Apparatus and method for a wide band spectral balance measurement
US6574310B1 · kind B1 · utility
7Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2000 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Apr 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/305
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for testing telephone equipment for longitudinal balance. A signal generating circuit places a test signal at a certain frequency on the tip and ring wires of a telephone line. The telephone line is monitored and the signals on the tip and ring wires are measured and compared against each other. The frequency is gradually increased in set increments until the test frequency is in the megahertz range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.