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NI PXIe-5694 Calibration Procedure
Configuring the Hardware
Complete this process to connect the two sources to a power sensor and power meter, preparing
the configuration for verification and characterization. This assembly is used in
Third-Order Intercept Point Out-of-Band
1.
Connect the spectrum analyzer REF OUT connector to the REF IN connector on the back
of the PXI Express chassis. Use a standard BNC (m)-to-BNC (m) cable.
2.
Connect one 10 dB attenuator to a non-common low-frequency combiner connector. Label
both the low-frequency combiner connector and
the attenuator
P1
.
3.
Connect the remaining 10 dB attenuator to the remaining non-common low-frequency
combiner connector. Label both the low-frequency combiner connector and the attenuator
P2
.
4.
Use an SMA (m)-to-SMA (m) cable to connect RF source 1 to the 10 dB attenuator labeled
P1
. Label the signal generator
Source 1
. Label the cable
S1P
.
5.
Use an SMA (m)-to-SMA (m) cable to connect RF source 2 to the 10 dB attenuator labeled
P2
. Label the signal generator
Source 2
. Label the cable
S2P
.
6.
Connect the combiner common connector to power sensor A.
7.
Connect channel A of the power meter to power sensor A.
Figure 1.
Configuration for Power Level Characterization
1
RF Source 1
2
SMA (m)-to-SMA (m) Cable
3
10 dB Attenuator
4
Low-Frequency Combiner
5
Power Sensor A
6
RF Source 2
7
Power Meter
1
2
5
4
6
7
3
