User`s guide

Making Measurements 2

Measuring Frequency

U1273A/U1273AX User’s Guide 83

Figure 2-38 Frequency display

The frequency of the input signal is shown in the primary

display. The voltage or ampere value of the signal is shown

in the secondary display. The bar graph does not indicate

frequency but indicates the voltage or ampere value of the

input signal.

Press to cycle through the frequency, pulse width, and

duty cycle measurements.

Press for more than 1 second to exit the frequency

measurement function.

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.

• If a reading seems to be a multiple of what you expect, the input signal

may 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.

Exit

Dual