Rover RLT-1550 D10 User manual

A STEP AHEAD IN DIGITAL TELEVISION
Product made in Italy by Rover Broadcast.com
• Theultrawideband,47-2.700MHz,optical,laser
transmitter,Rover“RLT”series,equipsahigh
performance,isolatedandthermally-stabilized,DFB
laserwithextremesuperiorlinearity,designedfor
highchannelloading,analog/digitalCATV
andSATsignals.
• The“RLT”seriesoperatesata1550nmwavelength,
accordingtoITU-GRID,theunitisdesignedfor
advanced,singlemode,optical,brenetworks,
withDWDMITU-grid(DenseWavelengthDivision
Multiplex),orCWDMgrid(CoarseWavelength
DivisionMultiplex).
• Finetuning(±100GHz)availableforDWDMversion,
toenableonechannelreconguration.
• TheunitemployssuperiorCSO&SBSpre-correction,
reducinglaserandberdispersioneects.
• RLTSeriesLaserTransmittersincorporatea
comprehensivealarmstatusmonitoringsystemof
alllaseroperatingparameterssuchas:Dclaserbias
current,laseroutputpower,OMI,AGCstatus,etc.
TheUSBandLANportsprovideaccesstothe
completeoperatingparametercongurationandto
thealarmmonitoring.
R LT–1550 d10
47-2.700 MHz OPTICAL DISTRIBUTION EXAMPLE
DWDMHighPower,UltraWideBandCATV&SAT47-2.700MHzLaserOpticalTransmitter,
withpre-correction,LANremotecontrolandalarms
ROVER LASER TX
mod. RLT-1550 D10
47-2.700 MHz
FIBER
NODE
OPTICAL
SPLITTER
EDFA
OPTICAL
AMPLIFIER
20 Km
Fiber
30 Km
Fiber
COAX COAX
COAX
H.E.

Product made in Italy by Rover Broadcast.com
BLOCK DIAGRAM
MAIN FEATURES
• LownoisehighlinearityDFBlaserforexcellentRIN
• Highstabilitythermoelectriclasercooler(DWDM
version)
• CATVinput47-870MHz(oropt.47-1.002)foranalog
TVanddigitalQAMsignals
• TwoseparateCATVinputs,forstandardleveland
highlevelsignals
• SATinput950-2.700MHzfordigitalSAT
transponders
• Inputlevelsignaltestpointonfrontpanel
• Laserdriverleveltestpoint(forOMImeasurement),
onfrontpanel
• ITU-Gridwavelengthnetuning+/-100GHz,
availableforDWDMversion,toenableoneoptical
channelreconguration
• Laseroutputpoweravailable,from+4to+10dBm
• AutomaticchannelsloadcontrolforstableOMI
• Allparametersandpre-corrections,adjustablevia
USB/LANport:outputlaserpower,wavelength
netuning,slope,gain(AGC),OMI,SBS,CSO
predistorsion,chirp.
• USBandLAN-portforlocal&remotecontrol
interface
• SC/APClaseroutputconnector
• Laseroutputconnectoravailableonfront,
orrearpanel
• Built-in2or4wayopticalsplitter,opt.
• RedundancyPSU:2x230Vacopt.
or1x230Vac+1x48Vdcopt.
• Slim,1Unit,19”Rack
2
SATinput
950-2.700MHz
CATVinput
47-870MHz
HILevelCATVinput
47-870MHz
1T.P.CATVinputlevel
-20dB
2T.P.CATV
laserdrivelevel
SMLaser
output

