I can capture the IQ data from the signal generator but I am unfamiliar on how to use the data to demodulate a signal. The information I would like to get is as follows:
1) Digital data - baud rate and bits
2) Analog data - audio stream or tones.
The answer will depend on the signal such as
Modulation type (analog, digital. FM, AM, PSK, FSK, etc.)
you have to know how many bits per symbol
there are often bits for special purpose (guard, start, stop bits)
Do you have the software RFmx Demod installed, or the Modulation Toolkit?
There are many example of demodulation.
Some are software only, were the sw first modulates a signal (IQ data produced) and then demodulates the signal, retrieving the baseband (i.e. analog).
I recommend you look at this examples first.