D14129.02—NOVEMBER 2008 20
Codec C90 Administrator Guide
Contents Introduction Getting started About the menus About the settings Settings Library Cameras Appendices Contact us
The settings library
Audio Volume: <0..100>
Sets the volume level [0-100] on the loud speaker output in steps of 0.5dB f rom -34.5dB to 15dB. Volume 0
= Off.
The volume level bar which is disp layed on screen, when usin g the remote control, goes from 0 to 20.
Range: The volume level goes f rom 0 to 100
Volum level equals Audio gain value
0 equals 0
1 equals -34.5 dB
70 equals 0.0 dB
100 equals 15.0 dB
Example: Audio Volume: 70
Audio Input Microphone [1..8] Type: <M icrophone/Lin e>
The microphone inputs are inten ded for electret type mic rophones. The microph one inputs are balanced
with 48 V phantom power. The microphone inp ut can be set to line or micropho ne mode. Addresses the
specific microphone.
Microphone: Phantom voltage a nd pre-amplification is O n
Line: Select Line when you hav e a standard balanced lin e input. The phantom voltage an d pre-amplification
is Off.
Example: Audio Input Microphone 1 Type: Line
Audio Input Microphone [1..8] Mode : <On/Off>
By default, all inputs are enable d. Just plug in an audio source a nd it is active. Audio inputs th at are On
will automatically be mixed. Unco nnected inputs will autom atically be muted. Address es the specific
microphone.
On: Turns the microphone On.
Off: Connected but unuse d inputs should be set to Off to p revent audio/noise fro m the inputs.
Example: Audio Input Microphone 1 Mode: On
Description of the administrator settings
In the following pages you will find a co mplete list of the administrato r settings. The examples
shows either the default value or a n example of a value.
We recommend you visit the TANDBERG web site re gularly for updated vers ions of the manual.
Go to: http://www.tandberg.com/docs
Audio Input Microphone [1..8] Level : <0..18>
Defines the input level of each mic rophone in steps of 1dB from 0dB to 18 dB. Address es the specific
microphone.
Please see the Audio Level tabel s in the Codec C90 System Integ rators Guide for a complete over view of
the menu values represented in dB .
Range: 0 to 18 dB
Example: Audio Input Microphone 1 Level: 14
Audio Input Microphone [1..8] EchoCo ntrol Mode: <On/ Off>
The echo canceller continu ously adjusts itself to the au dio characteristics of th e room and compensate for
any changes it detects in the audio e nvironment. If the change s in the audio conditions are ve ry significant
the echo canceller may take a sec ond or two to re-adjust. Addres ses the specific microph one.
On: Echo Control is normally se t to On to prevent the far end from hear ing their own audio. Once se lected,
echo cancellation is active at a ll times.
Off: Echo Control should be sw itched Off if external e cho cancellation or pl ayback equipment is used.
Example: Audio Input Microphone 1 EchoControl Mode: On
Audio Input Microphone [1..8] EchoCo ntrol NoiseReduction: < On/Off>
The system has a built-in noise reduct ion which reduces const ant background noise (e.g. noi se from air-
conditioning systems, coolin g fans etc.). In addition, a high pa ss filter (Humfilter) redu ces very low frequenc y
noise. Requires the Echo Control M ode to be enabled for the spec ified microphone. Addres ses the specific
microphone.
On: The Noice Reduction sho uld be set to On in the presence of l ow frequency noise.
Off: Turns Noise Reduction Of f for the specified microph one input.
Example: Audio Input Microphone 1 EchoControl NoiseReduction: On
Audio Input HDMI [3, 4] Mode : <On/Off>
Determines whether or not the aud io channel on the HDMI inpu t should be active. The HDMI 3 a nd HDMI 4
has audio channels. Address es the specific Audio HDMI i nput.
On: Set to On to enable the audio chan nel on the HDMI input 3 or 4.
Off: Set to On to disable the audio ch annel on the HDMI input.
Example: Audio Input HDMI 3 Mode: On
Audio Input Line [1..4] Mode: <On /Off>
Determines whether or not an Audi o Line input is active. Addres ses the specific Audio Li ne input.
On: Set to On to enable the Audio Line in put.
Off: Set to Off to disable the Aud io Line input.
Example: Audio Input Line 1 Mode: On

The Audio settings

Note: The description of the Adminis trator settings are prelimi nary, and subject to change.