Hioki DSM-8542, Instruction Manual, Page: 13 / 140

3
2 Specification
2.1 Measurement Performance
Measuring Channels
Measuring Channels 4 channels simultaneous measurement
Measuring input/output terminal
[INPUT]
Measurement input [OUTPUT]
Voltage output [A(-), B(-)]
Voltage input [CH1 (+), CH2 (+),
CH3 (+), CH4 (+)]
4 channels front panel (Input connector for
insulation resistance meter to HIOKI
specification)
4 channels front panel (Binding post)
2 channels rear panel (multi connector)
4 channels rear panel (multi connector)
4 channels rear panel (multi connector)
Channel separation Common connection between CH1 and CH2
Common connection between CH3 and CH4
Separated between CH1 and CH2 and between
CH3 and CH4
2.1.1
DC current measurement
Current Measurement
Measuring
Range
Maximum
Indication
Resolution Accuracy
10 pA
100 pA
1 nA
10 nA
100 nA
1 µA
10 µA
100 µA
9.9999 pA
99.999 pA
999.99 pA
9.9999 nA
99.999 nA
999.99 nA
9.9999 µA
99.999 µA 0.1 fA
1.0 fA
10 fA
100 fA
1 pA
10 pA
100 pA
1 nA
± (3.0% of rdg + 1.2% of range)
± (1.5% of rdg + 0.6% of range)
± (0.6% of rdg + 0.6% of range)
± (0.4% of rdg + 0.5% of range)
± (0.4% of rdg + 0.5% of range)
± (0.4% of rdg + 0.5% of range)
± (0.4% of rdg + 0.5% of range)
± (0.4% of rdg + 0.5% of range)
1) Measuring time Typically 300ms with averaging process ON.
2) Temperature range 23 ±5°C, humidity 85% or less
3) Mode Self-calibration automatically executed at 1 minute interval
4) Averaging process On
[Remarks]
The resistance measurement accuracy greatly affects the accuracies of voltage
impressed and of current measured. The DSM-8542 specifies only the current accuracy
as a specification. The resistance accuracy is calculated by the following formula
assuming current measurement is a full-scale value. Normally, measured currents are
lower than currents on a full scale and “resistance accuracy > current accuracy” is a
normal value.
Resistance accuracy = Current accuracy + Voltage accuracy Accuracy
(Resistance on full-scale current) (On full-scale current)