| 摘要 |
PROBLEM TO BE SOLVED: To quickly and safely limit an output during trouble by troubleshooting a D/A converter more quickly and more safely. SOLUTION: When troubleshooting a D/A converter 2, digital data to be D/A converted is stored in a D/A conversion data storing buffer 11. D/A-converted analogue data is converted by an A/D converter 4, and A/D-converted digital data is stored in an A/D conversion data storing buffer 5. Whether a difference of digital data is within a tolerable error or not is always judged by a comparator 8, for controlling an output of the D/A converter 2. Thus, troubleshooting the D/A converter 2 is performed more quickly and safely, to quickly and safely limit an output during trouble. COPYRIGHT: (C)2009,JPO&INPIT
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