Method for determining time differences between signals measured by at least two coupled measuring devices and measurement system and corresponding switching device

US9678153B2 · kind B2 · utility

Assignee

• Rohde & Schwarz GmbH & Co. KG · DE

Inventors

• Johannes Steffens · Rosenheim, DE
• Markus Freidhof · Kirchseeon, DE
• Kurt Schmidt · Grafing, DE
• Manfred Mueller · Eindhoven, NL

Key dates

• Filing date: Mar 25, 2008
• Grant date: Jun 13, 2017
• Expiry date: May 7, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/31726
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method and to a switching device (4) and a measurement system (1). In the method according to the invention for determining time differences between measurement signals measured by at least two couple measurement devices (2, 3), a time basis signal is first generated for the measurement devices (2, 3). A common reference signal is further generated by a signal generator (5). The common reference signal is fed to measurement signal inputs (8, 9) of the coupled measuring devices (2, 3) via the switching device (4). A measurement signal is then fed to said measurement signal inputs (8, 9) of the coupled measuring devices (2, 3) and the time position of the measurement signals relative to the reference signal is determined in each of the coupled measuring devices (2, 3). The switching device (4), to this end, has a first measuring device connection (12) and a second measuring device connection (13) connected to the measurement signal inputs (8, 9) of the first measuring device (2) and the second measuring device (3). A reference signal is alternately fed via the measuring device connections (12, 13) of the switching device (4) to the first or the second measu…