PXIe-5665 Calibration Procedure
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© National Instruments
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5.
Set the RF source 2 frequency according to the first row in Table 9.
6.
Measure the
Channel A Power
and the
Channel B Power
using each sensor and the
appropriate calibration factor for the RF source 2 frequency.
7.
Calculate the
DUT to Power Meter through Attenuator Path Loss
and
RF Source to
DUT through Attenuator Path Loss
for that frequency using the following formulas:
DUT to Power Meter through Attenuator Path Loss
=
Channel A Power - Channel B Power
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
Start Frequency
Stop Frequency
Step Size
10 MHz
100 MHz
10 MHz
200 MHz
600 MHz
100 MHz
612.5 MHz
—
—
700 MHz
3.6 GHz
100 MHz
3.8 GHz
14 GHz
200 MHz