operate at 9600baud 8 1 this is a typical setting for the traffic industry all other switch positions not shown are in the Off position or other selection Master Modem Slave Modem Master 1Ring A X 1Rig 2522 RS23 9600 9600 None Noe RTS CTS RTS CTS CTS 0ms
4. GDI Communications LLC Transportation Communications Specialists FDM3SA USER S MANUAL 01531 Rev This Manual covers all configurations of the FDM3SA Modem with the Serial Number 700000 and up PRELIMINARY FDM3SA User s Manual A01531 Rev Proprietary Data This document contains confidential proprietary data with all rights and titles reserved by GDI Communications LLC By accepting this document the recipient assumes custody hereof and agrees not to dislcose this data or any portion of this data to any unauthorized person without the prior written consent of GDI Communications LLC Recipient further agrees not to incorporate these drawings specifications or technical information in whole or in part in any other product or endeavor THIS LEGEND SHALL BE INCLUDED ON ANY REPRODUCTION OF THIS DOCUMENT GDI COMMUNICATIONS LLC 280 80 West Exit 1 PO BOX 1330 Verdi Nevada 89439 Phone 775 345 8000 FAX 775 345 8010 WWW Sgdi com PRELIMINARY PRELIMINARY TABLE of CONTENTS GLOSSARY ALS Pree UM ee Eee I re ST ME M D OT EO EU 1 GENERAL DESC RIP TION wriccciesticsccesccedeleceeecsucccccesuceucecsectendeseiesdseskocasuseucesseahendeseeescesseececdesusuasonwassccucedeldoestes 2 GENERAL CHARACTERISTICS ccccccccccccscccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccceccecces 4
5. RX DATA Pulsing indicates the battery has reached full charge B anti str state and is being maintained Pulse duty cycle varies Dp with the state of charge CHARGING 25 ANTI STR C RESET PRELIMINARY FDM3SA Users Guide 01531 Rev A Rear Panel The rear panel is where the Data and Power connections are made It is also where the battery enable and DCD functionality switches are ea ao a gt KOD FDM3SA Power Connections The modem is powered from an external 12Vvdc power source via the three pin terminal block connector Data Ports The modem has two 5232 Data Ports Main and Auxiliary The main Data Port RJ45 connector connects to the local controller while the Auxiliary RJ45 connector can be used to connect another DTE device such as a controller Alternately the Aux Data Port can be switched to operate as DTE interface to another DCE device like a FSK or wireless modem DCD is available on both ports and can be configured to operate in several different modes In Constant mode the OFF ON switch is used to select the fixed polarity of the DCD signal OFF logical low and On logical High In Dynamic DCD mode DCD is switched according to the presence or absence of DCD KOD must be enabled for this to work PRELIMINARY FDM3SA Users Guide 01531 Rev Bottom Panel This is where the modem is configured for Fiber Topology Data Rates Hand Sha
6. FDM3SA Users Guide 01531 Rev Switchable Options MASTER SLAVE Master Slave modem at the Head End that connects into the fiber system defines that it will be set as a Master all other modems shall beset as slaves Pos Auxiliary Master Selection This switch selection is used for Alternate TMC Disaster Recovery scenarios Typically a city works yard would have an Emergency it is here that the local modem would ecce be set as an Auxiliary Master Should a failure occur at the Primary Master location the Auxiliary Master will ER automatically take over the operation of the fiber system then automatically hand back control when the Primary E TMC is back on line AUX MASTER Lm OFF Topology Selections Please note that you can have any combination of the following topologies just mix or match 7 ES Dual Ring Self Healing Dual Counter Rotating Rings US This selection provides the best fault tolerant protection PRELIMINARY FDM3SA Users Guide 01531 Rev Single Ring This selection is used when there is only one spare fiber left to form a Single Ring Daisy Chain This selection is for the classic Daisy Chain leave the previous switch set to 2 Rings Data Protocol RS232 485 Select RS232 when connecting to traffic controller or other devices utilizing a RS232 port RS485 is used to d
