User Manual

Controls and Functions
Owner’s Manual
9
Controls and Functions
Front Panel
1 [INPUT] Connectors 1–32 {1–16}
These are the XLR-3-31 type analog balanced
connectors for the input channels. The input level
range is from –62 dBu to +10 dBu. +48V phantom
power can be supplied to devices that require it via the
input connectors.
NOTE
The PAD will be switched on or off internally when the gain
of the internal head amp is adjusted between +17 dB and
+18 dB. Keep in mind that noise may be generated if there
is a difference between the Hot and Cold impedance of the
external device connected to the INPUT connector when
using phantom power.
2 [+48V] Indicators
These indicators light when +48V phantom power is
turned ON for the corresponding input channels.
Phantom power supply switching can be carried out
from a compatible digital mixing console or computer
application. No phantom power will be supplied,
however, if the [+48V MASTER] switch is OFF, even
if phantom power to individual channels is turned ON
(the +48V indicators will flash). The +48V indicators
also function as error indicators: the indicators for all
channels will flash if an error occurs.
CAUTIONS:
• Make sure that phantom power is turned OFF unless it is
needed.
• When turning phantom power ON, make sure that no
equipment other than phantom-powered devices such as
condenser microphones are connected to the
corresponding [INPUT] connectors. Applying phantom
power to a device that does not require phantom power can
damage the connected device.
• Do not connect or disconnect a device to an INPUT while
phantom power is applied. Doing so can damage the
connected device and/or the unit itself.
• To prevent possible damage to speakers, make sure that
power amplifiers and/or powered speakers are turned OFF
when switching phantom power ON or OFF. We also
recommend setting all digital mixing console output
controls to minimum when turning phantom power ON or
OFF. Sudden high level peaks caused by the switching
operation can damage equipment as well as the hearing of
those present.
3 [SIG] (Signal) Indicators
These indicators light green when the signal applied
to the corresponding channel reaches or exceeds
–34 dBFS.
The SIG indicators also function as error indicators:
the indicators for all channels will flash if an error
occurs.
4 [PEAK] Indicators
These indicators light red when the signal level of the
corresponding channel reaches or exceeds –3 dBFS.
The PEAK indicators also function as error
indicators: the indicators for all channels will flash if
an error occurs.
5 [UNIT ID] Rotary Switch
This rotary switch enables you to set an ID number so
that connected devices will recognize the Rio. The
UNIT ID must be a unique number in the network so
that the Rio will be able to transmit and receive audio
signals over a Dante network, or be controlled from a
connected digital mixing console.
Use the rotary switch while the power to the unit is
turned OFF. Otherwise, the ID setting will not be
effective.
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1
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1 3 45
6
9 A078
B
C
3
2