Model 2804: Professional Distribution Solution (PDS) 110 Channel
Contents
1. 14 1IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual For all receivers When power is applied and the link is operational the Optical Level LED should light green to indicate the optimum optical input level If the optical input level is too low the LED will be yel low The LED also doubles as a power indicator OPTICAL LASER RADIATION IS PRESENT AT THE OPTICAL FIBER THAT ATTACHES TO THE RECEIVER S OPTICAL CON NECTOR WHEN THE UNITS ARE ACTIVATED AVOID DIRECT EYE EXPOSURE TO THE BEAM 9 The units are now fully operational Verify the proper operation of the link by following the steps in Sec tion page 15 The user may verify a number of performance parameters via the front panel LED display See Figure 2 1 page 12 for details No other user adjustment or attention is required Performance Verification Once the units have been installed 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 inpu2. Frequency Hundreds MHz T 2804T 2804T with with 2807R 2808R Figure 1 In Band Frequency Response of the 2804T and 2808R Link 1IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Figure Figure 2 shows an expanded view of the frequency response of a typical 2804T 2808R link Response dB Frequency MHz 9804T 2804T with with 2807R 2808R Figure 2 Expanded Frequency Response of the 2804T and 2808R Link 3 All optical power levels are average values Output is Class IIIb laser 4 Be sure to compute your fiber bandwidth end to end as well as attenuation The Model 2804 incorporates an optical isolator in the laser package that reduces the effect of optical backreflections on the laser performance However all analog lasers are affected by optical backreflec tions The 2804 can only achieve published performance levels if the fiber between the transmitter and receiver has a maximum optical backreflection of 50 dB Optical backreflection levels above 50 dB will increase the noise floor of the laser i e decrease the carrier to noise ratio worsen both CSO and CTB performance increase passband ripple and dramatically increase cross modulation The result will be a noisy grainy picture with diagonal bars Force Inc recommends that all fiber connections be SC APC type FC APC type or fusion spliced There is some folklore which suggests that the only
3. 75 inch rack mount chassis To ensure the unit does not overheat leave 1RU of space above and below each installed chassis When connecting power to the chassis take care as to not over load the branch circuit supplying power to whatever is already connected Also make sure there are no obstructions in the fan exhaust or inlet paths 12 1IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Measuring RF Input Levels at the Transmitter Excessive RF input to a fiber optic CATV transmitter WILL destroy 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 acceptable limits BEFORE the cable is attached to the transmitter See the Drive Level per Video Carrier top label see Figure 1 7 on the transmit ter for the optimum drive levels and follow the steps below 1 Using a spectrum analyzer determine that the RF level input to the transmitter is within safety bounds The unit is shipped with a 20 dB attenuator on the input to protect against accidental overload on initial hookup An additional 20 dB attenuator may be added for absolute security This attenuator should be removed once RF level
4. SAUA sj uueyg ndul Jo Jaquinn e OL SA Jaded oapl Jed 3497 SANA A w yndjno all channels In all cases set the composite RF input level so that the RF INPUT LEVEL LED is green The RF indicator LED only operates properly for rated channel loading and a flat input spectrum To use level per video carrier For instance with 40 channel loading each video carrier should be about 25 the chart look up the channel loading you will be presenting to the transmitter input and read off the drive dBmV 7 Each transmitter has a label such as the one shown in Figure 7 that gives the RF input levels for the trans mitter The individual carrier levels should closely match each other to ensure consistent performance on 1IOM2804 Revision 5 2 Figure 7 Top Label Used to Determine RF Input for Transmitter 8 The Tx rear panel power module can accept voltage levels from 120 to 240 Vac at 50 to 60 Hz Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual 9 Fuse Rating is 1 25A Slow Blow CAUTION Risk of fire Only use fuses with same type and rating as marked 10 Most parameters are relatively unaffected by varying temperature A moving air environment is recom mended at ambient temperatures above 35 C 11 The CATVLinx VSB AM Fiber Optic Link is optimized for single mode operation only Use on multimode fiber is not recommended even for short distances because of the large amo
