High Voltage SourceMeter Instrument Reference Manual Section 14:
2470-901-01 Rev. A / May 2019 14-177
smu.source.xlimit.level
This attribute selects the source limit for measurements.
Type TSP-Link accessible Affected by Where saved Default value
Instrument reset
Power cycle
Source configuration list
Source configuration list
Current: 21 V
Usage
value = smu.source.xlimit.level
smu.source.xlimit.level = value
 Current source function: -1.05 A to 1.05 A
 Voltage source function: -1100 V to 1100 V
The function for which to set the limit:
 Voltage: v
Details
This command sets the source limit for measurements. The values that can be set for this
command are limited by the setting for the overvoltage protection limit.
The 2470 cannot source levels that exceed this limit.
If you change the measure range to a range that is not appropriate for this limit, the instrument
changes the source limit to a limit that is appropriate to the range and a warning is generated.
Depending on the source range, your actual maximum limit value could be lower. The instrument
makes adjustments to stay in the operating boundaries.
This value can also be limited by the measurement range. If a specific measurement range is set,
the limit must be more than or equal to 10.6% of the measurement range. If you set the
measurement range to be automatically selected, the measurement range does not affect the limit.
Limits are absolute values.
You can use smu.source.xlimit.tripped to check the limit state of the source output.
Example
smu.source.func = smu.FUNC_DC_VOLTAGE
smu.source.ilimit.level = 1
Set the source function to voltage with the
current limit set to 1 A.
Also see
smu.source.protect.level (on page 14-164)
smu.source.xlimit.tripped (on page 14-178)
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