Tascam US-122L User manual

US-122L
USB Audio/MIDI Interface
D00927620A
»
OWNER'S MANUAL

2TASCAM US-122L
IMPORTANT SAFETY PRECAUSIONS
TO THE USER
This equipment has been tested and found
to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reason-
able protection against harmful interference
in a residential installation. This equipment
generates, uses, and can radiate radio fre-
quency energy and, if not installed and used
in accordance with the instruction manual,
may cause harmful interference to radio com-
munications.
However, there is no guarantee that interfer-
ence will not occur in a particular installation.
If this equipment does cause harmful interfer-
ence to radio or television reception, which
can be determined by turning the equipment
off and on, the user is encouraged to try to
correct the interference by one or more of the
following measures.
a) Reorient or relocate the receiving anten-
na.
b) Increase the separation bet ween the
equipment and receiver.
c) Connect the equipment into an outlet on
a circuit different from that to which the
receiver is connected.
d) Consult the dealer or an experienced
radio/TV technician for help.
CAUTION
Changes or modifications to this equip-
me nt no t ex pre ss ly a p pr o v e d by TE AC
CORPORATION for compliance could void
the user's authority to operate this equip-
ment.
For U.S.A.
Declaration of Conformity
Model Number: US-122L
Trade Name: TASCAM
Responsible party: TEAC AMERICA, INC.
Montebello, California, U.S.A.
Telephone number: 1-213-726-0303
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interfer-
ence, and
( 2) This device must accept any inter fere nce
received,
including interference that cause undesired oper-
ation.
This appliance has a serial number
located on the rear panel. Please
record the model number and serial
number and retain them for your
records.
Model number
Serial number

TASCAM US-122L 3
IMPORTANT SAFETY INSTRUCTIONS
1 Read these instructions.
2 Keep these instructions.
3 Heed all warnings.
4 Follow all instructions.
5 Do not use this apparatus near water.
6 Clean only with dry cloth.
7 Do not block any ventilation openings.
Install in accordance with the manufactur-
er's instructions.
8 Do not install near any heat sources such
as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that pro-
duce heat.
9 Only use attachments/accessories speci-
fied by the manufacturer.
10 Use only with the cart, stand, tripod, brack-
et, or table specified by the manufacturer,
or sold with the apparatus. When a cart is
used, use caution when moving the cart/
apparatus combination to avoid injury from
tip-over.
• Do not expose this apparatus to drips or
splashes.
• Do not place any objects filled with liquids,
such as vases, on the apparatus.
• Do not install this apparatus in a confined
space such as a book case or similar unit.
Microsoft, Windows, and Windows XP
are registered trademarks in the United
States and other countries of Microsoft
Corporation, USA.
Pentium is a registered trademark of
Intel Corporation, USA.
MIDI is a registered trademark of the
Association of Musical Electronics
Industries.
Other company names and product
names in this document are the trade-
marks or registered trademarks of their
respective owners.
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4TASCAM US-122L
Contents
1 Introduction
Overview ..................................... 5
Features ....................................... 5
What is in the package .................. 5
Conventions used in this manual .... 6
2 Parts of the US-122L
Top panel..................................... 7
Rear panel ................................... 8
Front panel .................................. 9
3 Installation
System requirements ............... 10
Windows XP ................................. 10
Mac OS X....................................... 10
Installing the drivers ................ 11
Installing the drivers
for Windows XP........................11
Installing the drivers
for Mac OS X ............................ 12
Installing Cubase LE.................. 12
Settings on your computer ...... 12
4 Control panel settings
Overview ................................... 13
Driver settings .......................... 13
Audio Performance ...................... 13
5 Connections
USB connections ....................... 14
Audio connections.................... 14
MIDI connections...................... 16
6 Recording with Cubase LE
Input setting ............................. 17
Recording .................................. 18
Mixdown ................................... 19
7 Troubleshooting............. 20
8 MIDI Implementation
Chart .................................. 22
9 Specifications and
performance
Audio specifications ................. 23
Audio performance .................. 24
Other characteristics ................ 24
Physical characteristics............. 25
Dimensions................................ 25

