CN202268963U

CN202268963U - Ethernet coaxial cable transmission local end module control circuit for cable television

Info

Publication number: CN202268963U
Application number: CN2011204121505U
Authority: CN
Inventors: 饶思霆; 高洋; 王伟民; 张怡
Original assignee: CHANGSHU GAOSHIDA OPTOELECTRONIC TECHNOLOGY Co Ltd
Current assignee: CHANGSHU GAOSHIDA OPTOELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2011-10-26
Filing date: 2011-10-26
Publication date: 2012-06-06
Anticipated expiration: 2021-10-26

Abstract

The utility model relates to an Ethernet coaxial cable transmission local end module control circuit for a cable television and belongs to the technical field of the cable television. The Ethernet coaxial cable transmission local end module control circuit comprises capacitors C1 to C64, resistors R1 to R65, light emitting diodes D1 to D4, diodes D5 to D7, inductors L1 to L12, triodes V1 to V5, a signal coupler Z1, crystal oscillators Y1 to Y2, a socket J1, an Internet access RJ1, chips U1 to U5, U7 to U8 and Q1, and a transformer U6, wherein the U1 is an INT6400 chip, the U2 is an IP101A chip, the U3 is a W9825G6JH-6 chip, the U4 is an INT1400chip, the U5 is a 25Q16BWSIG chip, the U6 is an H1601CG transformer, the U7 is a TD1401chip, the U8 is an SY8009, and the Q1 is an LM1117F chip. The Ethernet coaxial cable transmission local end module control circuit has the advantages that the noise gathering is small, the provided bandwidth is wide, the Ethernet coaxial cable transmission local end module control circuit conforms to the IP utilization, the average housing transformation cost is low, the upgrading and volume expansion is convenient, and the reliability is high.

Description

Cable TV ethernet coaxial cable transmission local side module control circuit

Technical field

The utility model relates to a kind of NGB (Next Generation Broadcasting that the cable TV network integration of three networks is transformed that is used for; Broadcasting and television network of future generation) ethernet coaxial cable transmission local side module control circuit; Belong to the cable TV technical field, especially a kind of local side module of hybrid fiber coax EOC (transmission of the Ethernet Over Cable ethernet coaxial cable) network rebuilding based on the cable TV transmitted in both directions

Background technology

; The Department of Science and Technology and General Bureau of Radio, Film and Television sign " national high performance wide-band-message net and Chinese broadcasting and television network autonomous innovation cooperation agreement book of future generation " jointly; In " cooperation agreement book ", propose the notion of NGB first, indicated the formal departure in China Broadcast & Television NGB epoch.In the Executive Meeting of the State Council that 2010 beginning of the years, the Premier Wen Jiabao held; Decision accelerates to advance the integration of three networks of telecommunications network, broadcasting and television network and the Internet; Proposed two in the meeting and gone on foot the interim target of walking: 2010～2012; Two-way entering pilot is explored and is formed standardized and orderly policy system of carrying out of the integration of three networks and the system mechanism of ensureing.2013～2015, sum up to promote the pilot experience, round Realization integration of three networks development, the popularization and application fused business basically forms the network industry general layout of adequate competition.Therefore applicant's integration of three networks local side controller meets guide " based on the integration of three networks evolution technology of new network architectural framework " requirement fully.NGB local side controller is the network intermediate products of broadcasting and TV NGB networking, merges cable TV signal and data-signal, is implemented in transmission cable TV and data communication service in original hfc plant.Develop the integral telecommunication business through cable TV, promptly cable TV network also possesses functions such as online, data transmission, video request program, household's IT application except transmitting TV programme.1997 after the DOCSIS1.0 issue; Domestic and international HFC (Hybrid Fiber Coax; Hybrid fiber coax) the network bi-directional transformation is mainly based on North America cable TV modulator-demodulator product standard (DOCSIS); Be CMTS, upconverter, Operation & Maintenance System server (Oss Server) and cable modem equipment such as (CM, Cable Modem) to be set be implemented in transmission CATV signal and data communication service in the hfc plant on the basis of hfc plant system configuration.But the CMTS technology can only be carried out data communication service in the hfc plant system; Can not realize common telephone service etc.; On multi-service realizes, exist not enoughly, improvement cost is too high, solve simultaneously upstream noise converge the technical support that needs in a short time also difficulty reason such as properly settle; Cause from the whole nation on the whole, the utilization of DOCSIS technology is also unsuccessful.Simultaneously should technology 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 to accomplish forwarding of data, protocol processes and rf modulations demodulation function in the data communication network;

