Analog Measurements - Screens and Control Fields

Control Fields for Analog Measurements

Mod In To

This modulation input field defines how an external modulation source is used with the RF generator. Two fields are used:

The upper field determines whether the ANALOG MODULATION IN signal is set for AM or FM modulation of the RF GENERATOR.

The lower field sets the modulation sensitivity. For instance, if FM (/Vpk) is selected for the upper field, and you set the lower field to 1.0000 kHz, the RF generator will deviate 1 kHz for every 1 Volt peak at the ANALOG MODULATION IN connector.

Screens on which this field is displayed

RF GENERATOR

No Pk/Avg

This field performs two functions:

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 measurement reset (using Meas Reset (press and release the Shift key, then the Hold key) is performed. This allows the capture of transient signals that are not displayed long enough to view during normal operation.

Avg 1 through 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.

Pk Hold means that peak hold is on.

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

Off means that peak hold and video averaging are off.

Operating Considerations

After capturing the desired signal, you can use the hold function (press Hold key) to prevent additional signals from building-up on the display.

Screens on which this field is displayed

SPEC ANL: auxiliary controls menu

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Chapter 6

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Agilent Technologies 8935 series e6380a manual Mod In To, No Pk/Avg