TASCAM US-122L 5
Please read this owner’s manual carefully
before you begin using the US-122L, and
use the product correctly as directed in
order to ensure long and trouble-free
enjoyment of all its functionality.
After you have read this manual, keep it
nearby for reference when required.
We can accept no responsibility for any
loss of the data you record using this prod-
uct onto other MIDI equipment in your
system or onto storage devices such as
hard disk.
1 – Introduction
Overview
The US-122L is a USB-based audio inter-
face designed for use with Digital Audio
Workstation (DAW) software. It provides a
two-input, two-output 24-bit 96 kHz audio
interface and a 16-channel MIDI interface.
Because the US-122L is USB-based, it is
the ideal companion to any desktop- or
laptop-based digital recording setup. And
since the US-122L operates using only
USB power, you can use it with a laptop
computer to create a very compact and
portable digital audio workstation system.
The US-122L is also an ideal way to cap-
ture analog sources such as records or cas-
sette tapes into your computer and pre-
serve them as audio CDs.
Features
24-bit / 96 kHz audio interface.
Analog input signals (L, R) can be input
at the same time and recorded simultane-
ously into your computer via USB.
Two XLR mic/line inputs (balanced) and
two 1/4” phone mic/line inputs (bal-
anced/unbalanced) are provided. One of
the 1/4” phone inputs can be switched to
allow direct input of an electric guitar or
electric bass (R channel only).
Unbalanced stereo line output (RCA
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•
•
•
connector) and headphone output.
MIDI IN/OUT.
Direct Monitor function allows zero-
latency monitoring of the input.
Power is supplied by the USB connector.
A note about computer opera tion
If you are unsure about how to perform
basic computer operations appearing in
this manual, please refer to the owner’s
manual that came with your computer.
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•
•
What is in the package
The US-122L package contains the follow-
ing items.
US-122L main unit
USB cable
Owner’s manual (this document)
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•
•
CD-ROM ( containing drivers and manuals )
CD-ROM (Gigastudio 3 LE) [Windows
only]
CD-ROM (Cubase LE)
•
•
•

6TASCAM US-122L
1 – Introduction
Conventions used in this manual
The following conventions are used in this
manual:
Front panel keys, knobs, and indicators,
and rear panel connectors are designated in
all-capital letters.
Example: LINE IN jacks
This typeface is used to designate messag-
es displayed by the software.
Example: Control Surface Protocol
This typeface is used to designate software
menu functions and on-screen controllers.
Example: ASIO Device
6TASCAM US-122L

TASCAM US-122L 7
Top panel
2 – Parts of the US-122L
1PHONES/LINE OUT level knob
Controls the output level of the LINE OUT
jacks and the PHONES jack.
2MIDI IN indicator Lights when MIDI
data is being received at the MIDI IN con-
nector.
MIDI OUT indicator Lights when MIDI
data is being transmitted from the MIDI
OUT connector.
3USB indicator Lights to indicate a
valid USB connection to the host comput-
er.
4MON MIX balance knob Controls
the balance of the signal sources being out-
put from the LINE OUT jacks and the
PHONES jack. When this knob is turned to
the far left, the signal being input to the
US-122L (from the XLR jacks, or 1/4"
phone jacks) will be output. When this
knob is turned to the far right, the output
signal received from the computer via USB
will be output.
5MONO switch Turn this switch ON if
you want to monitor in monaural. This
switch affects only the analog input signal.
6INPUT knobs (L, R) Adjust the level
of the audio signal being input to the MIC
IN jacks and LINE IN jacks.

