Outdoor Optical Node, Advanced Optical AGC Technology

China Outdoor Optical Node, Advanced Optical AGC Technology, Find details about China Outdoor Optical Node, Optical Node from Outdoor Optical Node, Advanced Optical AGC Technology

Model NO.
WR-1004HJS-A
Origin
Zhejiang, China (Mainland)
Model NO.
WR-1004HJS-A
Origin
Zhejiang, China (Mainland)


 

1. Product Summary

 

WR-1004HJS-Aoutdoor optical node can be configured 2 forward path optical receiver modules, 2 return path optical transmitter modules, 1 Ethernet transponder module and 2 switching power supply modules at most. Adopts advanced optical AGC technology, the output level and output slope both adopt the electric control circuit. Add LED nixie tube display function, the forward path output signal 116dBμV.

 

 Outdoor Optical Node, Advanced Optical AGC Technology

 

2. Performance Characteristics

 

      Forward path optical receiving part adopts advanced optical AGC technology, the input optical power range extended to -8~+2dBm.

 

      Forward path optical receiving part: RF operating bandwidth extended to 1GHz, each way maximum output level up to 116dBμv.

 

        Full electric adjust attenuation and equilibrium control circuit, and achieve remote operation by NMS.

 

       RF amplifier part adopts quick plug modular design, can quickly replace RF amplifier module without dismantling the RF cable connector.

 

        Built-in perfect condition monitoring circuit, and support Ethernet transponder.

 

      Reserved C-CMTS forward path and return path RF interface, support DOCSIS EOC networking scheme.

 

 

 

3. Technique Parameter

 

3.1 Link testing conditions

 

The performance 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.

 

  1. 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 -1dBm, the RF output level is 108dBμV, with 8dB output slope, measure the C/CTB, C/CSO and C/N.

  2. 2.        Return optical transmit part: Link flatness and NPR dynamic range are the link indexes which is composed of return path optical transmitter and optical receiver.




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Note: When the rated output level is the system full configuration and the receiving optical power is -1dBm, equipment meets the maximum output level of link index. When the system configuration degrade (that is, the actual transmission channels reduce), the output level of equipment will be increased.

 

Friendly Notice: Suggest you setting the RF signal to 6~9dB slope output in the practical engineering application to improve the nonlinear index of the cable system.

 

 

 

3.2 Performance Parameters

 











































































































































































 

Item

Unit

Performance Parameters

Forward Optical Receive Part

Optical Parameters

Optical AGC control range

dBm

-8 ~ +2

Optical return loss

dB

>45

Optical receiving 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

-1dBm optical input, output level 108dBμV, EQ 8dB

C/CTB

dB

≥ 65

C/CSO

dB

≥ 60

RF Parameters

Frequency range

MHz

45/87 ~862/1003

Flatness in band

dB

±0.75

Rated output level

dBμV

≥ 110

Max output level

dBμV

≥ 116

Output return loss

dB

(85 ~550MHz) ≥16 / (550~1000MHz) ≥14

Redundant receiver isolation

dB

≥75

Output impedance

Ω

75

Electrical control EQ range

dB

0~15 (1dB stepping)

Electrical control ATT range

dB

0~20 (1dB stepping)

Reverse 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

1

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

±0.75

Input level

dBμV

72~ 85

Input return loss

dB

≥16

Independent transmitter isolation

dB

≥60

Input impedance

Ω

75

NPR dynamic range

dB

≥15 (NPR≥30 dB)

Use DFB laser

≥10 (NPR≥30 dB)

Use FP laser

 

 

 

 

 

 

 

 

 




























































 
 

RF Parameters of C-CMTS Interface

CMTS_DS

Level of forward path insert port

dBμV

≥102

CMTS_US

Gain of return path output port

dB

1±1

Port ~ CMTS_US output

Isolation of forward path to CMTS_US return path output port

dB

≥70

General Performance

Power voltage

V

A: AC(150~265)V;  B: AC (35~90)V

Feed current through

A

10

Operating temperature

ºC

-40~+60

Storage temperature

ºC

-40~+70

Relative humidity

%

Max 95% no condensation

Consumption

VA

≤ 65

Dimension

mm

360 (L)×330 (W)×161 (H)