mõõtevahend vektorsuuruse, nagu selleks on vahelduvpinge, mõõtmiseks, type of electrical test equipment that indicates both the level and difference in phase between the first and second input, two-channel high-frequency sampling voltmeter that measures phase as well as voltage of two input signals of the same frequency, kahekanaliline kõrgsageduslik testpingemõõtur, mis võimaldab mõõta sama sagedusega kahe sisendsignaali faasi ja pinget