INTRODUCTION The HDMI to SDI Converter allows HDMI signals to be shown SDI display while ensuring high bit rates of 2.970 gibt/s to give you high resolution signal without any loss.for professional this means that it is now easier to convert your high def HDMI signal with audio to sdi for long distance transmission and display your work on SDI display. OPERATION CONTROLS AND FUCTIONS SDI-OUT: This slot is where you connect the SDI display with coaxial cable. POWER LED: this red led illuminate when the device is connected with power supplay. DC IN: plug the 5V-12V DC power supplay into the unit. HDMI IN: this slot is where you connect the HDMI source with HDMI cable.