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Tests and Adjustments
Before You Begin
Before You Begin
Before checking, verifying, or adjusting the analyzer, refer to the following paragraphs to:
• make sure the operating environment is within its requirements
• make sure that proper electrostatic discharge (ESD) protection is provided
• make sure the analyzer has warmed up properly to achieve system stability
• review the principles of connector care
IMPORTANT Keysight personnel: see
should be placed on the PNA.
Verify the Operating Environment
Due to their operating specifications, the verification and calibration kit devices determine your operating
environment conditions. Open the calibration and verification kits and place all the devices on top of the
foam inserts so they will reach room temperature. As the device dimensions change with temperature, their
electrical characteristics change as well.
It is necessary to keep the environmental levels within the following limits:
• Temperature: +23 C ± 3 C (Error-corrected temperature range)
Once the measurement calibration has been done, the ambient temperature must be maintained to
within 1 C of the calibration temperature.
• Humidity: 0% to 95% at 40 C maximum, non-condensing
• Altitude: 0 to 4,600 meters (15,000 feet.)
Protect Against Electrostatic Discharge (ESD)
This is important. If not properly protected against, electrostatic discharge can seriously damage your
analyzer, resulting in costly repair.
CAUTION
To reduce the chance of electrostatic discharge, follow all of the recommendations outlined
in
"Electrostatic Discharge Protection" on page
Allow the Analyzer to Warm Up
NOTE
To achieve the maximum system stability, allow the analyzer to warm up for at least 90
minutes.
3-4
Figure 1-1 on page 1-5
to review where the calibration stickers
1-6, for all of the procedures in this chapter.
PNA Series Microwave Network Analyzers
Service Guide N5222-90001
N5221A/22A
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Table of Contents
Troubleshooting
