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Department · 8 products

Test & Measurement

Meters, scopes, testers and bench power

What to know

True-RMS is the specification worth checking first, because an averaging meter misreads anything that is not a clean sine wave, and today that is most loads. A meter's CAT rating (CAT II, III or IV) describes the transient energy it can survive, not just the voltage on the dial, and it is a safety spec rather than a marketing one. For anything intermittent, a handheld scope shows you what a single number never will.

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