1. DESCRIPTION OF CATV Optical Transmitter 1550nm External
Modulation* Optical Transmitter* 1550nm External Modulation*
Output: 1 or 2 port* Output Power:3dBm,5dBm,6dBm,7dBm,8.5dBm...is
optional* Operation Wavelength:1540~1563nm*
CNR≥52dB,CTB≤-65dB,CSO≤-65dB,SBS:13,16,18dBm Adjustable* Work
Bandwidth:47~862,1000,1080MHz is Optional*
Connector:SC/APC,LC/APC,FC/APC is Optional* Power :90~265VAC or
-48VDC* Size:19''x14.5''x1.75''2. FEATURE OF CATV Optical
Transmitter 1550nm External Modulation* High performance:
Externally modulated technology for optical transmitter, no
laserchirp, low dispersion distortion, high extinction ratio, with
excellentcharacteristic within 40~862MHzin-band.* Narrow
bandwidth(Typ.=1MHz),lower noise, DFB continuous wave laser.* The
operating bandwidth of optical transmitter is up to 47~1080MHz.*
Perfect index: Unique innovation technology, provide excellent CNR,
CTB, CSO&SBS.* ITU standard wavelength adjustable, the user can
adjust and set the laserwavelength on the front-panel with ±0.05nm
stepping in the range of ±200GHz(±1.6nm),used in the network
upgrading and expansion of WDM system.* AGC/MGC MODE IS OPTIONAL AT
SPOT. OMI can be optimized at spot.* Perfect RS232 communication
interface.* SNMP network management function optional.* 1+1 backup
power supply optional.* Casing temperature auto-control.* Excellent
Price-Performance.3. MAIN APPLICATION OF CATV Optical Transmitter
1550nm External Modulation* Used in middle and small CATV center
head end, solve thetransmission of trunk and distributive network
with high quality and low cost.* Usedin second-grade service area
of sub-station. With excellent price-performance,
providesecond-grade users with high quality and high reliability
value added servicesuch as RFTV, IPTV, VOD and so on. It can avoid
the limitation on transmissionbandwidth and distance as well as
system CSO deterioration caused by laserchirp for adoption 1550nm
direction modulated optical transmitter.4. TEST CONDITIONCNR1: Txto
Rx, 0dBm receiving.CNR2:16dBm EDFA (NF4.5~5.5dB), 65km fiber, 0dBm
receiving.5. PRODUCT PERFORMANCEPerformanceIndexSupplementOptic
featureOperating
wavelength(nm)1540~1563DT-OTEM1500CITU-TG.692DT-OTEM1500UWavelength
ADJ. range(nm)±1.6 (±200GHz)DT-OTEM1500UWavelength
ADJ.mode ±0.05nm steppingDT-OTEM1500ULine
width(MHz)≤1.0FWHM(Δλ)Side mode suppression
ratio(dB)≥45SMSREquivalent noise intensity(dB/Hz)≤-160RIN
(20~1000MHz)Output power(dBm)2×7Optional 2×3, 2×6, 2×9Return
loss(dB)≥60 optical fiber
connector SC/APCOptionalLC/APC,FC/APCRF featureWork
bandwidth(MHz)47-86247~1000,47~1080 optionalInput
level(dBmV)18~28AGCFlatness(dB)≤±0.7547~862MHz≤±1.5862~1000MHz(Optional)Return
loss(dB)>16 Input impedance(Ω)75 RF
port F-Female Link featureTransmit
channel PAL-D/60CHPAL-D/99CH CNR1(dB)≥53.0≥51.5Back to
backCNR2(dB)≥51.5≥50.065Km optical fiber, 0dBm
receiveCTB(dB)≤-65≤-65 CSO(dB)≤-65≤-65 SBS
restrain(dBm)13, 16, 181AdjustableGeneral featureSNMP
networkmanagement interface RJ45 Communication
interface RS232 Power supply(V)90~265VAC-48VDC
optionalPower Consume(W)≤50Single power worksWork
temp.(°C)0~50Machine temp. control automaticallyStorage
temp.(°C)-40~85 Operating relative
humidity(%)5~95 Size(")19×14.5×1.75(W)x(D)x(H)* Remark:
1.SBS=18dBm, EDFA 18dbm outputfiber, port to port
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