Characterizing Spectrum Analyzer Response - National Instruments PXIe-5665 Calibration Manual

5. Set the RF source 2 frequency according to the first row in Table 9.
Start Frequency
10 MHz
200 MHz
612.5 MHz
700 MHz
3.8 GHz
Measure the Channel A Power and the Channel B Power using each sensor and the
6.
appropriate calibration factor for the RF source 2 frequency.
Calculate the DUT to Power Meter through Attenuator Path Loss and RF Source to
7.
DUT through Attenuator Path Loss for that frequency using the following formulas:
RF Source to DUT through Attenuator Path Loss = -Channel B Power
8. Repeat steps 5 to 7 for all remaining frequencies in Table 9.

Characterizing Spectrum Analyzer Response

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 power splitter reference output through the SMA (m)-to-
SMA (m) cable.
Table 9. RF Source 2 Frequencies
Stop Frequency
DUT to Power Meter through Attenuator Path Loss =
Channel A Power - Channel B Power
PXIe-5665 Calibration Procedure | © National Instruments | 25
100 MHz
600 MHz
—
3.6 GHz
14 GHz
Step Size
10 MHz
100 MHz
—
100 MHz
200 MHz