E5071C
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(You don't need to worry about these errors since the E5071C does not
have mechanical RF switches).
Connector repeatability errors
Connector repeatability errors are caused by fluctuations in the electrical
characteristics of connectors due to wear. These errors may be reduced by
handling connectors with care.
Systematic Errors
Systematic errors are caused by imperfections in the measuring instrument
and the test setup (cables, connectors, fixtures, etc.). Assuming that these
errors are repeatable (i.e., predictable) and their characteristics do not
change over time, it is possible to eliminate them mathematically at the
time of measurement by determining the characteristics of these errors
through calibration. There are six types of systematic errors, as follows.
Errors caused by signal leaks in the measuring system:
• Directivity
• Isolation (cross-talk)
Errors caused by reflections in the measuring system:
• Source match
• Load match
Errors caused by the frequency response of the receiver within the
measuring instrument:
• Reflection tracking
• Transmission tracking
The E5071C has two receivers for each test port: the reference receiver
and the test receiver (transmission measurement or reflection
measurement). You can perform measurements with both of these
receivers at the same time.
E5071C port architecture and systematic errors
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