CATV Fttc FTTB Outdoor Two-Way Optical Receiver/Optical Node

• Application: CATV Hfc
• Type: Single-mode Fiber
• Connection Structure: SC
• Material Shape: Round Wire
• Core: Single Core
• Certification: RoHS, CE, ISO9001
• Model NO.: WR8602ML
• Brand: Prevail
• Frequency Range: 85 ~1003MHz
• Optical Return Loss: >45
• Optical Receiving Wavelength: 1100 ~ 1600
• Optical Connector Type: FC/APC, Sc/APC or Specified by The User
• Fiber Type: Single Mode
• Receiving Optical Power: -9 ~ +2
• Rated Output Level: ≥ 108
• Transport Package: Netrual or According to Customer′s Request
• Specification: Outdoor
• Trademark: fobetmoc/Prevail
• Origin: China
• Production Capacity: 10000PCS/Month

Product Description

1. Product Summary
WR8602ML is our latest universal CATV network optical receiver. The pre-amp adopts full GaAs MMIC amplifier, while the post-amp adopts GaAs power doubly amplifier module. Fixed ATT and EQ inserter is selected by the users. And according to actual needs, users can also choose a more targeted high quality module combination. Optimized circuit design coupled with our 10 years professional design experience, make the equipment achieve good performance indexes. It is an ideal model to build the CATV network.

2. Performance Characteristics

• High responsivity PIN photoelectric conversion tube.
• Ten bar LED optical power indicator shows more accurate optical power.
• Configured EOC master signal insert port, easy to access to the Ethernet.
• Optimized circuit design, preceding stage adopts SMT process and post stage adopts typical module amplifier circuit, make the photoelectronic signal transmission more smooth.
• Power doubler output, with high gain and low distortion.
• Optical AGC control, when the input optical power range is -7~+2dBm, the output level, CTB and CSO basically unchanged.
• Return path can select burst mode to sharply decrease the noise convergence and greatly increase the quality and reliability of network operation. 

3. Technique Parameter
3.1 Link testing conditions
The technique parameters of this manual according to the measuring method of GY/T 194-2003 <Specifications and methods of measurement on optical node used in CATV systems>, and tested in the following conditions.
Testing conditions:

1. Forward optical receive part: with 10km standard optical fiber, passive optical attenuator and standard optical transmitter composed the testing link. Set 59 PAL-D analog TV channel signal at range of 45/87MHz~550MHz under the specified link loss. Transmit digital modulation signal at range of 550MHz~862/1003MHz, the digital modulation signal level (in 8 MHz bandwidth) is 10dB lower than analog signal carrier level. When the input optical power of optical receiver is -2dBm, the RF output level is 108dBμV, with 9dB output tilt, measure the C/CTB, C/CSO and C/N.
2. Backward optical transmit part: Link flatness and NPR dynamic range are the link indexes which is composed of backward optical transmitter and backward optical receiver.

Note: When the rated output level is the system full configuration and the receiving optical power is -2dBm, equipment meets the maximum output level of link index. When the system configuration reduce (that is, actual transmission channels reduce), the output level of equipment will be increased.
Friendly Notice: Suggest you setting the RF signal to 6~9dB tilt output in the practical engineering application to improve the nonlinear index (behind the node) of the cable system. 
3.2 Technique Parameters

Item	Unit	Technical Parameters
		WR8602ML  WR8602ML-1G
Forward optical receiving part
Optical  Parameters
Receiving Optical Power	dBm	-7 ~ +2
Optical Return Loss	dB	>45
Optical Receiving Wavelength	nm	1100 ~ 1600
Optical Connector Type		FC/APC, SC/APC or specified by the user
Fiber Type		Single mode
Link  Parameters
C/N	dB	≥ 51 (-2dBm input)
C/CTB	dB	≥ 65	Input -2dBm, Output level 108 dBμV Equilibrium 6dB
C/CSO	dB	≥ 60
RF  Parameters
Frequency Range	MHz	45 ~862/1003
Flatness in Band	dB	±0.75
Rated Output Level	dBμV	≥ 108(-7~2dBm)
Max Output Level	dBμV	≥ 114
Output Return Loss	dB	≥14
Output Impedance	Ω	75
Equilibrium	dB	Fixed EQ inserter (selected)
Attenuation	dB	Fixed ATT inserter (selected)
Return Optical Emission part
Optical  Parameters
Optical Emission Wavelength	nm	1310±10, 1550±10 or specified by the user
Output Optical Power	mW	0.5, 1, 2
Optical Connector Type		FC/APC, SC/APC or specified by the user
RF  Parameters
Frequency Range	MHz	5 ~ 65 (or specified by the user)
Flatness in Band	dB	±1
Input Level	dBμV	72 ~ 85
Output Impedance	Ω	75
Burst Mode (Select this mode, see below)
Output Optical Power (Close the burst mode)	dBm	-30
Laser Turn On Threshold	dBμV	≥70
Laser Turn Off Threshold	dBμV	≤62
Laser Turn On Time (t1)	us	0.5≤ t1 ≤1
Laser Turn Off Time (t2)	us	0.5≤ t2 ≤1.5

 

General Characteristics
Power Voltage	V	A:AC(150~265)V;B:AC(35~90)V
Operating Temperature	ºC	-40~60
Storage Temperature	ºC	-40~65
Relative Humidity	%	Max 95% no condensation
Consumption	VA	≤ 22
Dimension	mm	260(L)x 200(W)x130(H)

Note:Forward RF indexes given above are measured when the final stage output module using the MC7884. Use other module, the indexes will be different.

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Production Process