3G/HD/SD-SDI transceiver fiber optical 1.Up to 20km fiber distance 2.Mini size pocketable/module/19" 3RU rack style ... of LED status, SD/HD indicator, CDR lock, optical link, power supplyEnclosure box material is made of aluminum, elegant appearance, light ... dual AC/DC power supply, particularly suitable for large volume optical transmission platform construction);2) Module style(1- channel);3) ...