IviACPwrVoltageRamp Behavior Model
The IviACPwrVoltageRamp extension group follows the behavior model of the IviACPwrBase capability group. The only modification to the behavior model from the IviACPwrBase capability group is the ability to ramp the output voltage.
When the IviACPwr Ramp Voltage [VR] VI returns immediately after the ramp has started, you should only call the IviACPwr Query Voltage Ramp Busy [VR] or IviACPwr Abort Voltage Ramp [VR] VIs, or read the IviACPwr Voltage Ramp Busy [VR] property while the ramp is in progress. Calling any other VI or reading or writing any other property might abort the ramp or cause other vendor-specific instrument behavior. After the voltage ramp completes or is aborted, the driver must invalidate the IviACPwr Voltage Level property in the IviACPwrBase capability group.
The actual voltage that appears at the power source output during a voltage ramp assumes the power source is operating in constant voltage mode. In other words, the output current during the voltage ramp is below the value in the IviACPwrBase capability group. If the power source operates in constant current mode during any portion of the ramp, the actual output voltage is reduced to maintain the current limit value but the actual ramp duration is not affected.