Before You Begin; Verify The Operating Environment; Protect Against Electrostatic Discharge (Esd) - Keysight Technologies N5221A Service Manual

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
Keysight personnel: see
calibration stickers 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)
— 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.
To reduce the chance of electrostatic discharge, follow all of the
recommendations outlined in
page
3-4
Once the measurement calibration has been done, the ambient
temperature must be maintained to within ± 1 °C of the calibration
temperature.
1-7, for all of the procedures in this chapter.
Figure 1-1 on page 1-6
"Electrostatic Discharge Protection" on
Keysight N5221A/22A Service Guide
to review where the