User's Manual

MTB40S User Manual
8
<TUNING> menu
This menu can be entered by pushing .
In this menu channel/group and frequencies can be setup.
The name of the group is shown on the top right of the display.
SYNC group is a quick self-settable channel synchronized by
receiver (with SYNC group, on the top right of the display is
shown the name of the synchronized receiver).
Use the selector ( ) to change values and <SEL> to confirm.
Using quick channel setup buttons (<CH>), it is possible to enter
quickly in the tuning menu. Note that the menu has a different
layout (see the side image)
<AUDIO> menu
In the AUDIO menu are shown all the audio parameters (this menu can be entered by pushing ).
The sensitivity of the audio input is settable between “AF Gain”
(measured in dB) or “AF Level” (measured in dBu).
To help proper audio gain setting, an audio bar is supplied (with
maximum peak indicator) indicating the headroom to audio
peak (0 dB , nominal deviation 40KHz). Set the gain, with the
maximum input signal, avoiding the peak on the audio bar.
TRY TO SETUP TO HAVE A MAX PEAK HOLD BAR CLOSE TO -6dB.
Using quick gain setup buttons (<GAIN>), it is possible to enter
quickly in the audio gain menu. Note that the menu has a
different layout (see the side image)
The second <AUDIO> menu allows to set:
- audio phase (0° or 180°)
- High Pass Filter: applies different audio HP filter: Flat/ 60Hz/
80Hz/ 120Hz/ 170Hz/ 250Hz/ 400Hz.
The third <AUDIO> menu allows to set the noise reduction and
setup the limiter:
- MTB40S supports 2 different type of “Companding systems”:
ENR-Wisy: designed for maximum noise reduction;
ENC-Wisy: designed for maximum audio fidelity (use this in
case of special vocal application or to remote
instruments).
- Limiter: if is set “On”, an input audio signal above the peak
threshold (up to 30 dB above peak) is not cut but attenuate,
without lost quality. The limiter acts as a variable attenuator
(thanks to the feedback system), maintaining a distortion
<3%. When the limiter intervenes, the front led turns blue.
If this parameter is set “Off”, the limiter is disable.