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. accomplished 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., on multi-service realizes, exist not enough.Simultaneously, use the CMTS technology in the hfc plant system, to carry out data communication service, some technical problem below also existing:

are noise collection effect 1.: for most of cable television operators, upstream noise is a ubiquitous problem, especially at low-frequency band (< 65MHz).Common this noise is by terminal box in electric motor, thunder and lightning, HAM, shortwave broadcasting even sunspot and the users home; Imbed the cable quality in the wall; Private connects non-standard component, and situation such as all kinds of interface adhesive plaster of family connection line cause that it will destroy the transfer of data of data feedback channel (reverse 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 the technical support that needs of maintenance and operation troubles eliminating China's most of areas in a short time also difficulty properly settle.

. 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, Media Access Control) learning management is only arranged, the bridges forward ability; Agreement (IP, the Internet Protocol) routing device that needs to interconnect between the external network is accomplished building of business platform.

. 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.

. cost is high per family: though CMTS covering cost is low, the user need be equipped with CM and do broadband access and online, and price comparison is high.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.

. 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, maintenance management is complicated, and the upgrade expanding of rear end IP metropolitan area network is caused great pressure

Summary of the invention

The purpose of the utility model is that a kind of cable TV ethernet coaxial cable transmission local side module control circuit will be provided, and its noise collection effect is little, and the bandwidth that provides is high; Meet IPization; Improvement cost is lower per family, is convenient to upgrade expanding, and reliability is high.

the utility model is owing to adopted above technical scheme, and its noise collection effect is little, and the bandwidth that provides is high, meets IPization, and improvement cost is lower per family, is convenient to upgrade expanding, and reliability is high.

Description of drawings

Fig. 1 is the schematic diagram of the utility model.

Embodiment

are referring to figure: cable TV ethernet coaxial cable transmission local side module control circuit is to power on back output 12V direct voltage through pressure regulation chip Q1 output 10V direct voltage, lowering and stabilizing blood pressure chip U7 output 3.3V direct voltage, export the 1V direct voltage through synchronous buck conversion chip U8; The stored program of U5 chip the inside is read in local side module work, master chip U1 broadband power line communication chip, and program is mapped in the U3 high-speed synchronous storage chip handles; Realization is to the modulation function of signal; The upward signal demodulation that it will be come from the EOC terminal also breaks into IP and wraps and pass to the Internet internet, will carry out from the downstream signal that Internet gets into sending to the EOC terminal after OFDM (the Orthogonal Frequency Division Multiplexing ,-orthogonal frequency division multiplexi) modulation; The U4 chip amplifies the chip to U1 with up radiofrequency signal; Be transferred to the EOC terminal equipment after descending radiofrequency signal amplified, in order to guarantee the transmission quality of radiofrequency signal, connect a low pass filter at the output of radio frequency signal amplifiers; Remove the noise signal more than the 47MHz; Allow the signal of 3.5MHz to 30MHz to pass through, dateout, U2 single port Fast Ethernet transceiving chip and U3 high-speed synchronous storage chip carry out the exchange of data; Is data transaction network signal; Through the conversion of U6 network transformer, connect ethernet coaxial cable transmission local side module management circuit by the RJ1 network interface, accomplish the controlled function of local side business board module.

