Model 2802: Professional Singlemode 10 Channel CATV Fiber
Contents
1. G OPTICAL BROADCAST SYSTEMS Model 2802 Professional Singlemode 10 Channel CATV Fiber Optic Link Installation Guide and User Manual IOM2802PRO Revision 1 0 May 2006 Laser Safety Warning The optical emissions from the units are laser based and may present eye hazards Follow all safety precau tions GANGER gt Invisible laser radiation INVISIBLE LASER RADIATION emitted from this connector AVOID DIRECT EXPOSURE TO BEAM Indium Gallium Arsenide Phosphide 1 mW maximum power output Class Laser Product This product complies with applicable BRH standards under the Radiation Control for Health and Safety Act of 1968 Technical Support If you encounter any kind of problem after reading this manual contact your local distributor or a Force Inc Applications Engineer To reach technical support On the Web http www forceinc com By Phone Monday through Friday 8 00 am USA 800 732 5252 to 5 00 pm EST TEL 540 382 0462 By Fax 540 381 0392 By Email csr sales forceinc com 825 Park Street Christiansburg VA 24073 USA 800 732 5252 TEL 540 382 0462 FAX 540 381 0392 csr sales forceinc com www forceinc com 2006 by Force Inc Force reserves the right to make changes to the product described in this document in the interest of product improvement Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Contents Laser Safety Warning 1 Tech2. 1 When the units are shipped they should be wrapped in a protective material such as bubble wrap to pro tect against excessive jarring and to prevent damage to the external finish of the units Always use packing material to separate multiple units that are packaged together 2 Care should be taken not to drop or strike the units in any way especially around the optical connectors 3 The units should never be submersed in any liquid SEVERE SHOCK HAZARD Storing the Unit If a unit is to be out of use for an extended period of time the following steps should be taken to ensure the preservation of the unit 1 The storage temperature range is 20 C to 70 C 2 A low humidity environment is preferable for long term storage 3 All connectors should be covered with active device receptacle caps IOM2802PRO Revision 1 0 15
3. OPTICAL LEVEL m2 id e RX 1 RF TEST Ht E9 2048 5 06 D 128 5 D RX2RFTEST 20d8 j Dorce A fo 1 39 35 3 A Thumbscrews 2 Places Used to secure the module top and E Optical Input 1 and 2 FC APC or SC APC Optical input to RX 1 bottom to the 3RU chassis and RX 2 of the receiver B Power When green indicates the unit is powered and function F RF Output RX 1 and RX 2 F Connector RF output from RX 1 and ing properly RX 2 of the receiver C OPT INPUT LEDs RX 1 and RX 2 Green Yellow Red This gives G Backplane Connection Inserts into the backplane of the Model an indication of optical input level for both receiver channels See 3000 3RU rack chassis allowing the chassis to provide power to page 11 for LED functions the module See IOM3000C for details on the chassis D 20 dB Test Point RX 1 and RX 2 F Connectors Allows the user to measure the receiver RF output levels 20 dB down from the primary output for both channels Figure 6 3RU Return Path Receiver Dimensions in parentheses are in millimeters Inspection Remove the unit from its shipping container Any in shipment damage that may have occurred should be visu ally apparent Look for bent or damaged connectors or mounting brackets Claims for damage incurred in shipment should be made directly to the transportation company in accordance with their instructions Save the shipping cartons until installation and performance verification are
4. Ohm impedance and expect an RF signal input per the values given in See Figure 3 page 5 Note 5 7 Connect power supplies to the transmitter and receiver The power supply must be 9 Volts DC It is crit ical that the supply voltage never drops below 9 Volts If the voltage drops below 9 Volts the link may not operate 8 Apply power The units are now fully operational No user adjustment or attention is required IOM2802PRO Revision 1 0 10 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual LED Functions LED Name Green Orange Red Transmitter is receiving the opti Tx RF Level mum RF input level RF input level is too low RF input level is too high Receiver has the optimum optical Optical input level is below Optical input level is above input 9 0 dBm 4 0 dBm If too much RF is reaching the transmitter input and the LED has turned red reduce the incoming RF level immediately using attenuators to avoid damaging the laser Rx Optical Level Measuring RF Input Levels Excessive RF input to a fiber optic CATV transmitter WILL kill the laser even if the unit is not powered Lasers can be destroyed by being overdriven for as little as one nanosecond 10 seconds Because they can be destroyed so quickly it is essentially impossible to design a circuit or fuse that will blow before the laser is destroyed Therefore it is imperative that the RF level be within acce
