Agilent Technologies E4406A manual Voltage Avg - The voltage is averaged

Making Measurements

Preparing for Measurements

•Avg Number - Modifies the number of times the current measurement will be repeated with the results from the repeated measurements averaged. Increased averages usually give more accurate results. There will be an increase in the time taken to make a measurement if the number of averages is increased.

•Avg Mode - Selects between an Exp (exponential) or a Repeat mode of averaging. This selection only affects the averaging after the number of N averages is reached (set using Avg Number). Normal (linear) averaging is always used until the specified number of N averages is reached. When Measure is set to Single, data acquisitions are stopped when the number of averages is reached. Therefore Avg Mode has no effect on single measurements.

Exponential averaging: When Measure is set at Cont (continuous) data acquisitions will continue indefinitely. After N averages, exponential averaging is used with a weighting factor of N (the displayed average count stops at N). Exponential averaging weights new data more than old data, which facilitates tracking of slow-changing signals. The value of N is set through use of the Average key or the Avg Bursts key.

Repeat averaging: When Measure is set at Cont, data acquisitions will continue indefinitely. After N averages is reached, all previous result data is cleared and the average count is set back to 1. This is equivalent to pressing Measure, Single and then pressing the Restart key each time the single measurement finishes.

•Avg Type - Allows you to select type of averaging. Only the types of averaging that are appropriate for the current measurement are available in that measurement. The following average types are available:

Pwr Avg - Averages the power, which is equivalent to the rms of the voltage. This is the default type of averaging.

Log-Pwr Avg - The log of the power is averaged. This is also known as video averaging.

Voltage Avg - The voltage is averaged.

Maximum - The maximum values are retained.

Minimum - The minimum values are retained.

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