Simulink, 2-FSK bitrate on real SDR

Hello,

I am trying to develop model of the real transceiver (at least part of functionality) for CC1200 chip.

Right now I am trying to check and compare TX parameters of the my model and real transceiver.

For the RX I use CC1200 Development Kit (http://www.ti.com/tool/CC1200DK#). For the transmitting I use my Simulink model and SDR bases on Zedboard and AD9364.

Transceiver and receiver use 2-FSK modulation, 100 kHz deviation and 100 kbps speed.

My main question is: how can I syncronize (how can I set up correctly) model settings for the getting data packet with these parameters from SDR Tx?

Because right now I have built correct preamble, sync word and data structure (payload and crc), but I cannot receive it. In my spectrum analyzer (it's real device, not Simulink) I see data on the correct central frequency. But deviation is wider then expect. Laso I think I have wrong bitrate. I have 3 places for the changing model's settings: solver's step in the "Model configuration parameters", Samples per symbol in the M-FSK block and Baseband sample rate in the "ZC706 and FMCOMMS2/3/4 Transmitter" block. But I can't figure out how to match them together to get the desired bit rate and deviation.

I would be very grateful if you help.