Product made in Italy by Rover Broadcast.com
TECHNICAL SPECIFICATIONS
CAT V & SAT
CATVfrequencyrange 47-870MHz(opt.30-1.000noSAT)or(opt.5-1.000MHzTVonlyforquantityorders,noSAT)
SATfrequencyrange 950-2.700MHz
RFconnectors 75ohmtype“F”
RFReturnLoss TV=>16dB
SAT=>12dB
TypicallevelforCATVmaininput 80dbuV/CHtyp.(72minimum)
TypicallevelforhighlevelCATVinput 100dbuV/CHtyp.(terminatewith75Ωloadifnotused)
NominallevelforSATinput 92dbuV/Trasp.(90minimum),(terminatewith75Ωloadifnotused)
Testpoint1mainCATVinput inputlevel-20dB
Testpoint2laserdrivelevel 80dbuV/5%OMI(relatedtoch.load)
Gainmode CATV:AGC(orManual,notrecommended)
SAT:Manual
GainadjustmentrangeCATV manual+11/-11dB,AGC30dBMax
SlopeadjustmentrangeCATV -3/+15dB
LASER
DWDM version CWDM version
Lasertype DFBCooledbuttery DFBuncooledcoaxial
Opticalwavelength ITUgrid100GHz,channels20to60
available(1.530to1.560nmapprox) 1.550+/-4nm
Powerstability +/-0.5dB +/-1dB
Opticalpoweradjustment 0to-3dB
Wavelengthnetuning -100to+100GHz,50GHzsteps
RIN -155dB/Hzworstcase -150dB/Hzworstcase
Opticalinsulation 30dBmin 30dBmin
Opticalreturnloss >45dB >40dB
PERIFERALS
LAN/ETHERNET10/100port HTMLbrowserforremotesettingsandmonitoring
USBport Forlocalsettings,monitoringandSWup-grades
POWER SUPPLIES
Mainpowersupply 230Vac50Hz
Redundancypowersupplyoptional 48Vdcor2nd230Vac
Powerconsumption <20W
MECHANICAL
Case Slim,19”rack,oneunit,
Weight 5kg
SAFETy, EMC, INSTALLATION ENVIRONMENT
Safety EN50083-1andEN60950
Seeyellowlabelontheequipment.
LaserSafety
Class1Macc.IEC60825-1(eyesafefornormalviewing).
Duringnormaloperationsthelaserbeamisconnedwithinopticalber.Optical
transmitterisintendedtoworkONLYconnectedtotheproperopticalnetwork
Installationenvironment Temperaturerange:–5°/+45°
AccordingtoETS300019-1-3Class3,1ControlledTemp.Loc.
Relativehumidity 90%(95max)
EMC EN50083-2
3

