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2w/4w resistance measurement – GW Instek GDM-8261A User manual User Manual

Page 34

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GDM-8261A User Manual

34

The DC current range should be manually selected when

the following conditions are true:
1. When DCI measurement is used.
2. When the signals being measured contain both DC

and AC components.

3. When the amplitude of the AC component in the

measured signal is higher or lower than the dynamic

range of the range being currently selected by
auto-range function.

DCI Current Range
Selection List

DCI Range

ADC Dynamic Range

DC 100uA

max±2mA

DC 1mA

max±2mA

DC 10A

max±40mA

DC 100A

max±200mA

DC 1A

max±1.2A

DC 10A

max±10A

2W/4W Resistance Measurement

Measurement
type

2-wire

Uses the standard V-COM ports.

Recommended for measuring resistances
larger than 1kΩ.

4-wire

Compensates the test lead effect using the
4W compensation ports, in addition to the

standard V-COM ports.
Recommended for measuring sensitive
resistances smaller than 1kΩ.

1. Activate
resistance
measurement

For 2-wire resistance measurement,
press the 2W/4W key once.

2/4W

For 4-wire resistance measurement,

press the 2W/4W key twice.

2/4W

2/4W