Keysight Technologies EXA N9010A Manual de usuario
Functional
Tests
Keysight Technologies
This manual provides documentation for the following
Analyzers:
N9010A EXA
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Manual Part Number
N9010-90013
Print Date
January 2015
Published in USA
Keysight Technologies
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4
Contents
5
Table of Contents
1. Functional Tests
Functional Test Versus Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Contents of this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Before Performing a Functional Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2. Displayed Average Noise Level (DANL)
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3. Frequency Readout Accuracy
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4. Amplitude Accuracy at 50 MHz
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Testing Preamp Option (P03) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5. Frequency Response (Flatness)
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6. Frequency Response (Flatness), Preamp On
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7. Scale Fidelity
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6
Contents
7
Keysight Technologies
N9010A EXA Signal Analyzer
Functional Tests
1 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
verification tests must be run to determine whether a problem exists.
8 Chapter 1
Functional Tests
Functional Test Versus Performance Verification
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 determine whether 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.
Chapter 1 9
Functional Tests
Contents of this Document
Contents of this Document
This chapter includes the following:
—“Before Performing a Functional Test” on page 10 (what to do first).
—“Test Equipment” on page 11 (a list of the equipment required for all of the
tests).
Subsequent chapters describe the following Functional Tests:
—“Displayed Average Noise Level (DANL)” on page 15
—“Frequency Readout Accuracy” on page 19
—“Amplitude Accuracy at 50 MHz” on page 23
—“Amplitude Accuracy at 50 MHz” on page 23
—“Frequency Response (Flatness)” on page 29
—“Frequency Response (Flatness), Preamp On” on page 33
—“Scale Fidelity” on page 37
Each functional test includes:
— Test limits (pass/fail criteria)
— A description of the test
— The equipment required for the test
— A figure showing how to connect the equipment
— Step-by-step instructions
— One or more tables in which to record the measurement results
10 Chapter 1
Functional Tests
Before Performing a Functional Test
Before Performing a Functional Test
1. Ensure that you have the proper test equipment.
2. Switch on the unit under test (UUT) and let it warm up (in accordance with
warm-up requirements in the instrument specifications).
3. Allow sufficient warm-up time for the required test equipment (refer to
individual instrument documentation for warm-up specifications).
4. Ensure that the analyzer’s frequency reference is set to Internal:
a. Press the Input/Output, More, Freq Ref In keys.
b. If the Freq Ref In softkey does not show Internal, press the Freq Ref
In softkey and select Internal.
5. Following instrument warm-up, perform the auto align routine:
Press System, Alignments, Align Now, All.
NOTE Functional test accuracy depends on the precision of the test equipment
used. Ensure that all of the test equipment is calibrated before running a
functional test.
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