ES463651A1 - Checking signal generators for digital transmission systems - Google Patents
Checking signal generators for digital transmission systemsInfo
- Publication number
- ES463651A1 ES463651A1 ES463651A ES463651A ES463651A1 ES 463651 A1 ES463651 A1 ES 463651A1 ES 463651 A ES463651 A ES 463651A ES 463651 A ES463651 A ES 463651A ES 463651 A1 ES463651 A1 ES 463651A1
- Authority
- ES
- Spain
- Prior art keywords
- stages
- bit
- pseudo
- produced
- length
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/407—Monitoring; Testing of relay systems without selective localization
- H04B17/408—Monitoring; Testing of relay systems without selective localization using successive loop-backs
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Dc Digital Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
Improvements in test signal generators for the location of errors by looping in the intermediate regenerators of a system for the transmission of digital signals, especially pcm (pulse code modulation) signals, which contain devices in their emission devices per line multistage grid with a length of periods of (2a - j) represented, the number of stages and j a possible variation of the length of the periods of the pseudo-random sequence produced in the gridding device, with respect to the corresponding pseudo-random sequence to the number of stages, characterized in that a pseudo-random generator with p stages and a bit period of a length of (2p-k) bit, produced by stippling of different stages, is provided, because the number p of stages has been chosen in such a way that pa - 1 is equal to the number g. M of successive zero bits, necessary in the test signal, because k indicates the shortening of the maximum length of the pseudo-random sequence p produced and it is to be chosen so that the bit number of the succession of test signals squared, by period, is divisible into n bit integer blocks, because g is the previously set number of zero bit groups and because m is the previously set number of zero bits per group of quadratic test signals produced. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2649145A DE2649145C3 (en) | 1976-10-28 | 1976-10-28 | Test signal generator for fault location |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES463651A1 true ES463651A1 (en) | 1979-01-01 |
Family
ID=5991778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES463651A Expired ES463651A1 (en) | 1976-10-28 | 1977-10-28 | Checking signal generators for digital transmission systems |
Country Status (13)
| Country | Link |
|---|---|
| AT (1) | AT355630B (en) |
| AU (1) | AU511079B2 (en) |
| BE (1) | BE860286A (en) |
| BR (1) | BR7707206A (en) |
| DE (1) | DE2649145C3 (en) |
| DK (1) | DK477777A (en) |
| ES (1) | ES463651A1 (en) |
| FR (1) | FR2369745A1 (en) |
| GB (1) | GB1543846A (en) |
| IT (1) | IT1086983B (en) |
| NL (1) | NL7711913A (en) |
| NO (1) | NO773618L (en) |
| SE (1) | SE7711942L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2752541C2 (en) * | 1977-11-24 | 1979-12-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Test signal generation for fault location |
-
1976
- 1976-10-28 DE DE2649145A patent/DE2649145C3/en not_active Expired
-
1977
- 1977-09-29 AT AT694377A patent/AT355630B/en not_active IP Right Cessation
- 1977-10-11 GB GB42188/77A patent/GB1543846A/en not_active Expired
- 1977-10-19 FR FR7731505A patent/FR2369745A1/en not_active Withdrawn
- 1977-10-21 NO NO773618A patent/NO773618L/en unknown
- 1977-10-24 SE SE7711942A patent/SE7711942L/en unknown
- 1977-10-25 IT IT28947/77A patent/IT1086983B/en active
- 1977-10-27 BR BR7707206A patent/BR7707206A/en unknown
- 1977-10-27 DK DK477777A patent/DK477777A/en unknown
- 1977-10-27 AU AU30107/77A patent/AU511079B2/en not_active Expired
- 1977-10-28 BE BE182197A patent/BE860286A/en unknown
- 1977-10-28 ES ES463651A patent/ES463651A1/en not_active Expired
- 1977-10-28 NL NL7711913A patent/NL7711913A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE2649145A1 (en) | 1978-05-03 |
| AU3010777A (en) | 1979-05-03 |
| DK477777A (en) | 1977-04-29 |
| BR7707206A (en) | 1978-07-18 |
| ATA694377A (en) | 1979-08-15 |
| BE860286A (en) | 1978-02-15 |
| DE2649145B2 (en) | 1979-10-31 |
| AT355630B (en) | 1980-03-10 |
| FR2369745A1 (en) | 1978-05-26 |
| IT1086983B (en) | 1985-05-31 |
| AU511079B2 (en) | 1980-07-24 |
| SE7711942L (en) | 1978-04-29 |
| GB1543846A (en) | 1979-04-11 |
| NL7711913A (en) | 1978-05-03 |
| NO773618L (en) | 1978-05-02 |
| DE2649145C3 (en) | 1980-07-10 |
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