Need Advice RE: FS700, Atomos Shogun and 50i output

Hey folks

So I recently acquired a Sony FS700 for slow motion usage in my broadcast, using an Atomos Shogun inferno to capture the 200fps RAW feed out of the camera. My issue from here is getting it to feed the playback from my Atomos as a 50i stream to use for broadcast. For some reason the Atomos will not ouput anything other than 1080p200.

Would love some suggestions on what I could do to make this work for my needs? I cannot unfortunately have a dedicated operator to trigger the record in camera and playback.