7. Ring Daisy Chain 5232 RS2322 5532 5952 9600 9600 9600 9600 None None Anti Stream AntiStream Anti Stream ____ 2Seconds 7 C Mast 4 2 Seconds 1 2Seconds Aux Port Normal PRELIMINARY FDM3SA Users Guide 01531 Rev A KOD Applications 2 Wire Fiber to 2 Wire FSK Application To TMC or Street Master 11 lt R1 T1 1 FDM Series Fiber Trunk i Series T2 R2 Slave Dual Counter Slave Main Port Rotating Rings 2 RS232 Set the internal DCD KOD Jumper in the FDM2SA to On 2 Wire Fiber to 4 Wire FSK Application To TMC or Street Master Fiber Trunk R Slave Dual Counter Slave Main Port Rotating Rings Options See Page 19 RS232 1 Set the internal KOD Jumper to DCD ON 5VD Continuous Transmit 2 Set the internal KOD Jumper to KOD ON KOD Controls Transmission 4 Wire PRELIMINARY FDM3SA Users Guide 01531 Rev A Fiber to Copper to Fiber Copper Bridge Copper Bridge x 3 lt RS232 Controler To TMC lt or Street IN OUT IN OUT 4 4 Master Modem Modem Aux Port FDM 4 FDM Series 1 FDM Fiber Series Series Slave Main Port Main Port 2 Set the internal DCD KOD 5232 Set the internal DCD KOD Master Jumper in the FDM2S
8. Note the LOS alarms on the modems adjacent to the cut This indicates that the break is between the two modems Also note the fold back symbol indicates the modem has communications to its adjacent modems but not across the break The down stream isolated modems are in communications with each other and will automatically come back on line when the break is repaired PRELIMINARY FDM3SA Users Guide 01531 Rev A Dual Daisy Chains Center Master TMC Compute T1 R1 Middle End Slave Slave s R2 T2 End Slave RTU Controller RTU Controller RTU Controller The Center Master Modem can be located anywhere in the Daisy Chain In some scenario s the TMC may not be at the beginning but somewhere in the middle of the arterial daisy chain The above layout shows how to connect modems to both sides of the master Normal Fiber Indication No Flashing Displays End Slave FEM Middle Slave s End Slave Master LOS 4 LOS 5 LOS 5 LOS 5 OLEC L LLL LLL niu T2 R2 T2 R2 T2 R2 T2 R2 L Los L Los L Los L Los Note at the Master Modem you need to switch it to Center Master by selecting C Mast 64 as well as Daisy Chain Anti Streaming is not used at a Master location End Slave Master Modem Middle Slaves End Slave Modem Slaave _____ Slve Slave 2Ring X 2Ring _____ 2Rig _____ 2Rig Daisy Chain Daisy Chain
9. Los c LOSS of R1 causes LOSS of R2 causes 5 R2 T2 Foldback R1 T2 Foldback 1055 LOS 4 ee dc cernes hex indo T2 R2 T2 R2 0 77775707 T2 Los L LOS o gt Flashing Display indicates LOS by default on first LOS by default on last Transport Layer fault on the 4 modem modem Fiber System R1 R1 T1 All Modems Flash b T2 2 R2 O Los 7 First Modem set Last Modem set to Daisy Chain to Daisy Chain LOS 4 Fiber Status Display for Single Rings Master LOS 4 LOS 4 Loss of signal on R1 m S Master Slave 1 Displays will Flash 1055 LOS LOS i Master Slave 1 Slave 2 Displays will Flash Los4 Loss Loss R1 R1 Master Slave 1 Slave 2 PRELIMINARY FDM3SA Users Guide 01531 Rev A Optical Ports The craft friendly layout of the optical ports matches the front panel fiber display which makes for ease of installation The optical ports are dual hybrid adapters that are interchangeable and can be configured with different types of connectors such as ST FC and SC as required These hybrid adapters are coupled to the main optical transceivers through replaceable mini patch cords that isolate and protect the main optics from damage due to external dirty or damaged patch cords Battery Charging LED On Solid indicates the battery is being charged atthe Dy GD maximum rate
10. A to Jumper in the FDM2SA to DCD ON 5VDC KOD Copper to Fiber to Copper Fiber Bridge lt To Fiber Bridge or Street 7 Master 2 or 4 wire _ FDM Series Main Port Main Port hei DCD KOD Set the internal DCD KOD Master ve 5220 a E DCD for 4 Wire for 2 Wire Note You can 4 Wire on one side of the Fiber Bridge and 2 Wire on the other All Bridge FDM s connecting to 2 Wire circuits must have The Bridge FDM Master must have KOD for 2 and 4 Wire circuits The Bridge FDM Slave can be set to DCD ON 5VDC for 4 Wire circuits PRELIMINARY FDM3SA Users Guide 01531 Rev Adjustments The FDM3SA does not require adjusting PRELIMINARY FDM3SA Users Guide 01531 Rev MAINTENANCE Preventative Maintenance There is no preventative maintenance required or anything that needs to be adjusted for the life of the product Trouble analysis The model 2070 9xx is a fairly complex Modem with hundreds of parts This makes this Modem hard to trouble shoot for the average technician with limited experience It also requires special soldering tools to work with the surface mount parts On the other hand this modem is constructed with top quality parts and so you will not experience many failures The chart on the next page will help find the problem if you
