28 Keysight P937xA PXIe Service Guide
Tests, Adjustments, and Troubleshooting
About System Verification and Performance Tests
3-
About System Verification and Performance Tests
The performance of the network analyzer is specified in two ways: system
specifications and instrument specifications. It is the end user’s responsibility
to determine which set of specifications is applicable to their use of the
network analyzer.
A network analyzer measurement “system” includes the network analyzer,
calibration kit, test cables, and any necessary adapters. The system verification
software is used to verify the system’s conformance to the “system”
specifications. A “pass” result demonstrates that the network analyzer test
cables and adapters perform correctly as a system. It DOES NOT demonstrate
that any one component performs according to its individual specifications. A
change to any part of this measurement system requires a re-verification of the
system.
Instrument specifications specify the network analyzer’s uncorrected
measurement port characteristics and its output and input behavior. The
performance tests are used to verify the module’s conformance to “instrument”
specifications. Refer to “Test Management Environment (TME) Performance
Tests” on page 45.
System Specifications
System specifications specify warranted performance of the measurement
system when making error-corrected measurements using the same
calibration kit and test cables used during the system verifications routine.
System specifications are applicable only when the measurement system is
used to make error-corrected measurements.
The network analyzer’s system specifications are described in the Data Sheet,
available online at
http://literature.cdn.keysight.com/litweb/5992-2765EN.pdf.
System specifications are expressed in two ways:
— residual errors of the measurement system shown as tabular specification
values
— graphs of measurement uncertainty versus reflection and transmission
coefficients
System specifications are verified in one of the following ways:
— Complete the system verification procedure using a certified verification kit
and certified calibration kit that will be used for future measurements.
— Complete all of the performance tests using a certified calibration kit that
will be used for future measurements. This alternative verifies both the
system specifications and the instrument specifications for the network
analyzer.
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