camerAsh

I am near positive that those cameras have a BNC connector that is only composite out, so I do not think that the camera itself actually has SDI capabilities. This means you will need to get an HDMI to SDI converter (something like this) first before you connect to the extenders. In terms of the extenders you mentioned, I do not have experience with that specific brand, but using the converter, they should work. If you run into trouble, you should be able to call their tech support. Personally, I have worked with both Telecast Rattlers and Thor Fiber products, both of which worked perfectly.