AVID HD I/O Word Clock Input Termination

[irispill]

Hello, does anyone know whether AVID HD i/o word clock input is 75 ohm terminated or not? I cannot find it anywhere in the manual or DUC. We are feeding it clock from our Lavry ADC and as per Lavry the end of the line should be terminated. We need to know if we should add the 75ohm plug or not. Thanks so much for any help!