USER`S MANUAL - Communications Specialties, Inc.
Contents
1. FIBERLINK XC 1000A RC 1000A XC 1000A MCR RC 1000A MCR Status Contact Closure Control System USER S MANUAL UL a 55 Cabot Court Hauppauge N Y 11788 USA TEL 631 273 0404 FAX 631 273 1638 INTERNET http Wwww commspecial com EMAIL info commspecial com P N 101961 Rev CONTENTS Quick Installation Ode 2 General Informations ernier en cB Ne eke uman E ya EP te 3 Introduction Technical Specifications Theory of Operation Functional Block Diagram Installation Instructions for XC 1000A n 6 Installation Procedure Signal and Power Connections Operating Pointers Installation of XC 1000A MCR Installation Instructions for RC 1000A naa 9 Installation Procedure Signal and Power Connections Operating Pointers Installation of RC 1000A MCR Interface Troubleshooting n 12 Operating Considerations for Fiber Optic Cable 14 Overall System Checkout and Troubleshooting Techniques 16 Maintenances e ch A Ae ee EE 19 Statement Of Warranty sss 20 QUICK INSTALLATION GUIDE The following is a quick installation guide for the Fiberlink XC and RC 1000A It is intended for users familiar with the installation of fiber optic transmission systems to get up and running in minimal time For additional details please consult the balance of2. THE OPERATING WAVELENGTH US Government regulations require that all equipment using Laser Diodes be clearly identified with warning labels Be sure to heed these labels Notes Regarding Fiber Optic Cable Multimode fiber optic cable contains an optical fiber with a light carrying core that is only 0025 inches 62 5u diameter Single mode fiber optic cable has an even smaller core only 00032 to 0004 inches 8 10u This is smaller than a human hair Any minute particle of dirt or dust can easily block this fiber from accepting or radiating light As a result the key word is cleanliness Always use the dust caps provided with all optical connectors whenever they are exposed to air Also it is a good idea to gently clean the tip of an optical connector with alcohol whenever dust is suspected Mechanical butt splices or optical feedthroughs must be installed properly Multimode devices will not operate properly with single mode devices even though they may look the same Using the wrong device can easily add more attenuation than specified with the result that performance will suffer Operating Pointers Driving The input to the XC 1000A is TTL compatible with an input Signal impedance of about 3k ohms per channel A 5 volt input or TTL logic 1 level indicates a closed contact while a 0 volt input or TTL logic 0 level constitutes an open External contacts connected to this unit a
3. extremely careful when making connections Please note that the AC and DC common is connected to the enclosure The mating power connector for this system is an Amphenol 126 223 or equivalent Operating Pointers Output The contact closure output signal of the RC 1000A is provided by Signal reed relay contacts that are isolated from any other part of the circuit The 0 5 ampere ratings of these contacts must not be exceeded External relay coils driven by the RC 1000A must have back EMF diodes installed across their coils or damage to the RC 1000A will occur and void any existing warranty The TTL outputs are provided by standard TTL drivers Indicator The output status of the RC 1000A channels are monitored by eight LEDs indicator LEDs ON indicates that the contacts for a particular channel are closed OFF indicates that they are open Power The DC power input to the RC 1000A is connected to an internal 3 Supplies terminal regulator Input can therefore be unregulated DC from 10 to 18 volts Any ripple voltage must not drop below 10 volts however The AC input to the RC 1000A is connected to a half wave rectifier and regulator that produces 10 volts internally Input can there fore be anything between 10 and 18 volts AC 50 60 Hz This voltage can be obtained from an inexpensive transformer or an XP 1000 115 volt to 14 volt plug in adapter if desired Optical Versions of the RC 1000A are available to operate
4. this manual Stand Alone Unit Optical Connectors Power Connector with Na lt Loss of signal contact for RC 1000A Contact closure input for XC 1000A output for RC 1000A Sensitivity Adjustment for RC 1000A Channel Input Output TTL not used on Contact inputs are between XC 1000A channel pin and pin 9 TTL 1 4 1 2 17 inputs are between channel 2 2 3 4 18 pin and pin 10 3 3 5 6 19 4 4 7 8 20 Contact outputs are between 5 5 910 21 pins indicated TTL outputs 6 6 41 12 22 are between pins indicated 7 7 13 14 23 and pin 25 8 8 15 16 24 5vREF 9 Common 10 25 Due to the possibility of confusion regarding this system it is advisable to read the entire User s Manual for interconnection details Card Cage Mountable Unit The Fiberlink XC 1000A MCR and RC 1000A MCR are designed to plug directly into an available slot in the MCR 1000A rack mountable card cage When this is done all operating power is provided by the MCR 1000A GENERAL INFORMATION Introduction The Fiberlink XC 1000A is a multiplexed digital transmitter that will convert up to 8 channels of individual contact closures or TTL signals to modulated light which can then be sent over a fiber optic cable The RC 1000A is a digital demultiplexing receiver that will convert the modulated light from an XC 1000A back into 8 individual contact closures or TTL signals corresponding to the contac
