gain error
A measure of the deviation of the gain of an amplifier from the ideal gain. It can be viewed as the deviation m from the voltage transfer function of mx+b.
The after-calibration specification shows the maximum gain error that occurs when the board is calibrated properly. A before-calibration specification is also given so that you know the worst-case error that can occur, even if the board is not calibrated. The before-calibration specification also includes the range of calibration of which the onboard circuitry is capable. The specification also shows the error that will occur when the board is calibrated at a gain of 1 and used at a different gain. When gain is measured as a function of frequency, it is called the frequency response.
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