CN103595487A - A modularized network type PDH optical transceiver - Google Patents
A modularized network type PDH optical transceiver Download PDFInfo
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- CN103595487A CN103595487A CN201210286873.4A CN201210286873A CN103595487A CN 103595487 A CN103595487 A CN 103595487A CN 201210286873 A CN201210286873 A CN 201210286873A CN 103595487 A CN103595487 A CN 103595487A
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Abstract
The invention discloses a modularized network type PDH optical transceiver comprising an optical signal receiving end, an optical/electric converter, an electric signal demultiplexer, a D/A converter, an amplifilter and a user receiving end. An output end of the optical signal receiving end is connected with an input end of the optical/electric converter. An output end of the optical/electric converter is connected with an input end of the electric signal demultiplexer. An output end of the electric signal demultiplexer is connected with an input end of the D/A converter. An output end of the D/A converter is connected with an input end of the amplifier. An output end of the amplifier is connected with the user receiving end. An ADPLL phase-locked loop circuit is also connected between the amplifier and the user receiving end. The modularized network type PDH optical transceiver of the invention can effectively reduce signal jittering at an E1 interface.
Description
Technical field
The present invention relates to a kind of PDH optical transmitter and receiver, be specifically related to a kind of modular network type PDH optical transmitter and receiver.
Background technology
Telecommunications network in, use PDH optical transmitter and receiver more.This PDH optical transmitter and receiver series has good adaptability to traditional point to point link.The bit rate that it is unified, unified interface standard, for interconnected the providing between devices from different manufacturers may.And along with the developing rapidly of digital communication, be the needs that are applicable to Modern Telecommunication business development, and the needs of modernization telecommunication network management, PDH optical transmitter and receiver will constantly improve.Experience the most intuitively to client is exactly the stability of this network.PDH optical transmitter and receiver offers user's E1 interface, and the reason of shining into its shake has a variety of.And the shake meeting of e1 port signal brings use inconvenience to user, can allow user bring bad impression to the provider of network, directly affect the income of Network Provider.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and a kind of PDH optical transmitter and receiver is provided, and this PDH optical transmitter and receiver can effectively reduce E1 interface signal jitter problem.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A type PDH optical transmitter and receiver, it comprises light signal receiving terminal, light/electric transducer, signal of telecommunication demultiplexing, D/A converter, amplifilter and user's receiving terminal; The described output of light signal receiving terminal and the input of light/electric transducer are connected; The output of described light/electric transducer is connected with the input of signal of telecommunication demultiplexing; The described output of signal of telecommunication demultiplexing and the input of D/A converter are connected; The output of described D/A converter is connected with the input of amplifilter; The output of described amplifilter is connected with user's receiving terminal; Between described amplifilter and user's receiving terminal, be also connected with an ADPLL phase-locked loop circuit.That above-mentioned light/electric transducer adopts is HTB-GM03; That signal of telecommunication demultiplexing adopts is Canadian EVERTZ, is a kind of two-way multiplex/demultiplex module; D/A converter adopts DAC0830; Amplifilter adopts LFC1536.Light signal receiving terminal passes to light/electric transducer the signal receiving, light/electric transducer is converted to the signal of telecommunication by light signal, again by electrical signal transfer to signal of telecommunication demultiplexing, signal of telecommunication demultiplexing passes to D/A converter by signal, D/A converter changes digital signal to analog signal, through the amplification filtering of amplifilter, integrate again, pass to user.For the signal jitter that user receives is effectively reduced, before user's receiving terminal, connect an ADPLL phase-locked loop circuit.
Further technical scheme is:
Described user's receiving terminal comprises 4 road E1 digital signal interfaces and 1 road 100M Ethernet data interface or RS-232/485 data-interface.This device can improve 4 road E1 and 1 road 100M Ethernet or RS-232/485 data channel, and being particularly suitable for video conference monitoring, DDN extension etc. had both needed TDM passage again by the interconnected occasion of local area network (LAN).
Described ADPLL phase-locked loop circuit is between amplifilter and 4 road E1 digital signal interfaces.
Compared with prior art, the invention has the beneficial effects as follows:
1, between amplifilter and user's receiving terminal, be connected with an ADPLL phase-locked loop circuit, ADPLL phase-locked loop circuit can effectively reduce the information shake of interface, and shake index is much better than international standard.
2, this device is simple, is convenient to make.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is structure flow chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.Embodiments of the present invention include but not limited to the following example.
