Tektronix KEITHLEY 2600B Series User Manual

Section 9: TSP command reference Series 2600B System SourceMeter® instrument Reference Manual
9-230 2600BS-901-01 Rev. F/August 2021
smuX.measure.rangeY
This attribute contains the positive full-scale value of the measurement range for voltage or current.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
Instrument reset
SMU reset
Recall setup
Saved setup
Voltage:
2601B, 2602B, or 2604B:
100e-3 (100 mV)
2611B, 2612B, 2614B, 2634B, 2635B,
or 2636B:
200e-3 (200 mV)
Current:
100e-3 (100 mA)
Usage
rangeValue = smuX.measure.rangeY
smuX.measure.rangeY = rangeValue
rangeValue
Set to the maximum expected voltage or current to be measured
X
Source-measure unit (SMU) channel (for example, smua.measure.rangev
applies to SMU channel A)
Y
SMU measurement function (v = voltage, i = current)
Details
Reading this attribute returns the positive full-scale value of the measurement range that the SMU is
currently using. Assigning a value to this attribute sets the SMU on a fixed range large enough to
measure the assigned value. The instrument selects the best range for measuring a value of
rangeValue.
This attribute is primarily intended to eliminate the time that is required by the automatic range
selection performed by a measuring instrument. Because selecting a fixed range prevents
autoranging, an overrange condition can occur. For example, measuring 10.0 V on the 2601B,
2602B, or 2604B 6 V range or measuring 5.0 V on the 2611B, 2612B, or 2614B 2 V range causes an
overrange. The value 9.91000E+37 is returned when this occurs.
If the source function is the same as the measurement function (for example, sourcing voltage and
measuring voltage), the measurement range is locked to be the same as the source range. However,
the setting for the measure range is retained. If the source function is changed (for example, from
sourcing voltage to sourcing current), the retained measurement range is used.
2601B, 2602B, or 2604B example: Assume the source function is voltage. The source range is 1 V
and you set the measure range for 6 V. Since the source range is 1 V, the SMU performs voltage
measurements on the 1 V range. If you now change the source function to current, voltage
measurements are made on the 6 V range.
Explicitly setting a measure range disables measure autoranging for that function. Autoranging is
controlled separately for each source and measurement function: source voltage, source current,
measure voltage and measure current. Autoranging is enabled for all four by default.
Changing the range while the output is off does not update the hardware settings, but querying
returns the range setting that is used when the output is turned on. Setting a range while the output is
on takes effect immediately.
With measure autoranging enabled, the range is changed only when a measurement is made.
Querying the range after a measurement returns the range selected for that measurement.

Tektronix KEITHLEY 2600B Series Specifications

General

Brand	Tektronix
Model	KEITHLEY 2600B Series
Category	Measuring Instruments
Language	English