5. Units Notes Operating Temperature 10 40 C Storage Temperature 20 70 C Humidity 0 95 7 Specification Notes 1 All optical power levels are average values Transmitter output power levels are measured with a three meter jumper cable Figure 1 illustrates the end to end gain versus optical loss for the 2802PRO link End to End Link Gain dB Optical Loss dB Figure 1 End to End Gain vs Optical Loss 2 The receiver contains a tri colored indicator LED that may be used to determine the optical signal strength reaching the receiver When the LED is green the signal is at optimum input levels When the LED is orange the optical signal has dropped to insufficient levels 9 0 dBm and when the LED is red the signal is overloading the receiver 4 0 dBm Because the LED is always lit it also serves as a positive indication that the unit is turned on 3 The Model 2802PRO offers exceptionally wide bandwidth with a minimum of ripple The unit offers excel lent performance from 5 MHz to about 400 MHz Figure 2 shows the frequency response of a typical link 28 50 27 50 26 50 25 50 24 50 s 23 50 22 50 21 50 20 50 19 50 18 50 Chi Start 5 00000 MHz Stop 500 000 MHz Figure 2 Bandwidth of a Typical 2802PRO Link The vertical scale is 1 dB per division The passband flatness variation is 1 0 dB maximum The TV chan nels trans
6. original selling price of the product less a 20 restocking charge after verification that the product meets the criteria as stated above Payment to customers with no outstanding bal ance will be made 30 days after requested by customer Products Returned for Repair or Replacement Force s response to a customer product return request will be based upon whether or not the product is still part of Force s standard product offering and whether or not the product is still under warranty A product will be considered active if it is currently part of Force s standard product offering Active products are denoted in Force s current price list Obsolete products are not considered active A product is considered under warranty in accordance with Force Inc Product Warranty Prior to receiving an RMA number the customer will be asked to discuss the reason for the return with Tech nical Support to try to resolve the problem This discussion will be documented to aid with troubleshooting and repair of the product Any detail the customer can provide will expedite the process once the product is received The criteria denoted above will cause any incoming returns to fall into one of the following categories A The product is currently active and is under warranty B The product is currently obsolete but is still under warranty C The product is active but out of warranty D The product is obsolete and out of warranty Active Produ
7. pressure air to clean out the optical ports Foam tipped swabs such as the 2 5 mm Mini Foam Swab offered by Fiber Instrument Sales P N F1 0005 may be saturated with denatured alcohol and inserted into the optical port for cleaning DO NOT INSERT A DRY SWAB INTO THE OPTICAL PORT AS THIS MAY DAMAGE THE FIBER END FACE Many fiber optic installations experience degraded performance due to dirty optical connector end faces Download http Avww forceinc com techbull optical connector cleaning pdf for complete instructions IOM2802PRO Revision 1 0 12 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Warranty and Return Policy Warranty Force Incorporated standard products are warranted to be free from defects in materials and workmanship meeting or exceeding factory specified performance standards for a period of three 3 years from date of pur chase Force Obligations Force will at its discretion and expense repair any defect in materials or workmanship or replace the product with a new product Force will upon receipt of the return evaluate the product and communicate to the cus tomer the nature of the problem and determine if the claim falls under warranty coverage If during the warranty period Force is unable to repair the product to the original warranted state within a rea sonable time or if subcomponents of the unit have been obsoleted or discontinued then Force has the option to provide an equiva
