<p>I agree with both Matt and Steven. The HXRMC2500 has a BNC output that is composite only. Therefore you would need an HDMI-SDI converter like the ones below:<br>
http://www.bhphotovideo.com/c/product/620830-REG/Blackmagic_Design_CONVMBHS_Mini_Converter_HDMI_to.html<br>
or<br>
http://thorbroadcast.com/sklep-207/produkt-244<br>
Then you can connect to those fiber extenders, which I have never used that brand. If you can't figure it out, their tech support should be able to help you, especially if you need another piece that they might make :-).</p>