Grace m108, Руководство пользователя

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5.7 Activating Phase Reverse
To reverse the signal polarity on a preamp channel, use the EDIT knob to select the channel and press
the Ø panel switch to the left of the screen. Phase reverse will be indicated by the Ø icon in the middle of
the channel column. pressing the Ø panel switch again with the channel selected will deactivate phase
reversal.
5.8 Ribbon Mic Mode
To activate Ribbon Mic Mode on a preamp channel, use the EDIT knob to select the channel and press
and hold the Ø panel switch to the left of the screen. Ribbon mic mode will be indicated by the 'R' icon
in the middle of the channel column. Ribbon Mic Mode prevents 48V phantom power from being inad-
vertently applied to a mic input to which a ribbon microphone is connected.
5.9 Peak Clear
The m108 signal meters will display a small line to indicate the highest level (peak) a particular channel
has achieved. There are 3 modes for displaying these peaks which can be selected in the setup menu
(chapter 7) 'off, decay, and hold'. If either the decay or hold settings are chosen, then the peak indicator
will remain lit until it is manually cleared with this switch or automatically after a period of time (decay).
As well as signal peaks, the signal level meter will display a bright square next to the gain level number
to indicate an OVER at the ADC. If this is shown, a level adjustment should be made. OVER indicators will
remain on until cleared with the peak clear switch.
5.10 Channel Group Mode
The Group mode allows between 2 to 8 adjacent mic preamp channels to be grouped together for gain
change operations. To enter group mode, press the GROUP switch. Any defined channel groups will ap-
pear without vertical dividing lines.
To define a group, place the cursor on the left most channel of the channels to be grouped and turn the
EDIT knob clockwise while pressing and holding the GROUP switch. You will notice that the vertical di-
viding lines between channels disappear as channels are added to a group.
Once in Group mode, gain changes are made in the same manner as in normal Channel select mode. To
remove a group, place the cursor on the right most channel of the channels in the group and turn the
EDIT knob counter clockwise while pressing and holding the GROUP switch. You will notice that the ver-
tical dividing lines between channels reappear as channels are removed from a group.
Groups are limited to adjacent channels only and groups cannot span between preamplifier units. Also,
only gain can be adjusted when in Group mode. To toggle the status of Phantom power or Phase on a
channel, you must exit Group mode.
m108 Owner's Manual page 14