11. BLESHOOTING GC FAR Ty A O 36 37 VOETACE MEASUREMENTS sand Cea ence 39 Tan ea none ea 39 ELECTRICAL INTERCONNECTION DETAILS amp 56 40 ASSEMBLY DRAWINGS AND A PICTORIAL DIAGRAM ui ccccccccccccccccccccccccccccccccccsscecccccccees 41 APPENDI a a ee Le 42 PRELIMINARY 1 FDM3SA Users Guide 01531 Rev GLOSSARY Anti Streaming A function on GDI modems that prevents a Host from transmitting continuously DCD Data Carrier Detect An EIA RS 232D control signal that can be used to gate RXD to a DTE DCE Data Communications Equipment A device that converts data from a DTE to a transport stream For example The GDI model 400 modem is DCE that converts RS232 data from a controller to a FSK Telco system DTE Data Terminal Equipment A device that initiates communication over RS232 lines CTS Clear To Send An EIA RS 232D control signal that can be used to gate TXD data from a DTE Full duplex A communication system where data can be transmitted in both directions at the same time Half dupl
12. CTS 0ms A Anti Stream 2Seconds 71 Aux Port Normal Aux Port Normal PRELIMINARY FDM3SA Users Guide 01531 Rev A Point to Point with Redundant Fiber Path L A Controller Fiber Status LOS Z7 2 R2 T2 R2 L Los L Los Normal Normal The above shows a single Point to Point System with fail safe redundant fiber optics if the primary path fails then the system will automatically run on the secondary redundant path The best system security is obtained by running two separate cables following different paths one cable has T1 R2 fibers and the other has R1 T2 if one cable is completely severed the system will automatically recover via the other cable Modem Switch Settings for 9600 8N1 The Switch settings listed below show what would be required to set the modems to operate at 9600baud 8 1 this is a typical setting for the traffic industry all other switch positions not shown are in the Off position or other selection Slave Master Modem Slave Modem RS2322 522 ______ 9600 9600 None Nome 5 5 5 5 CTS 0ms CTS 0ms A A Anti Stream 2Seconds DO Aux Port Normal Aux Port Normal Status Display Fiber Status Fiber Status 105 105 gt gt 2 R2 2 R2 L Los L Los Normal Normal PRELIMINARY FDM3SA Users Guide 01531 Rev A failure of any receive fiber would cause the following fold back indicatio
13. RESET Should RTS be unasserted the anti streaming timer will reset but the anti streaming LED will remain on indicating that there was an anti Streaming fault If the front panel anti streaming RESET switch is pushed the anti streaming timer will reset and the alarm LED will turn off Auxiliary Port DCE DTE Options This selection is normally left in the DCE mode but if required the Auxiliary port can be driven from the Main port and appear as a DTE see diagram below PRELIMINARY o all 1 FDM3SA Users Guide 01531 Rev A DCD Functionality Located on the rear panel the DCD functionality switch sets the mode of the DCD signal on both the Main and Aux ports The FDM3SA has a built in Key On Data KOD function that asserts a control signal whenever data is being received on either fiber receiver KOD EN Activates the internal KOD function Dynamic Constant DCD Dynamic DCD routes the KOD signal to both the Main an AUX DCD pins CONST sets the DCD pin of both the Main and Aux ports a constant state controlled by the DCD ON OFF switch ON 12v OFF 12v PRELIMINARY FDM3SA Users Guide 01531 Rev A Data Port Flow Diagrams Aux Port configured as DCE DYN DCD ON KOD EN ON In this configuration the Main port can be connected to controller and the Aux port can DCD RXD RTE A AB Fiber Ontic CTS be connected to
14. age the connectors locking mechanism Do not force the connector it should be a snug fit PRELIMINAY FDM3SA Users Guide 01531 Rev GDI COMMUNICATIONS L L C 46 TRAFFIC EQUIPMENT MANUFACTURER e SPECIALIZING IN COMMUNICATIONS 280 80 WEST EXIT 1 P O BOX 1330 VERDI NEVADA 89439 TELEPHONE 775 345 8000 FAX 775 345 8010 PRELIMINAY
15. as the placement of the fiber optic cable laid out in an open ended string and not forming a closed loop or Cable Ring The weakness here is that when there is a complete cable cut between any modem down stream modems become isolated This can be easily overcome by connecting a GDI SSR Radio at the Master location and one at the Aux Master location to form a radio bridge Set the Master and Aux Master to DTE operation The same recovery technique can be achieved by replacing the radios with GDI Model 496 FSK modems operating over 2 or 4wire circuits At the Aux Master location use the KOD function to raise RTS to initialize the FSK transmission sequence PRELIMINARY FDM3SA Users Guide 01531 Rev Single Ring Operation RTU RTU Controller Controller T1 FDM Slave 3 R1 FDM Slave 1 T1 FDM Slave 2 RTU Controller This configuration is useful when there is only one fiber available from modem to modem it has the lowest security of all configurable systems should the ring be broken then the system will collapse Modem DIP Switch Settings for 9600 8N1 The Dip Switch settings listed below show what would be required to set the modems to operate at 9600baud 8 1 this is a typical setting for the traffic industry all other switch positions not shown are in the Off position or other selection Master Modem Slave Modem Slave Ring RS232 RS232 9600 9600 None 5 5
