Keysight P937xA PXIe Service Guide 33
Tests, Adjustments, and Troubleshooting
Preliminary Checks
Preliminary Checks
Preliminary checks include the following:
— The Operator’s Check
The Operator’s Check tests the basic functionality of the source, switches,
and receivers in the network analyzer.
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. This section includes system verification. If
instrument specifications verification is required, contact Keysight. Refer to
https://www.keysight.com/find/usb-vna.
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.
The Operator’s Check
The Operator’s Check is a software driven test that checks the basic operation
of the assemblies in all of the measurement port signal paths. By performing
the Operator’s Check, the following are determined:
— attenuation ranges of all internal attenuators
— calibration of the receivers
— frequency response of the receivers
—phase lock
—noise floor and trace noise
—various voltages throughout the network analyzer
Allow the network analyzer to warm up for at least 15 minutes before
performing the Operator’s Check.
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