CATV Outdoor cable line optic fiber workstation in HFC network

GN-2R-M Outdoor RFoG Optical Workstation
Summary
GN-2R-M outdoor optical workstation is mainly used in FTTB structural CATV bi-directional HFC network.Adopt modular mechanical combination structure,RF amplifier unit and switching power supply module share one modular frame in the bottom cover.The top cover can be configured 1 forward optical receiver module.1 reverse optical transmitter module and 1 class responder module.
FeatureAdvanced optical AGC function,the input optical power range up to -9~+2dBm.Downlink RF operating bandwidth extended to 1 GHz,the highest output level more than 108dBuV.Professional RF electrical adj ATT chip,RF electrical adjustable equilibrium circuit,good linearity,high precision.The return path adopts professional RF electrical adj ATT chip instead of the three-state switch.Reverse transmitter configure burst mode,sharply decrease the noise collection and reduce the front-end receivers no.Full CPU control the machine work,LCD displays the parameters,and can be configured national standard II class network managemaent responder.The structure adopts embedded modular design,easy to maintain and replace.
Specification
Item
Unit
Parameters
Forward Optical Receive Part
Optical Part
Receiving Optical Power
dBm
-9~+2
Suggested Use Range
dBm
-3~+1
Optical Return loss
dB
>45
Optical Receiving Wavelength
nm
1100~1600
Optical Connector Type
/
FC/SC A PC(by user)
Optical Fiber Type
/
Single mode
link part
C/N
dB
≥51 received optical power(-1dBm)
C/CTB
dB
≥65
C/CSO
dB
≥60
RF part
Frequency Range
MHz
45/47/54/70/85~862(1003)
Flatness in Band
dB
±0.75
Rated Output Level
dBuV
≥108
Max Output Level
dBuV
≥112(-9~+2dBm optical power received)
≥116(-7~+2dBm optical power received)
Optical AGC Range
/
-9/-8/-7dBm~+2dBm adj.
Output Return Loss
dB
≥16
Output Impedance
Ω
75
Reverse Optical Transmit Part
Optical part
Optical Transmit Wavelength
nm
1310/1550±10,by user
Laser Type
/
DFB or FP
Output Optical Power
mw
0.5/1/2
Optical Connector Type
/
FC/SC A PC,by user
RF part
Frequency Range
MHz
5~30/42/55/65
Flatness in Band
dB
±0.75
Input level
dBuV
75~85
Input Retrun Loss
dB
≥16
Output Impedance
Ω
75
NPR Dynamic range
dB
≥15(NPR≥30)DFB
≥10(NPR≥30)FP
General
Power Voltage
V
AC135~250V/35~90V,50MHz
Operating Temp
°C
-30~+70
Storage Temp
°C
-30~+70
Relative Humidity
%
Max 95% no condensation
Consumption
W
≤40
Dimension
Mm
295*210*150