M-Audio USB User Manual

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

What’s in the Box? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Transit USB Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Transit USB Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Windows XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Windows 2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Windows ME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Windows 98SE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

MacOS 9.2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Mac OSX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Tr ansit USB Audio Connnections . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Input Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Transit USB’s Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Latency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Transit USB and the Windows Media Drivers . . . . . . . . . . . . . . . . . .24

WDM/MME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

ASIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Transit USB and Macintosh Audio . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Mac OS 9.2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Mac OS X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

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Technical Features:

• Supports the following sampling frequencies (in Hz):8000, 9600, 11025,12000, 16000, 22050,
24000, 32000,44100, 48000, 88200*, 96000

• Supports 16-bit and 24-bit Linear PCM I/O,and 16-bit AC-3 Output over S/PDIF TOSLink

• Supports the following audio protocols:ASIO,WDM, MME, SoundManager, CoreAudio

• Unique hybrid optical/analog input jack automatically detects whether input is analog or
optical digital

• 1/8” mic input provides power for electret condenser mics

• software-controlled input and output levels, using standard Windows or MacOS
volume controls

Audio Performance Specifications:

• Input: Dynamic Range 100 dB (typical –60 dB input,A-weighted);

Signal-to-Noise Ratio 100 dB (typical,A-weighted); THD+N –90 dB = 0.00316% (typical)

• Output: Dynamic Range 104 dB (typical –60 dB input, A-weighted); Signal-to-Noise
Ratio 104 dB (typical,A-weighted); THD+N –94 dB = 0.00316% (typical)

* Transit USB does not support analog recording at 88200 Hz.

System Requirements,Windows:

Minimum:

•Pentium II 350 MHz • 64 MB RAM

• CD-ROM drive • Available USB 1.1 port

• Windows 98SE, ME, 2000 or XP

Recommended:

•Pentium III 500 MHz or faster • 128 MB RAM or more

•DVD-ROM drive and DVD player application (for Dolby Digital playback)

•Available USB 1.1 port • Windows 98SE, ME, 2000 or XP

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Introduction

Thanks for choosing the Transit USB by M-Audio.Transit USB is your compact, professional
audio solution for any Windows or Macintosh computer*, using the convenience of USB
connectivity – no need to disassemble your computer, no bulky external power supplies.
Transit USB gives you full 24 bit digital audio at sampling rates from 8 kHz to 96 kHz, with
the flexibility of both analog and optical digital connectors in a lightweight form factor you
can carry with you anywhere.

Please take the time to read this concise Users’ Guide. It will explain how to install the
Transit USB on your computer, and tell you how to get the best performance out of your
Transit USB audio interface.

* must meet minimum system requirements

What’s in the Box?

The following items are included with your Transit USB:

•Transit USB audio interface

• One (1) standard USB cable

• One (1) TOSLink to 1/8” Optical plug adapter

• M-Audio Driver CD (includes driver installation software)

• Users’ Guide and Warranty Card

Transit USB Specifications

Product and Operational Features:

• Single USB 1.1 connection for input and output

• S/PDIF 1/8” mini Optical In or 1/8” mini Analog Mic/Line In

• S/PDIF optical out and 1/8” mini Analog Line Out

• Sleek, slim plastic case with blue power LED.

• Completely USB powered (no power supply needed)

• One year warranty

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3. Analog Line-Output Jack – This 1/8” mini-jack accepts a standard stereo plug, such as
those used for connection with portable audio devices and powered computer speakers.
If you need to connect with a home stereo system, you may obtain a cable or adapter
with 1/8” stereo plug on one end and two male RCA plugs on the other.This output also
boasts enhanced current drive, so you can connect a pair of headphones as well.

4. Optical Digital-Output Connector – This is a standard optical connector for digital audio,
sometimes called a TOSLink connector, and accepts a standard optical digital cable.This
port can output either stereo digital audio or digitally encoded multichannel audio.This
output comes with a plastic cover which should be removed and stored for later use
when transporting the Transit USB.

