CATV Optical Communication System Platform:WOS-3000 1. Summary 1. WOS-3000 CATV Optical Fiber Communication System Platform is a multi-functional modularized Communication Platform which is developed to meet high-density requirements of CATV MAN Handend Room Equipment. 2. WOS-3000 CATV Optical Fiber Communication System Platform designed two Power Supply Modules and ten Function Modules in the room at the level of 19 3u, provide an intelligence Centralized – Monitor Unit also. It is easy to install and agile to configure; powerful, intelligence Centralized – Monitor Unit will monitor real-time operating parameters of each module, and will give an alarm when the machine broke down; The two-hot backup power structure improve the reliability of the system effectually with the Intelligent Temperature Control System controlled by microcomputer. 3. There are GB Grade II Transponders which will realize centralized monitoring network based on Ethernet in the WOS-3000 CATV Optical Fiber Communication System. There are also RS-232 Communication Interface that is the best choice to build up the high-performance two-way HFC Broadband Network. 4. Configurations: single or dual power supply back unit, 10-way optical transmission unit or 40-way opposite receiver unit that is full allocation, Forward Light Receiver or two-way optical signal switch automatically, EDFA, optical switch, RF switch. I.1550nm EDFA Module 1. Summary Adopt world famous brand low-noise pump laser. It has work width frequently and steady output optical power. Adopt import high performance Erbium doped fiber. It has high efficiency on energy transferring and low-noise. Completely SMT structure, small size, low consumption and high reliability. The perfect Microcomputer automatic supervisory circuit is built in. It accurately monitor the working status of laser to make sure this system can work steadily 2. Technique Parameters Technique Parameter Items Unit Working Bandwidth nm Input Optical Power Range dBm -12~+10 -8~+10 -3~+10 Output Optical Power dBm 10 ~19 16 ~22 13 ~24 Output Power Stability dB Noise Figure(When the Input Optical Power is 0dB ) dB Return Loss Pump Leakage Power Front Circuit Power 1535 ~1565 ±0.5 ≤ 4.0 ≤ 4.0 Input Port dB ≥ 45 Output Port dB ≥ 45 Input Port dBm ≤ -30 Output Port dBm ≤ -30 C/N dB ≥ 51 C/CTB dB ≥ 63 C/CSO dB ≥ 63 ≤ 5.0 FC/APC 或 SC/APC Optical Connector Type Power Voltage V AC 160V~250V (50 Hz) Working Temperature Range ℃ Indoor:-5~+55;Outdoor:-40~+65 Max Working Relative Humidity % Max. 95%no condensation Storage Temperature Range ℃ -30 ~+70 Max Storage Relative Humidity % Max. 95%no condensation Overall Dimension mm 3. Block Diagram Indoor:483(L)X 380(W)X 44(H) Outdoor:550(L)X 280(W)X 218(H) II. 1550nm Forward Optical Transmitter Module 1. Summary Develop and design specifically for overlay system, is mainly used in VOD system based on IPQAM technical scheme. Use 1550nm Directly Modulated Lasers only used in Dense Wavelength Division Multiplexing (DWDM) system, output optical wavelength is as long as standard ITU wavelength. The section of RF driver uses Digital Automatic Processing of RF power developed independently by us. It will adjust the RF drive power automatically according to the level and number (15 ~ 84 channels) of input RF signal, to make sure C / CSO, C / CTB and C / N Index always at their best. So the performance can be ensured, and Optical receiver output level of optical receiver can be steady. Advanced multi-frequency RF Predistortion with GaAs devices, improve the C / CTB and C / CSO Index the most important part of CATV efficiently, extremely improve the C/N and MER Index at the same time. Built-in perfect microcomputer automatic control circuit, monitor a variety of working conditions of output power and laser in real time, to make sure the optical output power is steady and extend the working life of the laser. 2. Technique Parameters Items Unit Technique Parameters Output Optical Power mW 4 – 10 Optical Wavelength nm 1562.23~1527.99 (ch19-ch62) Laser Type DFB Laser Optical Modulating Mode Directly Optical Intension Modulation FC/APC 或 SC/APC Optical Connector Type Frequency Range MHz 47~862 Input Level dBμV 72~88 Flatness in Band dB ±0.75 Input Impedance Ω 75 Input Return Loss dB ≥ 16(47~550)MHz;≥ 14(550~750/862MHz) C/CTB dB ≥ 65 C/CSO dB ≥ 60 C/N dB ≥ 51 AGC Controlled Range dB ±8 MGC Controlled Range dB ±8 Supply Voltage V AC 160V~250V(50 Hz) Power Consumption W 30 Operating Temperature ℃ 0 ~+45 Storage Temperature ℃ -20 ~+65 Relative Humidity % Max 95%No Condensation Dimension mm 483(L)X 380(W)X 44(H) 3. Block Diagram III.1310nm Forward Optical Transmitter Module 1. Summary Use international brand-name high performance DFB Laser with narrow line, good linearity and high output power. The section of RF driver uses Digital Automatic Processing of RF power developed