AC 150/5340-26B, Maintenance of Airport Visual Aid ...

The best advice when purchasing this or any type of test equipment is to buy the best you can possibly afford. Always make sure that the DMM you use is a true RMS type and that the accessories are of the highest accuracy (see Paragraph 4.1.5). A DMM with a good quality amp-clamp accessory is a good combination for measuring the output current of constant current regulators. It is sometimes ... ................
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