16. decide to fix the model 400 yourself Trouble Shooting Chart PROBLEM CAUSE The board is non functioning Power coming into the board or could have a problem Check connectors Modem is not transmitting No RTS or TXD coming from Host Transmitter turns Off after a few Anti streaming is turned on seconds 2 4 ___ PRELIMINARY FDM3SA Users Guide 01531 Rev 37 Wave Forms Master Clock 32Mhz i anas a aces urs arene Le 2 00 M20 0ns A Chi 1 68 V LOS signal No signal With signal n mur m roov Mi 00us A Chi 120mV 100 M1 00us A Chi 120mV Fiber RX Positive side Negative side Ln roov 3 rur 3 44 Le eT Stas FE 344v PRELIMINAY FDM3SA Users Guide 01531 Rev 38 KOD Pin 2 of RJ45 PRELIMINAY FDM3SA Users Guide A01531 Rev Voltage Measurements Alignment Procedures The FDM3SA requires no alignment PRELIMINAY 39 40 FDM3SA Users Guide 01531 Rev Electrical Interconnection Details amp Drawings 5 JR sive di TSO JOGOO aeger pug spaoo
17. equires that two fibers to be connected from modem to modem until a dual counter rotating ring is formed The advantage of this format is that if there is a fiber cut between any modems or a modem failure the adjacent modems straddling the malfunction will automatically fold back into Ring 2 causing the system to self heal by forming a new ring See Foldback illustration on the next page FDM Slave1 R2 T1 Modem DIP Switch Settings for 9600 8N1 The Dip Switch settings listed below show what would be required to set the modems to operate at 9600baud 8N1 this is a typical setting for the traffic industry all other switch positions not shown are in the Off position or other selection Master Modem Slave Modem Master Slave Anti Stream 2Seconds _ ____ ______ Aux Port Normal Aux Port Modem 1 ________ PRELIMINARY FDM3SA Users Guide 01531 Rev A Foldback Condition TMC Computer RTU Controller Controller A See Ring Status Displays Below Normal Fiber Status LOS4 R1 T1 Under normal conditions all the modems would have a static Z display showing two ring operation E L Los With a failure of any Slave or a cable cut the adjacent modems would fold back to form a new ring thus maintaining communications Next a message is sent to all the other modems in the system to flash their displays once a second to indicate a ring fold back
18. ernal Battery Back up for optical continuity ENVIRONMENTAL Temperature 37 to 740 C Humidity 95 non condensing PRELIMINARY FDM3SA Users Guide 01531 Rev A INSTALLATION The Front Panel displays status information about how the FDM3SA is connected to the network The Rear Panel is where the host connection is made to the modem and the configuration switches are accessible on the bottom of the unit Two Data Ports are provided Main and Auxiliary the main Data Port RJ45 typically connects to the local controller while the Auxiliary RJ45 connector can be used to branch out to other networks The FDM3SA has an optional battery backup system that maintains optical connectivity in the event that there is a power failure Front Panel Displays The FDM3SA front panel has two information displays 1 The 7 Segment display indicates fiber status and fiber ID 2 The LED display indicates data port activity Anti Streaming status and battery charging status pata GDI COMMUNICATIONS LLG RX DATA Q AMTI STR WARNING Do not look into the Fiber Ports ANTI STR 0 RESET PRELIMINARY FDM3SA Users Guide 01531 Rev A TXD LED indicates data activity from the fiber network to the data port i GD RXD LED indicates data activity from the data port to the fiber network oe ANTI STR LED indicates that the anti streaming time has been exceeded ANTI STR RESET pus
19. ex A communication system where data can be transmitted in only one direction at a time FSK Frequency Shift Keying Communication protocol where data is encoded into binary format and represented by different frequencies Host Any DTE device MARK Signal state of a FSK system that represents a logical 1 value Private wire Telco communication hardware that is leased for private use SPACE Signal state of a FSK system that represents a logical 0 value 0 dBm Represents the signal level required to produce 1mw 6000 load Soft carrier Signal transmitted at the end of data to quiet the lines and turn the receiver off Surface mount parts Electronic parts that are designed to be soldered to pads instead of vias RXD Receive Data EIA RS 232D data signal that transfers information in form of binary data to a DTE RTS Request To send An EIA RS 232D control signal that can be used to gate TXD to a DTE The DTE asserts RTS and then waits for the DCE to respond with CTS TXD Transmit Data An EIA RS 232D data signal that transfers information in form of binary data from a DTE PRELIMINARY FDM3SA Users Guide 01531 Rev GENERAL DESCRIPTION The FDM Series of Hardened Modems are designed for polling applications utilizing RS232 422 Asynchronous transmission over Singlemode Fiber Optics All modems in the series are communications compatible with each o
