Agilent Technologies U2000 Series Guia de Instalação descarregar pdf (Página 7)

How Does It Work? (continued)

Figure 11 and Figure 12 show the

measurement result of “locked” and

“drifted” LO signal by FOM mode (see

the blue trace) and USB power sensor

(see the red trace) respectively. The

measurement result of the USB power

sensor shows that it has good correlation

with the FOM result at locked signal, and

is stable with drifted LO signal.

For details of the frequency offset

procedure and operation of VBA with

the USB power sensor, please refer to

the “Agilent Simple Scalar Network

Analysis of Frequency Converter Devices

using U2000 USB Power Sensor Series

with ENA Series Network Analyzers,

Application Note”

Figure 12 Measurement results with “Drifted” LO (RF Power versus IF Power)

Figure 11 Measurement results with “Locked” LO (RF Power versus IF Power)

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Agilent Technologies U2000 Series Guia de Instalação Página 7