TANDBERG D50104-15 用户手册

64

Health Care System III

Advanced Use

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.

E

XTERNAL

 

MIXER

W

HEN

 

USING

 

AN

 

EXTERNAL

 

MIXER

, 

IT

 

IS

 

VERY

 

IMPORTANT

 

THAT

 

THIS

 

IS

 

A

 

FIXED

 

MIXER

. A

UTOMATIC

, 

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.

‘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.