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14.4 Internal Block Diagram
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14.4.4 Waveform Peak Value Measurement Circuit
Reset
U waveform
I waveform
Absolute value
U
/
I
switching
Absolute value
14.4.5 Crest Factor
The waveform peak value is obtained by passing the signal waveform after
absolute value detection through an analog peak hold circuit.
The crest factor indicated the magnitude of the dynamic range of the tester,
and is given by the following expression:
Peak value
Crest factor =
─────
RMS value
For example, when measuring a highly distorted waveform with a small
effective value but a large peak value, if the measurement range is set to
match the effective value the peak value of the distorted waveform will
exceed the operating limits of the circuit, and produce a large measurement
error. Therefore, for accurate measurement, it is important to know the
magnitude of the peak value of the measured signal.
For the 9600 the crest factor is stipulated as not more than 6 (but without
exceeding the maximum input voltage and current).
For example, in the 150 V range, the error is increased if the voltage
waveform has a peak value exceeding 150 V
×
6 = 900 V.
Summary of Contents for Power HiTester 3193
Page 2: ......
Page 50: ...32 3 9 Operations During Power Failure ...
Page 76: ...58 4 13 Degaussing ...
Page 80: ...62 5 2 Setting the Frequency Range fa ...
Page 108: ...90 9 3 Internal Circuit for the External Control and Timing ...
Page 112: ...94 10 3 Output Rate ...
Page 250: ...232 13 9 Error and Overflow Displays ...
Page 278: ...260 17 5 Internal Block Diagram ...
Page 284: ...266 19 2 Installation Procedures For JIS standard For EIA standard External Dimensions ...
Page 300: ...282 20 4 Internal Block Diagram of the 3193 ...
Page 306: ...INDEX 4 Index ...
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