5. Optical / Analog Mic/Line Input Jack – This is a hybrid optical/analog jack which can
accept either analog input via a standard 1/8” stereo mini plug, or optical digital input
with the included mini-optical adaptor.The input jack automatically senses whether the
input is analog or digital.The analog input can also accept Mic-level input, and provides
plug-in power for electret condenser microphones.

Software Installation

Your Transit USB comes with driver software that allows it to communicate with your particular
computer (Mac or PC) and operating system.Please locate the section for your computer type and
operating system and follow the instructions for installing the driver software.

Your Transit USB comes with a standard USB cable.The squared end of the cable connects
to the Transit USB;the flat end connects to your computer’s USB port. Do NOT connect the
Transit USB to your computer until instructed to do so.

Windows XP

1. Place the Transit USB CD into your CD-ROM drive. Do NOT connect the Transit USB
to your computer’s USB port at this time. Browse the CD content and double click the
Transit USB folder.Then double click the Transit USB Icon.

2. The M-Audio Transit USB Installer screen will appear, asking you to confirm that you wish

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System Requirements, Macintosh:

Minimum:

• G3, G4, iMac, iBook or Powerbook with native USB support

• 64 MB RAM • CD-ROM drive

• Mac OS version 9.2.2, MacOSX version 10.1.5 or later, or MacOSX “Jaguar” version

10.2.4 or later

Recommended:

• G3, G4, iMac, iBook or Powerbook with native USB support

• 128 MB RAM

•DVD-ROM drive

• MacOSX “Jaguar” version 10.2.4 or later

Transit USB Features

This diagram is an illustration of your Transit USB, with descriptions and information about
its physical features,which are described here.

1. USB Connector – Connect the squared “device” end of the supplied USB cable here.

2. Power LED – This LED lights bright blue when Transit USB receives power from your
computer’s USB port.This will occur when Transit USB sees a valid USB connection to
your computer, and the computer is powered on and the USB port enabled.

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default settings for CD and DVD playback selected. Unless you’re certain your hardware is
incompatible with these settings, it is recommended that you leave them selected .

6. You will be prompted to restart your computer. Click Finish to restart.

7. On rebooting, the M-Audio Transit USB Control Panel icon will appear in the system
tray. Connect the Transit USB to your computer’s USB port.Windows will now display
the Found New Hardware dialog and will open the New Hardware Wizard.

8. Choose the selection,“Install the software automatically,” and click Next.

9. The New Hardware Wizard will write the remaining files to your system.You may once

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to install Transit USB. Click Next to continue.

3. The installer will copy the Transit USB files to your computer’s hard drive.

4. The Software Installation window may appear one or more times,warning you that the driver
software has not passed the Windows Logo testing. Click the “Continue Anyway” button.

5. After the driver files have been installed,the Performance Enhancements screen appears with

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3. The installer will begin to copy the Transit USB files to your computer’s hard drive.

4. The Digital Signature window will appear, warning you that the driver software does not
contain a Microsoft digital signature. Click the Yes button to continue the installation.

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again see the warning that the driver software has not passed the Windows Logo testing;
click “Continue Anyway” and allow the installation to complete. Click Finish.

10. After the installation is complete, you may double-click on the M-Audio Transit USB
Control Panel icon to open the Transit USB Control Panel. See the section “Transit USB
Control Panel” for more information on the Control Panel’s features and function.

Windows 2000

It is important to make sure, when installing under Windows 2000,that you have the Service
Pack 3 installed.To obtain this update,visit the Windows Updates area at www.microsoft.com.

Note: Transit USB requires that you have Microsoft DirectX version 8.1 or later
installed. The Transit USB installer will automatically check for the correct
version of DirectX and install the latest Direct X update. This update will be
skipped if you already have DirectX version 8.1 (or higher) in your system.

1. Place the Transit USB CD into your CD-ROM drive. Do NOT connect the Transit USB
to your computer’s USB port at this time. Browse the CD content and double click the
Transit USB folder.Then double click the Transit USB Icon.

2. The M-Audio Transit USB Installer screen will appear, asking you to confirm that you
wish to install Transit USB. Click Next to continue.

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