Instrument interfacing method and device thereof
US11714115B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 11, 2021 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Mar 11, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument interface method and device. Two capacitors, one capacitor has one end as input of the device, connected to live line of power output of a LISN, and has other end as output of the device, connected to one test port of an oscilloscope; the other capacitor has one end as input of the device, connected to neutral line of the power output of the LISN, and has other end as output of the device, connected to another test port of the oscilloscope; without changing the LISN design, existing LISN products can be used for conducted emission test with oscilloscope-based time-domain EMI measurement instruments by means of the method and device. Said two capacitors have a capacity of <0.09 μF, which reduced the requirements of oscilloscope's A/D conversion, making low-cost oscilloscope can also be used for EMI testing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.