Unidirectional Mode - Megger DLRO-10 Guide De L'utilisateur

Test Modes
The time required for a stable reading may vary from a few seconds up
to several minutes depending on the inductance and resistance of the
test sample. There is no time limit for the inductive mode test, which will
continue until the operator presses the Test button.
When the test is terminated, the "I" lamp will remain illuminated on the
DLRO 10 or the message "Discharging" will appear on the DLRO 10X
display until any stored energy has discharged. When these messages are
extinguished it should be safe to disconnect the "C" leads.
However, the discharge indicator is an active electronic device and should
not be relied upon. You should observe your organisation's operating
procedures.
At the end of the test both instruments will display the measured
resistance, the DLRO 10 will flash the relevant current lamp while the
DLRO 10X will display the test current used on the display.
Please note:- In inductive mode the 10A test current will not be
used.
Undirectional mode
On the DLRO 10X only, this mode makes the measurement as in
automatic mode but using forward current only.
This mode speeds up measurments on samples that are known to be free
of any standing voltages or thermal emfs. However the accuracy of the
reading may be degraded by any thermal emfs but should not be worse
than 0.2% ± 30 digits.
Since current is only applied in the forward direction, in this mode only a
single resistance value will be displayed.
A test may be repeated by breaking contact and reapplying the test probes
or by pressing the Test button.
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