HW: NI USRP 2974R
SW: Labview 2022 64bit FPGA
 
Problem: 
I want to generate 2 tones:  one of 1kHz  and the second 2.5kHz, using a carrier frequency of 200MHz with a frequency deviation (FM) of 50kHz.
 
In the FPGA, I set the multitone using the frequency shift, I don't have any problem with this. 
 
Question:
How to implement the FM with a frequency deviation in the FPGA code?