Here is some info on the NI PCI-5640R. All the following information is installed with the NI PCI-5640R installer.
The NI PCI-5640R's Help file, Getting Started Guide and Specifications are the attatched documents.
In addition, more specific details on the module's operation and capabilities can be found in the module’s component data sheets. The following are the major components of the module:
AD6654 - 14-Bit, 92.16 MSPS, 4 & 6-Channel Wideband IF to Base Band Receiver
Analog Device Information page: