I found a possible alternative in the SCXI-1120D, that is a wide band isolation amplifier
with a lowpass filter at 22.5 kHz. Combined with the SCXI-1327 high-voltage attenuator
terminal block, the input range is extended to +-250 V. This module gives only 8 channels.
If you like to have a clarifying and more detalied chat, you can contact directly our commercial
technicians at NI Italy (see http://www.ni.com/italy).
NI - Italy