Device for modular input high-speed multi-channel digitizing of electrical data
US5453744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | Nov 23, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/123
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multi-channel high-speed digitizer module converts a plurality of analog signals to digital signals (digitizing) and stores the signals in a memory device. The analog input channels are digitized simultaneously at high speed with a relatively large number of on-board memory data points per channel. The module provides an automated calibration based upon a single voltage reference source. Low signal noise at such a high density and sample rate is accomplished by ensuring the A/D converters are clocked at the same point in the noise cycle each time so that synchronous noise sampling occurs. This sampling process, in conjunction with an automated calibration, yields signal noise levels well below the noise level present on the analog reference voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.