Hioki IR4056 - Lock Function

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2.4 Insulation Resistance Measurement
索引
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2.4.1 Lock Function
In order to prevent the inadvertent application of 500 V or 1,000
V to a low-voltage device, the instrument provides a lock
function. This function will prevent the test voltage from being
output even if the MEASURE key is pressed while the rotary
selector is set to the 500 V or 1,000 V range.
Releasing the lock
1.
Setting the rotary selector to the 500 V or 1,000 V range
will cause (IR4057) or (IR4056) to
light up, and will flash yellow.
On
Flashing