Description
Fiber optic transmitters adopt high linearity cooling DFB laser, direct modulated. Realize the simultaneous transmission of 47-862MHz CATV signal and 960~2600MHz satellite direct TV signal in one optical fiber.
Fiber optical transmitter can use ITU standard wave length and DWDM to realize network upgrade and expansion. Its optical power can be amplified by EDFA and YEDFA, achieve large area FTTH. It can be compatible with FTTx PON technology to realize FTTH and the multi-network integration of CATV (Analog and Digital TV), Satellite Television (DVB-S) and Internet.
Directional modulated optical transmitter adopts 1U 19” standard rack, microprocessor controls the working parameters, front panel LCD provides status display and fault diagnosis. Standard RJ45 communication interface, with SNMP network management function. Built-in perfect laser APC and ATC control circuit to ensure the long working life and high reliable work of the laser.
SAT-IF adopts high linearity IF driving amplifier circuit with AGC function to ensure the high quality transmission of Analog TV, Digital TV (DVB-C, DVB-T) and Satellite TV in one optical fiber.
Specification
|
Performance
|
Index
|
Unit
|
Remark
|
|
Optical Characteristics
|
|
Laser Type
|
DFB
|
|
Specified by the user
|
|
Optical Wavelength
|
1310, 1550 or specified by the user
|
nm
|
Specified by the user
|
|
Output Optical Power
|
2, 4, 6, 8, 10
|
mW
|
Specified by the user
|
|
Output Return Loss
|
50
|
dB
|
|
|
Optical Connector Type
|
SC/APC or FC/APC
|
|
Specified by the user
|
|
Fiber Optic Transmitters' CATV RF Characteristics
|
|
Working Bandwidth
|
45-862
|
MHz
|
|
|
InputRange
|
75~85
|
dBµV
|
Input level
|
|
Flatness
|
±1
|
dB
|
|
|
Input Return Loss
|
14
|
dB
|
|
|
C/N
|
≥51
|
dB
|
42CH CENELEC 80dBµV AGC OMI=3.8%
|
|
C/CTB
|
≥63
|
dB
|
|
C/CSO
|
≥58
|
dB
|
|
Input Impedance
|
75
|
Ω
|
|
|
RF Connector
|
F type Male/Female
|
|
Specified by the user
|
|
Fiber Optical Transmitter's SAT-IF Characteristics
|
|
Working Bandwidth
|
950~2600
|
MHz
|
|
|
InputRange
|
68~83
|
dBµV
|
Input level
|
|
Flatness
|
±1
|
dB
|
|
|
Input Return Loss
|
10
|
dB
|
|
|
C/IM3
|
≥55
|
|
Note1
|
|
Directional Modulated Optical Transmitter's General Characteristics
|
|
Power Supply (AC)
|
110~265
|
V
|
Optional dual power
|
|
Consumption
|
20
|
mW
|
|
|
SNMP network management interface
|
RJ45
|
|
|
|
Working Temperature
|
0~50
|
°C
|
|
|
Storage Temperature
|
-40~60
|
°C
|
|
|
Dimension (W)*(D)*(H)
|
1U 19 inch
483*395*44
|
mm
|
|
|
Note1: C/IM3 is defined as the ratio between the peak of carrier signal and triple beat (IM3) by using a two-tone test (1.0GHz and 1.1GHz).
|
Fiber Optic Transmitters' Application
• One optical fiber transmit CATV and SLDTV
• FTTxPON (EPON, GPON)
