CN102045551A - Radio frequency optical fiber transmission optical workstation for two-way network transformation of cable television - Google Patents

Abstract

The invention relates to a radio frequency optical fiber transmission optical workstation for two-way network transformation of a cable television, which belongs to the field of the cable televisions. The radio frequency optical fiber transmission optical workstation comprises a wavelength division multiplexer, an optical module, a downlink signal optical automatic gain control circuit, a downlink signal amplification circuit, an uplink signal amplification circuit, a radio frequency switching control circuit, an uplink optical transmitter control circuit, a mixing circuit and a data collection circuit. The radio frequency optical fiber transmission optical workstation has the advantages of small noise convergence, high bandwidth, property of being in line with IP-lization, low transformation cost per household and high reliability, and is convenient for upgrading and expansion.

Description

Be used for the radio frequency Optical Fiber Transmission optical workstation that cable TV two-way network is transformed

Technical field

The present invention relates to a kind of radio frequency Optical Fiber Transmission (RFoG RF over glass) optical workstation that cable TV two-way network is transformed that is used for, belong to the cable TV technical field, especially the transformation of hybrid fiber coax bilateral network is a kind of based on cable TV transmitted in both directions equipment.

Background technology

China cable TV (CATV, Cable Television) never resembles from that day of being born and face the challenge like this and opportunity to develop today, the core business of cable TV faces the direct competitive of IPTV, direct broadcasting satellite, its user also no longer only is satisfied with the passive program of watching, has proposed diversified interaction entertainment requirement; The development of domestic Digital Television in recent years, brought unprecedented opportunity to develop for the broadcasting and TV system, the not just variation of TV programme transmission means that Digital Television is brought to the radio and TV operator, and provided brand-new interaction entertainment mode, this new interaction entertainment mode has fundamentally changed the traditional mode that the user has only passive acceptance to serve, can carry out interaction, brought brand-new market business opportunity (broadband, VOD, VOIP) to the radio and TV operator simultaneously, interactivity is the inevitable choice of cable television operators.And reality is most of cable TV network is unilateral network, can't carry interactive service, must be to the transformation of two-wayization of network implementation.

Both at home and abroad for traditional two-way high frequency cable (HFC) network, early stage for realizing broadband and two-way function, mainly based on North America cable TV modulator-demodulator product standard (DOCSIS), be that cable modem terminal system (CMS is set on the basis of hfc plant system configuration, Cable Modem Termination System), upconverter, Operation ﹠ Maintenance System server (Oss Server) and cable modem equipment such as (CM, Cable Modem) are implemented in transmission CATV signal and data communication service in the hfc plant.Though technical standard and product be comparative maturity all, because the complicated network structure, a large amount of optical nodes and radio frequency (RF) amplifier has increased the difficulty and the cost of network design, construction, maintenance greatly.This technology is except that the higher share of the more sparse North America DOCSIS standard access way occupation ratio of population distribution, in the Asia and other people are mouthful than the area of comparatively dense, the number of users of DOCSIS standard relatively seldom, this enforcement in several years of domestic radio and TV operator is indicating that also the DOCSIS standard is difficult to become the bidirectional rebuilding technology of main flow in China.Wherein:

CMTS: the data that are hfc plant insert local side apparatus, are the connection devices that data are transmitted in hfc plant, are mainly used in and finish forwarding of data in the data communication network, protocol processes and rf modulations demodulation function;

Upconverter: being arranged in CMTS, is the frequency conversion device of hfc plant, and the descending analog intermediate frequency signal that is mainly used in CMTS output is converted on arbitrary television channel of CATV;

Oss Server: be whole system and Network Management equipment, be used to provide system's operation required various service supports, as DHCP, TFTP, TOD, LOG service function etc. are provided for system;

CM: be connected with user terminal with hfc plant, be mainly used in data forwarding, protocol processes and the modulation function etc. finished between hfc plant and the user terminal.

But the CMTS technology can only be carried out data communication service in the hfc plant system, can not realize common telephone service etc., exists not enough on multi-service realizes.Simultaneously, use the CMTS technology in the hfc plant system, to carry out data communication service, also have following some technical problem:

1. noise collection effect: for most of cable television operators, upstream noise is a ubiquitous problem, especially low-frequency band (＜65MHz).Common this noise is by terminal box in electric motor, thunder and lightning, HAM, shortwave broadcasting even sunspot and the user family, imbed the cable quality in the wall, private connects non-standard component, situations such as all kinds of interface adhesive plaster of family connection line cause, it will destroy the transfer of data of data feedback channel (oppositely return path), so that reduce the user's communications quality, especially under real time business situations such as video or IP speech, noise jamming will cause transfer of data time-delay and shake, cause video image distortion or speech discontinuous.This has very high electrical connection quality coefficient with regard to requiring the coaxial fitting in the hfc plant, and maintenance and operation troubles get rid of the technical support that needs in the most of area of China in a short time also difficulty properly settle.

2. bandwidth is low: adopt CMTS to carry out bidirectional rebuilding, need optical receiver and amplifier are carried out bidirectional rebuilding (increasing the back emitted module, reverse amplification module), also need add equipment such as backlight receiver and upconverter.Its downlink transfer speed is 160 bps, and uplink speed is that share at 120M bps 100 families, and each household has only descending 1.6 bps and up 1.2M bps.Limitation is a little less than the CMTS equipment bag transfer capability pps up to ten thousand are only arranged generally, can't satisfy growing high broadband services demand.In addition, CMTS device data function is simple, simple medium access control sublayer agreement (MAC is only arranged, Media Access Control) learning management, the bridges forward ability, agreement (IP, the Internet Protocol) routing device that needs to interconnect between the external network is finished building of business platform.

3. not meeting IPization trend: CMTS and adopt many-valued quadrature amplitude modulation (MQAM) modulation system, is that the analog network and the network IPization of transmission radio-frequency carrier signal runs in the opposite direction with the ether networking in essence.

4. cost height per family: though that CMTS covers cost is low, the user need be equipped with CM and do broadband access and online, the price comparison height.The project up-front investment is big, need carry out bidirectional rebuilding to the transmission equipment in the existing hfc plant.After the userbase development, many users of CMTS share the 38M bandwidth, can not satisfy the use of a large number of users, and cost is still higher per family.

5. be not easy to upgrade expanding:, arrange 8 channels for general descending because the channel that interactive service takies is too much unsuitable.Because the corresponding relation of CMTS and optical sender, if each optical node is served 100 families, two-way 2 channels (38Mdps was shared at 50 families when descending employing 64QAM modulated) that respectively take, 1 optical sender can only be with 4 optical nodes, can only select the 6mW optical sender for use like this.If 1 sub-headend is served 20,000 families, just need 50 optical senders and 50 8 channel C MTS, 20,000 CM.This mode headend equipment enormous amount, the maintenance management complexity causes great pressure to the upgrade expanding of rear end IP metropolitan area network.

Summary of the invention

The objective of the invention is to provide a kind of radio frequency Optical Fiber Transmission optical workstation that cable TV two-way network is transformed that is used for, its noise collection effect is little, and the bandwidth height that provides meets IPization, and improvement cost is lower per family, is convenient to upgrade expanding, the reliability height.

The objective of the invention is to reach like this, a kind of radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation, comprise wavelength division multiplexer, 4 wavelength optical signals transmitting in 1 optical fiber are separated, one the tunnel gives optical module, and the EPON optical signal interface is given on another road; Optical module, optical module is given downstream signal light automatic gain control circuit one road light signal, and another road light signal is given up optical sender control circuit; Downstream signal light automatic gain control circuit is converted to the constant signal of telecommunication to the downlink optical signal of Headend, by downstream signal light automatic gain control control circuit, exports the constant signal of telecommunication and gives the downstream signal amplifying circuit; The downstream signal amplifying circuit exporting to hybrid circuit after the constant signal of telecommunication amplification, is given data acquisition circuit the data-signal that needs are gathered; The upward signal amplifying circuit is given the radio-frequency (RF) switch control circuit uplink electrical signals of hybrid circuit output after adjusting, give data acquisition circuit the data-signal that needs are gathered; The radio-frequency (RF) switch control circuit is the opening and closing of the signal of up amplifying circuit output through the acquisition process control signal; Up optical sender control circuit is the electrical signal conversion of radio-frequency (RF) switch control circuit output a light signal, gives data acquisition circuit the data-signal that needs are gathered; Hybrid circuit being transferred to each cable TV subscriber by hybrid fiber coax after upward signal amplifying circuit and the downstream signal amplifying circuit division of signal frequency, is given data acquisition circuit the data-signal that needs are gathered; Data acquisition circuit is given I class or II class network management responder dateout after the major parameter sampling processing in the equipment.

Downstream signal light automatic gain control circuit of the present invention comprises inductance L 1～L6, capacitor C 1～C27, double diode D1, D2, voltage-stabiliser tube D3, diode D4～D13, light-emitting diode D14～D23, resistance R 1～R57, amplifier tube A1, A2, signal coupler Z1, amplifier LM1～LM3 and attenuator ATT1, amplifier tube A1 wherein, A2 is F226,1 pin of the descending optical receiver in the optical module connects an end of inductance L 2, inductance L 2 another termination signal coupler Z1 inputs, one end of signal coupler Z1 output connecting resistance R4 and capacitor C 7, capacitor C 7 other end ground connection, resistance R 4 other end connecting resistance R3, one end of R5 and capacitor C 5, resistance R 3, capacitor C 5 other end ground connection, resistance R 5 other ends, capacitor C 6, one termination direct voltage+24V of C11 and resistance R 7, capacitor C 6, C11 other end ground connection, resistance R 7 other end connecting resistance R10, R11, one end of R12 and capacitor C 14, resistance R 11, capacitor C 14 other end ground connection, resistance R 10 another termination capacitor C 12, one end of resistance R 8 and 1 pin of double diode D1, capacitor C 12, resistance R 8 other end ground connection, resistance R 12 another termination capacitor C 15, one end of resistance R 13 and 1 pin of double diode D2, capacitor C 15, resistance R 13 other end ground connection, signal coupler Z1 mixes the end of termination capacitor C3,1 pin of capacitor C 3 another termination amplifier tube A1 and an end of capacitor C 4, capacitor C 4 other end ground connection, 3 of amplifier tube A1,4 pin ground connection, 2 pin of amplifier tube A1 connect an end of capacitor C 8 and inductance L 4, an end of inductance L 4 another termination capacitor C 9 and resistance R 6, capacitor C 9 other end ground connection, one end of resistance R 6 another termination direct voltage+8V and capacitor C 10, capacitor C 10 other end ground connection, an end of capacitor C 8 another termination inductance L 3, the end of inductance L 3 other end connecting resistance R9 and 3 pin of double diode D1, resistance R 9 other end ground connection, 2 pin of double diode D1 connect 2 pin of double diode D2 and an end of inductance L 5, and 3 pin of double diode D2 connect an end of capacitor C 16 and resistance R 14, resistance R 14 other end ground connection, 1 pin of capacitor C 16 another termination amplifier tube A2,3 of amplifier tube A2,4 pin ground connection, 2 pin of amplifier tube A2 connect an end of capacitor C 19 and inductance L 6, the input of capacitor C 19 another termination attenuator ATT1, the output output of ATT1 connects the downstream signal amplifying circuit, another a termination capacitor C 18 of inductance L 6 and an end of resistance R 15, capacitor C 18 other end ground connection, resistance R 15 another termination direct voltage+8V, the end of capacitor C 20 positive poles and C21, capacitor C 20 negative poles and C21 other end ground connection, an end of inductance L 5 another termination capacitor C 13, the positive pole of capacitor C 17 and A point, the other end of capacitor C 13, the minus earth of capacitor C 17, the A point connects an end of capacitor C 22, the end of the negative pole of voltage-stabiliser tube D3 and resistance R 16～R26, the plus earth of the other end of capacitor C 22 and voltage-stabiliser tube D3, an end of resistance R 16 another termination capacitor C 23, capacitor C 23 other end ground connection, resistance R 17～R26 other end is the end of connecting resistance R27～R36 respectively, resistance R 27～R36 other end connects the negative pole of diode D4～D13 respectively, and the positive pole of diode D4 connects 8 pin of amplifier LM3 and the positive pole of light-emitting diode D14, and the positive pole of diode D5 connects 14 pin of amplifier LM3 and the positive pole of light-emitting diode D15, the positive pole of diode D6 connects 8 pin of amplifier LM2 and the positive pole of light-emitting diode D16, the positive pole of diode D7 connects 14 pin of amplifier LM2 and the positive pole of light-emitting diode D17, and the positive pole of diode D8 connects 1 pin of amplifier LM1 and the positive pole of light-emitting diode D18, and the positive pole of diode D9 connects 7 pin of amplifier LM3 and the positive pole of light-emitting diode D19, the positive pole of diode D10 connects 1 pin of amplifier LM3 and the positive pole of light-emitting diode D20, the positive pole of diode D11 connects 7 pin of amplifier LM2 and the positive pole of light-emitting diode D21, and the positive pole of diode D12 connects 1 pin of amplifier LM2 and the positive pole of light-emitting diode D22, and the positive pole of diode D13 connects 7 pin of amplifier LM1 and the positive pole of light-emitting diode D23, the negative pole of light-emitting diode D14～D23 is the end of connecting resistance R37～R46 respectively, another termination direct voltage+8V of resistance R 37～R46 and capacitor C 24, the end of C25, capacitor C 24, C25 other end ground connection, the 3 pin connecting resistance R47 of amplifier LM1, the end of R48,12 pin of resistance R 48 another termination amplifier LM2, one end of resistance R 49,10 pin of resistance R 49 another termination amplifier LM2, one end of resistance R 50,12 pin of resistance R 50 another termination amplifier LM3, one end of resistance R 51,10 pin of resistance R 51 another termination amplifier LM3, one end of resistance R 52, resistance R 52 another termination direct voltage+24V, one end of capacitor C 26, capacitor C 26 other end ground connection, 8 pin of amplifier LM1,4 pin of LM2,4 pin of LM3 meet direct voltage+24V, 5 pin of resistance R 47 another termination amplifier LM1, one end of resistance R 53,3 pin of resistance R 53 another termination amplifier LM2, one end of resistance R 54,5 pin of resistance R 54 another termination amplifier LM2, one end of resistance R 55,3 pin of resistance R 55 another termination amplifier LM3, one end of resistance R 56,5 pin of resistance R 56 another termination amplifier LM3, one end of resistance R 57, resistance R 57 other end ground connection, 4 pin of amplifier LM1,11 pin of LM2, the 11 pin ground connection of LM3,3 pin ground connection of the descending optical receiver in the optical module, 2 pin of descending optical receiver connect an end of inductance L 1, inductance L 1 other end connecting resistance R1, R2, one end of capacitor C 1, resistance R 2, capacitor C 1 other end ground connection, resistance R 1 another termination capacitor C 2 and B point, the B point connects an end of capacitor C 27,2 and 6 pin of amplifier LM1,2 of LM2,6,9, with 13 pin, 2 of LM3,6,9 and 13 pin, capacitor C 2, C27 other end ground connection.

