I just received the Marshall V-R70P-HDA. Found that the cable RGB that came with XH-A1 is a different connector. Marshall has the BNC type.
Looking for suggestions on converter cable or pin converters.

Thanks

Go to your local Radio Shack (or equivalent) and get 3 RCA->BNC adapters.

Here are the ones I use: http://www.radioshack.com/sm-radioshack-gold-series-rca-to-bnc-adapter--pi-2102688.html

You can get non-gold versions for much cheaper.

Thanks Steven. Appreciate your timely help.
Here are my handheld rig photos, XH-A1, LEX with Canon FD lens on Redrock Micro handheld.

How do you focus the lens with that setup?