5.4 Power Calibration
The Analyzer ensures steady power level at the test port inputs with the specified
accuracy. The power level is defined by the user from –60 dBm to +10 dBm.
A DUT is connected to the Analyzer by cables, which have some losses. The power
calibration allows the user to maintain a more accurate power level at a DUT input,
adjusted to the use of the cables.
The power calibration is performed by an external power meter connected to the cables’
ends, which will be later connected to the DUT.
After the power calibration is complete, power correction automatically turns on. Later
the user can disable or enable again the power correction function.
The power calibration is performed for each port and each channel individually.
Note The power correction status is indicated in the trace status
field (See section 4.2.2) and in the channel status bar (See
section 4.2.6).
5.4.1 Loss Compensation Table
The loss compensation function allows the user to apply compensation for unwanted
losses produced between the power meter and the calibrated port in the process of
power calibration. Define the losses, which you need to compensate in the table (See
figure 5.19) specifying frequency and losses.
Figure 5.19 Loss compensation table
Linear interpolation will be applied to the losses in the intermediary frequency points.
The loss compensation table is defined for each port individually.
Note To have the losses compensated for, you need to enable
this function and fill out the table before you start the
power calibration procedure.
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