NI PXIe-5694 Calibration Procedure
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© National Instruments
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11
Characterizing the Source Signal Power Levels
Complete this process to characterize the power level of the RF source generators. This
information is required in the verification procedures.
1.
Ensure that the RF source 1 generator output is ON and the RF source 2 generator output
is OFF.
2.
Set the RF source 1 generator to the first frequency listed in Table 2.
3.
Adjust the RF source 1 output power until the power level at the low-frequency combiner
common connector, measured by the power meter, is within 0.1 dB of 0 dBm.
4.
Record the RF source 1 power level in the empty cell corresponding to the appropriate
frequency and power level.
5.
Repeat steps 2 through 4 for each of the remaining frequency and power level combinations
in Table 2. Retain this information for use during the verification procedures.
6.
Ensure that the RF source 1 generator output is OFF and the RF source 2 generator output
is ON.
Table 2.
Source 1 Signal Characterization
Source 1
Frequency (MHz)
Power Level at
0 dBm
Power Level at
-5 dBm
Power Level at
-12 dBm
21.4
163.6
186.1
191.5
193
193.51
193.6
193.765
194.2
195.7
201.1
223.6