20. f the fiber system using Dual Seven Segment displays making diagnostics visually simple All FDM series modems have the unique capability of Fiber Identification which is displayed on the front panel PRELIMINARY 3 FDM3SA Users Guide A01531 Rev Other advantages include dual data ports enabling branch circuit capabilities such as an on street master to local controller same location or auxiliary wired or wireless networks All modems have the unique capability of having their Auxiliary Port switched from DCE to DTE mode and then generate RTS prior to data flow this is essential for half duplex 2 wire networks The FDM Series represents a new generation of digital fiber optic modems utilizing a Replaceable Operating System ROS As requirements change or new features become available a new program can be loaded so as to provide a migration path to upgrade the existing system PRELIMINARY FDM3SA Users Guide A01531 Rev GENERAL CHARACTERISTICS Standalone Dual parallel RS 232 or RS485 422 RJ45 jacks Data Rate Up to 115 2 Kbps Asynchronous MTBF In excess of 100 000 Hrs Dynamic Range 23db 1310nm SM CTS Delay time 0 or 8 ms Anti Streaming 2 to 126 seconds Data Rate 1200 2400 9600 19200 38400 56700 115200 Bps FORM FACTOR Stand Alone 1 54 H X 5 750 W x 8 4 D Aluminum case POWER REQUIREMENTS Stand Alone 18 30 VDC Optional External 115 VAC Supply External 220 240 VAC Supply Int
21. h button resets the ANTI STR LED and internal alarm ANTI STR RESET The seven segment displays indicate the current fiber network status Each of the red segments represents a data path through the modem The LOS dots indicate a Loss Of Signal on either of the two optical receivers Additionally the display will ensure that the correct fiber cables are connected to the correct fiber ports If the fiber cable from T1 is connected to R2 a 1 will be displayed on the display for R2 This indicates that T1 is connected to R2 When the fiber cable is disconnected from R2 and then connected to R1 the 1 will go away and the LOS indicator dot for R1 will stay off indicated that the proper cable has been connected to R1 When all cables are connected to the proper ports the segments will display a complete data path similar to the above display See Fiber Identification Techniques for more details The fiber cable connected to R1 should be The fiber cable connected to R2 should be connected to R2 connected to R1 PRELIMINARY FDM3SA Users Guide 01531 Rev A Fiber Status Displays for Redundant Rings and Daisy Chains Loss of Signal Causes Local LOS and Fold Back to Common Displays c Flash Ring Alarm Condition 2 LOS 4 R1 Pike eae R1 T2 9 c0 mm Normal Display Loss Of Signal t 12 R2 T2 R2 Displays not Flashing LOS LED s Flashing g L
22. has taken place The above diagram shows a catastrophic event at Slave 2 with the resulting graphics displays below FORM Slave 3 Master Slawe 1 Fold Back indication Indicates Fiber Communications 1 Fold B ack indication are goal in this segment PRELIMINARY FDM3SA Users Guide 01531 Rev A Auxiliary Master Schemes for Dual Rings Set the rear dip switch to Aux Master Co Located Aux Master 2 232 ices ca ou If the Master FDM fails the Auxiliary Master will take over At the Master switch the Aux Port to DTE operation see page 17 3 DTE Operation Disaster Recovery Remote Emergency Center for Disaster Recovery Controller TMC Computer Slave FDM Aux Main Data Master Master Main Data Port 1 FDM Port 1 FDM Slave FDM Controller In this example the Master and the Auxiliary Master are in separate locations Should a disaster occur at the main TOC the Auxiliary Master would then become the master at the remote location PRELIMINARY FDM3SA Users Guide A01531 Rev Remote Located Aux Master for Disaster Recovery on Linear Cable Installations GDI SS Radio GDI SS Radio Controller Controller p TMC Computer This type of installation h
