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Keysight Technologies
Keysight Advantage Services
Guardbanding
Ensure the highest level of measurement confidence
What's a guardband?
Guardband is the offset from the specification that determines
the acceptance limit for Pass or Fail decisions, and for performing
adjustments. The "Keysight Cal + Uncertainties + Guardbanding"
service employs a guardband in the amount of the 95% expanded
measurement uncertainty.
Upper specification
] Guardband
Upper acceptance limit
Nominal
Lower acceptance limit
] Guardband
Lower specification
Figure 1. Basic Guardband
How can I learn more?
Read the technical paper "A Pragmatic Method for Pass/Fail Con- Keysight Advantage Services is committed to your success
formance Reporting that Complies with ANSI Z540.3, ISO 17025, throughout your equipment's lifetime.
and ILAC G8" by Michael Dobbert and Robert Stern. For a copy of www.keysight.com/find/advantageservices
the paper visit
www.keysight.com/find/conformancereportingpaper Infoline Web Services
The article is also available at www.keysight.com/metrology.
Manage your equipment more effectively with instant access
to in-depth product and service information such as warranty
Where can guardband measurement data be status, service history, calibration certificates and test data plus
found for my instrument? online transaction capability such as service requests, status
tracking and more. www.keysight.com/find/service
The calibrations that include guardbanding are "Keysight Cal +
Uncertainties + Guardbanding" or "Accredited Calibration" or
"Standards Lab Calibration." When Keysight Technologies, Inc.
Order Information
performs a calibration that includes guardbanding for your instru- Contact an Keysight sales representative at
ment, that information is included in the measurement report. www.keysight.com/find/assist
These reports are archived for you at Infoline Web Services.
This information is subject to change without notice.