Tandberg Data 3000MXP - Manual (Page 85)

4 Administrator Settings
81
Mix Mode
Auto
The adjustment of each microphone signal is done automatically to obtain the
best possible audio and minimize the background noise.
Fixed
Fixed will maintain a constant weighting of all microphones.
VCR Ducking
If VCR Ducking is activated, the VCR audio level will be attenuated if someone talks into the
microphone or at the far end.
Level Settings
It is possible to adjust the audio input levels according to which external audio equipment is
connected. The on-screen audio level indicator will make it easier to set the correct input level
settings. The input level should be adjusted so that the average level reaches the preferred
level marker. The audio inputs are adjustable in steps of 1.5 dB from 0 dB to 22.5 dB.
The default levels for Mic 1 and 2 are set for use with an Audio Technica AT871R or AT841R
microphone in an average videoconferencing room. The gain can be adjusted correctly for a
wide range of microphones.
A few examples of microphone levels are:
Audio Technica
AT871R
+3dB (default)
Audio Technica
AT851R +7dB
TANDBERG Audio
Science +19.5dB
Audio inputs 4 and 5 are set to a default level which is adhered to by most manufacturers
of audio-visual equipment and is a level at which most audio-visual equipment (CD-players,
VCRs or DVDs) will work.
4.5.2 Outputs
Audio out 1 - 2
Audio out 1 is intended for connection to televisions or audio amplifiers.
Audio out 2 is intended for connection to a VCR or other recording equipment. The signal is a
mix of audio from far end and local end (not from Audio in 4).
Note that audio out 2 never should be connected to a loudspeaker placed in the same room
as the microphones connected to the system. This will cause
“
howling
”
and possible damage
to the speaker system. If an output is Off, no audio will be sent to that output.
Out 1 Mode