7351 Series Digital Multimeter Operation Manual
4.2.1 Measurement Functions
4-15
Figure 4-11 Diode Measurement
4.2.1.8 Frequency Measurement (FREQ)
1. Connect a DUT to the V and COM terminals on the front panel.
2. Press .
The frequency in the ACV measurement function is displayed.
The DC component of the input signal is cut by using the AC coupling and the frequency is measured
at the zero-cross point.
Measurement method: Reciprocal
Input voltage range: 100 mVrms to 700 Vrms and 10% or more of the range (Sinusoidal
wave)
The range does not mean the frequency range but the input voltage
range.
Measure the input voltage by using the ACV function and then mea-
sure the frequency by using an appropriate voltage range depending on
the input voltage. Even if the input voltage exceeds the measurement
range, the measurement is performed but the accuracy of the measured
value maybe outside of the specifications.
Gate time
Sampling rate Gate time
Measurement
frequency range
Maximum
measurement
period
Maximum
display
SLOW 1000 ms 1 Hz to 300 kHz 2.2 s 999999
MED 100 ms 10 Hz to 300 kHz 220 ms 99999
FAST 10 ms 100 Hz to 300 kHz 22 ms 9999
If the input signal cannot be detected because the period of the input signal is longer
than the gate time, 0 Hz is displayed.
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