NEC MA Series 43" 4K Commercial Display with Media Player and Raspberry Pi Compute Module 4 SoC - Manual (Page 33)

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Connecting to audio equipment with ARC function
If connecting audio equipment with ARC function to HDMI1 (ARC) using the included ARC-supported HDMI cable, the audio
equipment outputs the monitor’s sound.
• The sound via HDMI1 (ARC) is not adjustable by the OSD menu.
• When the ARC function is activated, the monitor’s internal speakers are muted.
• The playing picture’s sound is output to audio equipment via HDMI1 (ARC). The HDMI1 (ARC) does not send an audio signal
that is not supported by the input connector of playing pictures. Please refer to “Specifications” for the supported signal of
each input connector.
HDMI-CEC (Consumer Electronics Control)
HDMI-CEC provides compatible media players, connected via HDMI, the ability to communicate and allow limited control
between the device and the monitor. For example, turning on a Blu-ray player can immediately switch input to the Blu-ray player
without using the remote control. Not all devices are fully compatible, and, in some cases, the media device manufacturer may
only provide compatibility with its own monitors or TVs. See
“HDMI-CEC Command” on page 30 .
When supported, the monitor’s remote control can be used to control the HDMI media device.
NOTEN: The instructions in this section guide you through configuring [CEC] in the monitor’s OSD menu. These settings can
also be configured using the monitor’s web controls. The function names and location in the web controls are the same
as the OSD menu.
Enabling CEC
1. Connect a CEC device to the HDMI port.
Press the HDMI button on the remote control .
2. Press the MENU button to open the OSD menu.
3. Navigate to [ADVANCED] then to [CEC].
4. Select [MODE1] or [MODE2] for [CEC].
5. Select SET under [SEARCH DEVICE].
When the search is complete, the HDMI port with a CEC connected device is shown with its name.
If no CEC device is found, make sure the device is plugged in, turned on, it supports CEC and CEC is enabled. Depending
on the manufacturer, the CEC feature may have a different name. Refer to the device’s product manual.
6. Press the EXIT button on the remote control.