CATV Fttc FTTB 1GHz Outdoor Optical Node Receiver

Product Description

1. Product Summary
HJ series outdoor optical node are two-way optical joint equipment that based on several years research experience of CATV HFC fiber transmitting equipment, specifically developed for the HFC structure two-way metropolitan area broadband network. When designed the product, we have fully considered the FTTC (Fiber to the Customer) network topology, the engineering technical problems of CATV bidirectional return path noise, and the high reliability network security transmission requirement of modern CATV business; optimize the internal circuit structure, and built a perfect states monitoring circuit. Reserved the network management interface which compatible with the SNMP standard, achieve remote network management monitor by the network management transponder. It is the first choice equipment to construct the high-quality bidirectional HFC metropolitan area broadband network.
2. Performance Characteristics

Full CPU control the machine work, LCD displays the parameters, such as the input/output level. Variable control operation is convenient and intuitive, and performance is stable. Reduced a large number of optional accessories.
Adopt advanced optical AGC technology, optical AGC control range: +2dBm ~ -9/-8/-7dBm adjustable.
Two-channel optical signal receiver backup each other, can set automatic switching condition arbitrarily, also can be set to manual switching.
Optimizing circuit design, SMT production process, optimizing the whole signal path, made the photoelectronic signal transmit more stable, RF linear index higher.
Professional RF electrical adjustable attenuation chip, RF electrical adjustable equilibrium circuit, good linearity, high precision.
GaAs amplifier device, power doubler output, high gain and low distortion.
The return path adopts professional RF electrical adjustable attenuation chip instead of the three-state switch.
Reserved the data communication interface, can connect the Ethernet transponder, access to the network management system, the variables can be remote controlled by the NMS.

Reserved the C-CMTS (forward/return path) RF interface, perfectly support DOCSIS EOC networking scheme.

3. Technical Parameters
3.1 Technical Parameters

Item	Unit	Technical Parameters
		HJ series
Forward Path Optical Receive Part
Optical Parameters
Receive Optical Power	dBm	-9 ~ +2
AGC Optical Power Range	dBm	(-9dBm/-8dBm/-7dBm)-(+2dBm) adjustable
Optical Return Loss	dB	> 45
Optical Receive Wavelength	nm	1100 ~ 1600
Optical Connector Type		FC/APC, SC/APC (or specified by the user)
Optical Fiber Type		Single Mode
Link Performance
C/N	dB	≥ 51
C/CTB	dB	≥ 65
C/CSO	dB	≥ 60
RF Parameters
Frequency Range	MHz	47/85~862/1003
Flatness in Band	dB	±0.75
Rated Output Level	dBμV	≥ 108
Max Output Level	dBμV	≥ 112
Output Return Loss	dB	≥16
Output Impedance	Ω	75
Return Path Optical Transmit Part
Optical Parameters
Optical Transmit Wavelength	nm	1310±10, 1550±10 or specified by the user
Laser Type		DFB or FP laser
Output Optical Power	mW	0.5, 1, 2, 3, 4
Optical Connector Type		SC/APC, FC/APC
RF Parameters
Frequency Range	MHz	5 ~ 65
Flatness in Band	dB	±0.75
Input Level	dBμV	75~85
Input Return Loss	dB	≥ 16
Output Impedance	Ω	75
NPR dynamic range	dB	≥15(NPR≥30 dB) Use DFB laser	≥10(NPR≥30 dB) Use FP laser
General Performance
Power Voltage	V	A:AC 135~250 V/50Hz; B:AC(DC)35~90V/50Hz
Operation Temperature	ºC	-30~+70
Storage Temperature	ºC	-30~+70
Relative Humidity	%	Max 95% non-condensing
Consumption	W	≤70
Dimension	mm	430(L)X 250(W)X170(H)