23. het or A lens grade tissue which is then moistened with 90 or better Isopropyl Alcohol Do not use rubbing alcohol as this contains oil for lubrication and will leave a smear or film which will degrade the Optical Return Loss and also cause particulate matter to stick to it or Dry Method This involves using a special device that looks like a small videocassette tape containing a paper like material instead of magnetic tape The connectors ferrule is inserted into an opening and the tape is wound on thus polishing the end face There are several versions of this device readily available from supply houses Note This only polishes the end surface and does not clean the ferrules cylindrical surface that contributes to axial alignment Air Duster A can of compressed inert gas with a plastic extension tube Make sure that any liquid propellant has been discharged from the tube before using on the optics Lint Free Tissues Lint free tissues used to clean fiber optic surfaces Does not introduce any contaminates Always keep sealed in a Ziploc bag to avoid contamination when not in use Do not re use the tissue discard it Dust Caps A supply of Clean Dust Caps note that there are two sizes one for connectors the other one is slightly smaller and is used for the optical ports on patch panels and transmission devices Store them in a Clean Zip Lock Bag The following scenario outlines the steps taken when disconnecting and then
24. his is the optical wave guide or glass fiber this has a diameter of 125um In the Human Hair E center of the glass fiber is an area called the Core which in Multimode fiber is 50 or 62 5microns in diameter it is this core that carries the optical signal As stated multimode core diameters are usually 50 microns Europe or 62 5 microns North America but in the high bandwidth spectrum of singlemode fibers the core size is 80 smaller than the fibers diameter of 125 microns and measures less than 10 microns across It should now be obvious that any particulate matter would prevent your fiber optic communications system from working so KEEP IT CLEAN Clean Fiber For instance when inserting a fiber connector into the FDM if the end face of the fiber comes into contact with the metal bulkhead the plating from the bulkhead can flake off and become attached to the fiber causing attenuation of the light signal possibly to the point of no communication Particulate Another source of contamination is the oil from the human skin The oil coats the end face and attenuates the signal Much like an iced up windshield on a automobile PRELIMINAY FDM3SA Users Guide 01531 Rev 43 Materials needed to clean Optical Patch cords Wet Method Typically these are lens grade tissue pre moistened with a solvent that has a concentration of 90 or better of Isopropyl Alcohol and sealed in a foil sac
25. i Stream Anti Stream 2 Seconds ____ 2Seconds 1 25 Aux Port Normal Aux Port Normal Aux Port Normal Aux Port Normal PRELIMINARY FDM3SA Users Guide 01531 Rev A Status Display Normal Fiber Indication No Flashing Displays FDM Middle Slave s Middle Slave s End Slave Master LOS 105 105 105 _ _ m _ _ m _ _ T2 R2 T2 R2 T2 R2 T2 R2 L Los L Los L Los L Los Note mo To visually indicate the start and end of a Daisy Chain Dual Ring n Ring set the end modems to Daisy Chain this also turns off 2 lt 9 R s the LOS indication for the unused receiver s R1 and R2 54 Lr Lr LIE Lem Le 1 LH Lr Lr Lis Lim Lr FPS 8 Ring Fer Ring Set all other modems to 2 Ring only _ Daisy Chain Ring PRELIMINARY FDM3SA Users Guide 01531 Rev A Fiber Alarm Notification All Displays Flashing Next we show a cable cut anywhere in the mid span Slaves this results in isolating the down stream modems from the polling Master FDM Middle Slave s Middle Slave s End Slave Master LOS 7 LOS 105 7 LOS R1 T1 R1 T1 R1 T1 R1 T1 T2 R2 T2 R2 T2 R2 T2 R2 L LOS L LOS L LOS L LOS Fold Back indication Indicates Fiber Communications are Indicates Fiber Communications are good on this segment good on this segment
26. king Anti Streaming and whether the Aux Port is a DCE or DTE 2000 BTXD 4GND TCTS 5RXD BATS UNUSED 1 amp 3 AUX ELA232 485 1 B 2DCD amp TXD 4GND 7 CTS 5RXD BRTS UNUSED 143 MASTER ax ASTER MASTI DUAL DAISY HAIN sr PARITY RG BAUD RATE 4 4 F 000 GTa GDI Communications Verdi Nevada Tel 775 345 8000 Fax 775 345 8010 LBB AD Pin out connection diagrams are also included on this panel to assist the technician when making interconnect cables Switch settings are described in the Installation Section PRELIMINARY FDM3SA Users Guide 01531 Rev See Appendix A Care and Handling Procedures for Optical Connectors for a brief overview of how to clean optical connectors Dynamic Range For any system to work reliably there must be adequate signal level at the receiver The modem must have a larger Dynamic Range expressed in db than the cables end to end attenuation db All Single mode FDM series modems have a dynamic range of 25DB Steps necessary to determine reliable operation Determine if your fiber is Multi Mode or Single Mode Using an Optical Power Meter measure the End to End Attenuation of your fiber pair including all patch cords at the operating wavelength Add a minimum of 3db safety margin to this figure The Dynamic Range must be larger than the overall attenuation obtained in step 3 for reliable operation PRELIMINARY
