| 摘要 |
PURPOSE:To attain to enhance the speed and accuracy of a voltage margin test by automating the change in a voltage value, by performing the change in a voltage value on the basis of the program in a system power source control part. CONSTITUTION:Arbitrary voltage change indication data is set to an arbitrary DA converter in arbitrary order by the control of a voltage control processor 4 during a voltage margin test. The voltage change indication data set to DA converters 6-1-6-m receive AD conversion and the converted signals are amplified by corresponding operational amplifiers 7-1-7-m to be outputted to a DC power source part as voltage change indication signals through operational relays 8-1-8-m. In the DC power source part, a test program is performed under a deviated voltage value and a logical apparatus is tested.
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