power supply line inserts socket J1, forms filter circuit by inductance L 11, L12, capacitor C 64, output dc voltage 12V; The pressure regulation filter circuit output dc voltage 10V that direct voltage 12V input is made up of chip Q1, resistance R 47, R65, capacitor C 60-C63; The lowering and stabilizing blood pressure filter circuit output dc voltage 3.3V that direct voltage 12V input is made up of chip U7, resistance R 42, R43, R63, capacitor C 40-C47, inductance L 8, diode D7; The step-down translation filtering circuit output dc voltage 1V that direct voltage 3.3V input is made up of chip U8, inductance L 9, L10, resistance R 44-R46, R64, capacitor C 48-C59; Chip U1, U3, U5, crystal oscillator Y2, Light-Emitting Diode D1-D4, triode V1, capacitor C 22-C28, resistance R 9-R24, R48-R55 form routine processes, data transaction and operating state indicating circuit; One the tunnel outputs to rf signal amplification circuit, and another road outputs to data transaction network signal circuit; Chip U2, transformer U6, network interface RJ1, Light-Emitting Diode D5, crystal oscillator Y1, inductance L 7, capacitor C 31-C39, resistance R 25-R41, R57-R62 form data transaction network signal circuit to ethernet coaxial cable transmission local side module management circuit; Chip U4, diode D6, triode V2-V5, capacitor C 1-C17, resistance R 1-R8, inductance L 1-L6, signal coupler Z1 form rf signal amplification circuit and export signal to the EOC terminal through low-pass filter circuit.Wherein C1-C9 is a resonant capacitance, and C10-C19 is the high frequency capacitance, and C20-C23 is concussion electric capacity, and C24-C64 is a high-frequency filter capacitor; R1-R47 is a current-limiting resistance, and R48-R65 is a dropping resistor, and D1-D5 is a Light-Emitting Diode, and D6, D7 are the protection diode; L1-L6 is a resonant inductance, and L7-L12 is the High frequency filter inductance, and Z1 is a signal coupler, and Y1, Y2 are crystal oscillator; V1-V5 is a triode, and J1 is the 1X2 supply socket, and RJ1 is the RJ45 network interface; Q1 is a LM1117F low pressure differential pressure regulation chip, and U1 is an INT6400ATG broadband power line communication chip, and U2 is an IP101A single port Fast Ethernet transceiving chip; U3 is a W9825G6JH-6 high-speed synchronous storage chip, and U4 is the AFE chip for driving of INT1400, and U5 is a 25Q16BWSIG serial ports FLASH chip; U6 is the H1601CG network transformer, and U7 is a TD1410 lowering and stabilizing blood pressure chip, and U8 is a SY8009 synchronous buck conversion chip.

are changed 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 utility model is the two-way net equipment of a cable TV according to the up-to-date development of the NGB of SARFT(The State Administration of Radio and Television) television network broadcast requirement; Its inner integrated optical receiver module, the ONU module of transfer of data, EOC of CATV transmission; The head end module; Be 1 product that the two-way net of EPON (Ethernet Passive Optical Network, ethernet passive optical network) network technology is transformed, its following points technical advantage:

are noise collection effect 1.: the utility model has adopted HomePlug (plug-in alliance of family) AV technical standard; In this frequency range; Divided 2351 number of sub-carrier, each subcarrier takies and is about 24.414kHz, adopts anti-interference stronger OFDM modulation system at present; In 2351 number of sub-carrier that its working frequency range uses; Each subcarrier all can carry out BPSK, QPSK, 8QAM, 16QAM, 64QAM, 256QAM, 1024QAM and 4096QAM modulation separately, and each subcarrier spectrum has 1/2 overlapping quadrature among the OFDM, has improved the availability of frequency spectrum of OFDM modulation system like this; Simultaneously adopt Turbo FEC error checking again, promoted the antijamming capability of system preferably.

