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Preço para o: Brasil

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Descrição

Option 208 enables a power measurement versus frequency. The power is measured using a USB power sensor. FieldFox’s source frequency can be set independently from the power sensor (receiver) frequency. The frequency of both the source and receiver are swept, and the two track each other. The offset frequency can be negative, zero, or positive.

Option 208 can be used to characterize the scalar transmission response of devices such as mixers and converters. This frequency-offset capability is necessary for conversion loss/gain measurements on frequency-translating devices, since by definition, the input and output frequencies of the DUT are different. The FieldFox source stimulates the DUT and the power sensor is used as the measurement receiver.

Source power, gain/loss, and receiver or output power can be displayed on the FieldFox display.

For some devices, the output frequency may sweep in a reverse direction, as compared to the source frequency. The basic relationships between the source, receiver and offset frequencies are shown in the table below. The FieldFox analyzer includes an offset calculator that ensures a fast measurement setup.

Src sweep direction Rx sweep direction Frequency calculations
Forward f2src > f1src Forward f2rx > f1rx Receiver frequency = Source frequency ± Offset
Forward f2src > f1src Reverse f2rx < f1rx Receiver frequency = Offset – Source frequency
Offset > Source frequency

Configuration information:

Option 302, USB power sensor support, is a pre-requisite. You must order Option 302 if you want Option 208.
Supported USB power sensors

Option 208 can be added as a product upgrade.