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Recertification of ECal Modules
The suggested interval for recertification is 12 months. After reviewing the results of the
initial recertification, you may establish a shorter interval that reflects greater use and
wear of the module.
Where to Send a Module for Recertification
Contact Agilent for information on where to send your kit for recertification. See
"Contacting Agilent" on page
instructions on the preparation of returning the device.
How Agilent Verifies Your ECal Module
Agilent verifies the specifications of these devices as follows:
1. The residual microwave error terms of the test system are verified with precision
airlines and shorts or low frequency resistance that are directly traced to the National
Institute of Standards and Technology (NIST). The airline and short characteristics are
developed from mechanical measurements. The mechanical measurements and
material properties are carefully modeled to give very accurate electrical
representation. The mechanical measurements are then traced to NIST through
various plug and ring gages and other mechanical measurements.
2. Each module is electrically tested on this system to the specification listed in
"Specifications and Characteristics."
These two steps establish a traceable link to NIST for Agilent to the extent allowed by the
institute's calibration facility. The specifications data provided for the module are traceable
to NIST through Agilent Technologies.
What Is Provided with a Recertification
• a new calibration sticker affixed to the module
• a certificate of calibration
• a list of United States National Institute of Standards and Technology (NIST) traceable
numbers
• a calibration report for each traceable module listing measured values, specifications,
and uncertainties
• a new set of S-parameter data (embedded in module memory) if the old set of
S-parameters data no longer allows for a calibration that meets all performance
specifications
Agilent Technologies offers different types of calibration for the recertification of the
module. For more information, contact Agilent. See
Chapter 1
1-15. Refer to
"Returning Devices to Agilent" on page 1-16
Service and Recertification
"Contacting Agilent" on page
General Information
for
Chapter 5,
1-15.
1-17
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