Keithley 2611B Reference Manual

Series 2600B
System SourceMeter® Instrument Reference Manual Section 7:
TSP command reference
2600BS-901-01 Rev. B / May 2013 7-99
Details
Output data includes transconductance values, reading buffer with measured voltages, reading buffer with
measured voltages and currents.
If all parameters are omitted when this function is called, this function is executed with the parameters set to the
default values.
The gm_isweep() function performs a linear current sweep, measuring voltage and current, and then
calculating the transconductance (Gm) at each point using the central difference method. It can return an array of
Gm values, a reading buffer with the measured voltages, and a reading buffer with the measured currents.
Example
gm_array = gm_isweep(smua, 0, 0.01, 20)
gm_array, vbuf = gm_isweep(smua, 0, 0.01, 20)
gm_array, vbuf, ibuf = gm_isweep(smua, 0,
0.01, 20)
Source-measure unit (SMU) A returns Gm
values only.
SMU A returns Gm and reading buffer with
measured voltages.
SMU A returns Gm and reading buffers with
measured voltages and currents.
Also see
gm_vsweep() (on page 7-99)
KIParlib factory script (on page 5-22)
gm_vsweep()
This KIParlib factory script function performs a linear voltage sweep and calculates the transconductance (Gm) at
each point.
Type TSP-Link accessible
Affected by Where saved Default value
Function
No
Usage
gm_array, ibuf, vbuf = gm_vsweep(smu, start_v, stop_v, points)
gm_array
A Lua table containing the calculated Gm values at each point
ibuf
A reading buffer containing the measured current at each point
vbuf
A reading buffer containing the measured voltage at each point
smu
System SourceMeter
®
instrument channel (for example, smua refers to SMU
channel A)
start_v
Starting voltage level of the sweep
stop_v
Ending voltage level of the sweep
points
Number of measurements between
start_v
and
stop_v
(must be ≥ 2)
Details
Output data includes transconductance values, reading buffer with measured currents, reading buffer with
measured currents and voltages.
The gm_vsweep() function performs a linear voltage sweep, measuring voltage and current, and then
calculating the transconductance (Gm) at each point using the central difference method. It can return an array of
Gm values, a reading buffer with the measured currents, and a reading buffer with the measured voltages.

Keithley 2611B Specifications

General

Brand	Keithley
Model	2611B
Category	Measuring Instruments
Language	English