Keithley DMM7510 Reference Manual

Model DMM7510
7½ Digit Graphical Sampling Multimeter Reference Manual Section 8:
TSP command reference
DMM7510-901-01 Rev. B / May 2015 8-137
dmm.measure.bias.actual
This attribute returns the amount of current the instrument is sourcing when it makes measurements.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (R) Yes Not applicable Not applicable Not applicable
Usage
value = dmm.measure.bias.actual
value
The actual bias level
Functions
dmm.FUNC_DC_VOLTAGE
dmm.FUNC_RESISTANCE
dmm.FUNC_ACV_FREQUENCY
dmm.FUNC_AC_VOLTAGE
dmm.FUNC_4W_RESISTANCE
dmm.FUNC_ACV_PERIOD
dmm.FUNC_DC_CURRENT
dmm.FUNC_DIODE
dmm.FUNC_DCV_RATIO
dmm.FUNC_AC_CURRENT
dmm.FUNC_CAPACITANCE
dmm.FUNC_DIGITIZE_CURRENT
dmm.FUNC_TEMPERATURE
dmm.FUNC_CONTINUITY
dmm.FUNC_DIGITIZE_VOLTAGE
Details
Reads the actual amount of current that is sourced by the instrument when a measurement is made.
For the 1 Ω to 1 MΩ ranges, a constant current source is used to calculate resistance. The
dmm.measure.bias.actual attribute returns the calibrated current for the programmed range. For
the 10 MΩ to 1 GΩ ranges, the Model DMM7510 uses the ratiometric technique. Ratiometric ohms
measurement has lower noise and better repeatability for testing devices at ranges greater than
1 MΩ, but has variable current through the device under test (DUT). The
dmm.measure.bias.actual attribute returns the ideal maximum current when the DUT is at 0 Ω
(0.69 µA).
Example
print(dmm.measure.bias.actual)
Read the actual bias level.
Also see
dmm.measure.bias.level (on page 8-138)

Keithley DMM7510 Specifications

General

Brand	Keithley
Model	DMM7510
Category	Multimeter
Language	English