Product
RET-1550H
SBS 13~18dBm adjustable Dual Optical Outputs 1550nm External Modulated Optical Transmitter
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- Datasheet
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● External modulator technology without laser chirp, extremely low dispersion distortion, high extinction ratio, can be used for overlong trunk and high speed communication.
● Narrow linewidth (typ.=0.65MHz), low noise figure, DFB continuous wave laser, it is advantageous to reduce the influence from dispersion.
● Max 862MHz/1080MHz work bandwidth option.
● Excellent CTB, CSO and CNR value.
● SBS 13~18dBm continuous adjustable, 0.5dB stepping.
● Support ITU wavelength.
● AGC/MGC mode is optional at spot, OMI optional at spot.
● RS232 communication interface and SNMP network management.
● Back-up power supply optional.
● Chassis temperature automatically control.
● High cost-effective 1550nm external modulated optical transmitter.
● Narrow linewidth (typ.=0.65MHz), low noise figure, DFB continuous wave laser, it is advantageous to reduce the influence from dispersion.
● Max 862MHz/1080MHz work bandwidth option.
● Excellent CTB, CSO and CNR value.
● SBS 13~18dBm continuous adjustable, 0.5dB stepping.
● Support ITU wavelength.
● AGC/MGC mode is optional at spot, OMI optional at spot.
● RS232 communication interface and SNMP network management.
● Back-up power supply optional.
● Chassis temperature automatically control.
● High cost-effective 1550nm external modulated optical transmitter.
Parameter
|
Unit
|
Index
|
Optical Parameter
|
||
Operating Wavelength
|
nm
|
1548~1563nm
|
ITU wavelength
|
||
Laser Linewidth
|
MHz
|
≤0.65
|
Side mode suppression ratio
|
dB
|
≥45
|
Equivalent noise intensity
|
dB/Hz
|
≤-160
|
Output Port Number
|
/
|
2
|
Output power
|
dBm
|
5/6/7/9
|
Return loss
|
dB
|
≥50
|
Optical Connector
|
/
|
SC/APC, FC/APC
|
RF Parameter
|
||
Work Bandwidth
|
MHz
|
47~862/1000/1080
|
Flatness
|
dB
|
± 0.75
|
Input Level
|
dBuV
|
78~88 (AGC)
|
Input Impedance
|
Ω
|
75
|
RF Return Loss
|
dB
|
>15
|
RF Port
|
/
|
F-Female
|
Link Parameter
|
||
Test Channel Number
|
/
|
PAL-D/60CH
|
CNR1
|
dB
|
≥53
(Back to Back)
|
CNR2
|
dB
|
≥51.5
(50KM optical fiber, 0dBm receiving)
|
CTB
|
dB
|
≤-65
|
CSO
|
dB
|
≤-65
|
SBS
|
dBm
|
13~18, 0.5dB stepping
|
General Parameter
|
||
Power Supply
|
V
|
90~265VAC or 48VDC
|
Power Consumption
|
W
|
≤50
|
Operating Temp.
|
℃
|
-5~65
|
Storage Temp.
|
℃
|
-40~85
|
Operating relative humidity
|
%
|
5~95
|
Communication interface
|
/
|
RS232
|
SNMP network management interface
|
/
|
RJ45
|
Dimension
|
mm
|
483*368*44
|
● For center office overlong trunk to transfer RFTV, IF/SAT.
Anlog and digital mixed transmission>200Km ((with using dispersion compensation)
Pure digital transmission (without using dispersion compensation)>400Km, (with using dispersion compensation) >700Km.
● ITU wavelength optical transmitter is suit for DWDM optical fiber CATV system added value service and CFG dispersion compensation system.
● Available to the substation FTTH which request high index. Point to Point >65Km, CSO≤-65dB. It can provide RFTV, IPTV and VOD added value service to second-grade service area with high quality and high reliability. To aviod the CSO degradation and transmission distance limited by using 1550nm direct modulated optical transmitter.
Anlog and digital mixed transmission>200Km ((with using dispersion compensation)
Pure digital transmission (without using dispersion compensation)>400Km, (with using dispersion compensation) >700Km.
● ITU wavelength optical transmitter is suit for DWDM optical fiber CATV system added value service and CFG dispersion compensation system.
● Available to the substation FTTH which request high index. Point to Point >65Km, CSO≤-65dB. It can provide RFTV, IPTV and VOD added value service to second-grade service area with high quality and high reliability. To aviod the CSO degradation and transmission distance limited by using 1550nm direct modulated optical transmitter.