Keysight Technologies U1231A Guia Del Usuario página 84

2 Making Measurements
– If a reading seems to be a multiple of what you expect, the input signal may
NOTE
Figure 2-28
84
be distorted. Distortion can cause multiple triggerings of the frequency
counter. Selecting a higher voltage range might solve this problem by
decreasing the sensitivity of the multimeter. In general, the lowest frequency
displayed is the correct one.
Measuring frequency
Keysight U1231A, U1232A, and U1233A User's Guide