5. Connection Please note that the AC and DC common is connected to the enclosure The mating power connector for this system is an Amphenol 126 223 or equivalent OVERALL SYSTEM CHECKOUT AND TROUBLESHOOTING TECHNIQUES Occasionally during the installation of a fiber optic system difficulties arise that are the result of factors beyond the control of the installer It is to simplify the task of the installer that the following general checkout procedure is included A Check Transmitter or Transmit Section of a Transceiver 1 2 3 4 Is operating power DC AC Voltages correct Are the correct pins on the connector or terminal block being used Is the correct signal level present at transmitter input Does the transmitting LED glow dimly when a signal is applied Note that this is only true for an operating wavelength of 850 nm Units at 1310 nm are totally invisible If the unit is an analog or video transmitter at 850 nm is there a continuous dim glow from the transmitting LED Is the optical connector on the transmitting LED clear of any obstruc tion or minute dirt particles Does the fact that the power ground and signal ground of many systems are common matter Does the fact that the power ground signal ground and case are common cause a short circuit anywhere in the system The above visual check should only be attempted with LEDs NEVER LOOK DIRECTLY AT AN OPERATING LASER DIODE REGARDLESS OF
6. FOR RC 1000A Installation Procedure The RC 1000A is usable over an optical attenuation range that is a function of fiber core size Since all installations have attenuation levels that vary due to fiber attenuation it will be necessary to adjust the unit to compensate for the length of optical fiber being used To do so entails the following procedure 1 It will be necessary to have a source of 10 to 18 volts DC or 10 to 18 volts AC 50 60 Hz Be certain to make all connections carefully and to check that the correct pins are being used 2 Turn the adjustment control located near the optical connector on the housing fully counterclockwise 25 to 30 turns will assure this 3 Connect the fiber optic cable to be used in the system from an operating XC 1000A transmitter to the RC 1000A and activate the contacts corresponding to channel 1 on the XC 1000A 4 Connect an ohmmeter between the output contacts of channel 1 on the RC 1000A 5 Slowly turn the adjustment control on the RC 1000A until the contacts for channel just close Then turn the control 1 4 turn further 6 Check that the LED indicating the status of channel 1 on the RC 1000A is also lit 7 Repeat this procedure to be certain that the other channels operate properly 8 This completes alignment of the receiver Pin H on the 5 pin power connector can be used as a loss of signal or broken fiber detector It is an open collector that will conduct with re
7. ctually switch the 5 volt reference source into the input pins Indicator The actual status of the individual input channels is indicated LEDs by the eight indicator LEDs on the unit An LED that is on indicates a closed contact while an LED that is off indicates an open contact Power The DC power input to the XC 1000A is connected to an Supplies internal 3 terminal regulator Input can therefore be unregulated DC from 10 to 18 volts Any ripple voltage must not drop below 10 volts however The AC input to the XC 1000A is connected to a half wave rectifier and regulator that produces 10 volts internally Input can therefore be anything between 10 and 18 volts AC 50 60 Hz This voltage can be obtained from an inexpensive transformer or an XP 1000 115 volt to 14 volt plug in adapter if desired Optical Versions of the XC 1000A are available to drive most multimode Fiber MM and single mode SM optical fibers The specific models are identified by a suffix at the end of the model number as follows Fiber Size Connector 850nm 13 nm 50u 62 5u MM ST 1 3 8 10u SM FCPC 7 Installation of the XC 1000A MCR The XC 1000A MCR is exactly the same as the XC 1000A except that it is packaged for use in the MCR 1000A card cage Installing the unit entails simply plugging it in a free slot All operating power is then provided by the MCR 1000A Signal connections are the same as for the XC 1000A INSTALLATION INSTRUCTIONS
8. for a period of three years after purchase by the Buyer all Fiberlink transmission systems will be free from defects in material and workmanship under normal use and service A Return Material Authorization RMA number must be obtained from Communications Specialties before any equipment is returned by the Buyer All material must be shipped to Communications Specialties at the expense and risk of the Buyer Communications Specialties obligation under this warranty will be limited at its option to either the repair or replacement of defective units including free materials and labor In no event shall Communications Specialties be responsible for any incidental or consequential damages or loss of profits or goodwill Communications Specialties shall not be obligated to replace or repair equipment that has been damaged by fire war acts of God or similar causes or equipment that has been serviced by unauthorized personnel altered improperly installed or abused RMA numbers and repairs can be obtained from Communications Specialties Inc 55 Cabot Court Hauppauge N Y 11788 USA Tel 631 273 0404 Internet www commspecial com FAX 631 273 1638 Email info commspecial com Please have your serial number available when contacting us 20 MAINTENANCE The Fiberlink XC 1000A and RC 1000A have been manufactured using the latest semiconductor devices and techniques that electronic technology has to offer They
