Increasing range Highspeed AD/DA Card

Hello,

sorry for the long delay how ever let me explain:

-We would like to increase resolution and thererfore decrease the range> (also wrongly mentioned in first post i'm sorry for that)

-in the data sheet ( http://www.analog.com/media/en/technical-documentation/data-sheets/ad9248.pdf )

--- Quote Start ---

The input range can be adjusted by varying the

reference voltage applied to the AD9248, using either the

internal reference with different external resistor configurations

or an externally applied reference voltage

--- Quote End ---

Now my questions is can we vary this reference voltage in a proper way in the Highspeed AD/DA Card hsmc model?

Best regards,

Bert.