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As we know DD test consists of both charging time(t1) and discharging time(t2). The
t1 and t2 both can be set in the control window with the help of their corresponding
arrows. The up arrow will increase the time and the down arrow will decrease the
time.
After setting up all the basic settings press the button to go back to the main
measurement screen. All these control settings are stored by the meter so that the next
time you start the meter you do not need to do these settings again.
Then connect the test leads to the equipment whose Insulation Resistance has to be
measured.
On the measurement screen press and hold the
button for about 3 seconds and
then release it to start the test.
The speaker will give 3 beeps in order to indicate that the test has started. After the test
has been completed all the parameters will be displayed(according to the meter setting)
like insulation resistance, capacitance, DAR, PI, voltage, current.
Because there are a lot of parameters to be displayed they have been divided into
three sub screens which can be scrolled using the scrolling arrows. Figure shows the
sequence of the screens along with the parameters displayed on the corresponding
screen.