Downstream signal amplifying circuit of the present invention comprises inductance 2L1～2L5, signal coupler 2Z1～2Z3, adjustable potentiometer 2Rt1, diode 2D1～2D3, electric capacity 2C1～2C13, resistance 2R1～2R5, equalizer EQ1, attenuator ATT2, amplifier tube 2A1,2A2 and amplification module 2A3, amplifier tube 2A1 wherein, 2A2 is F226, amplification module 2A3 is MC-7884S, light agc circuit signal is input to the input of signal coupler 2Z1, another input end grounding of signal coupler 2Z1, the end of the output termination capacitor 2C3 of signal coupler 2Z1,1 pin of another termination amplifier tube 2A1 of electric capacity 2C3,3 of amplifier tube 2A1,4 pin ground connection, 2 pin of amplifier tube F2A1 meet inductance 2L1, the end of electric capacity 2C4, the other end connecting resistance 2R1 of inductance 2L1, the end of electric capacity 2C2, the other end ground connection of electric capacity 2C2, the other end of resistance 2R1, termination direct voltage+the 8V of electric capacity 2C1, electric capacity 2C1 other end ground connection, the input of another termination signal coupler 2Z2 of electric capacity 2C4, the end of signal coupler 2Z1 output termination capacitor 2C5,1 pin of another termination amplifier tube F226 2A2 of electric capacity 2C5,3 of amplifier tube 2A2,4 pin ground connection, 2 pin of amplifier tube 2A2 meet electric capacity 2C6, the end of inductance 2L2, the other end connecting resistance 2R2 of inductance 2L2, the end of electric capacity 2C9, the other end ground connection of electric capacity 2C9, the resistance 2R2 other end, the positive pole of electric capacity 2C7, termination direct voltage+the 8V of 2C8, the negative pole of electric capacity 2C7, the other end ground connection of 2C8, another input of another termination signal coupler 2Z2 of electric capacity 2C6, the primary input end of the output termination signal coupler 2Z3 of signal coupler 2Z2, the end of resistance 2R3, another output head grounding of signal coupler 2Z2,1 pin of another termination adjustable potentiometer 2Rt1 of resistance 2R3,2 of adjustable potentiometer 2Rt1,3 pin connect the end of inductance 2L3, the end of another termination capacitor 2C10 of inductance 2L3, the other end ground connection of electric capacity 2C10, another primary input end ground connection of signal coupler 2Z3, the end of signal coupler 2Z3 coupling termination capacitor 2C11, the other end ground connection of electric capacity 2C11, signal coupler 2Z3 one output connecting resistance 2R4, the end of equalizer EQ1, the other end of another output connecting resistance of signal coupler 2Z3 2R4, the end of another termination attenuator ATT2 of equalizer EQ1,1 pin of another termination amplification module 2A3 of attenuator ATT2,2 of amplification module 2A3,3,7,8 pin ground connection, 5 pin of amplification module 2A3 connect the negative pole of diode 2D3, electric capacity 2C12, the end of inductance 2L4, the positive pole of diode 2D3, the other end ground connection of electric capacity 2C12, the other end of inductance 2L4, termination direct voltage+the 24V of electric capacity 2C13, electric capacity 2C13 other end ground connection, the 9 pin connecting resistance 2R5 of amplification module 2A3, the end of inductance 2L5, another terminating diode 2D2 negative pole of resistance 2R5, the 2D1 positive pole, diode 2D2 positive pole, the 2D1 minus earth, another termination hybrid circuit of inductance 2L5.

Upward signal amplifying circuit of the present invention comprises inductance 3L1～3L3, signal coupler 3Z1～3Z4, electric capacity 3C1～3C8, resistance 3R1～3R11, first, second triple gate switch, low pass filter, attenuator RATT1, RATT2, equalizer REQ123﹠amp; 4, amplification module 3A1 and monitoring mouthful R.IN/TEST, R.OUT/TEST, wherein amplification module 3A1 is R-235, the hybrid circuit output signal is to the end of attenuator RATT1, the primary input end of another termination signal coupler 3Z1 of attenuator RATT1, signal coupler 3Z1 coupled end ground connection, the termination signal coupler 3Z2 of signal coupler 3Z1 branch one input, another input end grounding of signal coupler 3Z2, the end of signal coupler 3Z2 coupling termination capacitor 3C1, electric capacity 3C1 other end ground connection, signal coupler 3Z2 two outputs are connecting resistance 3R1 two ends respectively, resistance 3R1 one termination monitoring mouthful R.IN/TEST, the resistance 3R1 other end connects capable signal incoming level TEST2, one end of an output termination first triple gate switch of signal coupler 3Z1, the end of another output connecting resistance of signal coupler 3Z1 3R2, resistance 3R2 other end ground connection, the end of the first triple gate switch other end connecting resistance 3R3, the input of signal coupler 3Z3, another input connecting resistance of signal coupler 3Z3 3R3 other end, the end of signal coupler 3Z3 coupling termination capacitor 3C2, electric capacity 3C2 other end ground connection, one end of the signal coupler 3Z3 one output termination second triple gate switch, another output head grounding of signal coupler 3Z3, one end of second another termination low pass filter of triple gate switch, the end of another termination capacitor of low pass filter 3C3,1 pin of another termination amplification module of electric capacity 3C3 3A1,2 of amplification module 3A1,3,7,8 pin ground connection, 5 pin of amplification module 3A1 meet inductance 3L1, the end of electric capacity 3C4, electric capacity 3C4 other end ground connection, the inductance 3L1 other end, electric capacity 3C5, termination direct voltage+the 24V of 3C6, electric capacity 3C5,3C6 other end ground connection, the 9 pin connecting resistance 3R4 of amplification module 3A1,3R6, the end of electric capacity 3C7, resistance 3R6 other end connecting resistance 3R5, the end of 3R7, another termination inductance of resistance 3R7 3L3, the end of electric capacity 3C8, inductance 3L3, electric capacity 3C8 other end ground connection, the end of another termination inductance of electric capacity 3C7 3L2, inductance 3L2 other end connecting resistance 3R4, the other end of 3R5, attenuator RATT2 input, attenuator RATT2 output termination equalizer REQ123﹠amp; An end of 4, equalizer REQ123﹠amp; 4 another termination signal coupler 3Z4 primary input ends, signal coupler 3Z4 one output termination radio-frequency (RF) switch control circuit, signal coupler 3Z4 coupled end ground connection, the end of signal coupler 3Z4 branch end connecting resistance 3R9,3R10, resistance 3R9 other end ground connection, the end of resistance 3R10 other end connecting resistance 3R8, monitoring mouthful R.OUT/TEST, resistance 3R8 other end ground connection, the end of another output connecting resistance of signal coupler 3Z4 3R11, resistance 3R11 other end ground connection.

Radio-frequency (RF) switch control circuit of the present invention comprises radio-frequency relay 6J1, signal coupler 6Z1, electric capacity 6C1～6C16, resistance 6R1～6R23, LED, controllable silicon 6D7, diode 6D1～6D6, chip U1～U7, its chips 6U1 is UC3842,6U2 is CD4528,6U3 is DAC0800,6U4-6U6 is LF356N, 6U7 is SE555, upward signal amplifying circuit output signal connects the input of signal coupler 6Z1, the signal input part of the main output termination radio-frequency relay 6J1 of signal coupler 6Z1, the signal output part of radio-frequency relay 6J1 outputs to up optical sender control circuit to signal, the centre cap ground connection of signal coupler 6Z1, main split's output X point of signal coupler 6Z1 connects the end of electric capacity 6C3, the end of the output connecting resistance 6R23 of another branch of signal coupler 6Z1, resistance 6R23 other end ground connection, 5 of another chip termination 6U3 of electric capacity 6C3,6,7,8,9,10,11,12 pin, 13 pin of chip 6U3 meet electric capacity 6C4, an end and the voltage-5V of 6C6, electric capacity 6C4 other end ground connection, 16 pin of another chip termination 6U3 of electric capacity 6C6, the 1 pin ground connection of chip 6U3, voltage+5V meets electric capacity 6C5,6C7, the end of resistance 6R7,13 pin of chip 6U3 and chip 6U4,7 pin of 6U5, electric capacity 6C5, the other end ground connection of 6C7, the end of the 14 pin connecting resistance 6R5 of chip 6U3,3 pin of another chip termination 6U7 of resistance 6R5, the end of resistance 6R3 and LED positive pole, the LED minus earth, the other end of voltage+5V connecting resistance 6R3,4 pin of chip 6U7,8 pin, the end of resistance 6R2,7 pin of another chip termination of resistance 6R2 6U7, the end of resistance 6R1,6 pin of another chip termination 6U7 of resistance 6R1,2 pin, the end of electric capacity 6C1, the output voltage BAIS of up optical sender control circuit, 5 pin of chip 6U7 connect the end of electric capacity 6C2, electric capacity 6C1, the other end of 6C2, the 1 pin ground connection of chip 6U7, the end of the 15 pin connecting resistance 6R4 of chip 6U3, the end of the 2 pin connecting resistance 6R6 of chip 6U3,3 pin of chip 6U4, resistance 6R4,6R6 other end ground connection, the end of the 4 pin connecting resistance 6R7 of chip 6U3,2 pin of chip 6U4, the other end of resistance 6R7, electric capacity 3C5, the end of 3C7,13 pin of chip 6U3, chip 6U4,7 pin of 6U5 meet voltage+5V, 4 pin of chip 6U4 meet voltage-5V, the end of the 6 pin connecting resistance 6R8 of chip 6U4,3 pin of another chip termination 6U5 of resistance 6R8,3 pin of chip 6U6, electric capacity 6C5,6C7 other end ground connection, chip 6U4,6U5,4 pin of 6U6 meet voltage-5V, the end of the 2 pin connecting resistance 6R9 of chip 6U5, diode 6D2 positive pole, diode 6D2 negative pole connects 6 pin of chip 6U5, diode 6D1 positive pole, the other end of diode 6D1 negative pole connecting resistance 6R9, the end of resistance 6R10, the end of electric capacity 6C8, voltage+5V connects 7 pin of chip 6U6, the end of the 2 pin connecting resistance 6R11 of chip 6U6, diode 6D4 positive pole, diode 6D4 negative pole connects 6 pin of chip 6U6, diode 6D3 negative pole, the anodal connecting resistance 6R11 of the diode 6D3 other end, resistance 6R12, the end of electric capacity 6C9, electric capacity 6C8,6C9 other end ground connection, the resistance 6R12 other end connecting resistance 6R10 other end and Y point, Y point connecting resistance 6R14, the end of electric capacity 6C10, diode 6D5 negative pole, the end of electric capacity 6C10 other end connecting resistance 6R16,4 pin of chip 6U1, resistance 6R14 other end connecting resistance 6R13, the end of 6R15,2 pin of chip 6U1, resistance 6R15,6R16 other end ground connection, 8 pin of another chip termination of resistance 6R13 6U1, diode 6D5 positive pole connects 1 pin of chip 6U1, voltage+5V connects the end of electric capacity 6C11,7 pin of chip 6U1,3 pin of chip 6U1 meet electric capacity 6C12, the end of resistance 6R17, electric capacity 6C11, the 6C12 other end, the 5 pin ground connection of chip 6U1, resistance 6R17 other end connecting resistance 6R18,6R19, the end of electric capacity 6C13, diode 6D6 positive pole, 5 pin of chip 6U2, resistance 6R18, the electric capacity 6C13 other end, 1 of chip 6U2,4,8,12 pin ground connection, 3 pin of another chip termination of resistance 6R19 6U2, diode 6D6 negative pole, voltage+5V connect 13 pin of chip 6U2,16 pin, resistance 6R20,6R22, one end of radio-frequency relay 6J1 coil, 2 pin of another chip termination of resistance 6R20 6U2, the end of electric capacity 6C14,6 of chip 6U2,11 pin connect, 14 pin of another chip termination of resistance 6R21 6U2, the end of electric capacity 6C15,15 pin of another chip termination of electric capacity 6C15 6U2, the end of the 10 pin connecting resistance 6R22 of chip 6U2, another termination capacitor of resistance 6R22 6C16, the control utmost point of controllable silicon 6D7, electric capacity 6C14,6C16, controllable silicon 6D7 minus earth, controllable silicon 6D7 positive pole connect the radio-frequency relay 6J1 coil other end.

