Section 2: General operation
Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual
2-28
DMM7510-901-01 Rev. B / May 2015
4-wire resistance measure settings
The following options are available on the Measure Settings menu when the function is set to 4-wire
resistance.
Setting
Description/reference
Range
Determines the full-scale input for the measurement; also affects
the accuracy of the measurements and the maximum signal that
can be measured. Refer to
(on page 3-3).
Auto Delay
Applies a wait period at the start of measurement to allow cables
and circuitry to settle for best accuracy. Refer to
Display Digits
Sets the number of digits that are displayed for front-panel
readings. It does not affect accuracy or speed. Refer to
(on page 2-55).
Offset Compensation
Enables or disables offset compensation. When enabled, offset
compensation reduces or eliminates thermoelectric EMFs in
low-level resistance measurements. Refer to
(on page 2-111).
Open Lead Detect
Enables or disables open lead detection. When enabled, detects
open test leads, which can lead to inaccuracies in 4-wire sensing.
Integration Rate
Controls the amount of time the input signal is measured
(aperture), which affects the noise and reading rate; see
aperture or NPLCs to adjust speed and accuracy
(on page 4-1).
Auto Zero
Determines if internal reference points are used to maintain
stability and accuracy. See
Automatic reference measurements
Count
Sets the number of aperture readings that are processed when a
measurement is requested.
Line Sync
Enables or disables line synchronization. When it is enabled, it
helps increase common-mode and normal-mode noise rejection.
Refer to
Dry Circuit
Enables or disables dry circuit. When dry circuit is enabled, it limits
the open-circuit voltage to below 20 mV. When dry circuit is
enabled, offset compensation is automatically enabled. Refer to
(on page 2-111).
