Comparison of four LCR meters with ac resistors in
frequency range up to 1 MHz. The same sets of standard
ac resistors were measured at frequencies 100 kHz and 1
MHz. An example of the measurement results performed at
100 kHz is presented in Figure 1. According to the
specifications, the uncertainty of the E1 type resistors is
less than 0,1 % up to a frequency of 1 MHz [6]. The
measurement results are in a good agreement, although the
deviations slightly exceed the combined measurement
uncertainty at resistance values 95 k