Operating Instructions and Installation Instructions
AD Holdings ©2011
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TransVu Express
Audio
The Audio menu allows settings for the bi-directional audio channels to be edited. Audio can be
recorded from line input. Challenge audio i.e.originating from an Operator using NetVu ObserVer at
a Remote Video Receiving Centre (RVRC) can be recorded. This combined audio is then available
on Audio Output 1.
Audio Recording Select ‘Enable’ to activate Audio recording.
Record Audio Challenge Select this option to record an audio challenge originating from an
operator at an RVRC.
Use Select the intended use of the incoming audio i.e. ‘Local Playback’, or
‘Challenge’. Select ‘Disabled’ to deactivate.
Record Gain This option allows the Record Gain level to be set. This is the base
setting from which the AGC (Automatic Gain Control) will operate.
Select from 1 to 15. The default and recommended setting is 15.
Playback Volume Select a volume setting between 1 to 64 for audio playback.
Record AGC Select this option to activate the Automatic Gain Control (AGC)
function. AGC amplies audio until a recordable (usable) signal is
produced. Please note that this may result in increased background
noise/distortion.
Record uncompressed Select this option to record audio in an uncompressed format.
Note: Recording in uncompressed format will signicantly increase the disk space used.
Mic Bias Enabled Enables the Audio input to receive MIC input.
Mic Boost Increases gain on Audio channel to boost MIC signal.