5. Section 1 Product Technical Bulletin1 1 1 Product Overview1 1 2 FCC Noticet 1 3 Optical Video Electrical Characteristics2 1 4 Environmental and Physical Characteristics2 1 5 Specification Notes2 Figure 1 1 In Band Frequency Response of the 2804T and 2808R Link2 Figure 1 2 Expanded Frequency Response of the 2804T and 2808R Link3 Figure 1 3 CNR vs Rx Optical Input and Channel Loading 28041 2807R 4 Figure 1 4 Transmitter Level per Channel vs Number of Channels5 Figure 1 5 Transmitter Level Channel vs Log4o Number of Channels 5 Figure 1 6 Response of Model 2804 RF Power Meter6 Figure 1 7 Top Label Used to Determine RF Input for Transmitter6 1 6 Applications7 Figure 1 8 Professional Distribution Solution with Return Path7 1 7 Part Numbers8 Section 2 Installation Instructions9 2 1 General Installation Requirements9 2 2 Items Provided9 2 3 Items Required9 2 4 Inspection10 2 5 Equipment Rack Configuration10 2 6 Measuring RF Input Levels at the Transmitter10 2 7 Connections11 2 8 Front Panel Physical Description12 Figure 2 1 Transmitter Front Panel12 2 9 Rear Panel Physical Description13 Figure 2 2 Transmitter Rear Panel13 2 10 Safety Precautions13 2 10 1 Laser Safety Procedures13 2 11 Shipping and Handling Precautions14 2 12 Storing the Uniti4 Section 3 Operating Instructions15 3 1 Connections and Power up15 3 2 Performance Verificationi6 3 3 User Maintenance17 3 4 Repair Service17 3 5 Cleaning17 3 5
6. critical backreflection is the one closest to the transmitter Our experience does not support that view We find that all backreflections matter regardless of their dis tance from the transmitter 1IOM2804 Revision 5 2 5 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual 5 Figure Figure 3 presents a tremendous amount of performance data for the 2804 link The horizontal axis is the amount of optical light that reaches the receiver It is not the loss between the transmitter and receiver The vertical axis shows the carrier to noise ratio at a given optical input level 5 Ch 62 10 Ch 60 ST capi 24 Ch 40 Ch 58 79 Ch Carrier to Noise Ratio dB a Oo ee a e a 36 AEE EEE 12 11 10 9 8 7 6 5 4 3 2 10 12 3 4 Receiver Optical Input dBm Figure 3 CNR vs Rx Optical Input and Channel Loading 2804T 2807R Typical transmitter output is 10 dBm so a received optical power of 2 dBm corresponds to an optical loss of 8 dB The vertical scale is the carrier to noise CNR ratio Six curves are plotted against these axes The top curve is the typical result when only 5 channels are transmitted through the link It can be seen that very high CNR results and in fact the output is quite usable with receiver optical inputs as low as 12 dBm corresponding to 22 dB of optical loss As the channel loading gets higher the maximum achiev able CNR drops Note that the link CNR is usua
7. 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 18 1IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter 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 number or credit card autho rization Obsolete Product Out of War
8. 1 Optical Connector Cleaning Equipment17 3 5 2 Directions for Optical Connector Cleaning18 3 5 3 Connector Handling18 3 6 Troubleshooting18 3 7 Problems and Comments19 Index21 1IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Product Specifications Optical and Video Characteristics 25 C SM Fiber Note 1 Min Typ Max Units Notes Channel Loading 110 Ch Bandwidth 40 870 MHz 2 Operating Wavelength 1290 1310 1330 nm Optical Output Power P N ends in 06 6 dBm 3 Optical Output Power P N ends in 08 8 dBm 3 Optical Output Power P N ends in 10 10 dBm 3 Optical Output Power P N ends in 12 12 dBm 3 Optical Output Power P N ends in 13 13 dBm 3 Required Fiber Bandwidth 2 000 MHz 4 Input Output Impedance 75 Ohms Side Mode Suppression Ratio SMSR 30 dB Backreflection Tolerance 50 dB Carrier to Noise Ratio CNR See Figure Figure 3 5 Composite Second Order CSO 65 dB Composite Triple Beat CTB 69 dB Input Signal Range per ch See Figures 4 and 5 6 7 Electrical Characteristics Min Typ Max Units Notes Power Supply Voltage 120 240 Vac 8 Power Supply Frequency 50 60 Hz 8 Power Dissipation 25 Watts Fuse Slow Blow 1 25 A 9 Physical Characteristics Min Typ Max Units Notes Weight 5 5 Ibs 2 5 kg Physical Dimensions 19 Wx 1 72 Hx 14 1 D in 483 x 44 x 358 mm 3 1IOM2804 Revision 5 2 Model 2804
9. ARD 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 40 C to 60 C 2 A low humidity environment is preferable for long term storage 3 All connectors should be covered with active device receptacle caps 1IOM2804 Revision 5 2 19