Product made in Italy by Rover Broadcast.com
Channelallocationplan,numberof
channels:Cenelec42,allch.FLAT
*Channelallocationplan,numberofchannels:
77AnalogNTSC+75DigitalQAMat–6dB
level,allch.FLAT
OMI(1.550nm)(DWDMVersion) 4,1%(1)
---%(2)
3,3%(1)
---%(2)
(CWDMVersion) ---%(1) ---%(1)
CNR(1550nm)(DWDMVersion) 53dB(1)
51,5dB(2)
52dB(1)
51dB(2)
(CWDMVersion) 51(1) 50,5(1)
CSO(1550nm)(DWDMVersion) >60dB(2) >60dB(2)
(CWDMVersion) >58dB(2) >58dB(2)
CTB(1550nm)(DWDMVersion) >62dB(2) >62,5dB(2)
(CWDMVersion) >64dB(2) >64dB(2)
CXM(1550nm)(DWDMVersion) >58dB(2) >57dB(2)
(CWDMVersion) >55dB(2) >55dB(2)
*Allch.FLAT,(analogchannelsbelow550MHz),(digitalchannelsabove550MHz)digitalQAMchannels–6dBlevel
LINKTYPE:
1)Linktype1=tx+0kmber+opticalattenuator+RX
2)Linktype2=tx+20kmberG652+opticalattenuator+RX
RX:receivedpower=0dBm,noisecurrent=7pA/√Hz
SAFETy
FULL LOAD CATV NETWORK PERFORMANCE
4
INVISIBLE LASER RADIATION, DO NOT STARE
INTO BEAM OR VIEW DIRECTLY WITH OPTICAL
INSTRUMENTS CLASS 1M LASER PRODUCT.
MAXIMUM OUTPUT POWER: 145.0 mW,
WAVELENGTH: 1550 nm IEC 60825-1:2007
(EN 60825-1:2007, DIN EN 60825:2008-05).
THE EqUIPMENT MAY ONLY BE INSTALLED BY
qUALIFIED PERSONNEL, WHO HAVE RECEIVED
THE NECESSARY TRAINING IN HANDLING OPTICAL
AND ELECTRICAL EqUIPMENT AND HAVE BEEN
INSTRUCTED IN LASER SAFETY.
Laserequipmentinstallation,operationandmaintenancemustonly
becarriedoutbypeoplewhohavereceivedadequatetraininginlaser
safety.
Opticaltransmittersandampliersemitopticalpowerintheinvisible
infra–redspectrumrange.Undernormaloperatingconditions,the
opticalpoweristransferredinthebersandisnotaccessible.
Eachopticaltransmitterandeachopticalamplierisassignedtoa
laserclassaccordingtoIEC60825–2andahazardlevelaccordingtoIEC
60825–2.
Thehazardlevelisbasedonradiationthatcouldbecomeaccessible
underreasonableforeseeablecircumstances,e.g.disconnectedber
connector,bercablebreak.
Bothlevelsaredocumentedintheaccordingoperatingmanualofthe
deviceandwithalasersafetylabelonthedevice.
Thedevicemaybeintegratedinanopticalbercommunicationsystem
(OFCS)complyingwithIEC60825-2.
ForsubsequentaccessiblelocationswithintheOFCS,themanufacturer
oftheOFCSisobligedtoassignappropriatehazardlevelsandtoinstall
applicablelasersafetymeasuresaccordingtoIEC60825-2.
NOTICE
WARNING
!

Product made in Italy by Rover Broadcast.com
FRONT VIEW
INTERNAL VIEW
11
22
1010
33
99
44
88
55
66
77
1. Hotswapfan
2. LEDLaserPWRstatusandalarm
3. USBport
4. MainLASEROUT.
ATTENTION:Laserradiation,donotviewdirectlywith
opticalintruments,class1Mlaserproduct
5. 1stTestPointmainCATVlevel:
47-870MHzat-20dB
6. 2ndTestPointlaserdrivelevel:
80dBµV,47-870MHz5%OMI+2∆Opt.Pwr
7. Hotswapfan
8. LEDmainCATVINstatusandalarm
9. LEDlasertempstatusandalarm
10.LEDAC/DCmainsstatusandalarm
5
HOT
SWAP
FAN
HOT
SWAP
FAN
AC&
DC48V
PSU
BOARD
MICROCONTROLLER
BOARD
LASER & RF BOARD
STATUS LED
USB
TEST
POINT
LASER
OUT
MAINS PSU SWITCH
LAN
CATV & SAT
INPUT
OPTIONAL REAR
LASER OUTPUT
N
X
P
N
X
P

Product made in Italy by Rover Broadcast.com
REAR VIEW WITH 2 x 230 Vac P.S.U.
REAR VIEW WITH 1 - 230 Vac and 1 - 48 Vdc P.S.U.
11
22
33
44
99
55
1111
66
1212
77
1010
88
1313
11
22
33
44
99
55
1111
66
1212
77
1010
88
1313
1. Grounding
2. OptionalopticOUT4
3. OptionalopticOUT3
4. OptionalopticOUT2
5. OptionalmainopticOUT1
6. MainCATVIN
7. HighlevelCATVIN
8. MainSATIN
9. LANmanagement
10.P.S.U.B-Switch
11.P.S.U.DC48VINPUTopt.
12.P.S.U.A-Switch
13.ACMAINS&FUSE-A
Fusevalue230=2.5A
Fusevalue110=3.15A
14.SerialN.andconguration
label
15.OpticalCH.N.label
1. Grounding
2. OptionalrearLaserOUT4
3. OptionalrearLaserOUT3
4. OptionalrearLaserOUT2
5. OptionalmainrearLaserOUT1
6. MainCATVIN:
47-870MHz80dBµVtyp.
7. HighlevelCATVIN:
47-870MHz100dBµVtyp.
8. MainSATIN:
950-2.700MHz90dBµVMAX+2
9. LANmanagement
10.P.S.U.B-Switch
11.P.S.U.A-Switch
12.ACmains&Fuse-B
13.ACmains&Fuse-Aopt.
Fusevalue230V=2.5A
Fusevalue110V=3.15A
14.SerialN.andconguration
label
15.OpticalCH.N.label
-0
1414
1414
1515
1515
6

