Is the PXI-4498 capable of sampling a waveform from a pure voltage source if the IEPE power is turned off for that channel? For example, if a waveform is output by a cd player, can the PXI-4498 sample this data as long as the voltage does not go over the voltage range set by the card? If this is possible, are there any other setup options required besides turning off the IEPE power to that channel?