4 Features and Functions
144 Keysight 34970A/34972A User’s Guide
Resistance Measurement Configuration
To connect resistances to the module’s screw terminals, see page 39.
This section contains information to help you configure the instrument for making
resistance measurements. Use the 2-wire method for ease of wiring and higher
density or the 4-wire method for improved measurement accuracy. The
measurement ranges are shown below.
Offset compensation
Offset compensation removes the effects of any DC voltages in the circuit being
measured. The technique involves taking the difference between two resistance
measurements on the specified channels, one with the current source turned on
and one with the current source turned off.
Applies only to 2-wire and 4-wire ohms measurements on the 100Ω, 1 kΩ, and
10 kΩ ranges.
– For detailed information about offset compensation, see page 306.
– The instrument disables offset compensation when the measurement function
is changed or after a Factory Reset (*RST command). An Instrument Preset
(SYSTem:PRESet command) or Card Reset (SYSTem:CPON command) does
not change the setting.
– Front-Panel Operation: First, select the 2-wire or 4-wire ohms function on the
active channel. Then, go to the Advanced menu and enable or disable offset
compensation.
OCOMP ON
– Remote Interface Operation:
For 4-wire measurements, specify the paired channel in the lower bank
(source) as the <ch_list> parameter.
100Ω 1 kΩ 10 kΩ 100 kΩ 1 MΩ 10 MΩ 100 MΩ Autorange
RES:OCOM ON,(@208) Enable offset compensation (2-wire)
FRES:OCOM ON,(@208) Enable offset compensation (4-wire)
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