Hioki RM3545-02 - Setting Pre-Measurement Delay

4.9 Setting Pre-Measurement Delay
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This function adjusts the time for measurement to stabilize by inserting a waiting period
after use of the OVC or the auto range function to change the measurement current. When
this function is used, the instrument waits for its internal circuitry to stabilize before starting
measurement, even if the measurement target has a high reactance component.
If the measurement target, for example, is an inductor that takes longer to stabilize after
applying a measurement current, and it cannot be measured with the initial delay (default),
adjust the delay. Set the delay time to approximately ten times the following calculation so
that the reactance component (inductance or capacitance) does not affect the measure-
ment.
The delay setting can be selected from a preset (internal fixed value) or user-set value.
(1) Preset (internal fixed value)
Value depends on the range and offset voltage correction function.
(2) User-set value
Setting range: 0 to 9999 ms
The set value is used for all ranges.
4.9 Setting Pre-Measurement Delay
L...... Inductance of measurement target
R...... Resistance of measurement target + test leads + contacts
I....... Measurement current (see “Accuracy” (p.251))
V
O
... Open-terminal voltage (see “Accuracy” (p.251))
L
R
t = − ln
1 −
I R
V
O
LP ON
Delay
1
LP OFF (unit: ms)
Range
100 M range
high-precision
mode
Measure-
ment cur-
rent
Delay
OVC: OFF OVC: ON
10 m − − 75 25
100 m
− High 250 25
− Low 20 2
1000 m
− High 50 2
− Low 5 2
10 
−
High 20 2
−
Low 5 2
100 
−
High 170 2
−
Low 20 2
1000  − − 170 2
10 k − − 180
−
100 k
− −
95
−
1000 k
− −
10
−
10 M −
−
1
−
100 M ON
−
500
−
100 M OFF
−
1
−
1000 M OFF
−
1
−