27. mande Aux Port R45 DCD RXD Controller CTS another controller The following drawing shows the signal flow information Aux Port configured as DTE DYN DCD ON KOD EN ON 1 Nain Port Controller RJ45 The Auxiliary Port now looks like the On Street Master s DTE port complete with RTS CTS Handshaking This provides the necessary flow control for either a local controller or another modem This feature allows the Main Port s attached DTE device On Street lt Master to drive the fiber and appear as a DTE at the Auxiliary Port X Fiber Transcievers PRELIMINARY FDM3SA Users Guide 01531 Rev Fiber Identification Techniques This method assumes the technician is dealing with the worst case i e no fibers are assigned or labeled at each modem location just patch cords Let s assume that we are installing a Daisy Chain down an arterial roadway at each end of the system you will have only two fibers therefore set these modems to Daisy Chain and all others leave at 2 Ring At all locations in between there will be four fibers Two from downstream and two from upstream All fibers are disconnected from the modems M r Los aste Starting at the Master location power up the modem and R1 T1 connect the two fibers into T1 and R2 EN R2 L Los At the next location power up the modem and connect Los Slave 1 each patch cord one a
28. n to be displayed LOS 17 487 PRELIMINARY FDM3SA Users Guide 01531 Rev Daisy Chain Operation Single String Daisy Chain TMC Compute DATA RTU Controller T1 R1 T1 R1 FDM FDM Slave Slave 3 20 R2 R2 T2 A4 RTU Controller This configuration is used when there is no fiber ring available only one pair of fibers available from controller to controller a typical application would be a TMC feeding an arterial string and terminating at the far end Controller Note This configuration has no redundant path Any failure along the string Will cut off all down stream communications past the point of failure Modem DIP Switch Settings for 9600 8N1 The Dip Switch settings listed below show what would be required to set the modems to operate at 9600baud 8N1 this is a typical setting for the traffic industry all other switch positions not shown the Off position or other selection Note Anti Streaming is always off at a Master optional for all Slave Modems Master Modem Middle Slaves End Slave Master X Slave 2Ring A 2Ring X 2Ring 2Ring Daisy Chain Ring Ring RS232 RS232 RS2322 RS2322 ____ 9600 9600 9600 9600 None Nome RTS CTS RTS CTS RTS CTS RTS CTS CTS 0ms CTS 0ms CTS 0ms CTS 0ms Off Anti Stream Ant
29. nd of the optical connector if fitted and store in a clean Ziploc bag for future use at this site Do not touch the ferrules surfaces with your fingers em Using the Air Duster use short bursts to clear any dust from the connector particularly from the ferrule area PRELIMINAY FDM3SA Users Guide 01531 Rev 45 Remove the Optic Prep Wipe from a sealed packet and start the cleaning process Do not put the wipe down on any surface as this will contaminate it and render it useless Using this clean pad clean the end face of the ferrule and its circumference Do not be afraid to apply pressure when cleaning Use the same pressure as if you were cleaning eyeglasses Using the Air Duster use a single short burst to clean and dry the ferrule before starting the re connecting process Do not touch the ferrule again as you might contaminate it Remove the dust cap from the mating receptacle and store in the clean Ziploc bag for future use Hold the connector locking mechanism between thumb and forefinger Allow the little finger to steady the hand by holding it against the chassis or patch panel during the insertion process With the little finger in contact with the panel there is a reduced chance of the ferrule touching any contaminated non mating surfaces Insert the ferrule into the receptacle and slowly rotate the connector until the key aligns itself with the receptacles keyway then push the connector home and eng