Product made in Italy by Rover Broadcast.com
USB LOCAL MONITORING, SETTINGS & UP-GRADES
LAN REMOTE CONTROL
WEB CONNECTIVITy
7
HTML browser for
monitoring & settings
Local monitoring
& settings
USB
Ethernet
10/100
Optional
NMS Server
ROVER LASER TX
mod. RLT-1550 D10
LAN / WAN
TCP / IP

V. F 2-10-14
Product made in Italy by Rover Broadcast.com
OPTIONS
ITEM DESCRIPTION CODE DEFINITION
P.S.U. REDUNDANCY Second230VacPSU(MaxN.2AC) AC
Second48VdcPSU(MaxN.1DC) DC
OPTICAL SPLITTER 2waybuilt-inopticalsplitter 2
4waybuilt-inopticalsplitter 4
LASER CLASS CooledultrahighlinearitybutteryLASER D
UncooledcoaxialLASER C
LASER
OUTPUT
POWER
4dBm 4
6dBm 6
7dBm 7
8dBm 8
9dBm 9
10dBm 10
CATV/SAT INPUT
FREqUENCY RANGE
47-870MHzCATVINPUTand950-2.700MHzSATINPUT S
30-1.000MHz(noSAT-IN) 30
5-1.000MHz(onlyforquantityorders,noSATIN) 5
ORDERING CODE DEFINITION
ORDERING MODEL / CODE EXAMPLE
MODEL / CODE DESCRIPTION APPLICATION
RLT1550-D-10-34-F-1-DC-S
DWDMLasertransmitterwithcooledultrahighlinearity
LASER,10dBmpower,ITU34ch.,frontpanelLASERout,
1LASERout,opt.redundancy48VdcPSU,
CATV&SAT47-870/950-2.700MHzinputfrequencyrange
CATV&SAT
UPTO40OPTICALCHAN.
RLT1550-C-9-XX-F-1-XX-S
CWDMLasertransmitterwithun-cooledLASER,9dBm
power,frontpanelLASERout,1LASERout,
CATV&SAT47-870/950-2.700MHzinputfrequencyrange
CATV&SAT
UPTO2OPTICALCHAN.
RLT SERIES
ROVERLaser
Transmitter
WAVELENGTH
RANGE
LASER CLASS
D=cooledDWDMbuttery
C=un-cooledCWDMcoaxial
OPTICAL CH. N.
34=channel34,
1550.12nm
AccordingtoITU
GridDWDMonly
LASER OUTPUT
POSITION
F=Frontpanel
R=Rearpanel
NUMBER OF
LASER OUTPUTS
1=N.1
2=N.2opt.
4=N.4opt.
CATV/SAT INPUT
FREqUENCY RANGE
S=48-870/950-2.700MHz
30=30-1.000MHz(noSAT)
5=5-1.000MHz(onlyfor
quantityorders,noSAT)
LASER OUTPUT POWER
10=10dBm
P.S.U.
redundancy
DC=48Vopt.
AC=230Vopt.
RLT-1550-D-10-34-F-1-DC-S
RO.VE.R.LaboratoriesS.p.A.•ViaParini,2•25019Sirmione(BS)ItalyTel.+39.030.91981•[e-mail]•www.roverbroadcast.com

