Measuring device for the interface of a transmission path with full-duplex transmission in the common carrier duplex process
US5936946A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Aug 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13322
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A measuring device for the interface of a transmission path with full-duplex transmission in the common carrier duplex process. A highly integrated interface unit is connected to the interface via a hybrid set and a transmitter on one side. A line termination or a network termination is connected as the test object on the other side. In order to perform measurements on the test object with such a measuring device relatively easily and accurately, a device simulating the arrangement of a hybrid set, a transmitter and a line or network termination is provided and with its connected to the highly integrated interface unit via a high-resistance differential amplifier, and its output connected to an input of a subtractor. Another input of the subtractor is connected to the interface via an additional differential amplifier. The output of the subtractor is connected to a measurement system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.