. provide the OLT equipment of very high bandwidth: EPON can transmit the 10G bandwidth at main line, 32 ONU equipment of maximum support can better be supported future network construction and planning and development.The message transmission rate of NGB local side controller can reach 250-350M bps, is tens times of CMTS.

. meet the IPization trend: at down direction; Adopted time-division multiplex technology (TDM), data-signal is broadcast to each terminal equipment, and the terminal can make a decision on physical layer voluntarily; Receive to give it self Frame, abandon the Frame that those give other terminal.At up direction; Adopt the EoCMA mode; In conjunction with the advantage of traditional nothing management CSMA and TDMA, EoCMA has utilized the simple and flexible property of CSMA, and the while can provide the assurance bandwidth of TDMA mode; The generation that especially in multi-terminal network, can avoid conflict well, thus the entire system throughput improved.

. cost is relatively low per family: can make full use of coaxial cable, branch distributor resource on the existing network, the construction of need not registering one's residence, construction volume significantly reduces, and transformation speed is fast.But therefore cross-over connection subscriber's amplifier and trunk amplifier need not carry out the network rebuilding.Can " fix a point " to transform, can be that unit transforms with optical node even amplifier, flexible, thereby realize developing at a progressive speed.Adopt passive splitter to realize networking at the optical fiber Access Layer, fully save the fiber optic backbone resource.

. be convenient to upgrade expanding: 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.The EPON system to the local side resource occupation seldom, the degree of modularity is high, system's initial stage drops into low, expansion easily, rate of return on investment is high.When the initial stage user more after a little while; Adopt 1 EOC local side module; Register one's residence bandwidth and the ever-increasing requirement of number of users along with integration of three networks broadcasting and TV NGB different phase; In equipment, increase EOC local side module, can realize 4 EOC local side modules at most, guarantee that user's bandwidth is progressive from 5-10Mbps, 20-30Mbps, final 100Mbps.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.

. fail safe, reliability height; Maintainable good: as downlink data to be adopted 128-bit AES coding encrypting, guarantee that each user isolates fully, for preventing that illegal ONU is connected to network and steals data; Need the authentication of ONU to authorize, guarantee legal ONU registration.The EPON system is two layers of switching system, is the safety of better guarantee user profile, and system supports Private VLAN to realize two layers of isolation, each user's that adequately protects information security.Can avoid the malicious attack of automatic network to cause user network congested at the specific broadcast packet filtering rule of definition, the broadcast packet control law be attacked through the broadcasting that the threshold value that defines broadcast packet filters out those malice, is that system and customer service keep stablizing.Adopt high-quality device, can adapt to outdoor high and low temperature applied environment.The inner EOC head end of the utility model is managed concentratedly user terminal, and very strong line diagnosis function is provided.

. QoS (Quality of Service, service quality) Guarantee: to different business such as Internet access to netwoks business, video on demand business, VoIP speech businesses; New generation product can be through the priority of automatic distinguishing different business such as VLAN sign or IP ToS; And can guarantee the professional preferential of high priority according to different user or cell scenario demand.

8, up-downgoing speed limit: to the difference of paying customer's grade, can set different flow restriction to the different brackets user, allocated bandwidth is flexible, serves guaranteed.

Wherein:

EPON: being ethernet passive optical network, is the best supporting body of CHINA RFTCOM Co Ltd digitlization, fiberize, IPization, and it is made up of ONT Optical Network Terminal (OLT), optical network unit (ONU), passive optical splitter (ODN);

OLT: be ONT Optical Network Terminal, responsible EPON system external resource is connected with the terminal use's, converges external business, coordinates far-end ONU, sends " door message (Gates) " and is used for distributing time slot to ONU;

ONU: be optical network unit, be responsible for user's access, professional covering adopts " report message (Reports) " to obtain time slot or ask time slot to OLT;