Up optical sender control circuit of the present invention comprises electric capacity 1C1～1C10, resistance 1R1～1R22, light-emitting diode 1D1,1D2, controllable silicon 1D3, diode 1D4,1D5, triode 1V1～1V3, adjustable potentiometer 1Rt1～1Rt3 and amplifier 1LM1,1LM2, radio-frequency (RF) switch control circuit output signal connects diode 1D4 positive pole, the 1D5 negative pole, the end of resistance 1R21, diode 1D4 negative pole, 1D5 plus earth, the end of another termination capacitor of resistance 1R21 1C10, the electric capacity 1C10 other end connects the negative pole of capable optical sender LD, the end of inductance 1L1, the plus earth of up optical sender LD, the end of another termination capacitor of inductance 1L1 1C9, the collector electrode of triode 1V2, electric capacity 1C9 other end ground connection, the emitter connecting resistance 1R15 of triode 1V2, the end of 1R17, resistance 1R15 other end connecting resistance 1R14, the end of 1R18, the negative pole of electric capacity 1C6, the plus earth of electric capacity 1C6,3 pin of another termination amplifier of resistance 1R14 1LM1, the end of resistance 1R13,2 pin of another termination amplifier of resistance 1R13 1LM1, voltage BAIS, voltage BAIS is connected with the voltage BAIS of data acquisition circuit, 4 pin of another termination amplifier of resistance 1R17 1LM1, the end of resistance 1R16, resistance 1R16 other end ground connection, the base stage of triode 1V2 connects the emitter of triode 1V3, the end of resistance 1R2,8 pin of another termination amplifier of resistance 1R2 1LM2, the end of electric capacity 1C3,7 pin of another termination amplifier 1LM2 of electric capacity 1C3, the end of resistance 1R1,2 pin of another termination amplifier of resistance 1R1 1LM2, resistance 1R3, the end of 1R4,1 pin of another termination adjustable potentiometer of electric capacity 1R3 1Rt1,3 pin of adjustable potentiometer 1Rt1 connect 3 pin of amplifier 1LM2, the end of the 2 pin connecting resistance 1R8 of adjustable potentiometer 1Rt1, the end of resistance 1R8 other end connecting resistance 1R9, the negative pole of up optical sender PD in the optical module, the end of resistance 1R9 other end connecting resistance 1R10,4 pin of another termination amplifier of resistance 1R10 1LM2, the end of the anodal connecting resistance 1R22 of upstream transmitter PD in the optical module, electric capacity 1C4 negative pole, electric capacity 1C4 plus earth, the other end of resistance 1R22 other end connecting resistance 1R18, electric capacity 1C5, the end of 1C7,1 pin of adjustable potentiometer 1Rt3, electric capacity 1C5,1C7 other end ground connection, the end of the 2 pin connecting resistance 1R19 of adjustable potentiometer 1Rt3, resistance 1R19 other end ground connection, 3 pin of adjustable potentiometer 1Rt3 connect the base stage of triode 1V3, the end of electric capacity 1C8, another termination of electric capacity 1C8 direct voltage-5V, the collector electrode of triode 1V3,6 pin of another termination amplifier of resistance 1R4 1LM1, the 7 pin connecting resistance 1R5 of amplifier 1LM1, the end of 1R7, resistance 1R7 other end ground connection, 8 pin of another termination amplifier of resistance 1R5 1LM1, the end of resistance 1R6, voltage 1V/mW, the base stage of another termination triode of resistance 1R6 1V1, the grounded emitter of triode 1V1, the negative pole of the collector electrode sending and receiving optical diode 1D1 of triode 1V1, the end of the anodal connecting resistance 1R11 of light-emitting diode 1D1, another termination of resistance 1R11 direct voltage+5V, the end of resistance 1R12,1 of another termination controllable silicon of resistance 1R12 1D3,2 pin, 2 pin of adjustable potentiometer 1Rt2,3 pin of controllable silicon 1D3, the 1 pin ground connection of adjustable potentiometer 1Rt2,3 pin of adjustable potentiometer 1Rt2 connect 6 pin of amplifier 1LM2, the negative pole of direct voltage-5V sending and receiving optical diode 1D2, the end of the anodal connecting resistance 1R20 of light-emitting diode 1D2, resistance 1R20 other end ground connection, amplifier 1LM1,1 pin of 1LM2 meets direct voltage+5V, the end of electric capacity 1C1, electric capacity 1C1 other end ground connection, amplifier 1LM1,5 pin of 1LM2 meet direct voltage-5V, the end of electric capacity 1C2, electric capacity 1C2 other end ground connection.

Hybrid circuit of the present invention comprises Wiring port OUT1, OUT2, AC60V/IN, OUT/TEST, discharge tube 4VD1～4VD3, signal coupler 4Z1,4Z2, inductance 4L1,4L2, overcurrent inserted sheet CP1, CP2, electric capacity 4C1～4C14, resistance 4R1,4R2,4R3, distribution branch plug-in unit FZ/FP1, duplexer filter FLT1 and Switching Power Supply, downstream signal amplifying circuit output signal is to the high go side of duplexer filter FLT1, the low go side output of duplexer filter FLT1 upward signal is to the upward signal amplifying circuit, duplexer filter FLT1 mixes termination distribution branch plug-in unit FZ/FP1 input, the end of distribution branch plug-in unit FZ/FP1 one output termination capacitor 4C2, signal coupler 4Z1 primary input end, electric capacity 4C2 other end ground connection, the end of signal coupler 4Z1 one output termination capacitor 4C1, another termination discharge tube of electric capacity 4C1 4VD1, the end of inductance 4L1, Wiring port OUT1, discharge tube 4VD1 other end ground connection, Wiring port OUT1 output downstream signal is to hfc plant, signal coupler 4Z1 coupled end ground connection, the end of another output connecting resistance of signal coupler 4Z1 4R1, resistance 4R1 other end ground connection, the input of the termination signal coupler 4Z2 of signal coupler 4Z1 branch, another input end grounding of signal coupler 4Z2, the cry and shout end of 4Z2 coupling termination capacitor 4C5 of signal coupling, electric capacity 4C5 other end ground connection, signal coupler 4Z2 two outputs are connecting resistance 4R2 two ends respectively, resistance 4R2 one termination downstream signal output level TEST1, another termination Wiring port OUT/TEST of resistance 4R2, another output termination capacitor of distribution branch plug-in unit FZ/FP1 4C3, the end of 4C4, electric capacity 4C3 other end ground connection, another termination discharge tube of electric capacity 4C4 4VD2, the end of inductance 4L2 and Wiring port OUT2, discharge tube 4VD2 other end ground connection, Wiring port OUT2 output downstream signal is to hfc plant, charger AC60V meets Wiring port AC60V/IN, Wiring port AC60V/IN meets discharge tube 4VD3, electric capacity 4C13,4C14,4C12,4C11,4C9,4C8,4C7, overcurrent inserted sheet CP2, the end of CP1, Switching Power Supply AC60V mouth, discharge tube 4VD3, electric capacity 4C13,4C14,4C12,4C11,4C9,4C8, the 4C7 other end, Switching Power Supply ground connection mouth ground connection, the other end of another termination inductance of overcurrent inserted sheet CP2 4L2, the end of electric capacity 4C10, electric capacity 4C10 other end ground connection, the other end of another termination inductance of overcurrent inserted sheet CP1 4L1, the end of electric capacity 4C6, electric capacity 4C6 other end ground connection, Switching Power Supply output dc voltage+24V, + 8V, + 5V,-5V uses for each circuit.

Data acquisition circuit of the present invention comprises electric capacity 5C1～5C8, resistance 5R1～5R36, amplifier 5LM1～5LM6, diode 5D1 and connector CZ1, direct voltage+5V, + 8V, + 24V is connecting resistance 5R17 respectively, 5R19, the end of 5R22, resistance 5R17 other end connecting resistance 5R13, the end of 5R18, resistance 5R18 other end ground connection, 2 pin of resistance 5R13 other end connecting connector CZ1, resistance 5R19 other end connecting resistance 5R14, the end of 5R20, resistance 5R20 other end ground connection, 4 pin of resistance 5R14 other end connecting connector CZ1, resistance 5R22 other end connecting resistance 5R15, the end of 5R21, resistance 5R21 other end ground connection, 6 pin of resistance 5R15 other end connecting connector CZ1, charger AC60V connects diode 5D1 positive pole, the end of diode 5D1 negative pole connecting resistance 5R24, resistance 5R24 other end connecting resistance 5R16, the end of 5R23, resistance 5R23 other end ground connection, 8 pin of resistance 5R16 other end connecting connector CZ1, voltage BAIS connects 3 pin of amplifier 5LM6, the end of electric capacity 5C7, the electric capacity 5C7 other end, the 4 pin ground connection of amplifier 5LM6, the end of the 1 pin connecting resistance 5R25 of amplifier 5LM6 and 12 pin of connector CZ1 also are connected with voltage BAIS in the up optical sender control circuit, circuit, 2 pin of another termination amplifier of resistance 5R25 5LM6 and the end of resistance 5R26, resistance 5R26 other end ground connection, the end of voltage-5V connecting resistance 5R28,6 pin of another termination amplifier of resistance 5R28 5LM6, the end of resistance 5R27,7 pin of another termination amplifier of resistance 5R27 5LM6,10 pin of connector CZ1,8 pin of amplifier 5LM6 meet voltage+5V, the end of electric capacity 5C8,5 pin of amplifier 5LM6, electric capacity 5C8 other end ground connection, voltage+24V connects 8 pin of amplifier 5LM5, the end of resistance 5R33,5 pin of another termination amplifier of resistance 5R33 5LM5, the end of resistance 5R36, resistance 5R36 other end ground connection, voltage+24V/1 connecting resistance 5R34, the end of 5R35, resistance 5R35 other end ground connection, 6 pin of another termination amplifier of resistance 5R34 5LM5, the end of resistance 5R32,3 of another termination amplifier of resistance 5R32 5LM5,7 pin, the 4 pin ground connection of amplifier 5LM5, the 1 pin connecting resistance 5R29 of amplifier 5LM5, the end of 5R30,14 pin of resistance 5R29 other end connecting connector CZ1,2 pin of another termination amplifier of resistance 5R30 5LM5, the end of resistance 5R31, resistance 5R31 other end ground connection, the B point connects 3 pin of amplifier 5LM1, the end of electric capacity 5C1, the electric capacity 5C1 other end, the 4 pin ground connection of amplifier 5LM1, the end of the 1 pin connecting resistance 5R1 of amplifier 5LM1,1 pin of connector CZ1,2 pin of another termination amplifier of resistance 5R1 5LM1, the end of resistance 5R2, downstream signal output level TEST1 connects 4 pin of amplifier 5LM3, the end of resistance 5R3, the resistance 5R2 other end, the resistance 5R3 other end, 2 of amplifier 5LM3,5 pin ground connection, the end of the 1 pin connecting resistance 5R4 of amplifier 5LM3, resistance 5R4 other end ground connection, 7 pin of amplifier 5LM3 are unsettled, 3 of amplifier 5LM3,8 pin meet voltage+24V, the end of electric capacity 5C4, electric capacity 5C4 other end ground connection, 6 pin of amplifier 5LM3 connect 5 pin of amplifier 5LM1,8 pin of amplifier 5LM1 meet voltage+5V, the end of electric capacity 5C3, electric capacity 5C3 other end ground connection, the end of the 7 pin connecting resistance 5R9 of amplifier 5LM1,3 pin of connector CZ1,6 pin of another termination amplifier of resistance 5R9 5LM1, the end of resistance 5R10, resistance 5R10 other end ground connection, voltage 1V/mW connects 3 pin of amplifier 5LM2, the end of electric capacity 5C2, the electric capacity 5C2 other end, the 4 pin ground connection of amplifier 5LM2, the end of the 1 pin connecting resistance 5R5 of amplifier 5LM2,5 pin of connector CZ1,2 pin of another termination amplifier of resistance 5R5 5LM2, the end of resistance 5R6, resistance 5R6 other end ground connection, upward signal incoming level TEST2 connects 4 pin of amplifier 5LM4, the end of resistance 5R7, the resistance 5R7 other end, 2 of amplifier 5LM4,5 pin ground connection, the end of the 1 pin connecting resistance 5R8 of amplifier 5LM4, resistance 5R8 other end ground connection, 7 pin of amplifier 5LM4 are unsettled, voltage+24V meets 3 of amplifier 5LM4,8 pin, the end of electric capacity 5C6, electric capacity 5C6 other end ground connection, 6 pin of amplifier 5LM4 connect 5 pin of amplifier 5LM2, voltage+5V connects 8 pin of amplifier 5LM2,8 pin of connector CZ1, the end of electric capacity 5C5, electric capacity 5C5 other end ground connection, the end of the 7 pin connecting resistance 5R11 of amplifier 5LM2,7 pin of connector CZ1,6 pin of another termination amplifier of resistance 5R11 5LM2, the end of resistance 5R12, resistance 5R12 other end ground connection, 9 of connector CZ1,11 pin are unsettled, 15 of connector CZ1,16 pin ground connection, connector CZ1 is connected with I class or II class network management responder.

