Determines whether the device sources the power its source configuration requires or a specific wattage you request; determines whether NI-DCPower proactively checks that this sourcing power is within the maximum per-channel and overall sourcing power of the device.

When this property configures NI-DCPower to perform a sourcing power check, a device is not permitted to source power in excess of its maximum per-channel or overall sourcing power. If the check determines a source configuration or power request would require the device to do so, NI-DCPower returns an error.

When this property does not configure NI-DCPower to perform a sourcing power check, a device can attempt to fulfill source configurations that would require it to source power in excess of its maximum per-channel or overall sourcing power and may shut down to prevent damage.

Note NI-DCPower uses the terms "source" and "output". However, while sinking with electronic loads and SMUs these correspond to "sinking" and "input", respectively.
Note This property is not supported by all devices. Refer to Supported Properties by Device for information about supported devices. Devices that do not support this property behave as if this property were set to Disabled .

Default Value : Refer to Supported Properties by Devices for the default value by device.

Remarks

The following table lists the characteristics of this property.

Short Name Power Allocation Mode
Data type ci32.png
Permissions Read/Write
High-level VIs N/A
Channel-based Yes
Instrument-based No
Resettable No
Disabled 1058

The device attempts to source, on each active channel, the power that the present source configuration requires; NI-DCPower does not perform a sourcing power check. If the required power is greater than the maximum sourcing power, the device attempts to source the required amount and may shut down to prevent damage.
Automatic 1059

The device attempts to source, on each active channel, the power that the present source configuration requires; NI-DCPower performs a sourcing power check. If the required power is greater than the maximum sourcing power, the device does not exceed the maximum power, and NI-DCPower returns an error.
Manual 1060

The device attempts to source, on each active channel, the power you request with the Requested Power Allocation property; NI-DCPower performs a sourcing power check. If the requested power is either less than the required power for the present source configuration or greater than the maximum sourcing power, the device does not exceed the requested or allowed power, respectively, and NI-DCPower returns an error.