Roland Rubix22 2x2 USB Audio Interface - Manual (Page 3)

3
Panel Descriptions
Rear Panel
1 7 2 5 3 4 6
1 5V DC connector
Connect this to a commercially available USB AC adaptor.
About the USB AC adaptor
Read the section on “Using the Unit Safely” in the manual
included with your USB AC adaptor. Use a USB AC adaptor
that meets the following specifications.
5 USB micro-B type
5 Output voltage: 4.8–5.2 V
5 Output current: 500 mA (0.5A) or higher
We have verified that the Rubix operates with typical USB
AC adaptors that meet the above conditions, but cannot
guarantee that it will work with all adaptors that meet these
conditions.
Be aware that even under identical conditions, differences
in the design specifications of a USB AC adaptor and
differences in the conditions of use might make the Rubix
operate or perform differently.
2 [POWER SOURCE] switch
Selects the connector from which power is obtained.
Switch
position
Connector from which power is obtained
5V DC connector (A commercially available USB
adaptor is required.)
USB port (Power is supplied from the connected
computer.)
3 USB port ( )
Connects to the computer.
4 MIDI (OUT, IN) connectors
Connect the MIDI OUT connector to an external MIDI sound
module, etc.
Connect the MIDI IN connector to a MIDI keyboard or MIDI
controller.
5 [DIRECT MONITOR] switch
Determines whether the audio signals input via the INPUT (1L, 2R)
are output directly.
Switch
position
Explanation
MONO Monitor in mono.
STEREO Monitor in stereo.
OFF
Select when monitoring using the DAW
software. Only audio input via the Rubix22’s USB
port can be monitored.
MEMO
5 When a guitar or microphone is connected to the INPUT 1L
jack and nothing is connected to the INPUT 2R jack, set to
“MONO.”
5 Even when set to “MONO,” a stereo audio signal is output
from the Rubix22’s USB port.
6 [GROUND LIFT] switch
OUTPUT (1L, 2R) jacks
(balanced TRS type)
NOR
LIFT
Normally, this switch should
be set to “NOR” (NORMAL).
If ground loop noise occurs,
switching this to “LIFT”
might eliminate the noise.
MEMO
5 The GND (SLEEVE) of the OUTPUT (1L, 2R) jacks (TRS
balanced type) is disconnected from ground.
5 In some cases, there might be no sound if you connect a
balanced cable to an unbalanced device and set this switch
to the “LIFT” position. If so, set the switch to “NOR.”
7 OUTPUT (1L, 2R) jacks (balanced TRS type)
Output the analog audio signal.
MEMO
5 Pin assignment of OUTPUT jack
GND (SLEEVE)
HOT (TIP)
COLD (RING)
5 The wiring of this device uses “impedance balancing.” The
audio signal is conveyed via HOT and GND in unbalanced
form, but since COLD and GND are connected by a resistor,
the electrical circuit is balanced. This provides the same
noise-reducing effect as a balanced circuit.