CA1108261A - Fault locating apparatus for digital transmission system - Google Patents
Fault locating apparatus for digital transmission systemInfo
- Publication number
- CA1108261A CA1108261A CA277,262A CA277262A CA1108261A CA 1108261 A CA1108261 A CA 1108261A CA 277262 A CA277262 A CA 277262A CA 1108261 A CA1108261 A CA 1108261A
- Authority
- CA
- Canada
- Prior art keywords
- phase
- output
- rails
- test pattern
- bitstreams
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 230000003111 delayed effect Effects 0.000 claims abstract description 4
- 230000010363 phase shift Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 239000000969 carrier Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 230000000295 complement effect Effects 0.000 abstract 1
- 230000002950 deficient Effects 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 101100536354 Drosophila melanogaster tant gene Proteins 0.000 description 2
- 241001108995 Messa Species 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000012956 testing procedure Methods 0.000 description 2
- 101100152598 Arabidopsis thaliana CYP73A5 gene Proteins 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 241000896693 Disa Species 0.000 description 1
- 235000019227 E-number Nutrition 0.000 description 1
- 239000004243 E-number Substances 0.000 description 1
- 101000871498 Homo sapiens m7GpppX diphosphatase Proteins 0.000 description 1
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 241000272168 Laridae Species 0.000 description 1
- 241000283986 Lepus Species 0.000 description 1
- 101100496106 Mus musculus Clec2f gene Proteins 0.000 description 1
- MIQYPPGTNIFAPO-CABCVRRESA-N PS(6:0/6:0) Chemical compound CCCCCC(=O)OC[C@@H](OC(=O)CCCCC)COP(O)(=O)OC[C@H](N)C(O)=O MIQYPPGTNIFAPO-CABCVRRESA-N 0.000 description 1
- 241000429017 Pectis Species 0.000 description 1
- 241000022563 Rema Species 0.000 description 1
- NGBFQHCMQULJNZ-UHFFFAOYSA-N Torsemide Chemical compound CC(C)NC(=O)NS(=O)(=O)C1=CN=CC=C1NC1=CC=CC(C)=C1 NGBFQHCMQULJNZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- CVSVTCORWBXHQV-UHFFFAOYSA-N creatine Chemical compound NC(=[NH2+])N(C)CC([O-])=O CVSVTCORWBXHQV-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 102100033718 m7GpppX diphosphatase Human genes 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- SYOKIDBDQMKNDQ-XWTIBIIYSA-N vildagliptin Chemical compound C1C(O)(C2)CC(C3)CC1CC32NCC(=O)N1CCC[C@H]1C#N SYOKIDBDQMKNDQ-XWTIBIIYSA-N 0.000 description 1
Classifications
-
- 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
- H04L1/24—Testing correct operation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Dc Digital Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/695,522 US4022988A (en) | 1976-06-14 | 1976-06-14 | Fault locating apparatus for digital transmission system |
| US695,522 | 1976-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1108261A true CA1108261A (en) | 1981-09-01 |
Family
ID=24793348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA277,262A Expired CA1108261A (en) | 1976-06-14 | 1977-04-28 | Fault locating apparatus for digital transmission system |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4022988A (enExample) |
| JP (1) | JPS52153316A (enExample) |
| AU (1) | AU513720B2 (enExample) |
| BE (1) | BE855581A (enExample) |
| CA (1) | CA1108261A (enExample) |
| DE (1) | DE2726266A1 (enExample) |
| ES (1) | ES459759A1 (enExample) |
| FR (1) | FR2355415A1 (enExample) |
| GB (1) | GB1534466A (enExample) |
| IL (1) | IL52282A (enExample) |
| NL (1) | NL7706469A (enExample) |
| SE (1) | SE422515B (enExample) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2342599A1 (fr) * | 1976-02-27 | 1977-09-23 | Lignes Telegraph Telephon | Procede de controle de la qualite d'une liaison numerique et equipement de mise en oeuvre |
| US4270029A (en) * | 1978-03-23 | 1981-05-26 | Kokusai Denshin Denwa Kabushiki Kaisha | Selection system for digital signal repeaters |
| US4278850A (en) * | 1978-04-11 | 1981-07-14 | Kokusai Denshin Denwa Co., Ltd. | Monitoring system for optical transmission line repeaters |
| US4178582A (en) * | 1978-06-26 | 1979-12-11 | The Bendix Corporation | Digital signal transmitter/receiver system including programmable self-test capability |
| FR2440664A1 (fr) * | 1978-10-31 | 1980-05-30 | Thomson Csf | Dispositif de mesure de la qualite d'une liaison numerique et equipements de transmission comportant un tel dispositif |
| US4221939A (en) * | 1979-05-07 | 1980-09-09 | Bell Telephone Laboratories, Incorporated | Method and apparatus for determining the tuned frequency of a digital repeater |
