Methods and apparatus for acquiring measurements and performing an auto-zero process using a multi-range measurement apparatus
US8354834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2009 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Apr 23, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one embodiment, a measurement apparatus has an input stage, an output stage and a multiplexer. The input stage has a signal input, a plurality of measurement range outputs, and a plurality of selectable gain stages, with each of the selectable gain stages being coupled between the signal input and a respective one of the measurement range outputs. The output stage has a measurement acquisition path between an analog measurement input and a digital measurement output. The measurement acquisition path includes an analog-to-digital converter. The multiplexer has i) a plurality of data inputs, at least two of which are coupled to respective ones of the plurality of measurement range outputs, and at least one of which is a reference input configured to receive a signal to which signals appearing at the measurement range outputs are commonly referenced, ii) a data output coupled to the analog measurement input of the output stage, and iii) a control input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.