Measurement apparatus and measurement method
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsGerd Bresser, Friedrich Reich
Life of this patent
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Abstract
Measurement apparatus and method for digital data acquisition. A first operation mode is provided for real-time processing of digital data having a reduced sample rate or resolution. Furthermore, a second operation mode is provided for processing the measurement signal off-line with a higher accuracy. In particular, the high accuracy data may be temporarily stored and analyzed upon the operation mode is changed from the real-time mode to the off-line mode.
Claims18
A measurement apparatus for digital data acquisition, the apparatus comprising an oscilloscope,
- wherein the oscilloscope comprises:
- a data acquisition device adapted to receive a measurement signal and to provide a first digital data stream, wherein the first digital data stream is generated based on the received measurement signal sampled at a first sample rate;
- a first memory adapted to store data of the first digital data stream;
- a decimator adapted to receive the first digital data stream and to generate a second digital data stream sampled at a second sample rate based on the received first digital data stream;
- and
- a signal processor adapted to perform a real-time processing of the second digital data stream in a first operation mode of the oscilloscope, and to perform an off-line processing of the data of the first digital data stream stored in the first memory in a second operation mode of the oscilloscope,
- a display adapted to continuously display the processed second digital data stream in the first operation mode, and to display a result of the processed first digital data stream in the second operation mode;
- wherein the real-time processing of the second digital data stream comprises at least one of processing the second digital data stream for displaying a signal curve in real-time or scanning the second digital data stream for identifying a pre-determined event.
A measurement method for digital data acquisition by an oscilloscope, the method comprising:
- providing, by a data acquisition device of the oscilloscope, a first digital data stream based on a received measurement signal, wherein the first digital data stream is sampled at a first sample rate;
- storing data of the first digital data stream in a first memory of the oscilloscope;
- generating, by a decimator of the oscilloscope, a second digital data stream based on the first digital data stream, wherein the second digital data stream is sampled at a second sample, the second sample rate being less than the first sample rate;
- performing a real-time processing of the second digital data stream by a signal processor in a first operation mode of the oscilloscope;
- performing an off-line processing of the data of the first digital data stream stored in the first memory by the signal processor in a second operation mode of the oscilloscope, and
- continuously displaying the processed second digital data stream on a display in the first operation mode, and displaying a result of the processed first digital data stream on the display in the second operation mode,
- wherein the real-time processing of the second digital data stream comprises at least one of processing the second digital data stream for displaying a signal curve in real-time or scanning the second digital data stream for identifying a pre-determined event.
Dependencies are inferred from the claim text.