37
Insulation Resistance Measurement
7
Turn off the MEASURE key with the test leads connected
to the measuring object.
The last measured values and are displayed and starts
discharging. (p. 39)
• Do not switch the function to other function or rated voltage when the
measurement is in progress.
• The instrument will return to the locked state when about 1 minute of no
operation elapses during measurement in the 500 V and 1000 V ranges. To
continue measurement, release the lock. (p. 35)
Displaying 1-minute Values (IR4057-50 only)
This function is only available on the IR4057-50.
The function cannot be used if the comparator function has been
enabled. Disable the comparator function before use. (p. 33)
This function automatically retains the measured value (1-minute
value) 1 minute after the start of measurement (after the MEASURE
key is turned on). Use this function when measuring a object such
as a cable that includes a capacitance component.
Retained measured value
• No value is shown if less than 1 minute has
elapsed since the start of measurement.
1
2
4
5
6
7
付録索引
3