| DE3133724A1 (de) * | 1981-08-26 | 1983-03-10 | Siemens AG, 1000 Berlin und 8000 München | Betriebsueberwachung von digitalen uebertragunssystemen |
| CA1205561A (en) * | 1983-03-11 | 1986-06-03 | Kiichi Yamashita | Method of searching fault locations in digital transmission line |
| US4575847A (en) * | 1983-09-26 | 1986-03-11 | International Business Machines Corp. | Hot carrier detection |
| NL8303944A (nl) * | 1983-11-17 | 1985-06-17 | Philips Nv | Werkwijze voor het besturen van een bewakingsinrichting in een digitaal transmissiesysteem. |
| GB2154104B (en) * | 1984-02-09 | 1987-09-23 | Marconi Instruments Ltd | Test apparatus |
| US4713810A (en) * | 1985-09-19 | 1987-12-15 | Gte Sprint Communications Corp. | Diagnostic technique for determining fault locations within a digital transmission system |
| US4710924A (en) * | 1985-09-19 | 1987-12-01 | Gte Sprint Communications Corp. | Local and remote bit error rate monitoring for early warning of fault location of digital transmission system |
| US4756005A (en) * | 1986-05-27 | 1988-07-05 | American Telephone And Telegraph Company At&T Bell Laboratories | Digital signal regenerator arranged for fault location |
| US4742518A (en) * | 1986-05-27 | 1988-05-03 | American Telephone And Telegraph Company, At&T Bell Laboratories | Fault location system for a digital transmission line |
| DE3733278A1 (de) * | 1987-09-29 | 1989-04-13 | Siemens Ag | Messverfahren zur stoerungsanalyse digitaler uebertragungswege und messeinrichtung zur durchfuehrung des messverfahrens |
| US5317278A (en) * | 1990-07-23 | 1994-05-31 | Rc Concepts, Inc. | Switched active fault locate filter |
| US5825515A (en) * | 1991-09-03 | 1998-10-20 | Lucent Technologies Inc. | Supervisory apparatus for optical transmission system |
| JPH0795166A (ja) * | 1993-09-20 | 1995-04-07 | Fujitsu Ltd | 伝送システムの試験装置 |
| JPH088983A (ja) * | 1994-06-15 | 1996-01-12 | Fujitsu Ltd | 装置間ディジタル信号伝送方法並びにディジタル信号送受信装置，ディジタル信号送信装置及びディジタル信号受信装置 |
| US6564349B1 (en) * | 2000-02-25 | 2003-05-13 | Ericsson Inc. | Built-in self-test systems and methods for integrated circuit baseband quadrature modulators |
| US7729477B2 (en) * | 2006-02-17 | 2010-06-01 | At&T Intellectual Property I, L.P. | System and method for detecting continuity of network lines |
| US7593833B2 (en) * | 2006-03-03 | 2009-09-22 | At&T Intellectual Property I, L.P. | System and method for determining performance of network lines |
| US8711711B2 (en) | 2008-10-31 | 2014-04-29 | Howard University | System and method of detecting and locating intermittent and other faults |
| US8102779B2 (en) | 2008-10-31 | 2012-01-24 | Howard University | System and method of detecting and locating intermittent electrical faults in electrical systems |
| US8897635B2 (en) * | 2008-10-31 | 2014-11-25 | Howard University | System and method of detecting and locating intermittent and other faults |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3678222A (en) * | 1970-11-25 | 1972-07-18 | Stromberg Carlson Corp | Test apparatus for digital repeaters |
| US3866217A (en) * | 1972-12-26 | 1975-02-11 | Currier Smith Corp | Monitoring transmission link by comparing pseudorandom signals |
| US3872257A (en) * | 1974-03-11 | 1975-03-18 | Bell Telephone Labor Inc | Multiplex and demultiplex apparatus for digital-type signals |
-
1976
- 1976-06-14 US US05/695,522 patent/US4022988A/en not_active Expired - Lifetime
-
1977
- 1977-04-28 CA CA277,262A patent/CA1108261A/en not_active Expired
- 1977-06-03 SE SE7706505A patent/SE422515B/xx unknown
- 1977-06-08 GB GB24047/77A patent/GB1534466A/en not_active Expired
- 1977-06-09 IL IL52282A patent/IL52282A/xx unknown
- 1977-06-09 AU AU25966/77A patent/AU513720B2/en not_active Expired
- 1977-06-10 BE BE178354A patent/BE855581A/xx not_active IP Right Cessation
- 1977-06-10 DE DE19772726266 patent/DE2726266A1/de not_active Withdrawn
- 1977-06-13 NL NL7706469A patent/NL7706469A/xx not_active Application Discontinuation
- 1977-06-13 FR FR7718077A patent/FR2355415A1/fr active Granted
- 1977-06-14 JP JP6951277A patent/JPS52153316A/ja active Pending
- 1977-06-14 ES ES459759A patent/ES459759A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IL52282A0 (en) | 1977-08-31 |
| AU513720B2 (en) | 1980-12-18 |
| SE422515B (sv) | 1982-03-08 |
| NL7706469A (nl) | 1977-12-16 |
| FR2355415A1 (fr) | 1978-01-13 |
| GB1534466A (en) | 1978-12-06 |
| US4022988A (en) | 1977-05-10 |
| BE855581A (fr) | 1977-10-03 |
| FR2355415B1 (enExample) | 1981-08-07 |
| JPS52153316A (en) | 1977-12-20 |
| DE2726266A1 (de) | 1977-12-22 |
| SE7706505L (sv) | 1977-12-15 |
| IL52282A (en) | 1979-09-30 |
| ES459759A1 (es) | 1978-04-16 |
| AU2596677A (en) | 1978-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |