MATLAB example for NI PCI-6221 and BNC-2110 boards

Hi, all!

I have two boards from National Instruments: PCI-6221 and BNC-2110. Using this equipments I need to read the analog voltage data and write analog voltage to the BNC-2110 board's pins in MATLAB. Please, tell me where are tutorials how to initialize the device, write and read the analog signals in pins. How can I know voltage range (and limits) and discretization for this board.

Thank you!