Operatingmanual
Rev.1.0RLT‐1550D101
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RLT-1550 D10
High power, Ultra Wide Band CATV & SAT 47-2.700 MHz
Laser Optical Transmitter
pre-correction, LAN remote controll and allarms.
OperatingManual

Operatingmanual
Rev.1.0RLT‐1550D102



TABLEOFCONTENT

1Documentversion.................................................................2
2Safety ...................................................................................3
2.1SAFETY INSTRUCTIONS ................................................................................................. 3
2.2CLASS 1M PRODUCT....................................................................................................... 3
2.3HAZARD LEVEL 1M......................................................................................................... 4
2.4LASER SAFETY INSTRUCTIONS .................................................................................... 4
3Generaldescription ..............................................................5
3.1ORDERING CODE........................................................................................................... 13
3.2INTRODUCTION................................................................................................................ 5
3.3VIEWS of RLT-1550 D10................................................................................................. 5
3.4INSTALLING AND STARTING RLT-1550 D10................................................................. 8
4TECHNICALSPECIFICATION ...................................................8
4.1MAIN FEATURES.............................................................................................................. 8
4.2INPUT CATV & SAT ........................................................................................................ 11
4.3LASER SPECIFICATION................................................................................................. 11
4.4POWER SUPPLY............................................................................................................. 12
4.5SAFETY & ENVIRONMENT ............................................................................................ 12
4.6CATV NETWORK PERFORMANCE............................................................................... 12
4.7BLOCK DIAGRAM WEB CONNECTIVITY...................................................................... 13


1DOCUMENTVERSION

Revisiondatanote
1.014.10.2014Startversion

Operatingmanual
Rev.1.0RLT‐1550D103
2SAFETY
2.1 SAFETYINSTRUCTIONS
Readallinstructioncompletelybeforeputtingintooperationthesystemforthefirst
timeandforanysubsequentoperation.
Thedevicewillbehandledbypersonnelwhohave
beentrainedtoworkwithopticalandelectrical
equipmentandhavereceivedstatementsthat
complywithlasersafety.


Allworkshouldbecarriedoutaccordingtotheprescribedsequence
Wrongoperationscanseriouslyaffectthehealthofpeopleorcause
damagetothedevices



2.2 CLASS1MPRODUCT
ThedeviceclassisclassifiedaccordingtotheinternationalstandardIEC60825‐
1:2007;EuropeanVersionEN60825‐1:2007andGermanVersionDINEN
60825:2008‐05).

 
Class1M

Thelaserradiationisemittedintheinvisibleinfra–redspectrum
range.Itispotentiallyhazardouswhenviewedusinganoptical
instrument
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

Operatingmanual
Rev.1.0RLT‐1550D104
2.3 HAZARDLEVEL1M
ThedevicemaybeintegratedinanOpticalFiberCommunicationSystem
(OFCS)complyingwithIEC60825‐2.
Thestandardrequirestheassessmentofrisklevelsforlocationswithrestrictedor
controlaccessinaccordancewithIEC60825‐1.
IfinstalledinanOCFSthedeviceopticaloutputport(s)(fiberconnector(s))are
assignedtothe
HazardLevel1M

TheOFCSmanufacturerisobligedtoassignappropriatehazardlevelsandtoinstall
applicablelasersafetymeasuresaccordingtoIEC60825‐2.

Thelaserradiationispotentiallyhazardouswhenviewedusingan
opticalinstrument.

2.4 LASERSAFETYINSTRUCTIONS
Disconnectthedeviceorputitintoastateoflowpowerbeforeanymaintenance
andinstallationperforming
– Donotlookdirectlyintothelightbeamanddonotusemagnifyingglasses,
microscopesandsimilardevices(tobeusedatadistancegreaterthan100
mmfromthelightsource).
– Donotpointfiberendsatotherpeople.
– Checkopticalpowerinafiberusingacalibratedopticalpowermeter.