10. Description CATVLinx 110 Ch PDS Transmitter Active Device Receptacle Cap for Optical and RF Connec tors L Bracket Mounting Ears Allows the table top Tx chassis to be adapted to a 19 wide rack Three wire ground AC power cable Description CATVLinx PDS PNS Mini node CATV Receiver CATVLinx PDS PNS CATV Receiver 6 32 Panhead Mounting Screws with Lock Washers and Nuts used to mount receivers Straight Screwdriver EIA standard 19 rack with hardware to install the transmit ter into the rack 10 IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Qty Mfr P N AR Any Any 1 per 2807 Force Inc PS200 1 per 2808 Any Any Front Panel Physical Description AB C DEFGHI Description 9 125 um Single mode Fiber Wall mount Power Supply Model 2807R only Three wire ground AC power cable k 19 00 483 A Mounting Brackets Optional included Adapts the 1RU transmitter chassis for use in a EIA standard 19 wide rack B Handles For easy removal and installation of 1RU chassis with mounting brackets into a 19 wide rack C Key Lock Power Switch Turns the unit on and off preventing acci dential power down D Power Indicator LED Green LED The LED is on when the unit is re ceiving AC power and off when there is no power to the unit E Start Up LED Yellow LED Lit for the first 10 15 seconds after pow er up During this per
11. G OPTICAL BROADCAST SYSTEMS Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter Installation Guide and User Manual IOM2804 Revision 5 2 November 2005 Warning The optical emissions from the chassis and connected optical fiber are laser based and may present eye haz ards Follow all safety precautions CNED e Invisible laser radiation INVISIBLE LASER RADIATION emitted from this connector AVOID DIRECT EXPOSURE TO BEAM Indium Gallium Arsenide Phosphide 20 mW maximum power output Class Illb 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 to 5 00 pm EST Fela setae 540 381 0392 sales forceinc com By Fax By Email 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 2005 by Force Inc Force reserves the right to make changes to the product described in this document in the interest of product improvement Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Contents Prefaceii
12. Output DB9 Connector Transmitter remote status monitor ing connection See Section Figure for pin connections E AC Power Input and Fuse Holder Connects to primary AC power via CAUTION Connect only to a three wire grounded outlet Do not defeat the purpose of this ground The fuse type is 1 25A Slow Blow F Unit Serial Number The unit serial number is a code that identifies the product s warranty start date See page iii for Force s standard war ranty Figure 9 Transmitter Rear Panel 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 damages 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 completed Equipment Rack Configuration Carefully unpack the chassis and install it in your earth grounded equipment rack Make sure to load the heaviest equipment near the bottom of the rack and the lightest equipment at the top of the rack The surface of the equipment rack that mates to the chassis mounting ears should be conductive The unit should be located in an area that provides adequate lighting and is relatively free from dust The units are each housed in a single EIA standard 1RU 1
13. Professional Distribution Solution PDS 110 Channel Transmitter User Manual Environmental Characteristics Min Typ Max Units Notes Operating Temperature Range 0 45 C 10 Storage Temperature Range 20 70 C Humidity RH non condensing 0 90 Specification Notes 1 2 The Model 2804 has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruc tions in this manual may cause harmful interference to radio communications Operation of this equip ment in a residential area is likely to cause harmful interference in which case the user must correct the interference at the their own expense Compliance with applicable regulations depends on the use of shielded I O cables The user is responsible for procuring the appropriate cables Figure Figure 1 shows the typical frequency response of a 2804 link over the specified frequency range The gain flatness is typically 1 0 dB over this range The flatness is typically less than 0 1 dB over a standard 6 MHz channel bandwidth See Application Note AN123 for additional information on North American Television Frequencies Response dB
14. T condition the laser will be turned off The unit must cool and power must be cycled to restore operation Laser Stable LED Blue LED When lit the unit is operating normally LED Readout Blue 7 Segment The control knob sets the transmit ter LED readout display to one of four parameters RF Input Levels in dBmvV Laser Cooler Current in Amps Laser current in mA and Laser Temperature in degrees Farenheit The LED display then shows transmitter parameters RF Test Point Allows the user to test the RF signal level using an RF test meter Figure 8 Transmitter Front Panel Dimensions in parentheses are in millimeters IOM2804 Revision 5 2 11 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Rear Panel Physical Description CATV Linx ieee PART NO 2804TK SCSP 12 RZ TSR ewig 1310 nm ETTET 310023 A Heat Sink Dissipates excess heat from the transmitter B RF Input F Connector RF signal input into the transmitter Warning label below advises not to exceed the RF input level or the transmitter may be destroyed C Optical Output FC APC or SC APC Optical output from the transmit ter A dust cover should be placed over the connector when not in use OPTICAL LASER RADIATION IS PRESENT AT THE TRANSMIT TER S CONNECTOR WHEN THE UNIT IS TURNED ON AVOID DIRECT EYE EXPOSURE TO THE INVISIBLE BEAM 17 00 431 80 D Status