8. band The green band is typically about 3 dB wide When the RF input is too high the LED turns red and the picture is likely to be distorted and show inter ference Because the indicator is always lit the LED also serves as a power indicator 10 When using the link with a typical CATV feed such as those found in most homes a filter must be inserted prior to input of the 2802PRO transmitter so that only the appropriate channels reach the 2802 input For instance if CATV channels 2 6 are transmitted then a 50 MHz high pass filter followed by a 100 MHz low pass filter is required Mini Circuits Brooklyn NY offers two models the BHP 50 75 and the BLP 100 75 are well suited for this application 11 The bottom of the unit serves as a heat sink It is imperative that good thermal contact be provided between the bottom of the unit and an external heat sink Silicone grease or pads is recommended to improve thermal conductivity 12 This product conforms to European Community CE directive 89 336 EEC for electromagnetic com patibility requirements IOM2802PRO Revision 1 0 6 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Installation and Operation General Installation Instructions The installation of these units is very simple There are no special unpacking instructions except that care should be taken to handle units gently Like most electronics they are susceptible to ESD Proper ESD tech niques s
9. ce 15 Shipping and Handling Precautions 15 Storing the Unit 15 IOM2802PRO Revision 1 0 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Product Specifications FCC Notice Optical and RF Characteristics Note 1 All specifications are given at 25 C using single mode fiber and the optimum RF input level See Figure 3 Tx Optical Output Power Rx Optical Input Power Optical Loss Range Operating Wavelength Lower Bandwidth Upper Bandwidth Impedance Carrier to Noise Ratio End to End Link Gain O dB Optical Loss 10 dB Optical Loss Composite Triple Beat Composite Second Order Electrical Characteristics Power Supply Voltage Tx Current Draw Rx Current Draw Physical Characteristics Weight Stand alone Tx or Rx Weight 3RU Return Path Rx Dimensions Stand alone Tx or Rx Dimensions 3RU Return Path Rx Min Typ Max 2 0 3 0 4 0 9 0 4 0 0 12 1290 1310 1330 5 350 400 75 See Figure 4 See Figure 1 24 4 63 57 70 65 Min Typ Max 9 205 260 95 150 Min Typ Max 6 0 170 8 0 227 5 75 x 2 95 x 1 143 146 x 75 x 29 5 06 x 1 39 x 12 00 129 x 35 x 305 Units dBm dBm dB nm MHz MHz Ohms dB dB dB dB Units Volts DC mA mA Units OZ Notes 1 2 Notes Notes IOM2802PRO Revision 1 0 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Environmental Characteristics Min Typ Max
10. completed Items Provided The following is a list of items provided with each Model 2802PRO 3RU Rack mount Version Qty Mfr P N Description AR Force Inc 2802P R DUAL XX 10 Channel CATV Dual Receiver Stand alone Version Qiy Mfr P N Description AR Force Inc 2802P T 1310 XX 10 Channel CATV Singlemode Transmitter AR Force Inc 2802P R XX 10 Channel CATV Singlemode Receiver f pe aie Any Any Active Device Receptacle Caps 1 per unit Force Inc PSO95 1 9 Volts 500 mA DC Power Supply with 2 pin Weidmuller Plug IOM2802PRO Revision 1 0 8 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Items Required 3RU Version Qty Mfr P N AR Force Inc 3000CB NN lor2 Force Inc 3000UC NN 1 per PS Any Any lor2 Force Inc 3000UE NN AR Any Any Any Any AR Any Any AR Any Any Items Required Stand alone Version Qty Mfr P N 4 per unit Any Any 1 Any Any AR Any Any Physical Module Placement Description 3RU 19 Rack Chassis 3RU Power Supply Universal AC Three wire Ground IEC Power Cable AC Version 3RU Power Supply 48 Volts DC 14 AWG Solid Copper Wire UL 1061 300V 80 C DC Versi ion Straight Screwdriver Standard EIA 19 Rack 9 125 um Single mode Fiber with Appropriate Optical Con nectors Description 4 40 or 6 32 Panhead Mounting Screws with Lock Washers and Nuts Straight Screwdriver 9 125 um Single mode Fiber Units may be mounted i
11. ct Under Warranty Force will honor the warranty for these products As a result product s should be accepted upon return for rework or repair in accordance with Force s warranty policy Obsolete Product Under Warranty Force will honor the warranty for these products As a result product s should be accepted upon return for rework or repair in accordance with Force s warranty policy Active Out of Warranty Force will accept return of product under this category as long as the sale of the product occurred less than five 5 years prior to the return request The product serial number should aid in determining the age in cases where information is not in the data base Rework or repair will be in accordance with Force s warranty policy and will include an evaluation charge which will be quoted to the customer prior to the return of the product IOM2802PRO Revision 1 0 14 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual The evaluation charge is 20 of the current list price of the product or a minimum of 250 whichever is greater The customer will either need to provide a purchase order number with approved credit or a credit card number before receiving an RMA number Force cannot guarantee its ability to repair or rework the product If costs to repair the product exceed the evaluation charge the customer will be notified of such charges and instruction to proceed with repairs will be indicated either by a P O numb
