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Digital Voltmeter (DVM) and Frequency Counter
10.2.2
To Select the Measurement Source
Press Source, then rotate the multifunction knob
then press down the knob to select the source. You can also press Source
continuously or enable the touch screen to select it. Analog channels (CH1-CH4),
digital channels (D0-D15), and EXT can all be selected as the source of the frequency
counter.
10.2.3
To Select the Measurement Item
The measurement items supported by the frequency counter of this oscilloscope
include Frequency, Period, and Totalize measurements. Wherein, Totalize indicates the
count of edge events on the signal.
Press Measure in the "Counter" menu, then rotate the multifunction knob
select the desired measurement item, and then press down the knob to select the
item. You can also press Measure continuously or enable the touch screen to tap the
desired measurement item and select it.
10.2.4
To Set the Resolution
For Period and Frequency measurements, you need to set the readout resolution.
Press Resolution, then rotate the multifunction knob
keypad to set the resolution. The range of resolution is from 3 bits to 6 bits. By
default, it is 5 bits.
NOTE
The greater the resolution, the longer the gate time. In this way, the measurement time will be
longer.
10.2.5
To Clear Count
When "Totalize" is selected under Measure, the oscilloscope measures the count of
edge events on the signal. At this time, press Clear Count to clear the measurement
results.
10.2.6
To Enable or Disable the Statistical Function
For Period and Frequency measurements, you can enable the frequency counter
statistical function. Press Statistic continuously to enable or disable the statistical
function. When enabled, the maximum value and minimum value will be displayed in
the frequency counter data, as shown in the following figure.
202
to select the desired source, and
or use the pop-up numeric
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