EOC: being ethernet coaxial cable transmission head end, is that ethernet signal is transferred to the ethernet user through coaxial cable distribution net after through complex process such as modulation

Claims

1. One kind of the central office cable Ethernet coax module control circuit comprising capacitors C1-C64, resistors R1-R65, the light emitting diodes D1-D4, the diode D5-D7, the inductor L1-L12, the transistor V1-V5 , signal coupler Z1, crystal Y1-Y2, socket J1, network port RJ1,, chip U1-U5, U7-U8, Q1, transformers U6, which is INT6400 chip U1, U2 is IP101A chip, U3 is W9825G6JH-6 chips , U4 is INT1400 chip, U5 is 25Q16BWSIG chip, U6 is H1601CG transformer, U7 for the TD1401 chip, U8 is SY8009 chip, Q1 is LM1117F chip, chip U1 is 46,47,49,61-65,67,75,82, 84,88,89,98,103,116,117,124,131,138,144,146,148-151,165 feet to the DC voltage 1V, the chip U1 48,50,52,60,68,74, 83,97,102,130,145,147,152,164 feet to the DC voltage 3.3V, the chip U1 76-81,90-95,104-109,118-123,132-137,167,168 feet grounded , the chip U1 6,7,9,11,19,20,23,24,25,27,34,51,71,72,87,113,114,139,140,153,154,158,166, 174,178,186,188,190,193 feet vacant, the chip U1 185,171,170,157,155,142,129,127,99,101,73,57,59,44,43,31,16 , respectively, then the chip U3 1,3,18,4,32,2,17,15,30,29,45,58,100,115,128,141,143,156,169,183,184 foot 2, 4,5,7,8,10,11,13,15-26,29-37,39,42,44,45,47,48,50,51,53 feet, feet dangling chip U3 is 6,40, chip U3 is 1,3,9,14,27,43,49 feet, capacitors C24-C28 of a termination DC voltage 3.3V, capacitor C24-C28 of the other end, the chip of U3 12,28,41,46, 52,54 feet grounded, chip U1 is 85 feet then resistance R9, R10 at one end, the other end of the chip resistor R9 U3 of 85 feet, the other end of the resistor R10 chip U1 is 86 feet, 42 feet to the U1 chip resistor R11, R12 at one end, the other end of resistor R11 emitter of transistor V1, V1 grounded base transistor, the transistor V1 collector is connected to a DC voltage 3.3V, the other end of the chip resistor R12 U5 3 feet, 163 feet to the chip U1 chip U5 2 feet, 177 feet to the chip U1 chip U5 pin 1, pin 4 Ground U5 chip chip chip U1 U5 176 feet to 5 feet, 191 feet to the chip U1 U5 6-foot chip, the chip U5 7-8 feet, capacitors C29, C30 termination of a DC voltage 3.3V, capacitor C29, C30 the other end, the chip U1 is 56 feet to the crystal Y2, one end of capacitor C22 chip U1 is 70 feet to the crystal Y2 the other end, one end of the capacitor C23, a capacitor C22, C23 of the other end, the chip U1 189 feet to one end of resistor R13, a light emitting diode D4 anode, a light emitting diode D4 cathode connected to one end of the resistor R14, resistors R13, R14 the other end of the connected DC voltage 3.3V, the chip U1 55,66,159,162,173,175,192 feet resistors R18-R24 are respectively connected to one end of resistor R18-R24 the other end of the DC voltage of 3.3V, the chip U1 is 161 feet connected resistors R17, R56 at one end, the other end of resistor R56, the resistor R17 the other end of the light emitting diode D3 cathode, a light emitting diode D3 and negative ground, the chip U1 160 feet to one end of resistor R15, resistor R15 and the other end light diode D1 anode, the chip U1 187 feet to one end of resistor R16, resistor R16 emitting diode D2 and the other end of the cathode, the light emitting diodes D1, D2 negative ground, the chip U1 pin 28,53,54,69,96,110 respectively connected to one end of resistor R48-R53, R48-R53 resistor to the other end of the chip resistor U1 is 111 feet to R54, capacitor C14 at one end, the chip U1 is 112 feet to resistance R55, one end of capacitor