– Ifthelasersafetyorhazardlevelrequirestheuseofeyeprotection,onlyuse
equipmentwhichhasbeentestedandapprovedforthewavelengthsand
opticalpowerinvolved.
– Anysingleormultiplefiberendsorendsfoundnottobeterminatedwith
powerlevelsexceedinghazardlevel1(acc.IEC60825‐2)shouldbeindividually
orcollectivelycoveredbymaterialwithsufficientattenuationoftheoptical
poweratthewavelengthconcerned.
– Donotmakeanyunauthorizedmodificationstoanyopticalfibersystemor
associatedequipment.
– Replacedamagedopticalsafetylabelsorattachnewlabelsiflabelsare
missing.


Operatingmanual
Rev.1.0RLT‐1550D105
3GENERALDESCRIPTION
3.1 INTRODUCTION

TheUltraWideBand47‐2.700MHzopticalLaserTransmitter,Rover“RLT”series,
employsahighperformanceisolatedandthermallystabilizedDFBLaserwith
extremeSuperiorLinearity,designedforhighchannelLoading,Analog/DigitalCATV
&SATsignals.

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•The“RLT”seriesOperateat1550nmWavelengthaccordingtoITU‐GRID,theunit
isdesignedforadvancedsinglemodeopticalfibernetworks,withDWDMITU‐grid
(DenseWavelengthDivisionMultiplex),orCWDMgrid(CoarseWavelengthDivision
Multiplex).
3.2 VIEWSOFRLT‐1550D10


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1. Hotswapfan
2.LEDLaserPWRstatus
3.USBport
4.MainLASEROUT.
Laserradiation,donotview
directlywithoptical
instruments,class1Mlaser
product
5.OneTestPointmainCATVlevel:
47‐870MHzat‐20dB

6.TwoTestPointlaserdrivelevel:
80dBμV,47‐870MHz5%OMI
+2ΔOpt.Pwr
7.Hotswapfan
8.LEDmainCATVINstatus
9.LEDlasertempstatus
10.LEDAC/DCmainsstatus

FRONTVIEW

Operatingmanual
Rev.1.0RLT‐1550D106


1.Grounding
2.OptionalrearLaserOUT4
3.OptionalrearLaserOUT3
4.OptionalrearLaserOUT2
5.OptionalmainrearLaserOUT1
6.MainCATVIN:
47‐870MHz80dBμVtyp.
7.HighlevelCATVIN:
47‐870MHz100dBμVtyp.
8.MainSATIN:
950‐2.700MHz90dBμVMAX+2
9.ManagementLAN
10.P.S.U.B‐Switch
11.P.S.U.A‐Switch
12.ACmains&Fuse‐B
13.ACmains&Fuse‐A
Fusevalue230=2,5A
Fusevalue110=3,15A


1.Grounding
2.OptionalopticOUT4
3.OptionalopticOUT3
4.OptionalopticOUT2
5.OptionalmainopticOUT1
6.MainCATVIN
7.HighlevelCATVIN
8.MainSATIN
9.ManagementLAN
10.P.S.U.B‐Switch
11.P.S.U.B48Vdc
12.DC48VIN
13.ACMAINS&FUSE‐A
Fusevalue230=2,5A
Fusevalue110=3,15A

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REARVIEW

Operatingmanual
Rev.1.0RLT‐1550D107
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INTERNALVIEW
BLOCKDIAGRAM

Operatingmanual
Rev.1.0RLT‐1550D108
3.3 INSTALLINGANDSTARTINGRLT‐1550D10

Instructionforcorrectlyhandlingdevice
1. TheRLT‐1550D10hasbeplacedintooperationunderthespecified
environmentalconditions.Avoidtemperatureshocksaftermodule
transportationandwaitingsufficienttimetoaccommodatewiththe
environmentalconditionsattheoperatingsite.

