Keithley DMM7510 Reference Manual

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 Ranges (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 Auto Delay (on
page 2-137).
Display Digits
Sets the number of digits that are displayed for front-panel
readings. It does not affect accuracy or speed. Refer to Setting the
number of displayed digits (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 Offset-compensated
ohms (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 Using
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
(on
page 2-149).
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 Line cycle synchronization (on page 4-1).
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
Dry circuit ohms (on page 2-111).

Keithley DMM7510 Specifications

General

Resolution	7.5 digits
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	10 µA to 10 A
Resistance Range	10 Ω to 1 GΩ
Sampling Rate	1 MS/s
Memory	27.5 million readings
Display	5 inch capacitive touchscreen
AC Voltage Accuracy	±0.06% of reading
AC Current Range	10 A
Connectivity	USB, LAN, GPIB