KYORITSU 6201 User Manual
Page 14
WARNING
●
When the voltage of mains power supply is 265V or more, "HI-V" is
displayed on the LCD and buzzer sounds (discontinuous sounds). In that
case, disconnect the mains cord of the instrument from main power supply.
5.2.3 NULL setting
Criteria of judgment for Earth Continuity is 1
Ω
, and it is low value.
So even the resistance of Test Leads will affect the measurement result.
This instrument, M-6201, can cancel the resistance of Test lead by pressing
switch. The procedure of NULL setting is shown below.
The NULL function is not released even if power off the instrument, therefore,
there's no need to do NULL setting at every measurement.
However, when replacing fuses or test leads, it is recommended to do NULL
setting again
Procedure:
(1) Set the range switch to Earth Appliance Test range.
(2) Connect the mains supply and the instrument with M7123 mains cord.
！
―
12
―
Fig.9
250
Ｖ
/ 500
Ｖ
NULL
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