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Health Care System IIIAdvanced Use
Audio Settings
Audio Inputs
By default, all inputs are enabled. Just plug in an audio source and it is active. Audio inputs that are On will
automatically be mixed. Select Off to prevent audio/noise from unused inputs or if you want to disable a
specific input. The activated audio sources are stored on presets.
Mic 1,2 and 3 are intended for electret type microphones. The microphone inputs are balanced with 24V
phantom power.
Audio input 4 is intended for connection to an external microphone amplifier or an external fixed mixer.
EXTERNAL MIXER
WHEN USING AN EXTERNAL MIXER, IT IS VERY IMPORTANT THAT THIS IS A FIXED MIXER. AUTOMATIC, SMART AND OTHER TYPES OF
ADAPTIVE MIXERS MIGHT CAUSE THE ECHO CANCELLER TO MALFUNCTION.
Audio input 5 is intended for connection to external playback devices or to telephone add-on hybrids.
As there is no acoustic echo canceller on this input it should not be connected to any microphones. The audio
entering this input will be heard from the local speaker.
Audio input 6 is intended for connection to a VCR. It can also be connected to other external playback
devices. As there is no acoustic echo canceller on this input it should not be connected to any microphones.
The audio entering this input will be heard from the local speaker.
Mix Mode
‘Auto’ automatically adjusts the weighting of each microphone to obtain the best possible audio and
minimizes the background noise. ‘Auto’ will also attenuate the VCR audio when someone talks into a
microphone. ‘Fixed’ will maintain a constant weighting of all microphones.
NOTE