15. accessed via pin 5 of the 9 pin D sub connector on the rear of the transmitter 1IOM2804 Revision 5 2 7 User Manual Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter uaes6 suin qa au nun sdajs gp z Aq sjang J4 eSeasoU MOJJ SUN 4 U83416 10 MO aA suan G37 84 ipun Indu 44 94 99uuo991 pue sdas gp 9 Aq sjang 4H aseeioeg Ajayelpawiu ndu 44 ay Pauuovss q yy 00 S 343 ndu J4 y pad s G37 eu J U39146 suin G37 y yun sdajs gp Z Ul S 19U MO 00 S BAB AH OU MOI 9A S G37 SY J 12A9 A4 94440 uolTeolpul eaiisod e sanl6 jeued yuoy ay UO G31 TAA LNANI 44 24L yeya y UO UMOYS San eA y P9B9X9 LON OG Wgp 10u jauUeYyo Jad syiun AWgp UI SI Peya y ey OJON SJOUUeYO OL O WOI Bulpeo jauUeYO JO jana INdul 4y eUIWWOU 3y sanb noqe yeyo SUL JEUILUOU ale S949 JH 29u0 Joyenuaye siy BAOWAY dnyooy jenu UO peouano jeJUSpINNe ysureBe Joo o1d 0 yndul ay uo 1oyenuaye gp oz e YIM Sdiys yun SUL spunog Ajayes UIU IM SI ndul 349 4Y HUN y ey UIWUA Ep doid slejap 10 AOQEL LYI 4alUeD O PIA Jad JaAa7 AALIG Y pue 8ZLNV WOI npoid ay aag jpa amogd jou SI Jayyjwisued 8Y J UBAZ YAISVT JHL AOULSA TIIM LNdNI 44 AAISSIOXA iIONINUVM sjeuueug ndu Jo Jequinn e oL OLL OOL 06 08 OZ 09 OS OF OE OZ OL Total RF Input Power dBmV Figure 6 Response of Model 2804 RF Power Meter HO AWgp JelueD oapl Jed 8487
16. ark Dark Dark Dark Apply Power Green Yellow Note 1 Red Note 2 Dark 5 10 Sec Green Yellow Note 1 Green Note 2 Dark 10 15 Sec Green Dark Note 1 Green Note 2 Blue Note 1 At any time the RF input will be yellow if the RF input level is too low green if it is within the nominal RF input band and red if the RF input is too high Note 2 At any time if the box temperature is too high the OVERHEAT LED will light This will cause the LASER STA BLE LED to go dark and the laser will power down It will be necessary to cool the box and cycle power to restore normal operation If the RF Input Level LED is red this means the RF level is too high DISCONNECT THE RF INPUT IMMEDIATELY Add the supplied RF attenuator then reconnect the RF input and observe the LED color Adjust the RF input until the RF Input Level LED is green indicating the optimum RF input level OPTICAL LASER RADIATION IS PRESENT AT THE OPTICAL CONNECTOR WHEN THE UNIT IS ACTIVATED AVOID DIRECT EYE EXPOSURE TO THE BEAM Connect power supply to the receiver For Model 2807 The power supply must be from 12 to 16 Volts DC It is critical that the supply voltage never drops below 12 Volts If the voltage drops below 12 Volts the link may not operate Force Inc recommends the Model PS200 wall mount power supply for use with the Model 2807 receiver For Model 2808 The Model 2808 receiver uses an integral AC power supply which uses a standard 3 wire ground AC power cord
17. d 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 tomer s sole remedy for defects in material and workmanship 17 1IOM2804 Revision 5 2 Model 2804 Prof
18. e transmitter It is imperative that backreflections be controlled to very low levels Pin Function 5 V Power 2 RF Level Status 9 Pin D Sub 3 Laser Status STATUS OUTPUT A TEC Cooler Status Status Output T2345 o previ O 5 RF Power Meter sti 6 Ground 7 Ground 8 Ground 9 Ground Power Accepts a T IEC power Power ings Note The FC APC interface uses the wide key standard This means that the units are optimized for use with FC APC 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 1IOM2804 Revision 5 2 13 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Safety Precautions The optical emission from the units are laser based and present eye hazards if improperly used Never use any kind of optical instrument to view the optical output of the unit Complete laser safety procedures may be downloaded at http www forceinc com techbull laser safety procedures pdf Operating Instructions 1 2 3 4 5 6 7 8 Install the links as described on page 10 of this document Measure the RF level BEFORE making any connections to the transmitter This measurement is described in Section page 13 Clean the optical connectors Complete optical con
19. essional Distribution Solution PDS 110 Channel Transmitter 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 original selling price of the product less a 20 restocking charge after verification t
