
112
Chapter 2
Functional Tests
What You Will Find in Chapters 2, 3, and 4
Functional T
ests
What You Will Find in Chapters 2, 3, and 4
This chapter describes the functional tests and provides information on how to perform
them.
What Are the Functional Tests?
Functional tests are tests of various instrument parameters that give a high degree of
confidence that the analyzer is operating correctly. They are recommended as a check of
analyzer operation for incoming inspection or after a repair. Measurement uncertainty
analysis is not available for functional tests, and the analyzer is checked against limits
that are wider than the published specifications. The functional tests are designed to test
an analyzer operating within the temperature range defined by the analyzer specifications
using a minimum set of test equipment. If a test does not pass, performance tests must be
run to confirm a problem exists.
Functional Test Versus Performance Verification
Functional tests use a minimum set of test equipment to check a much smaller range of
parameters (and a limited number of data points for each parameter) than do performance
verification tests. Functional tests use limits that are wider than the published
specifications; measurement uncertainty analysis is
not
available for functional tests.
NOTE
If a functional test does not pass, you must run performance verification tests
to confirm that a problem exists.
Performance verification tests span a wide range of instrument parameters and provide
the highest level of confidence that the instrument conforms to published specifications.
These tests can be time consuming and require extensive test equipment.
Chapters 2, 3, and 4 include the following:
•
“Before Performing a Functional Test” on page 114
(what to do first).
•
(a list of the equipment required for
all
of the tests).
•
(
PSA only
, Chapter 3):
—
“Amplitude Accuracy at 50 MHz” on page 120
—
“Displayed Average Noise Level (DANL)” on page 125
—
“Frequency Readout Accuracy” on page 127
—
“Frequency Response (Flatness)” on page 129
—
“Amplitude Linearity” on page 133
—
Summary of Contents for ESA Series
Page 6: ...6 Contents Table of Contents ...
Page 32: ...32 Instrument Messages Alphabetical Listing Instrument Messages ...
Page 33: ...33 Instrument Messages 1 Instrument Messages ...
Page 111: ...111 Functional Tests 2 Functional Tests ...
Page 118: ...118 Chapter2 Functional Tests Test Equipment Functional Tests ...
Page 119: ...119 PSA Functional Tests 3 PSA Functional Tests ...
Page 139: ...139 ESA Functional Tests 4 ESA Functional Tests ...