9. have been designed for long reliable and trouble free service and are not normally field repairable Should difficulty be encountered Communications Specialties maintains a complete service facility to render accurate timely and reliable service of all products The only maintenance that can be provided by the user is to ascertain that optical connectors are free of dust or dirt that could interfere with light transmission and that electrical connections are secure and accurate All other questions or comments should be directed to our Customer Service Department It should be noted that many problems can easily be solved by a simple telephone call Theory of Operation The Fiberlink XC 1000A first converts the individual contact closure inputs to a TTL signal This TTL signal is then applied to a digital multiplexer which combines the eight inputs into a serial pulse train for transmission When dry contacts are used they switch a reference 5 volt input to the respective chan nels When TTL inputs are used they are applied directly The RC 1000A uses a digital demultiplexer to recover the respective channels in the form of TTL signals These are then used to drive reed relays to provide the isolated dry contact outputs Since there is always a continuous pulse stream through the multiplexer demultiplexer combination the loss of this pulse stream signifies a loss of signal Contact TTL Inputs LED Driver Input M
10. not be exceeded The TTL output from each channel is designed to drive one TTL load The use of more than one may cause the output to not perform properly The alarm output consists of an open collector that conducts upon loss of signal This collector is rated at 25 milliamperes and is not reverse polarity protected so it is extremely important to check all connections carefully Signal and Power Connections DB 25 Signal Connector Contacts TTL Channel 1 Pins 1 2 Pin 17 Channel 2 Pins 3 4 Pin 18 Channel 3 Pins 5 6 Pin 19 Channel 4 Pins 7 8 Pin 20 Channel 5 Pins 9 10 Pin 21 Channel 6 Pins 11 12 Pin 22 Channel 7 Pins 13 14 Pin 23 Channel 8 Pins 15 16 Pin 24 TTL output common Pin 25 The mating electrical connector for this system is an EIA standard DB 25P 5 Pin Power Connector PIN FOR DC OPERATION FOR AC OPERATION A No Connection 10 to 18 volts 50 60Hz B 10 to 18 volts No Connection D DC Common AC Common E No Connection No Connection H Loss of Signal Detector Loss of Signal Detector Pin H can be used as a loss of signal or broken fiber detector on the RC 1000A It is not used or connected on the XC 1000A In operation when the signal is lost usually caused by a fiber break pin H which is an open collector will conduct with respect to pin D This pin will sink up to 25 milliamperes from a source of up to 25 volts DC This output is also not reverse polarity protected so it is important to be
11. protruding from the tip of the connector If so refinishing will be necessary C Check Fiber Optic Cable 1 2 Is the fiber optic cable pulled too tightly around a sharp corner Is the correct fiber size being used with the correct transmitter receiver combination Does the fiber pass light at all A small penlight or flashlight can usually be used for this test Does the fiber have too much attenuation for the system The attenua tion measured on the reel will always be different after the cable is installed When using very short lengths less than 10 meters 30 feet overload ing of the recelver may occur The shorter the length of the fiber the greater the possibility for this condition Be sure there is adequate attenuation in any system If this seems to be the case or if operation with a meter or so of fiber is required contact the factory INSTALLATION INSTRUCTIONS FOR XC 1000A Installation Procedure The Fiberlink XC 1000A is supplied ready for immediate operation There are no operating controls on the unit and no special user alignment procedure Installation of the XC 1000A is as follows 1 It will be necessary to have a source of 10 to 18 volts DC or 10 to 18 volts AC 50 60 Hz Be certain to make all connections carefully and check that the correct pins are being used 2 Connect the desired contacts to be used between the respective channel input pin and the common voltage pin pin 9 Alternatel
12. spect to pin D when the signal being received by the RC 1000A is interrupted or lost Up to 25 milliamperes of current can be accommodated by this pin from a source of up to 25 volts DC OPERATING CONSIDERATIONS FOR FIBER OPTIC CABLE The XC RC 1000A series may be supplied with ST or FCPC type optical connectors and will operate with most common fiber optic cables Since the system can be provided for operation at a wavelength of 850nm or 1310nm the fiber optic cable employed should be chosen so that it is optimized for use at the appropriate wavelength Due to the small size of the actual optical fiber correct alignment is imperative When using any type of fiber optic cable be certain to not cause excessive strains especially at the cable to connector junctions Also do not subject the cable to sharp bends or pull around sharp corners Whenever possible service loops or extra slack should be provided in any installation While excessive precautions are not necessary fiber optic cable should be treated with moderate care as it does contain thin fragile strands of glass RC 1000A Each channel s output from the RC 1000A is a floating dry contact closure from a small internal reed relay that is isolated from all other points of the circuit These contacts are rated at 0 5 amperes resistive and must not be overloaded or they will fuse and stick In addition the open circuit contact rating of 100 volts must
