Agilent Technologies E4406A, Руководство пользователя

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140 Chapter 5
Functional Testing
What You'll Find in This Chapter
What You'll Find in This Chapter
This chapter is divided into two sections. The first, “Getting Started,” is
a brief description of what functional tests are and what you will need
to perform them. The second,
“Test Descriptions,” is the test section
that describes the various tests and their implementation.
What Are the Functional Tests?
Functional tests are tests of various instrument parameters that give a
high degree of confidence that the instrument is operating correctly.
The test will take approximately one (1) hour to complete. They are
recommended as a check of instrument operation for incoming
inspection or after a repair. Measurement uncertainty analysis is not
available for functional tests, and the instrument is checked against
limits that are wider then the published specifications. The functional
tests are designed to test an instrument operating within the
operational temperature range defined by the instrument specifications
using a minimum set of test equipment. If a test does not pass, the more
thorough Performance Tests must be run to confirm a problem exists.
The functional tests included in this chapter are found in the section
titled
“Test Descriptions” on page 143 .
Functional Test Versus Performance Verification
Performance verification tests check a wide range of instrument
parameters and provide the highest level of confidence that the
instrument is operating satisfactorily and are used to verify it conforms
to published specifications. They are time consuming and require
extensive test equipment. The functional tests checks a much smaller
range of parameters and a limited number of data points for each
parameter. They require only limited test equipment and check that the
transmitter tester is functioning correctly, but in no way verify
conformance to published specifications.