The RFoG optical workstation that is used for the cable TV HFC network rebuilding of the present invention is that transmission is the Access Network solution of basic business with RF on optical fiber.Utilize existing headend equipment and ustomer premises access equipment (top box of digital machine, Cable Modem etc.) fully and utilize EPON (PON) structure to replace the FTTX network of hfc plant cable, realize network bi-directionalization, its network configuration is identical with PON (EPON) structure, can be smoothly transitted into EPON GPON DPON etc.The RFoG optical workstation is a transferring voice, video and based on the data of DOCSIS on optical fiber, downlink bandwidth reaches 1G, owing to adopt unique " burst " technology at backward channel, greatly improve noiseproof feature, whole backward channel can both be used for developing value-added services, not only can support the DOCSIS standard, can also support 64QAM, greatly increase the backward channel bandwidth.The uplink and downlink transmission both can utilize different optical wavelength to share same optical fiber, also can adopt two fibres to transmit.Network configuration is simple, transparent transmission fully, and active equipment is few on the circuit, improves network reliability and cuts operating costs.The full-service that satisfies operator inserts, and ustomer premises access equipment can roll and drops into along with user's increase, can install as required, invest, and recovery of the capital has very strong predictable.

Description of drawings

Fig. 1 is a theory diagram of the present invention.

Fig. 2 is wavelength division multiplexer and optical module catenation principle figure.

Fig. 3 is optical module internal structure and wavelength division multiplexer catenation principle figure.

Fig. 4 is a downstream signal light automatic gain control circuit schematic diagram.

Fig. 5 is a downstream signal amplifying circuit schematic diagram.

Fig. 6 is a upward signal amplifying circuit schematic diagram.

Fig. 7 is a radio-frequency (RF) switch control circuit schematic diagram.

Fig. 8 is up optical sender control circuit schematic diagram.

Fig. 9 is the hybrid circuit schematic diagram.

Figure 10 is the data acquisition circuit schematic diagram.

Embodiment

Referring to Fig. 2: it is that separate optical signals Headend is come out that wavelength division multiplexer is connected with optical module, one tunnel downstream wavelength 1550nm is connected optical module with up wavelength 1590nm light signal, and another road downstream wavelength 1490nm is connected the PON optical signal interface with up wavelength 1310nm light signal.

Referring to Fig. 3: optical module is made up of descending optical receiver and up optical sender, optical module is JZPI-PL, optical module is connected the descending optical receiver of downstream wavelength 1550nm optical signal transmission being given optical module with wavelength division multiplexer, the up optical sender of optical module sends to wavelength division multiplexer to the 1590nm light signal.

Referring to Fig. 4: downstream signal light automatic gain control circuit be in certain light receiving power scope (7～+ 2dBm), the signal of telecommunication of descending optical receiver output through downstream signal light automatic gain (AGC) control circuit, is amplified invariable signal of telecommunication of output by amplifier tube A1, A2.+ 24V direct voltage is through capacitor C 11, C6, resistance R 5, capacitor C 5, resistance R 3, R4, capacitor C 7, signal coupler Z1, descending optical receiver 1 pin of inductance L 2 inputs, optical receiver work, by descending optical receiver 1 pin output signal of telecommunication process inductance L 2, signal coupler Z1, capacitor C 3,1 pin of C4 input amplifier tube A1, + 8V direct voltage is through capacitor C 10, resistance R 6, capacitor C 9, inductance L 4 is input to 2 pin of amplifier tube A1, amplifier tube A1 work, the signal of telecommunication that 2 pin of amplifier tube A1 amplify is through capacitor C 8, inductance L 3,3 pin of resistance R 9 input double diode D1; Light-emitting diode D14～D23, resistance R 37～R46, capacitor C 24, C25 forms the luminous power indicating circuit, descending optical receiver 2 pin 1V/mW voltages are through inductance L 1, resistance R 1, R2, capacitor C 1, C2 outputs to by inductance L 5, capacitor C 13, C17, amplifier LM1～LM3, resistance R 16～R36, R47～R57, capacitor C 22, C23, C26, C27, diode D4～D13 forms light AGC control circuit, in certain received optical power scope, guarantee the invariable signal of telecommunication of light agc circuit output, double diode D1, D2, resistance R 7, R8, R10, R11, R12, R13, R14, capacitor C 12, C14, C15 forms the light agc circuit; The 3 pin output signal of telecommunication of double diode D2 is through 1 pin of resistance R 14, capacitor C 16 input amplifier tube A2, + 8V direct voltage is through 2 pin of capacitor C 21, resistance R 15, capacitor C 18, inductance L 6 input amplifier tube A2, amplifier tube A2 work, the signal of telecommunication that 2 pin of amplifier tube A2 amplify outputs to the downstream signal amplifying circuit through capacitor C 19, attenuator ATT1.A1 wherein, A2 is low noise amplifier tube F226, Z1 is the signal coupling coil, LM1～LM3 is an operational amplifier, D1, D2 is a staged decay double diode, D3 is a voltage-stabiliser tube, D4～D13 is a diode, D14～D23 is a light-emitting diode, ATT1 is fixed attenuator, L4, L5 is a High frequency filter direct current overcurrent inductance, and L1～L3 adjusts air core inductor for the signal flatness, and C4 is a signal flatness control capacittance, C17 is a tantalum electric capacity, C20 is an electrochemical capacitor, C3, C8, C16, C19 is the high frequency capacitance, C1, C2, C5～C7, C9～C15, C17, C18, C21～C27 is a high-frequency filter capacitor, R9, R14 is an impedance matching resistance, R2, R3, R8, R11, R13, R57 is a dropping resistor, R1, R4～R7, R10, R12, R15～R56 is a current-limiting resistance.

Referring to Fig. 5: the downstream signal amplifying circuit is the signal of telecommunication of downstream signal light automatic gain control control circuit output to be amplified the back regulate equalizer EQ1, attenuator ATT2 according to network design requirement and output to hybrid circuit.The push-pull amplifier circuit amplification signal that downstream signal light automatic gain control circuit output signal of telecommunication process signal coupler 2Z1,2Z2, amplifier tube 2A1,2A2 form is exported the signal of telecommunication to hybrid circuit by amplification module 2A3 amplifying signal through inductance 2L5 through signal coupler 2Z3, equalizer EQ1, attenuator ATT2.Signal coupler 2Z1 exports a signal through electric capacity 2C3, signal coupler 2Z1 and electric capacity 2C5 are to 1 pin of amplifier tube 2A1, + 8V direct voltage is through electric capacity 2C1,2C2, resistance 2R1, inductance 2L1 is input to 2 pin of amplifier tube 2A1, amplifier tube 2A1 work, the signal of telecommunication that the 2 pin output of amplifier tube 2A1 is amplified is through electric capacity 2C4, signal coupler 2Z2, signal coupler 2Z1 output signal is through 1 pin of electric capacity 2C5 to amplifier tube 2A2, + 8V direct voltage is through electric capacity 2C7,2C8,2C9, resistance 2R2, inductance 2L2 is input to 2 pin of amplifier tube 2A2, amplifier tube 2A2 work, the signal of telecommunication that the 2 pin output of amplifier tube 2A2 is amplified is through electric capacity 2C6, signal coupler 2Z2; Signal coupler 2Z2 output signal of telecommunication process signal coupler 2Z3, resistance 2R4, equalizer EQ1, attenuator ATT2 are input to 1 pin of amplification module 2A3, and resistance 2R3, adjustable potentiometer 2Rt1, inductance 2L3, electric capacity 2C10 form the flatness that the leveling net is adjusted the signal of telecommunication; + 24V direct voltage is input to 5 pin of amplification module 2A3 through electric capacity 2C13,2C12, inductance 2L4, diode 2D3; amplification module 2A3 work; the signal of telecommunication after the 9 pin output of amplification module 2A3 is amplified is input to hybrid circuit through inductance 2L5, and resistance 2R5, diode 2D1,2D2 form the module output protection circuit.Wherein 2Z1～2Z3 is a signal coupler; 2A1; 2A2 is low noise amplifier tube F226; 2A3 is the Japanese MC-7884S of NEC Corporation GaAs amplification module; EQ1 is fixed equalizer; ATT2 is fixed attenuator; 2D1; 2D2 is a module output protection diode; 2D3 is+24V direct voltage moment overvoltage protection diode 2L1; 2L2; 2L4 is a High frequency filter direct current overcurrent inductance, 2L3; 2L5 is that flatness is regulated air core inductor; 2Rt1 is that flatness is regulated adjustable potentiometer; 2C3～2C6 is the high frequency capacitance, and 2C7 is an electrochemical capacitor, 2C1; 2C2; 2C8; 2C9; 2C12; 2C13 is a high-frequency filter capacitor; 2C10 is the flatness control capacittance; 2C11 is an impedance matching electric capacity, 2R1; 2R2 is a current-limiting resistance, and 2R3 is that flatness is regulated resistance; 2R4 is that isolation is regulated resistance, and 2R5 is a module output protection resistance.

Referring to Fig. 6: the upward signal amplifying circuit is the uplink electrical signals of hybrid circuit input to be amplified the back through amplification module require to export to the radio-frequency (RF) switch control circuit after the conditioning signal intensity according to up optical sender radio-frequency driven level.Hybrid circuit output upward signal is through attenuator RATT1, signal coupler 3Z1, the first triple gate switch, resistance 3R3, signal coupler 3Z3, the second triple gate switch, low pass filter, electric capacity 3C3 1 pin to amplification module 3A1; + 24V direct voltage is through electric capacity 3C6,3C5, inductance 3L1, electric capacity 3C4 5 pin to amplification module 3A1, and amplification module 3A1 works; Signal after the amplification is by 9 pin output process leveling net, attenuator RATT2, the equalizer REQ123﹠amp of amplification module 3A1; 4, signal coupler 3Z4 outputs to the radio-frequency (RF) switch control circuit; The hybrid circuit input signal is through signal coupler 3Z1, resistance 3R2, signal coupler 3Z2, the capable on the way signal incoming level TEST2 of resistance 3R1 output, upward signal incoming level TEST2 is connected with data acquisition circuit, export another road signal to Wiring port R.IN/TEST, the uplink signal strength of monitoring input makes things convenient for the network engineering commissioning staff to adjust attenuator RATT1 and regulates the input uplink signal strength; Resistance 3R4, electric capacity 3C7, inductance 3L2, resistance 3R5,3R6,3R7, inductance 3L3, electric capacity 3C8 form the flatness that the leveling net is regulated upward signal; Signal coupler 3Z4 branch end, 3R9,3R10,3R8 form monitoring mouthful output signal to Wiring port R.OUT/TEST, the upward signal flatness and the intensity of monitoring input optical sender make things convenient for the network engineering commissioning staff to adjust attenuator RATT2, equalizer REQ123﹠amp; 4 regulate input optical sender upward signal.Wherein R.IN/TEST is interior, the machine external monitor mouth of machine of equipment, and RATT1, RATT2 are fixed attenuator, REQ123﹠amp; 4 is fixed equalizer, 3L1 is a High frequency filter direct current overcurrent inductance, 3L2,3L3 is that flatness is regulated air core inductor, 3Z1～3Z4 is a signal coupler, 3A1 is the German PDI R-235 of company reverse amplification module, 3C1,3C2 is an impedance matching electric capacity, 3C3 is the high frequency capacitance, 3C4,3C5 is a high-frequency filter capacitor, 3C6 is the High frequency filter Leaded Ceramic Disc Capacitor, 3C7,3C8 is the flatness control capacittance, 3R1,3R3 is that isolation is regulated resistance, 3R2,3R5,3R6,3R11 is an impedance matching resistance, 3R4,3R7 is that flatness is regulated resistance, 3R8～3R10 is a damping resistance, first, the second triple gate switch is control upstream noise switch, and low pass filter is to filter the device of 65MHz with uplink and downlink signals.

