Invention Grant
- Patent Title: Calibration for test and measurement instrument including asynchronous time-interleaved digitizer using harmonic mixing
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Application No.: US16450921Application Date: 2019-06-24
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Publication No.: US11041884B2Publication Date: 2021-06-22
- Inventor: Daniel G. Knierim , Barton T. Hickman
- Applicant: Tektronix, Inc.
- Applicant Address: US OR Beaverton
- Assignee: Tektronix, Inc.
- Current Assignee: Tektronix, Inc.
- Current Assignee Address: US OR Beaverton
- Agency: Miller Nash Graham & Dunn
- Agent Andrew J. Harrington
- Main IPC: G01R13/02
- IPC: G01R13/02 ; H03M1/12 ; G01R35/00 ; H03M1/06 ; H03M1/10

Abstract:
A test and measurement instrument includes a coefficient storage facility coupled to a programmable filter. The coefficient storage facility is configured to store at least two pre-determined filter coefficient sets, and configured to pass a selected one of the at least two pre-determined filter coefficient sets to the filter based on a measurement derived using a compensation oscillator. The measurement may include clock delay and clock skew. In some examples the test and measurement instrument may additionally adjust clock delay and/or clock skew in addition to selecting appropriate filter coefficients.
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