| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To dispense with manual work for adjusting gain of an amplifier amplifying glass destruction sensor output when shipping from a factory and shorten TAT. <P>SOLUTION: A vehicle anti-theft device has the amplifier 18 amplifying output of a glass destruction sensor 10, a sensitivity adjusting part 20 adjusting gain of the amplifier 18, a storage means storing sensitivity data of the mounted glass destruction sensor in advance, and a control means setting gain of the amplifier. A gain adjusting part has resistance having a plurality of kinds of adjusted resistance values for adjusting gain by corresponding to type of sensitivity of the mounted glass destruction sensor. The control means reads the sensitivity data of the glass destruction sensor stored in the storage part and selects corresponding resistance among a plurality of kinds of resistance in the gain adjusting part based on the sensitivity data to set gain. <P>COPYRIGHT: (C)2004,JPO</p> |
