Quad HDMI Recor cannot capture the HDMI signal

Hi:
DeckLink Quad HDMI Recorder can't detect hdmi signal(1080i59.94) decoded by the Cisco box(D9865-H). Why is it
DeckLink Quad HDMI Recorder can't detect hdmi signal(1080i59.94) decoded by the Cisco box(D9865-H). Why is it