Special Feature Mean LO Phase Offset at 2.4 GHz (4 PXIe-5663 Channels) over 3 Hours
0.20 0.15 Mean Phase Offset (deg)
lyzer, the RF analyzer system is capable of acquiring phase coherent RF signals for extended periods of time. While emerging technologies such as MIMO and beamforming produce new challenges for test engineers, modular RF instrumentation provides a cost-effective and accurate measurement solution to this challenge. In fact, PXI instruments such as the NI PXIe-5663 VSA and NI PXIe-5673 can be configured for up to 4x4 MIMO and phase-coherent RF measurement applications.
Channel 0 Channel 1 Channel 2 Channel 3
0.10 0.05 0.00 -0.05 -0.10 -0.15 -0.20
0
1000
2000
3000
Figure 5
4000
5000 6000 Time (sec)
7000
8000
9000
10000
10799
This graph illustrates phase versus time for a calibrated four-channel RF acquisition system over 3 hours.
National Instruments Austin, TX. (888) 280-7645. [www.ni.com].
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