18Connectionsp Installation precautions for the IR system cablepp Place the HD Visual Communication Unit behind the doors of a system rack, for example, to ensure that the signals of theremote controller will not be received directly. If these signals are received directly, they will interfere with the signals of the IRsystem cable, and the operations concerned will not be performed properly.pp Turn on the power of the camera if remote control operations using the IR repeater function are to be performed. If thecamera’s power is not on, it will not be possible to perform remote control operations using the IR repeater function.p Checking the operations performed when the IR system cable isinstalledStep 1With the IR system cable not connected to the camera, perform one or more remote control operations, and check that theHD Visual Communication Unit does not operate in response. (Check that the signals of the remote controller are not beingreceived directly.) If the HD Visual Communication Unit does operate, select another installation location.This unit Leave this end of the cabledisconnected. pp The figure does not show the HDMI cable.HD Visual Communication UnitHD Visual Communication Unit operationsCamera operationsCheck that the signals are notreceived directly.IR system cableStep 2With the IR system cable now connected to the camera, perform one or more remote control operations, and check that the HDVisual Communication Unit operates properly in response.This unitConnect this end of the cable. pp The figure does not show the HDMI cable.HD Visual Communication UnitHD Visual Communication Unit operationsCamera operationsCheck that operationscan be performed.IR system cable