12. e sig nals 5 The optical input power at the receiver may be too low Assuming that the receiver shows a green light the optical input level may be too low See Figure 3 page 5 Note 5 for the expected CNR versus the channel loading and received optical power 6 Ifall of these steps have been tried and the problem remains consult additional troubleshooting informa tion in next Section or call Force Inc Troubleshooting Common problems include using a transmitter as a receiver and vice versa lack of continuity in the fiber lack of power or reversed power or improper input levels The transmitter is optimized to accept an input level as described in Figure 3 page 5 Larger inputs will introduce nonlinearities or interfere with function and smaller inputs will degrade the carrier to noise ratio If problems persist contact the factory IOM2802PRO Revision 1 0 11 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Problems and Comments Problem Check Comments No optical power out of Tx Check Tx power connection If there are less than 9 Volts between pins J1 1 and J1 2 a higher current power supply is required at least 205 mA If the voltage on pin J1 1 is nega tive with respect to the voltage on pin J1 2 reverse the power supply leads No optical power at the Rx Check power at the Tx If there is power at the Tx verify proper fiber is connected to the Rx If the pr
13. er s sole remedy for defects in material and workmanship IOM2802PRO Revision 1 0 13 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Product Return Policy Customers will be permitted to return products for credit repair or replacement only after receiving authori zation from the Customer Service Manager CSM and only with a valid Return Material Authorization RMA number The criteria determining whether a product is covered under this policy are described below and RMA numbers will be issued only under these guidelines For Return Requests that do not comply with the following criteria the CSM must have approval from the VP Operations or designee prior to issuing an RMA number Products Returned for Credit Non Distributor Customers will be allowed to return product for credit only under the following conditions e Products are current standard Force products as per the price list e Products are in new unused and undamaged condition and are in the original packaging e Products were originally shipped to the customer requesting Return Authorization e Request for return is for a valid reason as determined by Force Inc e Products were shipped to the customer less than 3 months prior to return request e Customer receives proper Return Material Authorization prior to returning the product e Customer pays return freight and insurance if requested by Force Inc Customers will be issued a credit for the
14. er or credit card autho rization Obsolete Product Out of Warranty Force is not obligated to accept requests for product under this category The CSM with prior approval from Operations will be responsible for approving return requests for products falling under this category Receiving an RMA for Returns Customers requesting RMA numbers for any reason will be instructed as to how and where to ship the prod ucts being returned and will be directed to show the RMA number on all external packaging and documenta tion The CSM is responsible for providing any necessary instructions to the customer to ensure proper handling of the retuned material Upon receipt of the product all Force personnel are to process the return as per SP002 Handling of Customer Returns Contact the factory at USA 800 732 5252 or TEL 540 382 0462 to request an RMA Repair Service For equipment repair or technical assistance contact Customer Service 800 732 5252 USA or 540 382 0462 A Returned Material Authorization RMA number must be issued by Customer Service before the return of a failed unit Units should be returned in their original shipping carton if available Always include a complete description of the failure or observed anomalies Shipping and Handling Precautions The units are in general very rugged and can withstand the stresses of most shipping and handling circum stances However the following precautions should be taken
