Connecting Signals
Use appropriate shielded cables to connect signals to the NI vector network analyzer to ensure
you achieve the best measurement accuracy possible.
Unsuitable cabling can adversely affect the vector error correction, producing unreliable and
misleading results. Precision coaxial cables are available for purchase from
. Ensure
you take the following precautions when connecting signals to the NI 5630.
•
Use phase-stable cables to make connections with the NI 5630. Phase-stable cables help
ensure that the reference plane remains stable across shifts in cable position after
calibration.
•
Maintain placement of any accessories or cables that you attach to the NI 5630 to ensure
that the reference plane remains constant between calibration and measurement.
Tip
You can also use phase-equal adapters after calibration to preserve the
reference plane.
The following figure shows an example of the reference plane for a male and female
connector.
Figure 4.
Connector Reference Plane and Pin Depth
1
2
3
4
4
1. Reference Plane
2. Female Connector
3. Male Connector
4. Pin Depth
Related Information
Direct Connections to the NI 5630
The NI 5630 is a precision RF instrument that is sensitive to ESD and transients. Ensure you
take the following precautions when making direct connections to the NI 5630 to avoid
damaging the device.
NI PXIe-5630 Getting Started Guide
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© National Instruments
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