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NI PXIe-5694 Calibration Procedure
7.
Repeat steps 2 through 4 for each of the frequency and power level combinations in Table 3,
recording the RF source 2 power level in place of RF source 1.
Characterizing the Source 2 Signal Correction Level
Complete this process to characterize the power level of the RF source 2 generator. This
information is required in the verification procedures.
1.
Ensure that the RF source 1 output is OFF and the RF source 2 output is ON.
2.
Set the output power level of RF source 2 to -20 dBm.
3.
Set RF source 2 to the first frequency listed in Table 4.
4.
Record the power level reading on the power meter in the
Power Meter Reference
cell
corresponding to the appropriate frequency.
5.
Repeat steps 3 and 4 for the remaining frequency listed in Table 4.
6.
Remove the power sensor from the combiner.
Table 3.
Source 2 Signal Characterization
Source 2
Frequency (MHz)
Power Level at
0 dBm
Power Level at
-5 dBm
Power Level at
-12 dBm
21.4
133.6
178.6
189.4
192.4
193.27
193.6
193.93
194.8
197.8
208.6
253.6
Table 4.
Signal Correction
Source 2
Frequency (MHz)
Power Meter
Reference (dBm)
Spectrum
Analyzer (dBm)
Correction (dB)
193.6
21.4