15. horter than 0 5 km As the optical loss increases the CNR will drop by 2 dB for every 1 dB increase in optical loss At the maximum rated optical loss the CNR will be 10 dB less than the values shown in Figure 3 All channel amplitudes must be closely matched for the best performance Drive Level per Channel dBmV Number of Channels Loading Figure 3 Optimum Drive Level per Channel vs Number of Channels Loading Figure 4 illustrates the carrier to noise ratio CNR versus the received optical power and channel loading of the 2802PRO link 1 Channel 3 Channels 55 pecz 6 Channels 10 Channels Video CNR dB 3 Received Optical Power dBm Figure 4 CNR vs Channel Loading and Received Optical Power IOM2802PRO Revision 1 0 5 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual 6 Ten channel loading 7 Humidity is RH non condensing 8 Be sure to compute fiber bandwidth end to end as well as fiber attenuation Bandwidth often gets over looked by system designers who incorrectly assume that fiber has essentially infinite bandwidth 9 The Model 2802PRO transmitter contains a built in true rms RF level meter that allows the optimum RF input level to be quickly and precisely determined The output of the circuit is a multicolored LED When the LED is orange the RF input level is too low and the picture will appear grainy When the LED is green the RF input level falls within the optimum
16. lent unit Exclusions This warranty does not extend to any product that has been damaged due to acts of God accident misuse abuse neglect improper system design or application improper installation improper operation or mainte nance or connection to an improper voltage supply The Force warranty does not cover fuses batteries and lamps Modifications or alterations of Force products including but not limited to installation of non Force equipment or computer programs except as authorized by Force will void this warranty Removal or breaking of the seals on the product will also void the warranty In addition cost of repair by unauthorized persons within the warranty period of the product will not be cov ered by Force Incorporated Such repairs will void the warranty Force Incorporated makes no other representation or warranty of any other kind express or implied with respect to the goods whether as to merchantability fitness for a particular purpose or any other matter Force Incorporated s liability shall not include liability for any special indirect or consequential damages or for any damages arising from or attributable to loss of use loss of data loss of goodwill or loss of anticipated or actual revenue or profit or failure to realize expected savings even if Force Incorporated has been advised of the possibility of such damages This warranty constitutes Force Incorporated s entire liability and the cus tom
17. mitted through the 2802 must fall within a single octave range of frequency i e a 2 to 1 range of frequency For instance if the lowest frequency being used is 50 MHz then no channel may be at 100 MHz or higher See Application Note 123 for a list of television frequency used in North America IOM2802PRO Revision 1 0 4 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual 4 Supply voltage should be 9VDC The units will tolerate small amounts of ripple but this should not exceed 0 5 Volts peak to peak It is critical that the supply voltage never drops below 9 Volts for any part of the waveform Voltages below 9 Volts will cause the internal voltage regulators to lose regulation which will disrupt the operation of the unit and cause unpredictable results Force Inc provides the Model PS095 1 for use with this product 5 All specifications shown are met when the RF input levels complies with the values shown in Figure 3 A smaller RF input level will cause reduced carrier to noise ratio which may produce a snowy picture A larger RF input level will cause increased distortion between channels which may produce irritating inter ference bars or patterns in the picture Figure 3 also shows the typical CNR that can be achieved with the link at minimum optical loss The CNR is specified for a bandwidth of 4 2 MHz At 1310 nm the loss is typically only 0 5 dB km so the listed level of performance could be expected at distances s
