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2w/4w resistance measurement, E30) – GW Instek GDM-8200A User Manual User Manual

Page 30

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GDM-8200A Series User Manual

30

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.

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

2. 2W resistance
mode display
appears

2W(4W) + Ω Indicates 2W(4W) Resistance mode

AUTO

Indicates Automatic range selection

10M

2nd display shows the Resistance range

3. Connect the
test lead and
measure

Connect the test lead. For 2-wire resistance, use the Ω (V)

and the COM port. For 4-wire resistance, use the Ω (V)
and the COM port, plus the 4W sense, and LO port for

sensing. The display updates the reading.

2W connection

COM

4W connection

COM

4W

SENSE

LO