20. f the Cooler Status LED has also turned red the TEC cooler has failed and the laser is in danger of overheating Remove power from the unit immediately No optical power out of Tx If the Tx Laser LED is red but the Cooler Status LED is green try turn ing the transmitter off and back on The Laser and Cooler Status LEDs should light red within the first ten sec onds of unit initialization and then turn green If either of these LEDs remains red contact Force Inc for additional instructions If there is power at the Tx verify proper No optical power at the Rx Check power at the Tx fiber is connected to the Rx and ensure the integrity of the fiber 1IOM2804 Revision 5 2 15 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual Problem Check Comments Low optical power at the Rx Check optical output power at the Tx If there is optical power out of the Tx verify that all optical connections are APC type Also verify the integrity of the fiber No signal out of Rx Optical Level indicator LED is either yellow red or unlit Verify the input signal at the Tx The Tx RF Input Level LED should be green If the LED is either red or yellow the signal input has fallen outside of the 1 5 dB range If the Tx RF Input Level LED is green the receiver may be in need of repairs Contact the fac
21. hat 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 Product Under Warranty Force will honor the warranty for these products As a result product
22. iod the laser is not powered giving the laser cooler circuit time to stabilize F RF Input Level LED Tri colored Green Yellow Red LED This LED in dicates the RF signal input level into the transmitter The RF input in dicator is green when the RF signal input is within 1 5 dB of the optimum input level When the signal input falls below the optimum 1 5 dB range the LED becomes yellow When the signal input rises above the optimum range the LED turns red See the warning label DO NOT EXCEED THE RECOMMENDED RF INPUT LEVEL EXCESSIVE LEVELS OF RF INPUT WILL DESTROY THE TRANS MITTER NOTE Normally this LED will be red or change from red to green in the first ten seconds after power has been applied to the transmitter If the LED turns red at any time other than in the first ten seconds of operation the unit should be turned off IMMEDIATELY to avoid laser damage on top of the unit Figure 1 7 page 6 for instructions on acheiving the recommended RF input level G Cooler Status LED Bi colored Green Red LED When green this LED indicates that the laser cooler TEC is functioning normally and the laser temperature is stable H A Overheat Status LED Red LED Lights red to indicate operation above normal operating temperature range See Optical Video Elec trical Characteristics 25 C SM Fiber Note 12 page 2 for nor mal operating temperatures or contact factory When the unit detects an OVERHEA
23. lly specified for a received optical power of 3 dBm or more Thus a 2804TK SCAP 12 optical transmitter with an optical output of 12 dBm will provide optimal performance with up to 15 dB of optical loss at full channel loading If lower channel load ing is used then the link can operate at higher optical losses and still provide exceptional CNR 6 The recommended RF input level is shown in Figures 4 and 5 Exceeding the recommended RF input level may instantaneously destroy the transmitter Both figures show the same information the transmitter level per channel versus the number of channels being transmitted however in Figure Figure 5 the horizontal scale is a logarithmic scale This shows that the underlying relationship is linear if plotted against the logarithm of the number of channels 6 IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter User Manual M o Q w ow ao O N P O Drive Level per Video Carrier dABmV N o VALET SY Number of Channels Figure 4 Transmitter Level per Channel vs Number of Channels Drive Level per Video Carrier dBmV 00 02 04 06 08 10 12 14 16 18 20 2 2 LOG Number of Channels Figure 5 Transmitter Level Channel vs Logo Number of Channels Figure Figure 6 shows the response of the Model 2804 transmitter s integral RF power meter This meter is
24. nector cleaning instructions may be downloaded from http www forceinc com an htm Connect the optical fiber to the transmitter and the receiver see receiver IOM 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 This product can only be used with single mode fiber The input power to the Rx must be less than 4 5 dBm The units will not work back to back The optical input level to the Rx can be ascertained by checking the color of the Optical Level indicator LED on the Rx Red LED Too much optical power Green LED Correct optical power level Yellow LED Not enough optical power Connect the RF source VCR camcorder cable television etc to the RF input on the transmitter Connect the RF output on the receiver to the monitor input The monitor input should present a 75 Ohm impedance Connect the AC power cord to the back of the transmitter The 2804T has the most complex startup sequence of the Force CATV line Because the laser is thermometrically cooled and is a high performance item the startup and stabilization sequence is 10 15 seconds long The front panel of the 2804T has six LED indicators One is green only one is yellow only one is red only one is blue only and the remaining two are tri color LEDs The normal startup sequence is as follows Action Power LED Start Up RF Input Cooler Status Overheat Laser Stable Unit Off Dark Dark D
