Keysight N5221A/22A Service Guide 3-5
Tests and Adjustments
Before You Begin
Allow the Analyzer to Warm Up
Review the Principles of Connector Care
Proper connector care and connection techniques are critical for accurate and
repeatable measurements. Refer to Table 3-1 for tips on connector care.
Prior to making connections to your analyzer, carefully review the information
about inspecting, cleaning, and gaging connectors. Refer to the calibration kit
documentation for detailed connector care information.
For course numbers about additional connector care instruction, contact
Keysight Technologies. Refer to “Contacting Keysight” on page 2-7.
To achieve the maximum system stability, allow the analyzer to warm up
for at least 90 minutes.
Table 3-1 Connector Care Quick Reference Guide
Handling and Storage
Do — Keep connectors clean Do Not — Touch mating-plane surfaces
— Extend sleeve or connector nut — Set connectors contact-end down
— Use plastic end-caps during storage — Store connectors or adapters loose
Visual Inspection
Do — Inspect all connectors carefully Do Not — Use a damaged connector - ever
— Look for metal particles, scratches, and
dents
Connector Cleaning
Do — Try compressed air first Do Not — Use any abrasives
— Use isopropyl alcohol
a
• Get liquid into plastic support beads
— Clean connector threads
Gaging Connectors
Do — Clean and zero the gage before use Do Not — Use an out-of-specification
connector
— Use the correct gage type
— Use correct end of calibration block
— Gage all connectors before first use
Making Connections
Do — Align connectors carefully Do Not — Apply bending force to connection
— Make preliminary connection contact
lightly
— Over tighten preliminary connection
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