How to set the coupling (AC or DC) of a PXI spectrum analyzer?

[Ray.R]

I have a client that asked me the following question.

At this time (today is a holiday in Canada), I do not have additional information as for which PXI module is used.

I suspect that it is one of the PXI-5660 series (5665 maybe?).

Does anyone have experience with this module?  And how to set the AC / DC coupling?

Thanks

[Ray.R]

Found it.

For LabVIEW versions 8.2 and older, it is through a standard dll call. 

Newer versions have the option available through a property node.