independently by us. It will adjust the RF drive power automatically according to the level and number (15 ~ 84 channels) of input RF signal, to make sure C / CSO, C / CTB and C / N Index always at their best. So the performance can be ensured, and Optical receiver output level of optical receiver can be steady. Advanced multi-frequency RF Predistortion with GaAs devices, improve the C / CTB and C / CSO Index the most important part of CATV efficiently, extremely improve the C/N Index at the same time. Built-in perfect microcomputer automatic control circuit, monitor a variety of working conditions of output power and laser in real time, to make sure the optical output power is steady and extend the working life of the laser. 2. Technique Parameters Items Unit Technique Parameters Output Optical Power mW 4 6 8 10 12 14 16 18 20 22 Optical Link Loss dB 7 9 10 11 11.8 12.5 13 13.6 14 14.4 Optical Wavelength nm 1310±20 Laser Type DFB Laser Optical Modulating Mode Directly Optical Intension Modulation Optical Connector Type FC/APC 或 SC/APC Frequency Range MHz Input Level dBμV Flatness in Band dB ±0.75 Input Impedance Ω 75 Input Return Loss dB ≥ 16(47~550)MHz;≥ 14(550~750/862MHz) C/CTB dB ≥ 65 C/CSO dB ≥ 60 C/N dB ≥ 51 AGC Controlled Range dB ±8 MGC Controlled Range dB ±8 Supply Voltage V AC 160V~250V(50 Hz) Consumption W 30 Operating Temperature ℃ Storage Temperature ℃ -20 ~+65 Relative Humidity % Max 95%No Condensation Dimension mm 3. Block Diagram 47~750/862 Indoor:72~88;Outdoor:75~85 Indoor:-5~+55;Outdoor:-40~+65 Indoor:483(L)X 380(W)X 44(H) Outdoor:550(L)X 280(W)X 218(H) IV. Optical Switch Model 1. Summary Use American imported JDSU with low insert loss, short switch time and high reliability. Adopt advanced 32 processor, working in perfect automatic monitoring systemic circuit. It can timely monitor input power accurately and control status of switch witch is automatic or manual. 2. Technique Parameters Items Unit Technical Parameters Operating Wavelength nm 1200-1600 Insertion Loss dB Switching Time ns ≤1.3 (Test at 1310nm、1490nm、1550nm) ≤5 Return Loss dB ≥ 55 Max Input Optical Power mW 500 ≥10 Million times Switching Life Optical Connector Type dB FC/APC 或 SC/APC Operating Temperature Range ℃ -5 - +55 Storage Temperature Range ℃ -30 - +70 Relative Humidity % Max 95% No Condensation Consumption W ≤2 Supply Voltage V AC160V – 250V (50 Hz) Dimension mm 483(L)X 270(W)X 44(H) 3. Block Diagram V. RF Switch Mode 1. Summary RF Operating Bandwidth is 5-862MHZ. High Isolation is in the pass-band. Display channel status. 2. Technical Parameter Item Unit Technical Parameter Operating Band MHz 5 ~862 Insertion Loss dB ≤2 Flatness in Band dB ±0.75 Isolation dB 70 Input Impedance Ω 75 Output Impedance Ω 75 F 头(British System) Input Return Loss dB 5~550MHZ≥16;550~870MHZ≥14 Output Return Loss dB 5~550MHZ≥16;550~870MHZ≥14 Max Switching Time Operating Temperature MS ℃ 15 -20 ~+50 Relative Temperature % 0 ~85 RF Connector VI. Forward Optical Receiver Module 1. Summary Optic-Electric convertion part of Forward Optical Receiver Module is high sensitive PIN detector. RF Pre-amplifier is All GaAs MMIC circuit. And output part is GaAs redoubled power amplifier module. All use SMT production process, and the professional RF electrical muffler with good RF muffler linear, equalization linear and high precision. Add advanced optical AGC control circuit. When input optical power turn from -5 to +2dBm, the output level and C / CTB, C / CSO index constant. 2. Technique Parameters Items Unit Technique Parameters Optical Parameters Optical Receiving Power dBm -5~+2 Optical Return Loss dB >45 Optical Receiving Wavelength nm 1100 ~1600 Optical Connector Type SC/APC 单 Optical Fiber Type 模 Link Performance C/N dB ≥51 (-2dBm when receive) C/CTB dB ≥67 C/CSO dB ≥62 Output level 98 dBμV RF Parameters Frequency Range MHz 45~862 Flatness in Band dB ±0.75 Rated Output Level dBμV ≥98 Maximum Output Level dBμV ≥104 Output Return Loss dB Output Impedance Ω 75 Electric Control Equilibrium Range dB 0 ~10 Electric Control Attenuation Range dB 0 ~20 ≥ 16(47~550)MHz;≥ 14(550~862MHz) Generic Characteristics Operating Temperature ℃ -40 ~60 Relative Temperature % Max 95%No Condensation Power Dissipation VA ≤ 15 ★Special Notice: The performance parameters of this manual according to GY/T 143-2000 (Specifications and methods of measurement on AM optical transmitter and receiver used in CATV system) .We get it under the following testing environment. ★Testing Environment: Together with 10km standard optical fiber, optical passive attenuator and standard optical transmitter make the testing circuit .Set with 59 PAL-D analog TV channel signal at range of 550MHZ in the fix index loss of circuit, transmit digital TV signal at rang of 550MHZ~862MHZ,the electricity (8 MHZ bandwidth) digital signal is 10dB lower than analog signal of carrier