Referring to Fig. 7: the radio-frequency (RF) switch control circuit is that the signal of telecommunication that the upward signal amplifying circuit is come is exported to up optical sender control circuit by radio-frequency relay 6J1 control.The signal of telecommunication input signal coupler 6Z1 primary input end of upward signal amplifying circuit, the signal input part of signal coupler 6Z1 master output output radio-frequency relay 6J1, radio-frequency relay 6J1 opens and closes relay by the radio-frequency (RF) switch control circuit, when signal reaches the threshold value of setting, signal arrives up optical sender control circuit by the signal output part output signal of radio-frequency relay 6J1, when signal was lower than the threshold value of setting, signal turn-offed, and avoids the intrusion of return noise; The BAIS signal of up optical sender control circuit, chip U7, resistance 6R1～6R3, electric capacity 6C1,6C2, LED are formed counter circuit output uplink monitoring signal and are given analog to digital conversion circuit; Uplink monitoring signal, chip U3, electric capacity 6C3～6C6, resistance 6R4,6R5 form analog to digital conversion circuit and export to the peak value comparison circuit; Resistance 6R6～6R12, electric capacity 6C7～6C9, diode 6D1～6D4, chip U4-U6 form the peak value comparison circuit and export to pulse-width modulation circuit through the B point; Resistance 6R13～6R18, electric capacity 6C10,6C11,6C12, diode 6D5, chip U1 form pulse-width modulation circuit and export to oscillating circuit; Resistance 6R19～6R22, electric capacity 6C13～6C16, controllable silicon 6D7, chip U2 form the open and close of oscillating circuit control radio-frequency relay 6J1.Wherein 6Z1 is a signal coupler, 6J1 is a radio-frequency relay, U7 is the SE555 timer chip, U3 is the DAC0800 analog-digital chip, U1 is the UC3842 pulse width modulating chip, U2 is the CD4528 oscillator chip, 6D1～6D6 is a diode, and 6D7 is a controllable silicon, and LED is a green LED, U4-U6 is a LF356N amplifier chip, 6C6,6C10,6C14 is the high frequency capacitance, 6C1～6C5,6C7～6C9,6C11～6C13,6C15,6C16 is a high-frequency filter capacitor, and 6R23 is an impedance matching resistance, 6R4,6R6,6R15,6R16,6R18 is a dropping resistor, 6R1～6R3,6R5,6R6～6R14,6R17,6R19～6R22 is a current-limiting resistance.

Referring to Fig. 8: up optical sender control circuit is that the signal of telecommunication that the radio-frequency (RF) switch control circuit is come is transferred to the up optical sender that light signal is exported to optical module by up optical sender.The signal of telecommunication of radio-frequency (RF) switch control circuit opens and closes up optical sender through up optical sender control circuit, when signal reaches the threshold value of setting, up optical sender is opened work, when signal is lower than the threshold value of setting, up optical sender is closed, and avoids the intrusion of return noise; The radio-frequency (RF) switch controller circuitry output signal of telecommunication is input to the LD negative pole of up optical sender through diode 1D5,1D4, resistance 1R21, electric capacity 1C10; The PD of inductance 1L1, triode 1V1～1V3, light-emitting diode 1D1～1D2, controllable silicon 1D3, amplifier 1LM1,1LM2, adjustable potentiometer 1Rt1～1Rt3, electric capacity 1C1～1C9, resistance 1R1～1R20, up optical sender forms Output optical power and the luminous power indication that up optical sender control circuit is provided with optical sender.Voltage BAIS is connected with data acquisition circuit.Wherein, 1D4; 1D5 is up optical sender protection diode; 1R21 is an impedance matching resistance; 1C10 is the high frequency capacitance; LD; PD forms up optical sender; 1V1～1V3 is a triode, and 1D3 is a controllable silicon, and 1D1 is a green LED; 1D2 is red light emitting diodes (a pilot light transmitter operating state); 1LM1; 1LM2 is an operational amplifier, and 1Rt1～1Rt3 is an adjustable potentiometer, and 1L1 is a High frequency filter direct current overcurrent inductance; 1C4; 1C6 is an electrochemical capacitor; 1C1～1C3; 1C5; 1C7～1C9 is a high-frequency filter capacitor, 1R7; 1R16; 1R19; 1R20 is a dropping resistor, 1R1～1R6; 1R8～1R15; 1R17; 1R18 is a current-limiting resistance.

Referring to Fig. 9: hybrid circuit is the CATV signal and the data-signal that needs to gather mixes the back and be transferred to each cable TV subscriber by coaxial distribution network.Downstream signal amplifying circuit signal is input to the high go side of duplexer filter FLT1, by the mixing end output signal of duplexer filter FLT1 input to distribution branch plug-in unit FZ/FP1, the output output signal of distribution branch plug-in unit FZ/FP1 outputs to hfc plant through electric capacity 4C2, signal coupler 4Z1, electric capacity 4C1, discharge tube 4VD1, Wiring port OUT1, and another output output signal of distribution branch plug-in unit FZ/FP1 outputs to hfc plant through electric capacity 4C3,4C4, discharge tube 4VD2, Wiring port OUT2; Upward signal outputs to duplexer filter FLT1 by hfc plant through Wiring port OUT1, discharge tube 4VD1, electric capacity 4C1, signal coupler 4Z1, electric capacity 4C2, distribution branch plug-in unit FZ/FP1 and mixes end, export upward signal to the upward signal amplifying circuit from the low go side of duplexer filter FLT1, upward signal outputs to duplexer filter FLT1 by hfc plant through Wiring port OUT2, discharge tube 4VD2, electric capacity 4C4,4C3, distribution branch plug-in unit FZ/FP1 and mixes end, exports upward signal to the upward signal amplifying circuit from the low go side of duplexer filter FLT1; Downstream signal is exported one road signal to Wiring port OUT/TEST through signal coupler 4Z1,4Z2, resistance 4R2, exports another road signal to downstream signal output level TEST1, and downstream signal output level TEST1 is connected with data acquisition circuit; Wiring port AC60V/IN, discharge tube 4VD3, electric capacity 4C6～4C14, inductance 4L1,4L2, overcurrent inserted sheet CP1, CP2 form interchange 60V power supply circuits, insert corresponding overcurrent inserted sheet CP1, CP2 according to network design requirement and select stream mode; Switching Power Supply input AC60V voltage, output dc voltage+24V ,+8V ,+5V ,-5V.Wherein FLT1 is a duplexer filter; FZ/FP1 is the distribution branch plug-in unit; OUT1; OUT2; AC60V/IN is a hfc plant cable connection port; OUT/TEST is descending monitor signal output Wiring port; monitoring downstream signal flatness and intensity; make things convenient for the network engineering commissioning staff to adjust attenuator ATT2; equalizer EQ1 regulates the intensity and the slope of output signal; 4VD1～4VD3 is anti-lightning strike and the surge protection discharge tube; 4L1; 4L2 is that High frequency filter exchanges the overcurrent inductance; CP1; CP2 is for exchanging the overcurrent inserted sheet; 4Z1; 4Z2 is a signal coupler; 4C1; 4C4 is high pressure resistant high frequency Leaded Ceramic Disc Capacitor, 4C2; 4C3; 4C5 is an impedance matching electric capacity, and 4R1 is an impedance matching resistance; 4R2 is that isolation is regulated resistance, and 4C6～4C14 is high pressure resistant filtering Leaded Ceramic Disc Capacitor.

Referring to Figure 10: data acquisition circuit is needing data monitored to carry out being transferred to network management responder after the sample acquisitions.B point (optical receiver luminous power voltage 1V/mW) voltage process 5C1 enters 3 pin of amplifier 5LM1, and the B point is connected with the B point of downstream signal light agc circuit, and the sample circuit dateout that process amplifier 5LM1, resistance 5R1,5R2 form is to 1 pin of connector CZ1; Downstream signal output level TEST1 enters 4 pin of amplifier 5LM3 through resistance 5R3, sample circuit dateout through amplifier 5LM1,5LM3, resistance 5R4, electric capacity 5C3,5C4, resistance 5R9,5R10 composition arrives 3 pin of connector CZ1, and downstream signal output level TEST1 is connected with hybrid circuit; 1V/Mw (up optical sender control circuit Output optical power) voltage enters 3 pin of amplifier 5LM2 through electric capacity 5C2, sample circuit dateout through amplifier 5LM2, resistance 5R5,5R6 composition arrives 5 pin of connector CZ1, and voltage 1V/mW is connected with up optical sender control circuit; Upward signal incoming level TEST2 enters 4 pin of amplifier 5LM4 through resistance 5R7, sample circuit dateout through amplifier 5LM2,5LM4, resistance 5R8, electric capacity 5C5,5C6, resistance 5R11,5R12 composition arrives 7 pin of connector CZ1, and upward signal incoming level TEST2 is connected with the upward signal amplifying circuit; + 5V voltage arrives 2 pin of connector CZ1 through resistance 5R17,5R18,5R13 dateout; + 8V voltage arrives 4 pin of connector CZ1 through resistance 5R19,5R20,5R14 dateout; + 24V voltage arrives 6 pin of connector CZ1 through resistance 5R22,5R21,5R15 dateout; AC60V voltage arrives 8 pin of connector CZ1 through diode 5D1, resistance 5R24,5R23,5R16 dateout; Up optical sender control circuit voltage BAIS enters 3 pin of amplifier 5LM6 through electric capacity 5C7, sample circuit dateout through amplifier 5LM6, resistance 5R25,5R26 composition arrives 12 pin of connector CZ1, and voltage BAIS is connected with up optical sender control circuit;-5V voltage process resistance 5R28 enters 6 pin of amplifier 5LM6, and the sample circuit dateout that process amplifier 5LM6, electric capacity 5C8, resistance 5R27 form is to 10 pin of connector CZ1; + 24V voltage enters 5 pin of amplifier 5LM5 through resistance 5R33, + 24V/1 voltage enters 6 pin of amplifier 5LM5 through resistance 5R34, process resistance 5R32 enters 3,7 pin of amplifier 5LM5, and the sample circuit dateout that process amplifier 5LM5, resistance 5R29,5R30,5R31,5R35,5R36 form is to 14 pin of connector CZ1; 9,11 pin of connector CZ1 are unsettled, 15,16 pin ground connection, and connector CZ1 is connected with I class or II class network management responder.Wherein 5LM1～5LM6 is an operational amplifier, 5D1 is a diode, 5C1～5C8 is a high-frequency filter capacitor, CZ1 is the double connectors of 8 pins, 5R2～5R4,5R6～5R8,5R10,5R12,5R18,5R20,5R21,5R23,5R26,5R28,5R31,5R35,5R36 are dropping resistor, and 5R1,5R5,5R9,5R11,5R13～5R17,5R19,5R22,5R24,5R25,5R27,5R29,5R30,5R32～5R34 are current-limiting resistance.

Perhaps, the most attractive benefit of RFoG is to reduce the network operation cost." passive " vocabulary shows, when signal during in transmission over networks, optical transmission need not power supply or active electronic assembly.Active equipment in the network is few more, and every user's maintenance cost is just low more in the cycle in useful life of network.

