3
Operation
Front Panel Controls
GROUP
48V
DATA
(push)
PEAK
MODE
Figure 1. RCU front panel
The front panel controls and display of the RCU and the 801R preamplifier are identical
and consist of the following:
+48 Volt phantom power push-button
PHASE reverse push-button
GROUP push-button
PEAK Indicator Reset push-button
DATA Variable function rotary encoder with push-button
MODE select push-button
LCD display 64x240 pixels
Preamplifier Modes
Channel mode: This is the default power on mode. In Channel mode the rotary encoder
is used to select one of the eight visible channels for adjustment. When selected, the
settings for a channel can be adjusted with the +48, PHASE, or DATA controls. Pushing
the +48V or PHASE button toggles that function on or off on that channel. Pushing the
DATA control enters the Gain Adjust mode. While in Gain Adjust Mode the Gain
numeric display characters at the top of the screen are highlighted and the rotary
encoder adjusts the gain up or down in approximately 1.5dB steps. Pushing the DATA
control again exits the Gain Adjust mode and returns to the Channel select mode. You
will notice that changes can be made from the front panel of the preamplifier or at the
RCU and both units will always show updated data.
