Agilent Technologies E8285A manual No Pk/Avg

Chapter 4, Description of Fields

Fields

No Pk/Avg

This field is displayed when the Controls field is set to Auxiliary. This field performs two functions: peak hold, and video averaging.

Pk Hold (peak hold) prevents the Spectrum Analyzer from erasing the previous trace each time it sweeps. This causes the traces to ‘build-up’ on the screen until Off, No Pk/Avg or the Meas reset key is selected. This allows the capture of transient signals that are not displayed long enough to view during normal operation.

Avg 1 through Avg 100 (video averaging) enables the Spectrum Analyzer to display a trace representing the average of several measurements. The number of samples used for measurement averaging range from 1 to 100 (see below). No Pk/Avg and Off function identically. Off is provided to maintain backwards compatibility with earlier firmware and software.

•No Pk/Avg means that peak hold and video averaging are off.

GPIB Example

“DISP CSP;CSP:TRACE:MHOLD ‘No Pk/Avg’”

•Pk Hold means that peak hold is on.

GPIB Example

“DISP CSP;CSP:TRACE:MHOLD ‘Pk Hold’”

•Avg [n] enables video averaging over [n] measurements, where n = 1, 2, 3, 4, 5, 10, 20, 50, or 100

GPIB Example

“DISP CSP;CSP:TRACE:MHOLD ‘Avg 1’”

•Off means that peak hold and video averaging are off.

GPIB Example

“DISP CSP;CSP:TRACE:MHOLD ‘Off’”

Operating Considerations

After capturing the desired signal, you can use the HOLD function (press and release the SHIFT key, then the Meas reset key) to prevent additional signals from building-up on the display.

Screens Where Field is Present

CDMA REVERSE CHANNEL SPECTRUM

SPECTRUM ANALYZER

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