How long does it take deployment pay to kick in?

My husband left on the 30th of May for Afghanistan. We've already received one paycheck today and obviously we weren't expecting it to be any different than usual. I'm just wondering if that will change on the 15th? I know it will take 30days for FAMILY SEPERATION pay but just curious about the tax free/hazardous duty, etc. All of the necessary paperwork has been completed for finance by his chain of command. I will have him check his LES when I speak with him but for now I'm just trying to get an idea.