C12, resistors R54, R55 the other end of the capacitor C12, one end of the other end of capacitor C13, the chip U4, 2 feet, the other end of capacitor C14 the other side of capacitor C13, U4, 3 feet chip, the chip U4, 1,4,7,16 , 19,23,24,31,33 pin grounded, the 25-foot chip U4 capacitor C15 connected to one end of the other end of capacitor C15 26-foot chip U4 chip U4, 8,32 feet to the DC voltage 3.3V, the chip U4 is 5 feet end of the resistor R6, the other end of the resistor R6 resistor R7, one end of the capacitor C16, the capacitor C16 is the other end of the chip U1 125 feet, the other end of resistor R7 resistor R8, one end of the capacitor C17, The other end of the capacitor C17 126 feet the chip U1, the other end of resistor R8 chip U4, 6 feet, 20 feet to the chip U4, the light emitting diode D6 cathode, one end of the resistor R5, the other end of the resistor R5 collector of the transistor V5, One end of capacitor C11, transistor emitter connected to a DC voltage V5 10V, V5 grounded base transistor, capacitor C11 and the other end signal coupler Z1 3 feet, signal coupler Z1 2 feet grounded negative pole diode D6 chip U4, 22 feet, one end of the resistor R4, the other end of resistor R4 V4 collector transistor, one end of the capacitor C10, the transistor emitter connected to the DC voltage V4 10V, V4 grounded-base transistor, the other end of capacitor C10 is the Z1 signal coupler 1 foot, 29 foot U4 chip resistor R3 is connected at one end, the other end of the resistor R3 30-foot chip U4, U5's 9,10,11,12,13,14,15 foot chip are connected to the chip U1 196, 182,195,181,194,179,180 feet, 27 feet U4 chip capacitor C18 connected to one end, the other end of capacitor C18 chip U4, 28 feet, 21 feet U4 chip, transistor V2 emitter connected to a DC voltage 10V chip U4, pin 17 connected to the collector transistor V2, one end of the capacitor C1, transistor V2 base grounded, the other end of the capacitor C1 inductor L1, one end of the capacitor C2, the other end of the capacitor C2 inductor L2, capacitor C3 end , the other end of the capacitor C3 inductor L3, a capacitor C7 end, the other end of the inductance of an inductor L3 L4, one end of the capacitor C8, the other end of the inductor L4 capacitor C9, one end of the resistor R2, the other end of the resistor R2 signal Z1 coupler 6 feet, 18 feet to the chip U4, V3 collector transistor, one end of capacitor C4, V3 grounded-base transistor, the transistor emitter connected to the DC voltage V3 10V, capacitor C4 and the other end of the other end of the inductor L1, one end of the capacitor C5, the capacitor C5 and the other end of the other end of the inductor L2, capacitor C6 to one end of capacitor C6 inductor L5 and the other end to one end of the other end of the capacitor C7, the inductor L5, one end of the other end of the inductor L6, The other end of the capacitor C8, the other end of the inductor L6 other end of the capacitor C9, one end of the resistor R1, the other end of the resistor R1 signal coupler 4 feet of Z1, Z1 signal coupler pin 5 of the output data, the chip U2, 1-7,16,18-26 feet respectively, then the chip U1 33,5,35,36,21,22,8,10,38,12,26,40,39,37,41,13,14 feet, 172 U1 chip resistor R40 connected to one end of the foot, the other end of the chip resistor R40 42 feet of U2, U2 is 37-39,41,44 pin chip resistors R29-R25 are respectively connected to one end of resistors R25-R29 the other end of the , one end of capacitor C31-C34, chip U2, 14,36,48 feet to the DC voltage 3.3V, capacitors C31-C34 of the other end, the chip ground pin of U2 11,17,27,28,29,35,45 , the chip