PPMU Configure Voltage Limits
- Updated2023-02-17
- 3 minute(s) read
PPMU Configure Voltage Limits
Specifies the voltage limit high, or high clamp voltage (VCH), and voltage limit low, or low clamp voltage (VCL), for the specified pins when forcing current.
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
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.
voltage limit high
The nominal voltage at the pin at which the high side voltage clamp activates when the PPMU forces current to the DUT.
voltage limit low
The nominal voltage at the pin at which the low side voltage clamp activates when the PPMU forces current to the DUT.
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 current using the PPMU Configure Output node
When forcing current by setting the niDigital PPMU Configure Output node to DC Current, the voltage is clamped to the specified voltage limits. Select the smallest voltage limits appropriate for the DUT.
If the voltage required by the DUT exceeds the specified voltage limits, the current output may not meet the specified current level. Choose larger voltage limits as needed and appropriate for the DUT.