NF WF1943B, Instruction Manual

Page: 129 / 156

WF1943B
7-1
Section 7 Maintenance
7.1 Outline·······················································································································7-2
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Work contents····································································································7-2
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Required test instruments···················································································7-2
7.2 Operation checks ·······································································································7-3
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Preparatory checks ·····························································································7-3
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Function checks ·································································································7-3
7.3 Performance tests·······································································································7-5
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Performance tests ·······························································································7-5
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Preparatory checks ·····························································································7-5
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Test preparation ·································································································7-5
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Frequency accuracy ···························································································7-5
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Amplitude accuracy ···························································································7-6
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DC offset accuracy·····························································································7-6
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Amplitude vs. frequency characteristics·····························································7-7
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Sinewave distortion····························································································7-7
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Squarewave response ·························································································7-8
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Duty factor·········································································································7-8