WO2007069631A1 - 測定装置、測定方法、及び伝送回路 - Google Patents
測定装置、測定方法、及び伝送回路 Download PDFInfo
- Publication number
- WO2007069631A1 WO2007069631A1 PCT/JP2006/324817 JP2006324817W WO2007069631A1 WO 2007069631 A1 WO2007069631 A1 WO 2007069631A1 JP 2006324817 W JP2006324817 W JP 2006324817W WO 2007069631 A1 WO2007069631 A1 WO 2007069631A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- unit
- transmission
- electrical signal
- level
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
- H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
Definitions
- Measuring device measuring method, and transmission circuit
- the present invention relates to a measuring device, a measuring method, and a transmission circuit.
- the present invention relates to a measuring apparatus and a measuring method for measuring characteristics of a transmission circuit including an optical transmission system, and a transmission circuit capable of easily measuring the characteristics.
- a transmission circuit including an optical transmission system is known as a signal transmission system from a transmitting device to a receiving device.
- the transmission circuit includes, for example, a system that transmits an electrical signal, a system that converts an electrical signal into an optical signal, a system that transmits an optical signal, and a system that converts an optical signal into an electrical signal.
- the known pattern data is transmitted from the transmitting device and the receiving device receives the known pattern data and the known pattern.
- the transmission circuit is diagnosed by comparing the data.
- an object of one aspect of the present invention is to provide a measurement device, a measurement method, and a transmission circuit that can solve the above-described problems. This object is achieved by a combination of features described in the independent claims.
- the dependent claims define further advantageous specific examples of the present invention.
- a measuring apparatus for measuring a characteristic of a transmission circuit that transmits a signal, wherein the transmission circuit transmits an electric signal.
- the level measurement unit that detects the data value of the electric signal, the electric signal receiving unit that detects the data value of the electric signal, and the electric signal receiving unit
- a timing control unit that controls a latch timing for detecting a data value of the signal, and the measurement device includes a comparison unit that compares the data value of the electrical signal captured by the electrical signal receiving unit with a predetermined expected value; Reference Providing a setting control unit sequentially changing the Le and La Tutsi timing, a measuring device and a result storage unit for storing comparison results, reference
- the measuring apparatus includes an initial setting signal control unit that sequentially transmits a transmission signal indicating an H level and a transmission signal indicating an L level in advance to an electric signal transmission unit, and the electric signal transmission unit has an H level.
- the reference level is changed sequentially, and the reference level at which the data value of the electrical signal measured by the level measurement unit is switched to the transmission signal of H level and transmission signal of L level respectively.
- Detection of initial setting information detected in advance And an initial setting calculation unit that calculates a level change range in advance based on each reference level detected by the initial setting information detection unit.
- FIG. 4 is a diagram showing an example of a comparison result stored in a result storage unit 120.
- FIG. 5 is a diagram showing another example of the configuration of the measuring apparatus 200.
- the level measuring unit 34 detects the data value of the electrical signal by comparing the magnitude of the electrical signal output from the photoelectric conversion unit 32 with a predetermined reference level. For example, the level measuring unit 34 outputs an H level as the data value of the electric signal when the magnitude of the electric signal is larger than the reference level, and the electric level of the electric signal is equal to or lower than the reference level. L level is output as the data value of the signal.
- FIG. 2 is a diagram illustrating an example of the configuration of a measuring apparatus 200 that measures the characteristics of the transmission circuit 100.
- the measurement apparatus 200 includes a transmission system measurement unit 110, a result storage unit 120, and a setting control unit 130.
- the measuring apparatus 200 determines the reference level given to the level measuring unit 34 and the latch timing given to the receiving circuit 42 to the transmission circuit 100 including the optical transmission system, and the predetermined level change range and timing change. The results are sequentially changed within the range, and the comparison result in the comparison unit 48 is captured for each combination of the reference level and the latch timing.
- the measuring device 200 measures the characteristics of the transmission circuit 100 based on the comparison result.
- the setting control unit 130 causes the pattern generation unit 12 to generate a predetermined pattern signal.
- the pattern signal may be a pseudo random pattern signal.
- the transmission circuit 100 is not connected. Force Having Turn Generator 12 and Driver 14
- the measuring device 200 force S pattern generator 12 and driver 14 may be included. In this case, the measuring apparatus 200 generates a transmission signal and inputs it to the transmission circuit 100.
- the setting control unit 130 controls whether or not all reference levels to be set have been set. For example, the setting control unit 130 determines whether or not the reference level is changed with a predetermined resolution over the entire level change range.
- the setting control unit 130 sequentially changes the latch timing within a predetermined timing change range.
- the setting control unit 130 For 130 the reference level can be changed within a predetermined level change range each time the latch timing is changed.
- FIG. 4 is a diagram illustrating an example of the comparison result stored in the result storage unit 120.
- the result storage unit 120 stores the comparison result in the comparison unit 48 for each reference level and latch timing.
- Figure 4 shows an example of the distribution of comparison results when the horizontal axis is the latch timing and the vertical axis is the reference level.
- the measuring apparatus 200 calculates the deterministic jitter component and the random jitter component of the transmission circuit 100 by detecting the comparison results in a plurality of different test periods for each timing setting. Good. Random jitter components in the transmission circuit 100 can be generated based on the amount of change in the timing setting width indicating the path comparison result in each test cycle.
- FIG. 5 is a diagram showing another example of the configuration of the measuring apparatus 200.
- the measurement apparatus 200 in this example further includes an initial setting calculation unit 140, an initial setting information detection unit 150, and an initial setting signal control unit 160 in addition to the configuration of the measurement apparatus illustrated in FIG.
- Other components have the same functions as the components denoted by the same reference numerals in FIG.
