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《Eouipment for Geo Physical Prospecting》 1997-01
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MACHA blaster arm signal circuit modification

Liu Baojiang  
The conventional blaster have the ARM signal circuit and it can inform the shotpoint of charging or warning . People has got used to this kind of blaster. Although MACHA blaster made by MACHA compa-ny , United States wins the good reputation from customs because of its high reliability and steability ,it adopt direct firing method which is not convenient to customers. This article introduce modification desig-nation on adding ARM signal circuit and the site test. The modification can present ARM signal without in-fluence the normal work of original circuit and make MACHA blaster more perfect and convenient.
【CateGory Index】: P631.43
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