30. re mating one end of a Patch cord from an optical device such as a patch panel or transmission equipment PRELIMINAY FDM3SA Users Guide 01531 Rev 44 WARNING Invisible Laser Energy Can Damage Your Eyes Do not look into the end of an Optical Connector It may be emitting potentially harmful energy that can damage your eyes If possible disconnect the other end of the cable or turn the power Off on the transmitting device Do not look into the transmitting port of an Optical Transmitter with out first turning the power to that device Disconnecting the Optical Connector Any accumulation of dust that has settled around the optical connectors must first be removed by using short bursts of compressed air from the Air Duster In high dust areas use pre moistened tissues or lint free tissues moistened with alcohol to wipe off excessive dust and then use the Air Duster this will reduce the possibility of dust contaminating the optical connector as well as the optical receptacle Do not re use a tissue discard it Disconnect the optical connector and put a clean protective dust cap over the end If you don t have a dust cap use a clean Ziploc bag or worst case temporary suspend the connector in free air and make sure it does not touch any other surface Do not leave the exposed receptacle without any protection cap it with a clean dust cap Reconnecting the Optical Connector Remove the dust cap from the e
31. rive longer distances than RS232 over 2 pairs of balanced transmission lines Baud Rates The selectable Baud Rates are 1200 2400 9600 19 2k 38 4k 57 6k and 115 2k PRELIMINARY DUAL RING DAISY CHAIN 1 SINGLE RING FDM3SA Users Guide 01531 Rev on Parity Parity be for None Odd Even E5 Switch settings shown are for even parity ELI For no Parity select None go v Lm I RTS CTS Handshaking When CTS is set to constant data arriving at either data 5 port will be transmitted over the fiber ES LL Lm sid When CTS is set to switched RTS must first be asserted for i i CTS to be activated Once CTS is activated data arriving at either data port will be transmitted over the fiber E CTS Delay eS ERR oes CTS The time after RTS is asserted to when CTS is activated can be configured to either Oms 8ms PRELIMINARY FDM3SA Users Guide 01531 Rev A Anti Streaming Anti Streaming times 2 4 8 16 32 and 64 seconds all are switch selectable and are additive to a maximum of 126 seconds If the Anti Str switch is set to ON when RTS is asserted the anti streaming timer starts running When the timer reaches the selected time the data path to the fiber port is disabled CTS is lowered and the anti streaming LED turns on Q TX DATA RX DATA Q ANTI STR CHARGING ANTI STR
32. t time into R2 R1 T When the modems display indicates 1 insert that patch ai cord into R1 T2 R2 L LOS Slave 1 The remaining three patch cords are then rotated through p T T2 until you see the Fold Back display 71 The master modem will now display Daisy Chain FDM Master LOS 5 LOS 5 R1 T1 R1 T1 T2 R2 T2 R2 L Los L Los Slave 1 Continue steps 2 and 3 until you reach the end of the Daisy Chain Middle Slave s Middle Slave s End Slave 105 105 105 105 _ _ ZZ _ _ _ 2 R2 T2 R2 T2 R2 T2 R2 L LOS L LOS L LOS L LOS PRELIMINARY FDM3SA Users Guide 01531 Rev A Factory Default Settings The FDM3SA is shipped from the factory with the following DIP Switch settings enabled Data Port Pin Out Assignments RS 232 Female TXD RXD GND vi 5 1 9 OOOO 6 vA CTS RTS NO CONNECTION PINS 4 6 9 NONE 200 Switched CTS Constant CISTE BETAN Ome ANTI STREAM 16 Master 64 RS 232 RJ45 LA 2 DCD 6 TXD 4 GND 7 CTS 5 RXD 8 RTS NO CONNECTION PINS 1 3 PRELIMINARY FDM3SA Users Guide 01531 Rev Applications Self Healing Dual Counter Rotating Ring Operation TMC Computer RTU RTU Controller Controller T1 R2 FDM Slave 3 R1 T2 Dual Counter Rotating Ring Format FDM Slave 2 Controller This format r
33. ther thus allowing greater flexibility of use The FDM Series comprises of six Modems The FDM3SA is a Stand Alone version The FDM170 is a Plug in version for the 170 Controller The FDM2070 is a Plug in version for the 2070 Controller The FDM FiberHub performs as 1 x 3 star optical hub that ties in optical branch circuits into the mainstream communications path The FDM FSK is a combination of a FDM3SA and a FSK modem The FDM SSR is a combination of a FDM3SA and a Spread Spectrum Radio The modems can operate in many different topologies even on a simple fiber ring when there is only one fiber available later as more fibers become available simply flip a switch to change to the new topology This unique capability of operating in multiple topologies offers the advantage of One Modem for all Topologies Switch Selectable and Operating Topologies are as follows Single Fiber Ring Dual Fiber Redundant Ring Self Healing Point to Point Daisy Chain Format The modems have a high dynamic range yet they are immune to optical over loads therefore no optical attenuators are required for short runs or even bench top back to back testing The Fiber optic transceivers are fully Protected Optics Any modem can be configured as a Master or Slave also for Auto Recovery any modem can be configured as an Auxiliary Master A unique and intuitive monitoring system graphically indicates the status o
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