13. t closures in the transmitter The XC 1000A MCR is a card cage mountable version of the XC 1000A The RC 1000A MCR is a card cage mountable version of the RC 1000A Both are designed to mount in a standard Communications Specialties MCR 1000A card cage enclosure All specifications instructions and details in this manual apply to all versions of these units Technical Specifications Number of Channels 8 Speed of Response per channel 2 0 milliseconds typ Transmit Signal Dry Contact Closure or TTL input Logical 1 Input When TTL s 0sseseseeee 2 5V min 5 5V max Logical 0 Input When TTL s sssseeeeseeee 0 8V max 0V min R celVeiSip nal u u ates ees Dry Contact Closure or TTL output Logical 1 Output When TTL 2 4V min 3 3V typ Logical 0 Output When TTL 0 4V max 0 2V typ Receive Contact Rating 0 5 ampere resistive 100volts peak maximum Optical Loss Budget 50u Fiber 0 8 dB 62 5u Fiber 0 10 dB 8 10u SM Fiber 0 10 dB Operating Wavelength 850 nm or 1310 nm Optical Connectors ST multimode FCPC single mode Operating Temperature 20 to 50 degrees C WARRANTY Communications Specialties warrants that
14. ultiplexer 5V Ref O O OOO TL ON 00000000 TTL Common Channel LED Indicator Functional Block Diagram of XC 1000A D Check Receiver or Receiving Section of a Transceiver i 1 Is the operating power DC AC Voltages correct Channel LED Indleaters 2 Are the correct pins on the connector or terminal block being used 00000000 Preamplifier GC D d Channel 1 I I 17 TTL 3 Is light coming out of the fiber optic cable This may be difficult to A Channel 2 see in many cases but dim glow may be present with 850nm light mh Other wavelengths such as 1310 nm are totally invisible e Channel 3 Photo Pete 4 Is the optical connector on the receiver optical port clear of any aie 5 Channel 4 obstruction or minute dirt particles L Een 9 Channel5 5 Does it matter that the power ground and signal ground of many ay TTL systems are common 11 Channel 6 12 TTL Loss of D Channel Signal 23 Output P e Channel 8 24 TTL D 25 TTL Common Functional Block Diagram of RC 1000A B Check Optical Connectors 1 4 Are the connectors are being used the correct size for the fiber being used Are the ends of the connectors free of all dust or dirt If not gently clean the tip of the connector with a clean cloth or gauze moistened with alcohol Is the fiber broken in the connector A quick inspection with an inexpensive jeweler s loop can determine this Is the fiber
15. with most Fibers multimode MM and single mode SM optical fibers The specific models are identified by a suffix at the end of the model number as follows Fiber Size Connector 850nm 13 Onm 50u 62 5u MM ST 1 3 8 10u SM FCPC 7 Installation of the RC 1000A MCR The RC 1000A MCR is exactly the same as the RC 1000A except that it is packaged for use in the MCR 1000A card cage Installing the unit entails simply plugging it in a free slot All operating power is then provided by the MCR 1000A signal connections are the same as for the RC 1000A INTERFACE TROUBLESHOOTING XC 1000A The input to the unit must be a dry contact or a TTL signal If it is a dry contact it must switch a 3 to 5 volt level into the input The sketch below shows both the suggested contact arrangement or the TTL input Non dry contact closures with other voltages will not work and may damage the input External Dry Contact free ch Channel pin 1 through 8 5 volt Reference pin 9 TTL Gate Channel pin 1 through 8 E Common pin 10 If an external 3 to 5 volt source is used its common would be to pin 10
16. y connect the TTL logic levels between the desired channel pin and the common ground pin pin 10 3 Check that when a contact is closed or a TTL logic 1 signal applied to a channel pin the proper channel indicator LED lights 4 When the above has been achieved the XC 1000A is ready for operation Note The transmitting element in the 7 single mode version of the XC 1000A uses a solid state Laser Diode located in the optical connector on the unit This device emits invisible infrared electro magnetic radiation which can be harmful to human eyes The radiation from this optical connector if viewed at close range without a fiber optic cable connected to the optical connector may be of sufficient intensity to cause instantaneous damage to the retina of the eye As a result direct viewing of this radiation should be avoided at all times LASER Wa N Signal and Power Connections DB 25 Signal Connector Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Channel 7 Channel 8 5 volt reference TTL input common The mating electrical connector for this system is an EIA standard DB 25P 5 Pin Power Connector Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 PIN FOR DC OPERATION FOR AC OPERATION No Connection 10 to 18 volts DC Common No Connection m D w No Connection 10 to 18 volts 50 60Hz No Connection AC Common No Connection No
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