System and method for performing power spectral density and power level measurements
AssigneeTektronix, Inc.
InventorsP E Ramesh, John J. Pickerd
Life of this patent
Estimating the term…
Abstract
A system and method for performing power spectral density (PSD) and power level measurements for measuring PSD required by 10GBaseT applications, using a single test and measurement instrument, such as a real time oscilloscope is described. That is, an oscilloscope includes processing circuitry which receives an input signal and converts it to raw data, it then transforms the raw data into specific analyzed displayable data by algorithmically deriving PSD from spectral data and plotting the PSD data along with limit values on a display screen of the oscilloscope.
Claims9
A method for use in an oscilloscope for performing power spectral density (PSD) and power level measurements, the method comprising the steps of:
- algorithmically deriving PSD data from spectral data and plotting the PSD data on the oscilloscope along with limit values;
- calculating a power value of the signal from the PSD data for a user selectable frequency range;
- plotting a PSD curve on a reference channel of the oscilloscope with the limit values;
- and
- displaying on a display screen of the oscilloscope a pass result if the PSD curve is within the limit values and a fail result if the PSD curve is not within the limit values.
A system for use in an oscilloscope for making power spectral density (PSD) and power level measurements, the system comprising:
- an oscilloscope receiving an input signal and converting said input signal to raw data, and said oscilloscope having a display screen;
- said oscilloscope having processing circuitry, said processing circuitry transforming said raw data into specific analyzed displayable data by algorithmically deriving PSD data from spectral data and plotting the PSD data along with limit values on said display screen;
- said oscilloscope processing circuitry calculating a power value of the signal from the PSD data for a user selectable frequency range;
- said oscilloscope processing circuitry plotting a PSD curve on a reference channel of said oscilloscope with limit values;
- and
- providing a pass result if the PSD curve is within the limit values and a fail result if the PSD curve is outside the limit values;
- and
- displaying the pass result or fail result on said display screen of said oscilloscope.
Dependencies are inferred from the claim text.