When disposing the FTTP solution, it is essential to make full use of existing business support system (BSS) and OSS (OSS), so that the existing investment of cable television operators protection on equipment, management, charging and fault eliminating etc. are used.Adding new BSS and OSS application, workflow and process indiscreetly will be inefficient with support optical fiber solution, and will cause the increase of operation cost and the reduction of level of customer service.By realizing measured non-proprietary RFoG solution, cable television operators can deployed fiber arrive family (FTTP fiber to the premise) solution, not only in the current competitive advantage that wins, and can be, and need not to change last kilometer connection that is connected to user resident in future economy evolution efficiently to GPON.

IPization is the general trend of information network development.The transmission of a new generation's encoding and decoding technique all is based on the IP form, so the necessary IPization of front end, and front end IPization must drive the IPization of transmission network.The present invention is about to the two-way net equipment of a cable TV of issue " two-wayization of cable television network transformation instruction " up-to-date development according to SARFT(The State Administration of Radio and Television), it is ethernet passive optical network (EPON, Ethernet Passive Optical Network) 1 product of the two-way net transformation of technology, its following points technical advantage:

1. noise collection effect: RFoG light station interior lights module is synchronoused working with the return path signal of CM (user terminal) or STB (subscriber computer top box) with time division multiplexing mode, when signal, optical module is opened work, when no signal, optical module is closed, and invades to suppress return noise; Because optical module and CM or STB strict synchronism, so avoided two optical modules to be opened simultaneously and bump, even cover nearly 32 little nodes, any moment also only has only that passback optical link of a RFoG equipment correspondence in work.In addition, the signal that transmits on the optical fiber " cleaner " is not because light signal is vulnerable to resemble suffered interference the radiofrequency signal of transmission over coaxial cable.

2. very high bandwidth is provided: the PON interface at RFoG light station can transmit the 1G bandwidth at main line, and 32 ONU equipment of maximum support can better be supported future network construction and planning and development.Its message transmission rate can reach 85-200M bps, is tens times of CMTS.

3. meet the IPization trend: system and network architecture simple transparent, network is realized EPON, and network operation is convenient, fast, and network reliability significantly improves.

4. cost is relatively low per family: make full use of existing business support system (BSS), OSS (OSS) and CMTS headend equipment, 1 passback receiver is shared at a plurality of RfoG light station (theoretical maximum 32), and passback receiver RF return path signal transfers to headend equipment through the front radio-frequency blender; Front end (or sub-headend) machine room front radio-frequency blender and passback optical receiver significantly reduce, and machine room space and construction cost are lower, manage more simple.

5. be convenient to upgrade expanding: optical fiber is extended to user side, EPON is transparent fully to signal transfer protocol, format modulation signal, when the user needs higher transmission rate really smooth upgrade is to the X-PON system more from now on, also only need to share this PON network, add headend equipment (OLT) in front end (or sub-headend) position, add subscriber terminal equipment (ONU) at user side.The EPON system is the technology that faces the future, and most of EPON system all is a multiple service platform, well selects for to the complete IP network transition being one.System has good professional expansion and network upgrade ability, and network can be expanded according to the growth of customer volume, and bandwidth also can smooth upgrade.

6. fail safe, reliability height, maintainable good: network replaces the construction of cable of hfc plant with the PON structure, network configuration is very simple, between front end and user, significantly reduced the active electronic equipment, as light station and amplifier, do not need open-air power supply, the AC backup of power is added up RF PON network according to operator and can be reduced by 90% maintenance than hfc plant.Equipment and number of fibers significantly reduce, and the network architecture is simple and clear, and network is realized passive transmission.

Wherein:

RFoG:RF over glass, the radio frequency Optical Fiber Transmission.

GPON:Gigabit-Capable PON, gigabit passive optical network.Latest generation broadband passive light based on the ITU-TG.984.x standard comprehensively inserts standard, has high bandwidth, high efficiency, large coverage, numerous advantages such as user interface is abundant are considered as realizing that by most of operators the Access Network business is broadband, the desirable technique that synthesization is transformed.

EPON:Ethernet Passive Optical Network, ethernet passive optical network.A kind of novel Optical Access Network technology, it adopts point to multipoint configuration, passive fiber transmission, and multiple business is provided on Ethernet.

BSS:Business support system, business support system.Systems such as charging, clearing, account, customer service, business.

OSS:Operation support system, OSS.System such as webmaster, network optimization.

OLT:Optical Line Terminal, optical line terminal.Be used to connect the terminal equipment of fiber optic backbone.

ONU:Optical Network Unit, optical network unit.The user side equipment of Access Network provides various uni interfaces such as phone, data communication, image for the user.

Claims (8)

1. one kind is used for the radio frequency Optical Fiber Transmission optical workstation that cable TV two-way network is transformed, it is characterized in that comprising wavelength division multiplexer, 4 wavelength optical signals transmitting in 1 optical fiber are separated, and one the tunnel gives optical module, and the EPON optical signal interface is given on another road; Optical module, optical module is given downstream signal light automatic gain control circuit one road light signal, and another road light signal is given up optical sender control circuit; Downstream signal light automatic gain control circuit is converted to the constant signal of telecommunication to the downlink optical signal of Headend, by downstream signal light automatic gain control control circuit, exports the constant signal of telecommunication and gives the downstream signal amplifying circuit; The downstream signal amplifying circuit exporting to hybrid circuit after the constant signal of telecommunication amplification, is given data acquisition circuit the data-signal that needs are gathered; The upward signal amplifying circuit is given the radio-frequency (RF) switch control circuit uplink electrical signals of hybrid circuit output after adjusting, give data acquisition circuit the data-signal that needs are gathered; The radio-frequency (RF) switch control circuit is the opening and closing of the signal of up amplifying circuit output through the acquisition process control signal; Up optical sender control circuit is the electrical signal conversion of radio-frequency (RF) switch control circuit output a light signal, gives data acquisition circuit the data-signal that needs are gathered; Hybrid circuit being transferred to each cable TV subscriber by hybrid fiber coax after upward signal amplifying circuit and the downstream signal amplifying circuit division of signal frequency, is given data acquisition circuit the data-signal that needs are gathered; Data acquisition circuit is given I class or II class network management responder dateout after the major parameter sampling processing in the equipment.

2. the radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation according to claim 1, it is characterized in that described downstream signal light automatic gain control circuit comprises inductance L 1～L6, capacitor C 1～C27, double diode D1, D2, voltage-stabiliser tube D3, diode D4～D13, light-emitting diode D14～D23, resistance R 1～R57, amplifier tube A1, A2, signal coupler Z1, amplifier LM1～LM3 and attenuator ATT1, amplifier tube A1 wherein, A2 is F226,1 pin of the descending optical receiver in the optical module connects an end of inductance L 2, inductance L 2 another termination signal coupler Z1 inputs, one end of signal coupler Z1 output connecting resistance R4 and capacitor C 7, capacitor C 7 other end ground connection, resistance R 4 other end connecting resistance R3, one end of R5 and capacitor C 5, resistance R 3, capacitor C 5 other end ground connection, resistance R 5 other ends, capacitor C 6, one termination direct voltage+24V of C11 and resistance R 7, capacitor C 6, C11 other end ground connection, resistance R 7 other end connecting resistance R10, R11, one end of R12 and capacitor C 14, resistance R 11, capacitor C 14 other end ground connection, resistance R 10 another termination capacitor C 12, one end of resistance R 8 and 1 pin of double diode D1, capacitor C 12, resistance R 8 other end ground connection, resistance R 12 another termination capacitor C 15, one end of resistance R 13 and 1 pin of double diode D2, capacitor C 15, resistance R 13 other end ground connection, signal coupler Z1 mixes the end of termination capacitor C3,1 pin of capacitor C 3 another termination amplifier tube A1 and an end of capacitor C 4, capacitor C 4 other end ground connection, 3 of amplifier tube A1,4 pin ground connection, 2 pin of amplifier tube A1 connect an end of capacitor C 8 and inductance L 4, one end of inductance L 4 another termination capacitor C 9 and resistance R 6, capacitor C 9 other end ground connection, an end of resistance R 6 another termination direct voltage+8V and capacitor C 10, capacitor C 10 other end ground connection, one end of capacitor C 8 another termination inductance L 3, the end of inductance L 3 other end connecting resistance R9 and 3 pin of double diode D1, resistance R 9 other end ground connection, 2 pin of double diode D1 connect 2 pin of double diode D2 and an end of inductance L 5,3 pin of double diode D2 connect an end of capacitor C 16 and resistance R 14, resistance R 14 other end ground connection, 1 pin of capacitor C 16 another termination amplifier tube A2,3 of amplifier tube A2,4 pin ground connection, 2 pin of amplifier tube A2 connect an end of capacitor C 19 and inductance L 6, the input of capacitor C 19 another termination attenuator ATT1, and the output output of ATT1 connects the downstream signal amplifying circuit, an another termination capacitor C 18 of inductance L 6 and an end of resistance R 15, capacitor C 18 other end ground connection, resistance R 15 another termination direct voltage+8V, the end of capacitor C 20 positive poles and C21, capacitor C 20 negative poles and C21 other end ground connection, one end of inductance L 5 another termination capacitor C 13, the positive pole of capacitor C 17 and A point, the other end of capacitor C 13, the minus earth of capacitor C 17, the A point connects an end of capacitor C 22, the end of the negative pole of voltage-stabiliser tube D3 and resistance R 16～R26, the plus earth of the other end of capacitor C 22 and voltage-stabiliser tube D3, one end of resistance R 16 another termination capacitor C 23, capacitor C 23 other end ground connection, resistance R 17～R26 other end is the end of connecting resistance R27～R36 respectively, and resistance R 27～R36 other end connects the negative pole of diode D4～D13 respectively, the positive pole of diode D4 connects 8 pin of amplifier LM3 and the positive pole of light-emitting diode D14, the positive pole of diode D5 connects 14 pin of amplifier LM3 and the positive pole of light-emitting diode D15, and the positive pole of diode D6 connects 8 pin of amplifier LM2 and the positive pole of light-emitting diode D16, and the positive pole of diode D7 connects 14 pin of amplifier LM2 and the positive pole of light-emitting diode D17, the positive pole of diode D8 connects 1 pin of amplifier LM1 and the positive pole of light-emitting diode D18, the positive pole of diode D9 connects 7 pin of amplifier LM3 and the positive pole of light-emitting diode D19, and the positive pole of diode D10 connects 1 pin of amplifier LM3 and the positive pole of light-emitting diode D20, and the positive pole of diode D11 connects 7 pin of amplifier LM2 and the positive pole of light-emitting diode D21, the positive pole of diode D12 connects 1 pin of amplifier LM2 and the positive pole of light-emitting diode D22, the positive pole of diode D13 connects 7 pin of amplifier LM1 and the positive pole of light-emitting diode D23, and the negative pole of light-emitting diode D14～D23 is the end of connecting resistance R37～R46 respectively, another termination direct voltage+8V of resistance R 37～R46 and capacitor C 24, the end of C25, capacitor C 24, C25 other end ground connection, the 3 pin connecting resistance R47 of amplifier LM1, the end of R48,12 pin of resistance R 48 another termination amplifier LM2, one end of resistance R 49,10 pin of resistance R 49 another termination amplifier LM2, one end of resistance R 50,12 pin of resistance R 50 another termination amplifier LM3, one end of resistance R 51,10 pin of resistance R 51 another termination amplifier LM3, one end of resistance R 52, resistance R 52 another termination direct voltage+24V, one end of capacitor C 26, capacitor C 26 other end ground connection, 8 pin of amplifier LM1,4 pin of LM2,4 pin of LM3 meet direct voltage+24V, 5 pin of resistance R 47 another termination amplifier LM1, one end of resistance R 53,3 pin of resistance R 53 another termination amplifier LM2, one end of resistance R 54,5 pin of resistance R 54 another termination amplifier LM2, one end of resistance R 55,3 pin of resistance R 55 another termination amplifier LM3, one end of resistance R 56,5 pin of resistance R 56 another termination amplifier LM3, one end of resistance R 57, resistance R 57 other end ground connection, 4 pin of amplifier LM1,11 pin of LM2, the 11 pin ground connection of LM3,3 pin ground connection of the descending optical receiver in the optical module, 2 pin of descending optical receiver connect an end of inductance L 1, inductance L 1 other end connecting resistance R1, R2, one end of capacitor C 1, resistance R 2, capacitor C 1 other end ground connection, resistance R 1 another termination capacitor C 2 and Y point, the Y point connects an end of capacitor C 27,2 and 6 pin of amplifier LM1,2 of LM2,6,9, with 13 pin, 2 of LM3,6,9 and 13 pin, capacitor C 2, C27 other end ground connection.

