The auxiliary port options are located in the device settings section of Nureva Console.
Audio jack cabling
As the signal and cable are single-ended, keeping the cabling length to a maximum of 6 feet ensures minimum noise is coupled to the signal. Avoid running noisy cables next to these audio cables so coupling does not occur. Installing the connected equipment next to the connect module will help make sure this happens.
Both 3.5 mm ports are unbalanced with a 3-contact pin-out configuration (tip, ring, sleeve).
The auxiliary in and auxiliary out connections are single-ended, unbalanced signals with default maximum output signals. The default signal is echo-canceled microphone pickup with a maximum output level of 0.92 Vrms
Any equipment requiring voltages below the default levels may result in clipping, distortion, and in extreme cases, damage to connected systems. Equipment requiring voltages above these levels will not be adequately driven by the HDL310 system's output signal and may result in quiet audio on the channel. In some cases, it may result in no audio. Before connecting to the Nureva connect module, make sure the third-party device voltage levels are adequate or adjusted properly by additional interfacing hardware.
HDL310 auxiliary ports
Aux out (mic level)
0.23 VRMS (0.65 Vp-p) max.*
Aux out (line level)
0.92 VRMS (2.60 Vp-p) max.*
1.00 VRMS (2.83 Vp-p) max.
* assumes a 10k Ohm load
Different auxiliary output modes can be selected in Nureva Console for interoperability with different audio devices.
Microphone out (mic level)
The output contains the in-room microphone pickup that is echo canceled (near-end or local audio). The mic level setting is generally used when connecting to a mixer, DSP, codec or recording device. Mic level would be selected to match the input requirements of the receiving device.
Microphone out (line level)
The output contains the in-room microphone pickup that is echo canceled (near-end or local audio). The line level setting is generally used when connecting to a mixer, DSP, codec or recording device. Line level would be selected to match the input requirements of the receiving device.
The output contains far-end audio for playback on external speakers through an amplifier. The output is a mono signal and the HDL310 speakers are disabled. Near-end audio to the computer and far-end audio from the computer is exchanged by the USB connection. The volume should be controlled by the computer for the best results, and the amplifier settings should be fixed.
The output contains both near-end and far-end audio mixed into one signal. With a mixed signal, hearing aid transmitters can transmit both the in-room audio and far end to hearing aid devices.
Speaker reference is a setting for the Auxiliary out port for the HDL310 system. This setting is for use with acoustic tracking cameras where a reference signal from the in-room speakers is required. Enabling Speaker reference mode allows acoustic tracking cameras to use the in-room reference signal to cancel out the audio from the speakers so the camera does not track to the speakers. Speaker reference mode is only available when using the Auxiliary out port for the HDL310.
To configure this setting, navigate to the device settings in Nureva Console, open the Auxiliary ports menu, and select Speaker reference. Nureva Console cloud users then click apply.
The auxiliary in port is used to add an audio source for playback to the room. The signals from the auxiliary in port will get mixed with any audio signals from a connected USB audio source. The auxiliary in port accepts a line level signal.