Measurement Traceability - Keysight N5221A Service Manual

Tests and Adjustments PNA Series Microwave Network Analyzers
System Verification N5221A/22A

Measurement Traceability

To establish a measurement traceability path to a national standard for a network analyzer system, the
overall system performance is verified through the measurement of devices that have a traceable path. This
is accomplished by measuring the devices in a Keysight verification kit.
The measurement of the devices in the verification kit has a traceable path because the factory system that
measured the devices is calibrated and verified by measuring standards that have a traceable path to the
National Institute of Standards and Technology (NIST) (see Figure 3-8). This chain of measurements defines
how the verification process brings traceability to the network analyzer system.
Figure 3-8 NIST Traceability Path for Calibration and Verification Standard
3-22 Service Guide N5222-90001