TANDBERG T2000 MXP user manual Inputs, Mic 1- 2 and Audio input, Mix Mode, Fixed, VCR Ducking

Administrator Settings

4.5.1Inputs

Mic 1- 2 and Audio input 3-4

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. Unconnected inputs will automatically be muted. Select Off to prevent audio/noise from connected but unused inputs. The activated audio sources are stored on camera presets.

Mic 1 and 2 are intended for electret type microphones. The microphone inputs are balanced with 24V phantom power.

Audio inputs 3-4 (VCR Left/Right) are intended for connection to a VCR, DVD player or PC audio output. They can also be connected to other external playback devices. As there is no acoustic echo canceller on these inputs they should not be connected to any microphones. The audio entering these inputs will be heard from the local speaker as well.

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.

The VCR ducking is only valid for audio input 4. If input 3 and 4 is configured to one stereo input pair, see Stereo Settings, then the VCR ducking will apply to both input 3 and 4.

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

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