Pulse pattern generating apparatus
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United States of America Patent
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Apr 21, 2009
Grant Date -
Mar 17, 2005
app pub date -
Jul 23, 2004
filing date -
Sep 16, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An object of this invention is to realize a pulse pattern generating apparatus that outputs a test signal of high waveform quality even when the shape of an eye pattern is changed. This invention is an improvement of a pulse pattern generating apparatus that generates a test signal of a predetermined pattern by using plural digital-analog converters and outputs the test signal to a test subject. The apparatus includes: a parameter setting unit for setting values of plural parameters that determine the shape of an eye pattern of the test signal; a storage unit for storing output values to the digital-analog converters corresponding to the values of the parameters; an arithmetic operation unit for calculating output values to the digital-analog converters from the values of the parameters from the parameter setting unit and the output values in the storage unit; and a voltage value setting unit for setting, for the digital-analog converters, voltage values to be outputted from the digital-analog converters on the basis of the result of calculation by the arithmetic operation unit.
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