2. CheckmatchingbetweenusedrackandmechanicalRLT‐1550D10(19’’,ETSI
orJIS)

3. Connectpowersupplyonthemodule’srearwithdeliveredpoweringcable
only.

4. Pleaseobservelasersafetyrequirements(refertothesafetyinstructions)and
connectmoduleRFandoptical.Handlefibercarefullyandrememberthatthe
smallestpermissiblebendingradiusforfiberis30mm.

5. Turnonthemoduleatrearpowerswitch.

6. Afterstart,the“Module”LEDonthefrontislighteninggreen

7. ConnectthetransmitterbymanagementLANportthatprovidesaccesstothe
completeoperatingparametersconfigurationsandtoalarmsmonitoring
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4TECHNICALSPECIFICATION
4.1 MAINFEATURES
The“RLT”seriesOperateat1550nmWavelengthaccordingtoITU‐GRID,theunitis
designedforadvancedsinglemodeopticalfibernetworks,withDWDMITU‐grid

Operatingmanual
Rev.1.0RLT‐1550D109
(DenseWavelengthDivisionMultiplex),orCWDMgrid
(CoarseWavelengthDivisionMultiplex).

•Finetuning(±100GHz)
AvailableforDWDMversion,toenableonechannelreconfigurationbasedonITU
gridchannelnumberasintable


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•LownoiseHighLinearityDFBLaserforexcellentRIN(RelativelyIntensity
Noise)

Operatingmanual
Rev.1.0RLT‐1550D1010
ThespectraldensityofRINstandard,as
approximatedbythermalGaussianlight,couldbeobtainedfrom
combinationofmeasurementandtheory‐basedcalculation.

Itisveryimportantbecausethenoisefigureofanopticalamplifiercan
dependonthesignalinputRIN
•HighstabilitythermoelectricLasercooler(DWDMVersion)
DWDM(DenseWavelengthDivisionMultiplex)modulationutilizes
multiplelaserstoobtainlargemultichanneldatastreams.Thenarrow
channelspacingreliesonlaserwavelengthiscontrolledwithin0,1nm
buttemperaturevariationinfluencesoperation.Soatypical
temperaturecontrolof0,1°Cisrequiredtomaintainlaseroperation
within0,1nm.
•CATVInput:
CATVinputfrom47to870MHz(oropt.47‐1.002)forAnalogTVand
DigitalQAMSignals
ThenominallevelforCATVmaininputvariesfrom72dbµVto80dbµV.
ThenominallevelforhighlevelCATVinputis100dbµV,butmustusea
separateCATVinput
•SATInput950‐2.700MHzforDigitalSATTransponder
NominallevelforSATinputlevel92dbuV/trasp.typ,90minimum
•InputlevelSignalTestPointonFrontpanel
•LaserOutputPoweravailable,from+3to+10dBm
•LaseroutputconnectoravailableonFront,orRearPanel
•SC/APCLaserOutputConnector
•AutomaticchannelsloadControlforstableOMI
TheopticaltransmitteradjuststheoptimummodulationindexOMIby
AGC(AutomaticGainControl)thatautomaticallyadjuststheRFgain.
Typicallyabout5%istheoptimumOMIforanalogvideoinbroadcasting
application
•LaserDriverLevelTestPoint(forOMImeasurement),onfrontpanel
•Allparametersandpre‐corrections,adjustableviaUSB/LANport:Output
LaserPower,Slope,wavelengthfinetuning,Gain(AGC),OMI,SBS,CSOpre‐
distortion,chirp.
TheCNRisthedifference,indecibels,betweentheamplitudeofanRFsignal
andtheamplitudeofthermalnoisepresentinthetransmissionpathoftheRF
signal
CSO(CarriertoSecondOrder)andCTO(CarriertoTripleBeat)aredistortion
componentcausedbynon‐linearmixingofcarrierinthetransmissionsystem
asaresultoflaser“clipping”thatoccurswhentheopticalmodulationindex

