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PXIe-5665 Calibration Procedure
Characterizing Power Splitter Difference
1.
Connect the RF source 2 output to the power splitter input through the SMA (m)-to-
SMA (m) cable.
2.
Connect power sensor A to the reference output of the power splitter through the
SMA (m)-to-SMA (m) cable.
3.
Connect power sensor B to the other output of the power splitter through the
SMA (m)-to-SMA (m) cable. The completed setup is shown in Figure 1.
Figure 1.
Power Splitter Difference Characterization Equipment Setup
4.
Set the RF source 2 frequency to 4 GHz.
5.
Set the RF source 2 power to 0 dBm.
6.
Measure the signal at 4 GHz with both power sensors.
7.
Set the power sensors calibration factor for the measurement frequency at 4 GHz.
8.
Calculate the
Power Splitter at 4 GHz Correction Factor
using the following formula:
Power Splitter at 4 GHz Correction Factor = Corrected Power Sensor B Power - Corrected
Power Sensor A Power
1
RF Source 2
2
SMA (m)-to-SMA (m) cable
3
Power Splitter
4
Power Sensor A
5
Power Sensor B
6
Power Meter
4
6
1
5
3
2