electricity level. When the input of optical receiver is -1dBm, measure C/CTB,C/CSO,C/N. 3. Block Diagram VII. Reverse Optical Receiver Module 1. Summary Optic-Electric Convertion part of Reverse Optical Receiver Module is high sensitive PIN detector .RF Pre-amplifier is all GaAs MMIC circuit. All use SMT production process, and the professional RF electrical muffler with good RF muffler linear, equalization linear and high precision. Add advanced optical AGC control circuit. When input optical power turn from -10 to +1dBm, the output level and other indexes constant. There are four independent optical receiver components in each module .These components can receive 4 different independent road of return optical signal with independent adjustable level. 2. Technique Parameters Items Unit Technique Parameters Optical Input Power Rang dBm +1~ -10 Propose Use Range dBm 0 ~ -8 Nominal Optical Wavelength nm 1310、1550 Dual Window Optical Connector Type Return Loss SC/APC ≥45 dB Optical Fiber Type Single-mode Frequency Range MHz 5~65/200 Output Level dBμV ≥90(-7dBm when receive) Link Flatness dB ±0.75 Return Loss dB ≥16 Output Impedance Ω 75 Output Level Adjusting Range dB 0~10 RF Test Port dB -20 RF Output Level Stability dB Noise –to- power Dynamic Range dB Consumption ±0.5(-25℃~ +55℃) ≥15(NPR≥30 dB) Optical transmitter with DFB laser ≥10(NPR≥30 dB) Optical transmitter with FP laser W 25 Operating Temperature ℃ 0 ~ 45 Relative Temperature % Max 95%No Condensation Notice: 1. Flatness in Circuit and Noise Power Ratio Dynamic Range are indexes made up by Uplink Optical Transmitter and Uplink Optical Receiver. 2. The difference between RF Excited Power and Signal Modulation of Uplink Optical Transmitter may change the Output Power .So these given Output Level indexes are for your reference only. 3. Block Diagram VIII. Power Module 1. Summary High reliability PWM circuit with high efficiency energy conversion, low heating power, small harmonics interference, hot backup and hot swap operation, is in the Power Module .。 2. Technique Parameters Input Parameters Output Parameters Generic Characteristics Input Level Maximum Current AC 180V ~250V ( 50Hz ) 2A Output Voltage Maximum Current AC Ripple Voltage Stability +24V 8A 50mVP-P +5V 13A 50mVP-P -5V 11A 50mVP-P ±1%(Load variation range:10%~100% , Voltage variation range:AC 180V ~ 250V。 ) Operating Temperature Storage Temperature -0℃ ~+45℃ -20℃ ~+65℃ Relative Temperature Max 95%No Condensation IX. Condition Monitoring Unit Intelligent Centralized Condition Monitoring Unit is in the WOS-3000 CATV Optical Fiber Communication System Platform .It select high-performance RISC microprocessors of PIC series whose internal circuit is an advanced ASIC design. There is also powerful and complete control software in it. So that the Monitoring Unit convenient, easy to expand upgrading, but also can automatically identify each module slot on the type and function. 1. Performance Characteristics Its intelligence level is high because it can automatically identify the module type and the function on slot; provide friendly interface to fully show humanism modern design of the industrial equipment. When the system under normal operation, the monitoring unit monitor the status of each equipment module parameters by circle inquiring. And the present state parameters are stored in the dynamic memory for inquire and invocation. When the equipment modules are out of work ,the microprocessor in the equipment modules report fault information to the main processor in the monitoring unit in time by breaking forcibly. Then the host processor issue alarm command to give an alarm after triggering the sound and light alarm system. When the system administrator is doing maintenance operations it can inquire about the last working condition parameters of each state, alarm information of system and fault content through Network Management Software or the touch keys of the front panel. It not only facilitate the system administrator’s routine maintenance work greatly, but also help system administrators locate the fault point in time to recovery system in less time when the system is out of work. 2. Main Monitoring Parameters 1550nm EDFA module: Input Optical Power, Output Optical Power, Pump Laser(Bias Current ,Purchase Cold Current); 1550nm Direct Optical Transmitter Module: RF Input Level, Output Optical Power, Laser(Bias Current ,Purchase Cold Current); 1310nm Forward Optical Transmitter Module: RF Input Level, Output Optical Power Laser(Bias Current ,Purchase Cold Current); Forward Optical Transmitter Module: Input Optical Power, Output RF Level; Reverse Optical Transmitter Module: Input Optical Power, Output RF Level; Optical Switching Module: Input Optical Power, Switching State; RF Switching Module: Input RF Level, Switching State; Power Module: Input Voltage, Output Voltage;