Operatingmanual
Rev.1.0RLT‐1550D1011
(OMI)oflaseristoohigh.Thisiswhenthepeak
modulatingcurrentexceedsthed.c.biascurrentlevelabovethreshold.
•USBandLAN‐Portforlocal&RemoteControlInterface
•Built‐in2or4WayOpticalsplitter,opt.
•RedundancyPSU:2x230V‐ACopt.or1x230V‐AC+1x48V‐DCopt.
•Slim1Unit,19”Rack
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4.2 INPUTCATV&SAT
CATVFrequencyrange47‐870MHz(option47‐1.000TVonly)
SATFrequencyrange950‐2700MHz
RFconnectors75ohmtype“F”
RFReturnLossTV=>16dB
SAT=>12dB
NominallevelforCATVmaininput80dbuV/typ.72minimum
NominallevelforhighlevelCATVinput100dbuV/CH
NominallevelforSATinputlevel92dbuV/trasp.typ,90minimum
Testpoint1mainCATVinputinputlevel‐20dB
Testpoint2laserdrivelevel80dbuV/5%OMI
GainmodeCATV:AGCorManual
SAT:Manual
GainadjustmentCATVmanual+11/‐11dB,AGC30dBMax
SlopeadjustmentCATV‐3/+15dB
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4.3 LASERSPECIFICATION
DWDMversionCWDMversion
LasertypeDFBCooledbutterflyDFBuncooledcoaxial
OpticalwavelegthITUgrid100GHz,channels20to60
availables(1.530to1.560nmapprox)
1.550+/‐4nm
LaserOutputpowerFrom+3to+10dBm
Powerstability+/‐0.5dB+/‐1dB
OpticalPowerAdjustement0to‐3dB
Wavelengthfinetuning‐100to+100GHz,50GHzsteps
RIN‐155db/Hzworstcase‐150db/Hzworstcase
Opticalinsulation30dbmin30dbmin
OpticalReturnLossv>45dB>40dB
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Operatingmanual
Rev.1.0RLT‐1550D1012
4.4 POWERSUPPLY
Mainpowersupply230V‐AC50hz
RedundancyPowerSupply48V‐DC
Powerconsumption<20W
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4.5 SAFETY&ENVIRONMENT
SafetyEN50083‐1andEN60950
Seeyellowlabelontheequipment.
LaserSafetyClass1Macc.IEC60825‐1(eyesafefornormalviewing).
Duringnormaloperationslaserbeamisconfinedwithinoptical
fiber.OpticaltransmitterisintendedtoworkONLYconnected
totheproperopticalnetwork
InstallationenvironmentTemperaturerange:–5°/+45°
AccordingtoETS300019‐1‐3Class3,1ControlledTemp.Loc.
Relativehumidity90%
EMCEN50083‐2
4.6 CATVNETWORKPERFORMANCE
Channelallocation
plan(numberof
channel)=Cenelec42
Channelallocationplan
(numberof
channel77AnalogNTSC+
75DigitalQAM*
(DWDMVersion)53dB(1)
51,5dB(2)
52dB(1)
51dB(2)
CNR(1550nm)
(CWDMVersion)51(1)50,5(1)
 
(DWDMVersion)>60dB(2)>60dB(2)CSO(1550nm)
(CWDMVersion)>58dB(2)>58dB(2)
 
(DWDMVersion)>62dB(2)>62,5dB(2)CTB(1550nm)
(CWDMVersion)>64dB(2)>64dB(2)
 
(DWDMVersion)>58dB(2)>57dB(2)CXM(1550nm)
(CWDMVersion)>55dB(2)>55dB(2)
* flat output, digital channels – 6db level (Analog channels below 550 MHz) (Digital channels above 550
MHz)
LINK TYPE:
1) Link type 1=tx+0km fiber+ optical attenuator + RX
2) Link type 2= tx+20km fiber G652+ optical attenuator + RX
RX: received power= 0dBm, noise current = typRX: received power= 0dBm, noise current = 7pA/√Hz
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