- the initial setting information detection unit 150 sequentially changes the reference level supplied to the level measurement unit 34 when the pattern generation unit 12 transmits a transmission signal of H level and L level. For example, while the transmission signal indicates the H level, the initial setting information detection unit 150 may sequentially set a setting value that gradually decreases by a predetermined value from the upper limit level setting value that can be set in the measurement control unit 36. . Further, while the transmission signal indicates the L level, the initial setting information detection unit 150 may sequentially set setting values that gradually increase from the lower limit level setting value that can be set in the measurement control unit 36 by a predetermined value.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Tests Of Electronic Circuits (AREA)
- Optical Communication System (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007550190A JPWO2007069631A1 (ja) | 2005-12-14 | 2006-12-13 | 測定装置、測定方法、及び伝送回路 |
DE112006003431T DE112006003431T5 (de) | 2005-12-14 | 2006-12-13 | Messvorrichtung, Messverfahren und Übertragungsschaltung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/300,684 | 2005-12-14 | ||
US11/300,684 US7469196B2 (en) | 2005-12-14 | 2005-12-14 | Measuring a characteristic of a transfer circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007069631A1 true WO2007069631A1 (ja) | 2007-06-21 |
Family
ID=38138341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/324817 WO2007069631A1 (ja) | 2005-12-14 | 2006-12-13 | 測定装置、測定方法、及び伝送回路 |
Country Status (5)
Country | Link |
---|---|
US (2) | US7469196B2 (ja) |
JP (1) | JPWO2007069631A1 (ja) |
KR (1) | KR100970148B1 (ja) |
DE (1) | DE112006003431T5 (ja) |
WO (1) | WO2007069631A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7469196B2 (en) * | 2005-12-14 | 2008-12-23 | Advantest Corporation | Measuring a characteristic of a transfer circuit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02137550A (ja) * | 1988-11-18 | 1990-05-25 | Fujitsu Ltd | 受信系最適化方式 |
JPH06120898A (ja) * | 1992-10-08 | 1994-04-28 | Hitachi Ltd | 光受信器の試験方法 |
WO2004095736A1 (ja) * | 2003-04-23 | 2004-11-04 | Fujitsu Limited | 受信誤り率制御装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2069793B (en) * | 1979-12-29 | 1985-02-13 | Canon Kk | Half-tone facsimile |
JPH0831885B2 (ja) * | 1987-06-08 | 1996-03-27 | 富士通株式会社 | 出力波形測定方法 |
JPH01160237A (ja) * | 1987-12-17 | 1989-06-23 | Fujitsu Ltd | 光送信回路及び光受信回路の試験方式 |
JPH0454043A (ja) * | 1990-06-22 | 1992-02-21 | Fujitsu Ltd | 受信データ識別回路 |
US6249363B1 (en) * | 1997-07-23 | 2001-06-19 | Hitachi, Ltd. | Optical communication method, optical linking device and optical communication system |
US6496288B2 (en) * | 1997-10-17 | 2002-12-17 | Fujitsu Limited | Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatus |
JP3206737B2 (ja) * | 1998-03-27 | 2001-09-10 | 日本電気株式会社 | ラッチ回路 |
JP3477382B2 (ja) | 1998-11-20 | 2003-12-10 | ペンタックス株式会社 | 一眼レフカメラ |
JP3309158B2 (ja) * | 1999-11-12 | 2002-07-29 | アンリツ株式会社 | ディジタル信号の品質評価装置 |
US6501288B1 (en) * | 2000-09-28 | 2002-12-31 | Schlumberger Technologies, Inc. | On-chip optically triggered latch for IC time measurements |
JP2003324393A (ja) * | 2002-02-26 | 2003-11-14 | Matsushita Electric Ind Co Ltd | 双方向光伝送システム並びにそれに用いられる親局及び子局 |
US6911851B2 (en) * | 2002-11-21 | 2005-06-28 | Matsushita Electric Industrial Co., Ltd. | Data latch timing adjustment apparatus |
US7667764B2 (en) * | 2004-06-04 | 2010-02-23 | Konica Minolta Holdings, Inc. | Image sensing apparatus |
US7469196B2 (en) * | 2005-12-14 | 2008-12-23 | Advantest Corporation | Measuring a characteristic of a transfer circuit |
-
2005
- 2005-12-14 US US11/300,684 patent/US7469196B2/en not_active Expired - Fee Related
-
2006
- 2006-12-13 WO PCT/JP2006/324817 patent/WO2007069631A1/ja active Application Filing
- 2006-12-13 JP JP2007550190A patent/JPWO2007069631A1/ja active Pending
- 2006-12-13 DE DE112006003431T patent/DE112006003431T5/de not_active Withdrawn
- 2006-12-13 KR KR1020087016501A patent/KR100970148B1/ko not_active IP Right Cessation
-
2008
- 2008-11-18 US US12/273,395 patent/US7676343B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02137550A (ja) * | 1988-11-18 | 1990-05-25 | Fujitsu Ltd | 受信系最適化方式 |
JPH06120898A (ja) * | 1992-10-08 | 1994-04-28 | Hitachi Ltd | 光受信器の試験方法 |
WO2004095736A1 (ja) * | 2003-04-23 | 2004-11-04 | Fujitsu Limited | 受信誤り率制御装置 |
Also Published As
Publication number | Publication date |
---|---|
DE112006003431T5 (de) | 2008-10-02 |
US20070131848A1 (en) | 2007-06-14 |
JPWO2007069631A1 (ja) | 2009-05-21 |
US20090074420A1 (en) | 2009-03-19 |
KR100970148B1 (ko) | 2010-07-14 |
US7469196B2 (en) | 2008-12-23 |
KR20080085011A (ko) | 2008-09-22 |
US7676343B2 (en) | 2010-03-09 |
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