Agilent Technologies U2000 Series Guide d'installation télécharger pdf (Page 5)

How Does It Work? (continued)

Figure 6 and Figure 7 show the results

of source power calibration for EPM and

USB power sensors respectively. The PNA

source is stepped through the speciﬁ ed

range (in this example, stepped from 1

GHz to 6 GHz), and power (at 0 dBm)

is measured with the power meter and

USB power sensor. At each data point,

the source power is adjusted until the

measured power is within the speciﬁ ed

accuracy level.

The source power calibration results

can be saved in a Microsoft® Excel ﬁ le

and the two results combined in a single

graph for comparison (see Figure 8). The

results appear to be comparable and

within the ±0.05 db limit line.

Figure 6 Source power calibration result with EPM and E9301A

power meter and sensor

Figure 7 Source power calibration result with U2000 Series USB

power sensor

Figure 8 EPM power meter and USB power sensor source power calibration data

comparison

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Agilent Technologies U2000 Series Guide d'installation Page 5