Product Overview

Description

Product Summary

OPR-1004MLD outdoor optical node can be configured 2 forward path optical receiver modules, 2 return path optical transmitter modules, 1Ethernet transponder module and 2 switching power supply modules at most. Adopts advanced optical AGC technology, the adjustment of output level and output slope both adopt fixed inserter. Add LED nixie tube display function, can output 4-way forward path signal (≥108dBμV) at most.

 

Performance Characteristics

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

2)   Forward path optical receiving part: RF operating bandwidth extended to 1GHz, each way maximum output level up to 114dBμv.

3)   The attenuation and equilibrium control circuit adopts fixed inserter, and achieve remote monitoring by NMS.

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

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

6)   Built-in tri-state gate switch circuit in the return path. Three states passthrough, -6dB and OFF can be remote set by network management responder.

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

 

Technique Parameter

Item	Unit	Performance Parameters
Forward Optical Receive Part
Optical Parameters
Optical AGC control range	dBm	+2~-8/-7/-6/-5 adjustable
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
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	≥ 108                                                                (when the optical AGC control range is +2~-8)
Max output level	dBμV	≥ 114                                                                  (when the optical AGC control range is +2~-5)
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)
Return 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	75~ 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

4 Block Diagram

 

Relation Table of Input Optical Power and CNR