capacitors on pin 32 of U2 C19, inductance L7, resistor R30 at one end, the other end of resistor R30 end of capacitor C38, the transformer U6, 2 feet, 8 feet of U2 chip capacitors on C19, the other end of inductor L7, One end of resistor R31, the other end of resistor R31 capacitor C37 end, transformer U6, 7 feet, 34 feet U2 chip resistor R32 connected to one end of a transformer U6 feet, 33 feet U2 chip resistor R33 connected to one end, Transformers 3 feet of U6, resistors R32, R33 and the other end to one end of the capacitor C35, 31 feet of U2 chip resistor R34 connected to one end of the transformer U6, 6 feet, 30 feet of U2 chip resistor R35 connected to one end of the transformer U6 8 feet, resistors R34, R35 and the other end to one end of the capacitor C36, C35-C38, another capacitor is grounded, U6, 4,5,9,12,13 feet dangling transformer, the transformer respectively foot of U6 16,14,11 access network port RJ1 1-3 feet, 10 feet to the transformer U6 one end of resistor R36, transformers U6, 15 feet to one end of resistor R37, network port RJ1 4,5 feet to one end of resistor R38, the network port RJ1 6 feet dangling, network port RJ1 7,8 feet to one end of resistor R39, resistors R36-R39 the other end of capacitor C39 at one end, the other end of capacitor C39 to the 12-foot chip U2 resistor R41 connected to one end of resistor R41 The other end of the light emitting diode D5 anode, a light emitting diode D5 cathode grounded pin 9,10,13,15,40,43 chip U2 is connected to resistors R57-R62, respectively, one end of the resistor R57-R62 and the other end, the chip U2 46 feet to the crystal Y1, capacitor C20 to one end of the chip U2 is 47 feet to the other end of the crystal Y1, one end of capacitor C21, capacitors C20, C21 and the other end, the socket pin 1 of J1 inductor L12 is connected to one end of the socket J1 pin 2 connected to one end of the inductor L11, L11 the other end of the inductor capacitor C64 at one end and output DC voltage of 12V, capacitor C64, the other end of the inductor L12, the DC voltage is 12V then chips U7 2 feet, capacitor C40, resistor R42 at one end, the other end of capacitor C40, the other end of the chip resistor R42 U7 7 feet, feet dangling chips U7, 1,5,6,8, chips U7, 3 feet to one end of the inductor L8, diode D7 cathode , the other end of the inductor L8 resistor R43, capacitors C41-C47 and the output end of the DC voltage 3.3V, the other end of resistor R43 is one end of resistor R63, resistor R63, capacitors C41-C47 the other side of the diode D7 anode, chips U7, 4 feet grounded, the DC voltage 3.3V tapped inductor L9 end, the other end of the inductor L9 capacitors C48, C49, one end of the resistor R44, the chip U8, 4 feet, capacitors C48, C49 and the other end, the resistor R44 of the the other end of a foot chip U8, capacitor C51 at one end, the chip capacitor connected pin 3 of U8 C52, C53, inductor L10, one end of resistor R46, capacitors C51, C52, C53 of the other end, the other end of resistor R46 One end of resistor R45, the resistor R45 the other end of resistor R64, capacitor C50 and one end of the chip U8, 5 feet, a resistor R64, capacitor C50 and the other end, the other end of the inductor L10 capacitors C54-C59 and the output end of the DC voltage of 1V, capacitors C54-C59 of the other end, the DC voltage 12V Vin Q1 is connected to the chip pin Vss pin is connected to the chip resistor of Q1 R47, R65 at one end, the other end of the chip resistor R47 of Q1 Vout pin, capacitors C60- C63 one end of the output DC voltage 10V, resistor R65, capacitors C60-C63 and the other end to...。