3. the radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation according to claim 1, it is characterized in that described downstream signal amplifying circuit comprises inductance 2L1～2L5, signal coupler 2Z1～223, adjustable potentiometer 2Rt1, diode 2D1～2D3, electric capacity 2C1～2C13, resistance 2R1～2R5, equalizer EQ1, attenuator ATT2, amplifier tube 2A1,2A2 and amplification module 2A3, amplifier tube 2A1 wherein, 2A2 is F226, amplification module 2A3 is MC-7884S, light agc circuit signal is input to the input of signal coupler 2Z1, another input end grounding of signal coupler 2Z1, the end of the output termination capacitor 2C3 of signal coupler 2Z1,1 pin of another termination amplifier tube 2A1 of electric capacity 2C3,3 of amplifier tube 2A1,4 pin ground connection, 2 pin of amplifier tube F2A1 meet inductance 2L1, the end of electric capacity 2C4, the other end connecting resistance 2R1 of inductance 2L1, the end of electric capacity 2C2, the other end ground connection of electric capacity 2C2, the other end of resistance 2R1, termination direct voltage+the 8V of electric capacity 2C1, electric capacity 2C1 other end ground connection, the input of another termination signal coupler 2Z2 of electric capacity 2C4, the end of signal coupler 2Z1 output termination capacitor 2C5,1 pin of another termination amplifier tube F2262A2 of electric capacity 2C5,3 of amplifier tube 2A2,4 pin ground connection, 2 pin of amplifier tube 2A2 meet electric capacity 2C6, the end of inductance 2L2, the other end connecting resistance 2R2 of inductance 2L2, the end of electric capacity 2C9, the other end ground connection of electric capacity 2C9, the resistance 2R2 other end, the positive pole of electric capacity 2C7, termination direct voltage+the 8V of 2C8, the negative pole of electric capacity 2C7, the other end ground connection of 2C8, another input of another termination signal coupler 2Z2 of electric capacity 2C6, the primary input end of the output termination signal coupler 2Z3 of signal coupler 2Z2, the end of resistance 2R3, another output head grounding of signal coupler 2Z2,1 pin of another termination adjustable potentiometer 2Rt1 of resistance 2R3,2 of adjustable potentiometer 2Rt1,3 pin connect the end of inductance 2L3, the end of another termination capacitor 2C10 of inductance 2L3, the other end ground connection of electric capacity 2C10, another primary input end ground connection of signal coupler 2Z3, the end of signal coupler 2Z3 coupling termination capacitor 2C11, the other end ground connection of electric capacity 2C11, signal coupler 2Z3 one output connecting resistance 2R4, the end of equalizer EQ1, the other end of another output connecting resistance of signal coupler 2Z3 2R4, the end of another termination attenuator ATT2 of equalizer EQ1,1 pin of another termination amplification module 2A3 of attenuator ATT2,2 of amplification module 2A3,3,7,8 pin ground connection, 5 pin of amplification module 2A3 connect the negative pole of diode 2D3, electric capacity 2C12, the end of inductance 2L4, the positive pole of diode 2D3, the other end ground connection of electric capacity 2C12, the other end of inductance 2L4, termination direct voltage+the 24V of electric capacity 2C13, electric capacity 2C13 other end ground connection, the 9 pin connecting resistance 2R5 of amplification module 2A3, the end of inductance 2L5, another terminating diode 2D2 negative pole of resistance 2R5, the 2D1 positive pole, diode 2D2 positive pole, the 2D1 minus earth, another termination hybrid circuit of inductance 2L5.

4. the radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation according to claim 1 is characterized in that described upward signal amplifying circuit comprises inductance 3L1～3L3, signal coupler 3Z1～3Z4, electric capacity 3C1～3C8, resistance 3R1～3R11, first, second triple gate switch, low pass filter, attenuator RATT1, RATT2, equalizer REQ123﹠amp; 4, amplification module 3A1 and monitoring mouthful R.IN/TEST, R.OUT/TEST, wherein amplification module 3A1 is R-235, the hybrid circuit output signal is to the end of attenuator RATT1, the primary input end of another termination signal coupler 3Z1 of attenuator RATT1, signal coupler 3Z1 coupled end ground connection, the termination signal coupler 3Z2 of signal coupler 3Z1 branch one input, another input end grounding of signal coupler 3Z2, the end of signal coupler 3Z2 coupling termination capacitor 3C1, electric capacity 3C1 other end ground connection, signal coupler 3Z2 two outputs are connecting resistance 3R1 two ends respectively, resistance 3R1 one termination monitoring mouthful R.IN/TEST, the resistance 3R1 other end connects capable signal incoming level TEST2, one end of an output termination first triple gate switch of signal coupler 3Z1, the end of another output connecting resistance of signal coupler 3Z1 3R2, resistance 3R2 other end ground connection, the end of the first triple gate switch other end connecting resistance 3R3, the input of signal coupler 3Z3, another input connecting resistance of signal coupler 3Z3 3R3 other end, the end of signal coupler 3Z3 coupling termination capacitor 3C2, electric capacity 3C2 other end ground connection, one end of the signal coupler 3Z3 one output termination second triple gate switch, another output head grounding of signal coupler 3Z3, one end of second another termination low pass filter of triple gate switch, the end of another termination capacitor of low pass filter 3C3,1 pin of another termination amplification module of electric capacity 3C3 3A1,2 of amplification module 3A1,3,7,8 pin ground connection, 5 pin of amplification module 3A1 meet inductance 3L1, the end of electric capacity 3C4, electric capacity 3C4 other end ground connection, the inductance 3L1 other end, electric capacity 3C5, termination direct voltage+the 24V of 3C6, electric capacity 3C5,3C6 other end ground connection, the 9 pin connecting resistance 3R4 of amplification module 3A1,3R6, the end of electric capacity 3C7, resistance 3R6 other end connecting resistance 3R5, the end of 3R7, another termination inductance of resistance 3R7 3L3, the end of electric capacity 3C8, inductance 3L3, electric capacity 3C8 other end ground connection, the end of another termination inductance of electric capacity 3C7 3L2, inductance 3L2 other end connecting resistance 3R4, the other end of 3R5, attenuator RATT2 input, attenuator RATT2 output termination equalizer REQ123﹠amp; An end of 4, equalizer REQ123﹠amp; 4 another termination signal coupler 3Z4 primary input ends, signal coupler 3Z4 one output termination radio-frequency (RF) switch control circuit, signal coupler 3Z4 coupled end ground connection, the end of signal coupler 3Z4 branch end connecting resistance 3R9,3R10, resistance 3R9 other end ground connection, the end of resistance 3R10 other end connecting resistance 3R8, monitoring mouthful R.OUT/TEST, resistance 3R8 other end ground connection, the end of another output connecting resistance of signal coupler 3Z4 3R11, resistance 3R11 other end ground connection.

5. the radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation according to claim 1, it is characterized in that described radio-frequency (RF) switch control circuit comprises radio-frequency relay 6J1, signal coupler 6Z1, electric capacity 6C1～6C16, resistance 6R1～6R23, LED, controllable silicon 6D7, diode 6D1～6D6, chip U1～U7, its chips 6U1 is UC3842,6U2 is CD4528,6U3 is DAC0800,6U4-6U6 is LF356N, 6U7 is SE555, upward signal amplifying circuit output signal connects the input of signal coupler 6Z1, the signal input part of the main output termination radio-frequency relay 6J1 of signal coupler 6Z1, the signal output part of radio-frequency relay 6J1 outputs to up optical sender control circuit to signal, the centre cap ground connection of signal coupler 6Z1, main split's output X point of signal coupler 6Z1 connects the end of electric capacity 6C3, the end of the output connecting resistance 6R23 of another branch of signal coupler 6Z1, resistance 6R23 other end ground connection, 5 of another chip termination 6U3 of electric capacity 6C3,6,7,8,9,10,11,12 pin, 13 pin of chip 6U3 meet electric capacity 6C4, an end and the voltage-5V of 6C6, electric capacity 6C4 other end ground connection, 16 pin of another chip termination 6U3 of electric capacity 6C6, the 1 pin ground connection of chip 6U3, voltage+5V meets electric capacity 6C5,6C7, the end of resistance 6R7,13 pin of chip 6U3 and chip 6U4,7 pin of 6U5, electric capacity 6C5, the other end ground connection of 6C7, the end of the 14 pin connecting resistance 6R5 of chip 6U3,3 pin of another chip termination 6U7 of resistance 6R5, the end of resistance 6R3 and LED positive pole, the LED minus earth, the other end of voltage+5V connecting resistance 6R3,4 pin of chip 6U7,8 pin, the end of resistance 6R2,7 pin of another chip termination of resistance 6R2 6U7, the end of resistance 6R1,6 pin of another chip termination 6U7 of resistance 6R1,2 pin, the end of electric capacity 6C1, the output voltage BAIS of up optical sender control circuit, 5 pin of chip 6U7 connect the end of electric capacity 6C2, electric capacity 6C1, the other end of 6C2, the 1 pin ground connection of chip 6U7, the end of the 15 pin connecting resistance 6R4 of chip 6U3, the end of the 2 pin connecting resistance 6R6 of chip 6U3,3 pin of chip 6U4, resistance 6R4,6R6 other end ground connection, the end of the 4 pin connecting resistance 6R7 of chip 6U3,2 pin of chip 6U4, the other end of resistance 6R7, electric capacity 3C5, the end of 3C7,13 pin of chip 6U3, chip 6U4,7 pin of 6U5 meet voltage+5V, and 4 pin of chip 6U4 meet voltage-5V, the end of the 6 pin connecting resistance 6R8 of chip 6U4,3 pin of another chip termination 6U5 of resistance 6R8,3 pin of chip 6U6, electric capacity 6C5,6C7 other end ground connection, chip 6U4,6U5,4 pin of 6U6 meet voltage-5V, the end of the 2 pin connecting resistance 6R9 of chip 6U5, diode 6D2 positive pole, diode 6D2 negative pole connects 6 pin of chip 6U5, diode 6D1 positive pole, the other end of diode 6D1 negative pole connecting resistance 6R9, the end of resistance 6R10, the end of electric capacity 6C8, voltage+5V connect 7 pin of chip 6U6, the end of the 2 pin connecting resistance 6R11 of chip 6U6, diode 6D4 positive pole, diode 6D4 negative pole connects 6 pin of chip 6U6, diode 6D3 negative pole, the anodal connecting resistance 6R11 of the diode 6D3 other end, resistance 6R12, the end of electric capacity 6C9, electric capacity 6C8,6C9 other end ground connection, the resistance 6R12 other end connecting resistance 6R10 other end and B point, B point connecting resistance 6R14, the end of electric capacity 6C10, diode 6D5 negative pole, the end of electric capacity 6C10 other end connecting resistance 6R16,4 pin of chip 6U1, resistance 6R14 other end connecting resistance 6R13, the end of 6R15,2 pin of chip 6U1, resistance 6R15,6R16 other end ground connection, 8 pin of another chip termination of resistance 6R13 6U1, diode 6D5 positive pole connects 1 pin of chip 6U1, and voltage+5V connects the end of electric capacity 6C11,7 pin of chip 6U1,3 pin of chip 6U1 meet electric capacity 6C12, the end of resistance 6R17, electric capacity 6C11, the 6C12 other end, the 5 pin ground connection of chip 6U1, resistance 6R17 other end connecting resistance 6R18,6R19, the end of electric capacity 6C13, diode 6D6 positive pole, 5 pin of chip 6U2, resistance 6R18, the electric capacity 6C13 other end, 1 of chip 6U2,4,8,12 pin ground connection, 3 pin of another chip termination of resistance 6R19 6U2, diode 6D6 negative pole, voltage+5V connects 13 pin of chip 6U2,16 pin, resistance 6R20,6R22, one end of radio-frequency relay 6J1 coil, 2 pin of another chip termination of resistance 6R20 6U2, the end of electric capacity 6C14,6 of chip 6U2,11 pin connect, 14 pin of another chip termination of resistance 6R21 6U2, the end of electric capacity 6C15,15 pin of another chip termination of electric capacity 6C15 6U2, the end of the 10 pin connecting resistance 6R22 of chip 6U2, another termination capacitor of resistance 6R22 6C16, the control utmost point of controllable silicon 6D7, electric capacity 6C14,6C16, controllable silicon 6D7 minus earth, controllable silicon 6D7 positive pole connect the radio-frequency relay 6J1 coil other end.

