Measuring Duty Cycle - UNI-T UT107 Operating Manual

Model UT107: OPERATING MANUAL
J. Measuring Duty Cyle (see figure 11)
Warning
To avoid harm to yourselves, never attempt to input
an effective voltage over 60V in DC or 30V in AC.
To measure duty cycle, connect the Meter as follows:
1.
Insert the red test lead into the Hz terminal and the
b l a c k t e s t l e a d i n t o t h e C O M t e r m i n a l .
2.
Set the rotary switch to Duty%.
3.
Connect the test leads across with the object being
measured.
4.
The measured value shows on the display, the unit
is %.
Note
l
This measurement method is applicable to input scope
<30Vrms. When the input scope
protection circuit may move which cause cannot get
any reading.
l
When duty cycle testing has been completed,
disconnect the connection between the temperature
probe and the circuit under test.
( figure 11)
30Vrms, the input
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