18. n any orientation on most flat dry surfaces Secure panhead screws through mounting holes provided at the base of the module If the unit is placed in a location where temperatures may exceed 38 C 100 F a good heat sink should be secured The use of silicone thermal pads is recommended between the module and the plate to maximize heat transfer 3RU Receiver Connections Rx Connector Location Rx Connector Type Rx Connector Function Front Panel F 20 dB RF Test Point Rear of Panel SC APC or FC APC Optical Input for RX 1 and RX 2 Rear of Panel F RF Output for RX 1 and RX 2 Note The FC APC interface uses the wide key standard This means that the units are optimized for use with FC IAPC connectors that have a 2 14 mm wide alignment key Narrow key FC APC connectors 2 02 mm often referred to as JDS compatible may be used but will produce inferior results Standard FC PC connectors have a 2 36 mm wide key and cannot be plugged into either unit Stand alone Unit Connections Tx Connector Number Tx Connector Type Tx Connector Function FC APC Standard SC APC F D5 Optional Optical Output i Pin Function Weidmuller 2 Pin J mating adapter provided Jil Power J1 2 Ground J2 F type RF Analog Input IOM2802PRO Revision 1 0 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual Rx Connector Number Rx Connector Type Rx Co
19. nical Support 1 Product Specifications 3 FCC Notice 3 Optical and RF Characteristics 3 Electrical Characteristics 3 Physical Characteristics 3 Environmental Characteristics 4 Specification Notes 4 Figure 1 End to End Gain vs Optical Loss 4 Figure 2 Bandwidth of a Typical 2802PRO Link 4 Figure 3 Optimum Drive Level per Channel vs Number of Channels Loading 5 Figure 4 CNR vs Channel Loading and Received Optical Power 5 Installation and Operation 7 General Installation Instructions 7 Stand alone Transmitter and Receiver Description 7 Figure 5 Stand alone Transmitter and Receiver Unit De scriptions 7 3RU Return Path Receiver Description 8 Figure 6 3RU Return Path Receiver 8 Inspection 8 Items Provided 8 Items Required 3RU Version 9 Items Required Stand alone Version 9 Physical Module Placement 9 3RU Receiver Connections 9 Stand alone Unit Connections 9 10 Safety Precautions 10 Operating Instructions 10 LED Functions 11 Measuring RF Input Levels 11 Performance Verification 11 Troubleshooting 11 Problems and Comments 12 Cleaning 12 Warranty and Return Policy 13 Warranty 13 Force Obligations 13 Exclusions 13 Product Return Policy 14 Products Returned for Credit Non Distributor 14 Products Returned for Repair or Replacement 14 Active Product Under Warranty 14 Obsolete Product Under Warranty 14 Active Out of Warranty 14 Obsolete Product Out of Warranty 15 Receiving an RMA for Returns 15 Repair Servi
20. nnector Function FC APC Standard SC APC D1 Optional Optical Input druil Pin Function Weidmuller 2 Pin E mating adapter provided 12 1 Power J2 2 Ground J1 F type RF Analog Output Note The FC APC interface uses the wide key standard This means thot the units are optimized for use with FC IAPC connectors that have a 2 14 mm wide alignment key Narrow key FC APC connectors 2 02 mm often referred to as JDS compatible may be used but will produce inferior results Standard FC PC connectors have a 2 36 mm wide key and cannot be plugged into either unit Safety Precautions The optical emission from the units are laser based and may present eye hazards if improperly used As always be careful when working with optical fibers Complete laser safety procedures may be downloaded from http www forceinc com techbull laser safety procedures pdf Fibers can cause painful injury if they penetrate the skin NEVER USE ANY KIND OF OPTICAL INSTRUMENT TO VIEW THE OPTICAL OUTPUT OF THE UNIT Operating Instructions It is very important to provide the proper RF signal level to the 2802PRO transmitter Exceeding the RF input level may destroy the transmitter The transmitter includes a built in RF level indicator that allows the opti mum RF input level to be quickly and positively identified A single multicolored LED is used to indicate the RF input level If the LED is yellow the input level is too low If it is g
21. oper fiber is connected ensure the integrity of the fiber Signal out of Rx is noisy Check optical power at the Rx See Figure 3 page 5 Note 5 for the input signal levels required to operate the units Be sure to ground the case of the Tx and Rx No signal out of Rx Verify the input signal at the Tx See Figure 3 page 5 Note 5 for the required input signal level Check the Rx power connection If there are less than 9 Volts between pins J2 1 and J2 2 a higher current power supply is required at least 95 mA If the voltage on pin J2 1 is nega tive with respect to the voltage on pin J2 2 reverse the power supply leads Signal amplitude out of Rx too large Verify that the Rx output is terminated into 75 Ohms Add 75 Ohms terminating resistor Ver ify that the Tx input is within the specs given in Figure 3 page 5 Note 5 Signal out of Rx is distorted Verify input signal at Tx The Tx input must be within the specs given in Figure 3 page 5 Note 5 A larger signal will cause distortion Verify fiber size Single mode fiber must be used with this product Cleaning If the link needs to be cleaned avoid the use of all solvents and use low pressure clean air to remove loose dirt Use low pressure clean air to clear the connectors of any debris Dirty or scratched connector end faces will greatly reduce the unit s performance Do not try to use fluids or high
