User Manual

5
2 Hookup
2.2 Back Panel Connections
Quantum-series
Owner’s Manual
• Red. Quantum is either not synced to your computer or its external clock source
is not present.
• Flashing purple. The identify button is active in UC Surface.
Power User Tip: Word clock is the timing signal with which digital devices sync frame
rates. Proper word clock sync prevents digital devices from having pops, clicks, and
distortion in the audio signal due to mismatched digital audio transmission. In
general, you will use your Quantum-series interface as the master clock in your
studio; it provides high-quality word clock for this purpose. However, if you would
like to use another device as the master clock, you can set the input source for
clocking in UC Surface. See Section 4.1 for details.
2.2 Back Panel Connections
Rear-panel Mic Inputs. As previously mentioned in Section 2.1, additional
microphone preamps are available on the rear of your Quantum interface.
Line Inputs. The ¼-inch TRS connectors on Channels 3-8/4 are for use with line-level
devices. These inputs are scaled to accept line-level signals up to +18 dBFS.
Power User Tip: When these inputs are engaged, the microphone preamp circuit is
bypassed completely, and no trim control is available. Typical examples of line-level
connections are synthesizer outputs, signal processors, and stand-alone mic preamps
and channel strips. Use the output level control on your line-level device to adjust its level.
Line Outputs. Quantum-series interfaces have 8/4 line balanced line outputs to
route to external devices, such as headphone amps, signal processors, and additional
monitors. Each output has an independent playback streams. Every line output is DC
coupled to provide control voltage to external analog equipment. This feature can be
used with any plug-in that supports it.
Power User Tip: The Main Level knob on the front of your Quantum-series interface can
be used to control any or all of these outputs. This is set from UC Surface. See Section 4.3
for more information.
Main Outs (Quantum). These are the main outputs for Quantum. The output level of
the Main Outputs is controlled by the Main level control on the front of the unit. Like
the eight line outputs, the main outputs have independent playback streams
(playback streams 1-2). Both Main Outputs are DC coupled to provide control voltage
to external analog equipment. This feature can be used with any pug-in that
supports it.