6. the radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation according to claim 1, it is characterized in that described up optical sender control circuit comprises electric capacity 1C1～1C10, resistance 1R1～1R22, light-emitting diode 1D1,1D2, controllable silicon 1D3, diode 1D4,1D5, triode 1V1～1V3, adjustable potentiometer 1Rt1～1Rt3 and amplifier 1LM1,1LM2, radio-frequency (RF) switch control circuit output signal connects diode 1D4 positive pole, the 1D5 negative pole, the end of resistance 1R21, diode 1D4 negative pole, 1D5 plus earth, the end of another termination capacitor of resistance 1R21 1C10, the electric capacity 1C10 other end connects the negative pole of capable optical sender LD, the end of inductance 1L1, the plus earth of up optical sender LD, the end of another termination capacitor of inductance 1L1 1C9, the collector electrode of triode 1V2, electric capacity 1C9 other end ground connection, the emitter connecting resistance 1R15 of triode 1V2, the end of 1R17, resistance 1R15 other end connecting resistance 1R14, the end of 1R18, the negative pole of electric capacity 1C6, the plus earth of electric capacity 1C6,3 pin of another termination amplifier of resistance 1R14 1LM1, the end of resistance 1R13,2 pin of another termination amplifier of resistance 1R13 1LM1, voltage BAIS, voltage BAIS is connected with the voltage BAIS of data acquisition circuit, 4 pin of another termination amplifier of resistance 1R17 1LM1, the end of resistance 1R16, resistance 1R16 other end ground connection, the base stage of triode 1V2 connects the emitter of triode 1V3, the end of resistance 1R2,8 pin of another termination amplifier of resistance 1R2 1LM2, the end of electric capacity 1C3,7 pin of another termination amplifier 1LM2 of electric capacity 1C3, the end of resistance 1R1,2 pin of another termination amplifier of resistance 1R1 1LM2, resistance 1R3, the end of 1R4,1 pin of another termination adjustable potentiometer of electric capacity 1R3 1Rt1,3 pin of adjustable potentiometer 1Rt1 connect 3 pin of amplifier 1LM2, the end of the 2 pin connecting resistance 1R8 of adjustable potentiometer 1Rt1, the end of resistance 1R8 other end connecting resistance 1R9, the negative pole of up optical sender PD in the optical module, the end of resistance 1R9 other end connecting resistance 1R10,4 pin of another termination amplifier of resistance 1R10 1LM2, the end of the anodal connecting resistance 1R22 of upstream transmitter PD in the optical module, electric capacity 1C4 negative pole, electric capacity 1C4 plus earth, the other end of resistance 1R22 other end connecting resistance 1R18, electric capacity 1C5, the end of 1C7,1 pin of adjustable potentiometer 1Rt3, electric capacity 1C5,1C7 other end ground connection, the end of the 2 pin connecting resistance 1R19 of adjustable potentiometer 1Rt3, resistance 1R19 other end ground connection, 3 pin of adjustable potentiometer 1Rt3 connect the base stage of triode 1V3, the end of electric capacity 1C8, another termination of electric capacity 1C8 direct voltage-5V, the collector electrode of triode 1V3,6 pin of another termination amplifier of resistance 1R4 1LM1, the 7 pin connecting resistance 1R5 of amplifier 1LM1, the end of 1R7, resistance 1R7 other end ground connection, 8 pin of another termination amplifier of resistance 1R5 1LM1, the end of resistance 1R6, voltage 1V/mW, the base stage of another termination triode of resistance 1R6 1V1, the grounded emitter of triode 1V1, the negative pole of the collector electrode sending and receiving optical diode 1D1 of triode 1V1, the end of the anodal connecting resistance 1R11 of light-emitting diode 1D1, another termination of resistance 1R11 direct voltage+5V, the end of resistance 1R12,1 of another termination controllable silicon of resistance 1R12 1D3,2 pin, 2 pin of adjustable potentiometer 1Rt2,3 pin of controllable silicon 1D3, the 1 pin ground connection of adjustable potentiometer 1Rt2,3 pin of adjustable potentiometer 1Rt2 connect 6 pin of amplifier 1LM2, the negative pole of direct voltage-5V sending and receiving optical diode 1D2, the end of the anodal connecting resistance 1R20 of light-emitting diode 1D2, resistance 1R20 other end ground connection, amplifier 1LM1,1 pin of 1LM2 meets direct voltage+5V, the end of electric capacity 1C1, electric capacity 1C1 other end ground connection, amplifier 1LM1,5 pin of 1LM2 meet direct voltage-5V, the end of electric capacity 1C2, electric capacity 1C2 other end ground connection.

7. the radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation according to claim 1, it is characterized in that described hybrid circuit comprises Wiring port OUT1, OUT2, AC60V/IN, OUT/TEST, discharge tube 4VD1～4VD3, signal coupler 4Z1,4Z2, inductance 4L1,4L2, overcurrent inserted sheet CP1, CP2, electric capacity 4C1～4C14, resistance 4R1,4R2,4R3, distribution branch plug-in unit FZ/FP1, duplexer filter FLT1 and Switching Power Supply, downstream signal amplifying circuit output signal is to the high go side of duplexer filter FLT1, the low go side output of duplexer filter FLT1 upward signal is to the upward signal amplifying circuit, duplexer filter FLT1 mixes termination distribution branch plug-in unit FZ/FP1 input, the end of distribution branch plug-in unit FZ/FP1 one output termination capacitor 4C2, signal coupler 4Z1 primary input end, electric capacity 4C2 other end ground connection, the end of signal coupler 4Z1 one output termination capacitor 4C1, another termination discharge tube of electric capacity 4C1 4VD1, the end of inductance 4L1, Wiring port OUT1, discharge tube 4VD1 other end ground connection, Wiring port OUT1 output downstream signal is to hfc plant, signal coupler 4Z1 coupled end ground connection, the end of another output connecting resistance of signal coupler 4Z1 4R1, resistance 4R1 other end ground connection, the input of the termination signal coupler 4Z2 of signal coupler 4Z1 branch, another input end grounding of signal coupler 4Z2, the cry and shout end of 4Z2 coupling termination capacitor 4C5 of signal coupling, electric capacity 4C5 other end ground connection, signal coupler 4Z2 two outputs are connecting resistance 4R2 two ends respectively, resistance 4R2 one termination downstream signal output level TEST1, another termination Wiring port OUT/TEST of resistance 4R2, another output termination capacitor of distribution branch plug-in unit FZ/FP1 4C3, the end of 4C4, electric capacity 4C3 other end ground connection, another termination discharge tube of electric capacity 4C4 4VD2, the end of inductance 4L2 and Wiring port OUT2, discharge tube 4VD2 other end ground connection, Wiring port OUT2 output downstream signal is to hfc plant, charger AC60V meets Wiring port AC60V/IN, Wiring port AC60V/IN meets discharge tube 4VD3, electric capacity 4C13,4C14,4C12,4C11,4C9,4C8,4C7, overcurrent inserted sheet CP2, the end of CP1, Switching Power Supply AC60V mouth, discharge tube 4VD3, electric capacity 4C13,4C14,4C12,4C11,4C9,4C8, the 4C7 other end, Switching Power Supply ground connection mouth ground connection, the other end of another termination inductance of overcurrent inserted sheet CP2 4L2, the end of electric capacity 4C10, electric capacity 4C10 other end ground connection, the other end of another termination inductance of overcurrent inserted sheet CP1 4L1, the end of electric capacity 4C6, electric capacity 4C6 other end ground connection, Switching Power Supply output dc voltage+24V, + 8V, + 5V,-5V uses for each circuit.

8. the radio frequency Optical Fiber Transmission optical workstation that is used for the cable TV two-way network transformation according to claim 1, it is characterized in that described data acquisition circuit comprises electric capacity 5C1～5C8, resistance 5R1～5R36, amplifier 5LM1～5LM6, diode 5D1 and connector CZ1, direct voltage+5V, + 8V, + 24V is connecting resistance 5R17 respectively, 5R19, the end of 5R22, resistance 5R17 other end connecting resistance 5R13, the end of 5R18, resistance 5R18 other end ground connection, 2 pin of resistance 5R13 other end connecting connector CZ1, resistance 5R19 other end connecting resistance 5R14, the end of 5R20, resistance 5R20 other end ground connection, 4 pin of resistance 5R14 other end connecting connector CZ1, resistance 5R22 other end connecting resistance 5R15, the end of 5R21, resistance 5R21 other end ground connection, 6 pin of resistance 5R15 other end connecting connector CZ1, charger AC60V connects diode 5D1 positive pole, the end of diode 5D1 negative pole connecting resistance 5R24, resistance 5R24 other end connecting resistance 5R16, the end of 5R23, resistance 5R23 other end ground connection, 8 pin of resistance 5R16 other end connecting connector CZ1, voltage BAIS connects 3 pin of amplifier 5LM6, the end of electric capacity 5C7, the electric capacity 5C7 other end, the 4 pin ground connection of amplifier 5LM6, the end of the 1 pin connecting resistance 5R25 of amplifier 5LM6 and 12 pin of connector CZ1 also are connected with voltage BAIS in the up optical sender control circuit, circuit, 2 pin of another termination amplifier of resistance 5R25 5LM6 and the end of resistance 5R26, resistance 5R26 other end ground connection, the end of voltage-5V connecting resistance 5R28,6 pin of another termination amplifier of resistance 5R28 5LM6, the end of resistance 5R27,7 pin of another termination amplifier of resistance 5R27 5LM6,10 pin of connector CZ1,8 pin of amplifier 5LM6 meet voltage+5V, the end of electric capacity 5C8,5 pin of amplifier 5LM6, electric capacity 5C8 other end ground connection, voltage+24V connects 8 pin of amplifier 5LM5, the end of resistance 5R33,5 pin of another termination amplifier of resistance 5R33 5LM5, the end of resistance 5R36, resistance 5R36 other end ground connection, voltage+24V/1 connecting resistance 5R34, the end of 5R35, resistance 5R35 other end ground connection, 6 pin of another termination amplifier of resistance 5R34 5LM5, the end of resistance 5R32,3 of another termination amplifier of resistance 5R32 5LM5,7 pin, the 4 pin ground connection of amplifier 5LM5, the 1 pin connecting resistance 5R29 of amplifier 5LM5, the end of 5R30,14 pin of resistance 5R29 other end connecting connector CZ1,2 pin of another termination amplifier of resistance 5R30 5LM5, the end of resistance 5R31, resistance 5R31 other end ground connection, the B point connects 3 pin of amplifier 5LM1, the end of electric capacity 5C1, the electric capacity 5C1 other end, the 4 pin ground connection of amplifier 5LM1, the end of the 1 pin connecting resistance 5R1 of amplifier 5LM1,1 pin of connector CZ1,2 pin of another termination amplifier of resistance 5R1 5LM1, the end of resistance 5R2, downstream signal output level TEST1 connects 4 pin of amplifier 5LM3, the end of resistance 5R3, the resistance 5R2 other end, the resistance 5R3 other end, 2 of amplifier 5LM3,5 pin ground connection, the end of the 1 pin connecting resistance 5R4 of amplifier 5LM3, resistance 5R4 other end ground connection, 7 pin of amplifier 5LM3 are unsettled, 3 of amplifier 5LM3,8 pin meet voltage+24V, the end of electric capacity 5C4, electric capacity 5C4 other end ground connection, 6 pin of amplifier 5LM3 connect 5 pin of amplifier 5LM1, and 8 pin of amplifier 5LM1 meet voltage+5V, the end of electric capacity 5C3, electric capacity 5C3 other end ground connection, the end of the 7 pin connecting resistance 5R9 of amplifier 5LM1,3 pin of connector CZ1,6 pin of another termination amplifier of resistance 5R9 5LM1, the end of resistance 5R10, resistance 5R10 other end ground connection, voltage 1V/mW connects 3 pin of amplifier 5LM2, the end of electric capacity 5C2, the electric capacity 5C2 other end, the 4 pin ground connection of amplifier 5LM2, the end of the 1 pin connecting resistance 5R5 of amplifier 5LM2,5 pin of connector CZ1,2 pin of another termination amplifier of resistance 5R5 5LM2, the end of resistance 5R6, resistance 5R6 other end ground connection, upward signal incoming level TEST2 connects 4 pin of amplifier 5LM4, the end of resistance 5R7, the resistance 5R7 other end, 2 of amplifier 5LM4,5 pin ground connection, the end of the 1 pin connecting resistance 5R8 of amplifier 5LM4, resistance 5R8 other end ground connection, 7 pin of amplifier 5LM4 are unsettled, and voltage+24V meets 3 of amplifier 5LM4,8 pin, the end of electric capacity 5C6, electric capacity 5C6 other end ground connection, 6 pin of amplifier 5LM4 connect 5 pin of amplifier 5LM2, and voltage+5V connects 8 pin of amplifier 5LM2,8 pin of connector CZ1, the end of electric capacity 5C5, electric capacity 5C5 other end ground connection, the end of the 7 pin connecting resistance 5R11 of amplifier 5LM2,7 pin of connector CZ1,6 pin of another termination amplifier of resistance 5R11 5LM2, the end of resistance 5R12, resistance 5R12 other end ground connection, 9 of connector CZ1,11 pin are unsettled, 15 of connector CZ1,16 pin ground connection, connector CZ1 is connected with I class or II class network management responder.

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