Input Select - Grace m802 Owner's Manual

also assigns channel numbers to the preamplifier. For instance, ID 1 includes channels 1-8, ID 2 includes
channels 9-16 and so on to ID 8, which includes channels 57-64. Pushing the DATA knob once allows the
ID number field to change by rotating the DATA knob. Pushing the DATA knob again saves the setting.
When in MIDI control mode, the ID setting determines which MIDI channel the preamplifier is assigned
to.
Note: It is very important that all preamplifiers in a multiple preamplifier system have unique ID num-
bers. However, the ID numbers do not need to be contiguous. For example, you could have one preampli-
fier set to ID1 and another set to ID3. The result would be that in channel mode the RCU would page from
channels 1-8 to channels 17-24. In meter mode (see page 18) you would see small dots over channels 1-8
and 17-24.
Peak Hold:
This field sets the behavior of the bar graph meters. Selecting "off" turns off the peak hold
function. Selecting "dcy" sets the bar graph meters to hold the highest peak level for 3 seconds. Select-
ing "hld" stets the meters to hold the highest peak setting until the PEAK button is pressed. The Peak
hold settings can be adjusted by pushing the DATA knob once and then turning the DATA knob until the
desired function is visible. Pushing the DATA knob again saves the setting.
Display contrast:
angles. The Display contrast settings can be adjusted by pushing the DATA knob once and then turning
the DATA knob until the desired contrast is achieved. Pushing the DATA knob again saves the setting.
Back light control:

Input select:

Rbbn
The input select page of the setup menu is used to configure the input routing and configuration for
each channel. The available options depend on the preamp's hardware configuration. Turning the DATA
knob selects a channel and pushing the DATA knob toggles the selected channel between the two
input options. Note that when a channel's setting is changed, the mic power on that channel will be
turned off and must be turned on from the channel mode screen.
For the standard microphone preamp channel, the available options are 48V and Rbbn. Both of these
modes use the 3 pin XLR microphone input and function identically except for the following features
when ribbon mode is active:
1) The gain is increased by 10dB, effectively shifting the available gain range from -7.1dB – 63.0dB to 2.9dB
– 73.0dB. This new gain is reflected on the user interface. "Rbbn" is also displayed on the corresponding
channel's status column.
2) +48V Phantom Power is disabled and locked-out.
3) The phantom power decoupling caps are bypassed, direct coupling the microphone to the preamp and
minimizing components in the signal path. NOTE: This bypass function engages only after the decoupling
caps have discharged to a low voltage level. Thus if phantom power was previously on, the bypassing will not
be instantaneous. It should also be noted that no ribbon microphone should be connected until these caps have
completely discharged.
grace design m802
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owner's manual
The display contrast can be adjusted to optimize the display for various viewing
The LCD display back light illumination can be turned off if desired.
48v