Radial Engineering USB-Pro Bedienungsanleitung


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www.radialeng.com
True to the Music
®
User Guide
USB-PRO
USB Direct Box
â„¢
Radial Engineering Ltd.
1845 Kingsway Ave., Port Coquitlam, BC V3C 1S9, Canada
tel: 604-942-1001 • fax: 604-942-1010
info@radialeng.com
Radial USB-PRO
USB to Audio Direct Box
â„¢
®
Table of Contents Page
Overview 1 .........................................................................
Features 2 ...........................................................................
Getting started and audio connections 3 ............................
Testing and Using 4 ............................................................
Eliminating hum and buzz 4 ................................................
Using the headphone output 5 ............................................
Speciîš¿cations ..................................................................5
Radial Limited Warranty Back Cover ...................................
INTRODUCTION
Congratulations on your purchase of the Radial USB-Pro!
The Radial USB-Pro is a high-resolution stereo direct box
designed to convert sound îš¿les from a laptop computer
and seamlessly transfer them to a pair of balanced audio
outputs to feed a PA, recording or broadcast mixing
console.
Plug and play easy to use, the USB-Pro can be up and
running in no time. That said, as with any new product, we
recommend that you take a little time to read through the
manual in order to familiarize yourself with the USB-Pro
features so you can get the most out of it.
If you have any questions that are not covered in this
manual, please consult the FAQ section on the web site
as this is where we post the latest updates and questions
from other users. If you still can’t nd what you are looking
for, feel free to send us a note at info@radialeng.com and
we will do our very best to reply in short order.
Radial Engineering Ltd. USB-Proâ„¢
True to the Music
®
1
OVERVIEW
The Radial USB-Pro is a plug and play, 24bit digital to analog audio
converter and professional direct box in a compact and road rugged
package.
A typical direct box is a device that lets you interface a high impedance
(hi-Z) audio output with professional low impedance (low-Z) PA and
recording systems. In the case of the USB-Pro, the digital audio signal
is controverted to analog and feeds directly into the direct box circuit
to produce low-Z balanced left and right stereo signals. The built in
preamp allows you to adjust the output level from mic-level to line-level
and enables the USB-Pro to connect directly to mixing consoles, power
ampliîš¿ers and self-powered speakers alike. The USB-Pro ensures the
digital signal is delivered to the PA as faithfully as possible.
LEFT
CHANNEL
RIGHT
CHANNEL
MAC or PC PA SYSTEMUSB-Pro
DIGITAL USB
INPUT
The USB-Pro is very easy to setup and use because it derives power
from the USB connection and automatically conîš¿gures the sampling rate
and bit depth without the need for special drivers. The USB-Pro can be
used for audio playback, system testing and for transferring digital audio
îš¿les to analog for processing.
Following the block diagram below, a computer’s USB digital audio output
is converted to analog audio. A level control allows you to adjust the output
level and a mono sum switch can be activated to send mono signals to
two separate audio systems or check for phase issues. The 3.5mm mini-
headphone output can be used to monitor the stereo signal. Before the
XLR output, isolation transformers may be switched into the circuit to
eliminate noise caused by ground loops. The signal is then balanced to
drive long cables without inducing noise.
DIGITAL TO
ANALOG
USB
INPUT
LAPTOP
RADIAL USB-Pro
HEADPHONE
AMP
HEADPHONE
3.5MM OUT
LEVEL
CONTROL
MIC TO LINE
STEREO /
MONO SUM
TRANSFORMER
ISOLATION
BALANCED
XLR OUT


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Marke: Radial Engineering
Kategorie: Nicht kategorisiert
Modell: USB-Pro

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