25. ranty 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 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 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 HAZ
26. s are verified to be nominal 2 The Drive Level per Video Carrier chart on top of the transmitter gives the nominal RF input level for channel loading from 1 to 110 channels Note that the chart is in dBmV units per channel not dBm DO NOT exceed the values shown on the chart 3 The RF Input Level LED on the front panel gives a positive indication of the RF level If the LED is yel low the RF level is too low Increase in 2 dB steps until the LED turns green If the LED is red the RF input level is too high Disconnect the RF input immediately Decrease RF levels by 6 dB steps and recon nect the RF input until the LED turns yellow or green If it turns yellow increase RF levels by 2 dB steps until the LED turns green Ideally the RF level should be checked with an instrument such as a spectrum analyzer to verify that the levels are appropriate If instrumentation is not available to actually measure the RF levels Force recommends add ing 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 Connections Connector Name Connector Type Connector Function RF Input F Type RF input to the transmitter Optical Output Bar Optical output from th
27. t spec trum 4 There may be extraneous i e non video signals in the input RF Be sure to filter out all non desirable signals 5 The optical input power at the receiver may be too low In this case the receiver optical status LED will be yellow See Figure 1 3 for the expected CNR versus the channel loading and received optical power Troubleshooting Common problems include lack of continuity in the optical fiber lack of power or reversed power or improper input levels The units are designed to work with a 75 Ohm system A number of indicator LEDs may assist in troubleshooting These allow the user to quickly assess the nature of any major unit malfunctions If problems persist consult the Force Inc reference materials listed below or contact the factory Problems and Comments Problem Check Comments Verify that the AC power cord is firmly attached to the back of the transmitter and verify the integrity of the power cord Be sure that the primary power source has not been inadvertently turned off and that no fuses have blown in the unit or at the power source Plug in the power cord If no AC power is reaching the unit the Power LED on the transmitter will be off Check Tx power connection If the unit is receiving AC power Power LED is green check the Laser LED If this is red check the Cooler Status LED If the Cooler Sta tus LED is green the problem may be in the laser I
28. tory for additional instructions Signal out of Rx is distorted Verify input signal at Tx The Tx RF Input Level LED should be green A larger signal will cause distortion and may destroy the transmitter If the RF level is too high the LED will be red Adjust the input level until the LED turns green Verify fiber size Use single mode fiber only 16 1IOM2804 Revision 5 2 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter 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 equivalent unit Exclusions This warranty does not extend to any product that has been damaged due to acts of Go
29. unt of modal noise that could result IOM2804 Revision 5 2 9 Model 2804 Professional Distribution Solution PDS 110 Channel Transmitter 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 Fiber optic links are sensitive electronics devices that should be han dled with care Like most electronics they are susceptible to ESD Proper ESD techniques such as wearing a wrist grounding strap should be observed at all times when handling a unit The units should not be dropped No assembly is required Do not install the equipment near sources of excessive heat such as furnace outlets or above heat producing units such as large power supplies and tube type equipment Observe temperature and relative humidity requirements specified in Section page 4 Potentially hazardous uninsulated voltages exist beneath the top panel Items Provided The following is a list of items provided with each Model 2804 PDS Fiber Optic Video Transmitter Qty AR 1 per connec tor 2 per unit 1 per unit Items Required Qty AR AR A per unit AR Mfr Force Inc Any Force Inc Any Mfr Force Inc Force Inc Any Any Any P N 2804TX SCXX XX Any 2804 342 2 Any P N 2807RX SFXX 2808RX SFXX Any Any Any
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