Hioki dt4212 - Measuring Duty Ratio

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Measuring Duty Ratio
3.8 Measuring Duty Ratio
The duty ratio (or duty factor) indicates the ratio of the pulse width
and pulse repetition frequency. The instrument displays the ratio as
a percentage (%).
Duty ratio for the plus slope (D+): D+ = tw+/T ×100 (%)
T
tw
+
0 V
t
Red
Black
1
2
3
3
4
4
2
2
2
2
2
2
Hz/%
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
The duty ratio for the pulse is
measured.
When measuring duty ratio of AC voltage and AC current
For the AC voltage measurement, use the ACV setting, and for the AC current
measurement, use the ACA, ACmA, or ACA setting. The duty ratio can be
checked by pressing the Hz/% key twice. The voltage (current) range is fi xed
to the range before the Hz/% key is pressed.