Smu.source.highc; Smu.source.level - Keithley 2450 Reference Manual

Model 2450 Interactive SourceMeter® Instrument Reference Manual

smu.source.highc

This attribute enables or disables high capacitance feature.
Type TSP-Link accessible
Attribute (RW) Yes
Usage
state = smu.source.highc
smu.source.highc = state
state
Details
When the instrument is measuring low current and is driving a capacitive load, you may see overshoot, ringing,
and instability. You can enable the high capacitance feature to minimize these problems.
High-capacitance settings apply when operating using the 10 nA through the 100 mA current ranges. When
operating using the 1 A range, the high-capacitance setting will not affect the instrument rise time or current
measure settling time.
Example
smu.source.highc = smu.ON
Also see
High capacitance operation

smu.source.level

This attribute immediately selects a fixed amplitude for the selected source function.
Type TSP-Link accessible
Attribute (RW) Yes
Usage
sourceLevel = smu.source.level
smu.source.level = sourceLevel
sourceLevel
2450-901-01 Rev. B/September 2013
Affected by
Restore configuration
Instrument reset
Power cycle
Source configuration list
Function change
Turn high capacitance off: smu.OFF or 0
Turn high capacitance on: smu.ON or 1
(on page 4-21)
Affected by
Restore configuration
Instrument reset
Power cycle
Source configuration list
Function change
Current: -1.05 A to 1.05 A
Voltage: -210 V to 210 V
Section 8: TSP command reference
Where saved Default value
Configuration script smu.OFF
Source configuration list
Turn the high capacitance feature on.
Where saved Default value
Configuration script 0
Source configuration list
8-135