Embodiment
A kind of modular network type PDH optical transmitter and receiver as shown in Figure 1, it comprises light signal receiving terminal, light/electric transducer, signal of telecommunication demultiplexing, D/A converter, amplifilter and user's receiving terminal; The output of light signal receiving terminal is connected with the input of light/electric transducer; The output of light/electric transducer is connected with the input of signal of telecommunication demultiplexing; The output of signal of telecommunication demultiplexing is connected with the input of D/A converter; The output of D/A converter is connected with the input of amplifilter; The output of amplifilter is connected with user's receiving terminal; Between amplifilter and user's receiving terminal, be also connected with an ADPLL phase-locked loop circuit.User's receiving terminal comprises 4 road E1 digital signal interfaces and 1 road 100M Ethernet data interface or RS-232/485 data-interface.ADPLL phase-locked loop circuit is between amplifilter and 4 road E1 digital signal interfaces.
According to the above embodiments, can well complete the present invention.
Be as mentioned above embodiments of the invention.The present invention is not limited to above-mentioned execution mode, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (3)
1. a modular network type PDH optical transmitter and receiver, is characterized in that: it comprises light signal receiving terminal, light/electric transducer, signal of telecommunication demultiplexing, D/A converter, amplifilter and user's receiving terminal; The described output of light signal receiving terminal and the input of light/electric transducer are connected; The output of described light/electric transducer is connected with the input of signal of telecommunication demultiplexing; The described output of signal of telecommunication demultiplexing and the input of D/A converter are connected; The output of described D/A converter is connected with the input of amplifilter; The output of described amplifilter is connected with user's receiving terminal; Between described amplifilter and user's receiving terminal, be also connected with an ADPLL phase-locked loop circuit.
2. modular network type PDH optical transmitter and receiver according to claim 1, is characterized in that: described user's receiving terminal comprises 4 road E1 digital signal interfaces and 1 road 100M Ethernet data interface or RS-232/485 data-interface.
3. modular network type PDH optical transmitter and receiver according to claim 1 and 2, is characterized in that: described ADPLL phase-locked loop circuit is between amplifilter and 4 road E1 digital signal interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286873.4A CN103595487A (en) | 2012-08-14 | 2012-08-14 | A modularized network type PDH optical transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210286873.4A CN103595487A (en) | 2012-08-14 | 2012-08-14 | A modularized network type PDH optical transceiver |
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| Publication Number | Publication Date |
|---|---|
| CN103595487A true CN103595487A (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210286873.4A Pending CN103595487A (en) | 2012-08-14 | 2012-08-14 | A modularized network type PDH optical transceiver |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5940456A (en) * | 1996-06-20 | 1999-08-17 | Ut Starcom, Inc. | Synchronous plesiochronous digital hierarchy transmission systems |
| US20030227989A1 (en) * | 2002-06-07 | 2003-12-11 | Woogeun Rhee | Method and apparatus for clock-and-data recovery using a secondary delay-locked loop |
| CN101582691A (en) * | 2008-05-16 | 2009-11-18 | 上海全盛微电子有限公司 | De-twitter circuit based on fully digital phase-locked loop |
| CN102025421A (en) * | 2010-11-24 | 2011-04-20 | 天津欧迈通信技术有限公司 | Gigabit broadband isolation pseudo-synchronous digital hierarchical (PDH) optical transmitter and receiver |
| CN202696618U (en) * | 2012-08-14 | 2013-01-23 | 成都思迈科技发展有限责任公司 | Modularized network type PHD optical transmitter and receiver |
-
2012
- 2012-08-14 CN CN201210286873.4A patent/CN103595487A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5940456A (en) * | 1996-06-20 | 1999-08-17 | Ut Starcom, Inc. | Synchronous plesiochronous digital hierarchy transmission systems |
| US20030227989A1 (en) * | 2002-06-07 | 2003-12-11 | Woogeun Rhee | Method and apparatus for clock-and-data recovery using a secondary delay-locked loop |
| CN101582691A (en) * | 2008-05-16 | 2009-11-18 | 上海全盛微电子有限公司 | De-twitter circuit based on fully digital phase-locked loop |
| CN102025421A (en) * | 2010-11-24 | 2011-04-20 | 天津欧迈通信技术有限公司 | Gigabit broadband isolation pseudo-synchronous digital hierarchical (PDH) optical transmitter and receiver |
| CN202696618U (en) * | 2012-08-14 | 2013-01-23 | 成都思迈科技发展有限责任公司 | Modularized network type PHD optical transmitter and receiver |
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Application publication date: 20140219 |