Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves
Reexamination Certificate
2006-01-24
2006-01-24
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Analysis of complex waves
C324S115000
Reexamination Certificate
active
06989663
ABSTRACT:
A calibration system for measurement device is operable to calibrate each channel response to compensate its own gain error for a desired frequency range. The channel modes may include voltage range and a coupling mode. Each channel of the plurality of channels may have a certain number of channel mode combinations, including different voltage ranges and coupling modes. Each channel also may have a different frequency response, and as a result each channel mode combination may require an individual digital filter. As a result, the frequency response of each channel may be characterized and the digital filter may be designed to flatten each channel mode combination. The designed filter coefficients for each of the one or more channels of the plurality of channels may be stored in the measurement device. The filter coefficients may be used by a digital filter in order to compensate each one of the one or more channels on the measurement device. The calibration process may be implemented during manufacturing of the measurement device.
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Hood Jeffrey C.
Meyertons Hood Kivlin Kowert & Goetzel P.C.
National Instruments Corporation
Teresinski John
Wojcik Martin R.
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