About System Verification And Performance Tests; System Specifications; Instrument Specifications; System Verification Procedure - Keysight N5227A Service Manual

Tests and Adjustments

About System Verification and Performance Tests

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 PNA.
A network analyzer measurement "system" includes the analyzer, calibration kit, test cables, and any
necessary adapters. The system verification software in the PNA is used to verify the system's
conformance to the "system" specifications. A "pass" result demonstrates that the 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 PNA performance tests are used to verify the analyzer's conformance to
"instrument" specifications.

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
verification routine. System specifications are applicable only when the measurement system is used to
make error-corrected measurements.
The analyzer's system specifications are described in the Data Sheet and Technical Specifications
documents, available online at:
http://literature.cdn.keysight.com/litweb/pdf/N5227-90003.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, or
• 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 analyzer.

Instrument Specifications

The analyzer's instrument specifications are described in the Data Sheet and Technical Specifications
documents, available online at:
http://literature.cdn.keysight.com/litweb/pdf/N5227-90003.pdf.
These specifications apply when the analyzer is used to make either raw or error-corrected measurements.

System Verification Procedure

The system verification procedure tests the network analyzer measurement "system", as defined previously,
3-6
http://literature.cdn.keysight.com/litweb/pdf/N5227-90002.pdf
http://literature.cdn.keysight.com/litweb/pdf/N5227-90002.pdf
PNA Series Microwave Network Analyzers
Service Guide N5227-90001
N5227A
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