Agilent Technologies U1231A Guía de usuario descargar pdf (Pagina 81)

Making Measurements 2

Measuring Frequency

U1231A/U1232A/U1233A User’s Guide 63

Figure 2-26 Frequency definition

Figure 2-27 Frequency display

Rise Time Fall Time

+ Width – Width

Period

90%

50%

10%

NOTE

• Pressing controls the input range of the primary function (voltage

or ampere) and not the frequency range.

• The frequency of the input signal is shown in the primary display, and

the bar graph does not indicate the frequency value but indicates the

voltage or ampere value of the input signal.

NOTE

Observe the following measurement techniques:

• If a reading shows as 0 Hz or is unstable, the input signal may be below

or near the trigger level. You can usually correct these problems by

manually selecting a lower input range, which increases the sensitivity

of the multimeter.

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Agilent Technologies U1231A Guía de usuario Pagina 81