PPMU Configure Current Limit
- Updated2023-02-17
- 3 minute(s) read
PPMU Configure Current Limit
Specifies the current limit for the specified pins when forcing voltage.
You must call the niDigital PPMU Source node for changes to the PPMU configuration to take effect, even if the PPMU is already sourcing.
Inputs/Outputs
behavior
Behavior of the output current when the current limit is reached.
session in
Instrument session obtained from the niDigital Initialize with Optionsnode.
channel list
List of channel names or list of pins. Do not pass a mix of channel names and pin names.
An empty string denotes all digital pattern instrument channels.
Specify channel names using the form PXI1Slot3/0,2-3 or PXI1Slot3/0,PXI1Slot3/2-3, where PXI1Slot3 is the instrument resource name and 0, 2, 3 are channel names.
To specify channels from multiple instruments, use the form PXI1Slot3/0,PXI1Slot3/2-3,PXI1Slot4/2-3. The instruments must be in the same chassis.
Site Considerations and Syntax
Pin names and pin groups apply to all enabled sites, unless the pin name explicitly specifies the site. You can specify a pin in a specific site using the form siteN/pinName, where N is the site number. This node ignores pins that are not mapped to the digital pattern instrument.
current limit
Current limit, in amps, on the pins in the channel list parameter.
error in
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Default value: No error
session out
Handle that identifies the session in all subsequent NI-Digital node calls.
error out
Error information.
The node produces this output according to standard error behavior.
Forcing voltage with the PPMU Configure Output node
When forcing voltage by setting the niDigital PPMU Configure Output node to DC Voltage, the current sourced or sunk is clamped to the specified current limit. Select the smallest current limit that meets the expected current requirements of the DUT. If the current required by the DUT exceeds the selected current limit range, the voltage output may not meet the specified voltage level. Choose a larger current limit range if needed.
Not all instruments support this capability. Refer to the Current Limit Supported property to programmatically determine whether an instrument supports this capability. If high-accuracy current clamping functionality is required, consider using a Source Measure Unit (SMU) instrument.