Hioki DSM-8542, Instruction Manual, Page: 135 / 140

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(1) Set the meter as follows.
● Integral time (SAMPL) 300ms
● Trigger mode (TRIG) Internal (INT)
● Averaging (AVE) ON
● Self-calibration (CALIBRATION) Auto execute (AUTO MODE: ON)
(INTERVAL) 60s
● Measuring voltage (MES. V) 10V
● Measuring mode (MODE) Current measurement
(2) Connect reference resistance of 100k Ω between the “INPUT” and “OUTPUT”
terminals.
(3) Connect a voltmeter between the “OUTPUT” terminal and “INPUT” terminal.
(4) Set the measuring voltage to 10V.
(5) Set the measuring mode to the Current Measuring mode.
(6) Set the current measuring range to the 100
μ A range (“HOLD 1”).
(7) Measure and calibrate the 100 μ A range.
(8) Change the reference resistance to 1M Ω , set the current measuring range to the
10 μ A range (“HOLD 2”) and similarly calibrate the 10 μ A range.
(9) Calibrate each range by the same method by changing the reference resistance
and range. Calibrate the maximum sensitivity, 10pA range, at reference
resistance of 100G
Ω and measuring voltage of 1V.
The relationship between the reference resistance and current measuring range is shown
below.
Measuring
Voltage
Reference
Resistance
Current Range
10V 100k Ω 100µA ([HOLD1])
10V 1M Ω 10µA ([HOLD2])
10V 10M Ω 1µA ([HOLD3])
10V 100M Ω 100nA ([HOLD4])
10V 1G Ω 10nA ([HOLD5])
10V 10G Ω 1nA ([HOLD6])
10V 100G Ω 100pA ([HOLD7])
1V 100G Ω 10pA ([HOLD8])
[Caution] Note that the full-scale value of the current measuring range varies depending on
the integral time. (See 5.2.5 “Setting measuring range”)
10.3 Self-calibration
Function
This meter has a self-calibration function and can continue self-calibration at a preset
interval by setting an interval. By setting this function ON, an accuracy can be maintained
for a long time.
During a preshipment factory inspection, this meter is set to self-calibration function ON
and 60s as a self-calibration interval.
Self-calibration is performed by measuring an offset current and gain of the current
measuring unit and measured results are corrected by providing reference voltage and
reference resistance inside.