22. ptable limits BEFORE the cable is attached to the transmitter Note that the laser can be destroyed by excessive RF even if the transmitter is NOT powered Ideally the RF level should be checked with an instrument such as a spectrum analyzer to verify that the levels are appropriate See Figure 3 page 5 Note 5 for the optimum drive levels If instrumentation is not available to actually measure the RF levels Force recommends adding 40 dB of attenuation at the transmitter input 40 dB of attenuation will adequately protect the unit from the highest RF levels that might be seen in a typical CATV installation Do not attach the RF cable at this time just verify the RF levels and or add the appropriate attenuators at the transmitter input Performance Verification Once steps 1 8 have been successfully completed verify that the picture quality is good If the picture quality is not good there are several likely causes 1 The optical fiber may have large backreflections Use an OTDR to examine the fiber run 2 There may be non APC optical connectors somewhere in the system These cause unacceptable levels of backreflection 3 The RF input spectrum may not be flat It is possible to have a green RF Level LED even if the input spec trum has a large amount of tilt All Force CATV products are designed to operate with a flat input spec trum 4 There may extraneous i e non video signals in the input RE Be sure to filter out all non desirabl
23. reen the input level falls within the opti mum range When the RF input level is too high the LED will be red The level LED also provides a positive indication of unit power Ideally the RF power level will be centered within the green range A state of the art 1310 nm single mode MQW FP laser and PIN detector are used to achieve the performance levels cited This product is recommended for use with single mode fibers only A minimum fiber bandwidth of 500 MHz is required Follow the steps below to begin operating the link 1 Install the links as described in this document 2 Measure the RF level BEFORE making any connections to the transmitter This measurement is described on page 11 3 Clean the optical connectors Download http Avww forceinc com techbull optical connector cleaning pdf for complete instructions 4 Connect the optical fiber to the transmitter and the receiver Be sure that the fiber has continuity and less than the maximum allowable optical loss Also be certain that the fiber is the proper size Force Inc rec ommends that this product only be used with single mode fiber 5 Connect the RF source VCR camcorder cable television etc to the RF analog input on the transmit ter See Figure 3 page 5 Note 5 for RF input level requirements The RF input level requirements vary depending on the number of channels 6 Connect the RF analog output on the receiver to the monitor input The monitor input should present a 75
24. uch as wearing a wrist grounding strap should be observed at all times when handling a unit The units should not be dropped The unit requires no assembly and no adjustments Stand alone Transmitter and Receiver Description lt 5 75 146 05 5 375 136 53 CATV SINGLEMODE TRANSMITTER 13100m etansa ae E B D 1 143 l a03 Rx Left Side View Tx Left Side View Tx or Rx Right Side View A Mounting Holes 4 Places Sized for 4 40 or 6 32 diameter D Power Connector 2 Pin Weidmuller Used to connect the trans screws Used to mount the stand alone modules mitter or receiver to the PS095 1 power supply B Indicator LED Green Orange Red LED On the transmitter this E RF Input Output F Connector RF input to the transmitter RF out gives an indication of RF level On the receiver this gives an indi put from the receiver cation of optical level See page 11 for LED functions C Optical Output Input FC APC or SC APC Optical output from the transmitter Optical input to the receiver Invisible laser radiation emitted from the optical con nector Avoid direct eye contact with the beam Figure 5 Stand alone Transmitter and Receiver Unit Descriptions Dimensions in parentheses are in millimeters IOM2802PRO Revision 1 0 7 Model 2802PRO 10 Ch CATV Singlemode Fiber Optic Link User Manual 3RU Return Path Receiver Description A A A 2802 WecEIVER B OPTICAL LEVEL LLS C
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