Network analyzer performance verification
US5332974A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1990 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | May 1, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method to verify that a test and measurement system continues to operate within a predetermined acceptable range with respect to a given calibrated state previously defined for that system without the need for conventional external reference components. In accordance with one embodiment, performance verification of a network analyzer used to perform electrical measurements is achieved by storing RF "thru" measurement data (an RF thru measurement trace of the system) at the time of calibration at the factory or later repair and/or recalibration at a field service site. In accordance with another embodiment, performance verification of a lightwave component analyzer, used to perform electrical, electro-optical, opto-electrical, and optical measurements, is achieved by storing RF and optical thru measurement data (both an RF thru measurement trace of the system and an optical thru measurement trace of the system) at the time of calibration at the factory or later repair and/or recalibration. In both cases, at the time of manufacture, the key measurement paths (with calibrated reference components in the loop) of the test and measurement system are measured and stored in system memor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.