8TASCAM US-122L
2 – Parts of the US-122L
7SIG/OL indicators Light when signals
are being input to the input channels (L,
R). They will light green to indicate a sig-
nal is present, and will light red immedi-
ately before distortion occurs. These indi-
cators apply only to the analog inputs.
NOTE
These indicators will light green when
the input signal level is in the range of -
30 dBFS to -2 dBFS. The indicators will
light red when the input signal level
exceeds -2 dBFS.
8MIC/LINE-GUITAR select switch Set
this switch as appropriate for the input
source you have connected to the LINE IN
jack R channel. Use the GUITAR position if
you have directly connected an electric
guitar or electric bass. Use the MIC/LINE
position if you have connected an electron-
ic musical instrument, audio device, or mic.
9PHANTOM switch Turns on the +48V
phantom power supplied to the MIC IN
jacks.
WARNING
Microphones should not be connected
to or disconnected from the US-122L
with phantom power switched on.
Unbalanced dynamic microphones
should never be connected to phantom-
powered connectors.
NOTE
Turn this switch on only if you are using
condenser microphones that require
phantom power.
Please note that if you are operating
the unit with a battery-powered laptop
computer, the battery life of the com-
puter will be reduced if the PHANTOM
switch is on.
Rear panel
0USB connector Use a USB cable to
connect this to the host computer’s USB
2.0 port.
AMIDI OUT connector Transmits
MIDI messages.
BMIDI IN connector Receives MIDI
messages.
CLINE OUT L/R jacks (RCA connector,
unbalanced) These are analog stereo output
jacks.
NOTE
If you connect headphones to the
PHONES jack, no signal will be output
from the LINE OUT jacks.

TASCAM US-122L 9
2 – Parts of the US-122L
Front panel
DMIC IN (L, R) jacks (XLR balanced)
These are analog mic input jacks. The wir-
ing is as follows: pin 1 = ground, pin 2 =
hot, pin 3 = cold.
ELINE IN (L, R) jacks (TRS 1/4" phone
jacks) These are balanced line input jacks.
The R channel also accommodates guitar
input. If the top panel MIC/LINE-GUITAR
select switch is in the GUITAR position, the
R jack operates as an unbalanced input
jack for guitar.
If the MIC/LINE-GUITAR select switch is in
the MIC/LINE position, the R jack operates
as a balanced input jack. (Sleeve = ground,
tip = hot, ring = cold)
FPHONES jack (stereo 1/4" phone) This
is a headphone output jack.
NOTE
If you connect headphones to this jack,
no signal will be output from the LINE
OUT jacks.

10 TASCAM US-122L
System requirements
Windows XP
3 – Installation
Supported operating system: Windows
XP SP2
Recommended system: Pentium or
Athlon 1 GHz or faster (or equivalent pro-
cessor), 512 MB or more memory, USB 2.0
port
These requirements are for when using
Cubase LE. If you are using other applica-
tion software, you will need to consult the
operating requirements for the software
you are using.
NOTE
The number of usable audio tracks will
depend on the speed of your hard disk.
The faster your hard disk, the better
your results will be.
We recommend that you have at least
256 MB of memory, but when using dig-
ital audio application software, the
more memory you have the happier you
will be.
Although this product has been checked
for use with typical computers that
meet the above operating require-
ments, we cannot guarantee that it will
operate with all computers that meet
these requirements. Please be aware
that even under the same conditions,
processing capability may vary depend-
ing on differences of the design and
system.
Mac OS X
Macintosh computer with a USB 2.0
connector
Mac OS X 10.3.9 & higher on PowerPC
Mac systems
•
•
For Macintosh as well, the more memory
you have and the faster your hard disk, the
happier you will be when using digital
audio application software

TASCAM US-122L 11
3 – Installation
Installing the drivers
In order to use the US-122L, you must
install the appropriate drivers into your
computer. As described below, this is an
easy process using the CD-ROM included
with the US-122L.
Drivers are updated from time to time. You
can download the most recent version of
the drivers from the TASCAM website
<http://www.tascam.com/>.
Do not connect the US-122L to your com-
puter before you have installed the drivers.
CAUTION
Handle the enclosed CD-ROM with care.
If the disc becomes scratched or dirty,
your computer may be unable to read it
and the software cannot be installed. If
the disc becomes unreadable, a fee will
be charged for its replacement.
WARNING
Never attempt to play the enclosed CD-
ROM in a conventional audio CD player,
as the resulting noise may damage your
speakers or your hearing.
Installing the drivers for Windows XP
The US-122L’s drivers are provided on the
CD-ROM as an executable installer enti-
tled US-122L & US-144 driver x_yy.exe.
(x_yy is the version number.)
Installation procedure
Make sure that the US-122L is not
connected to your computer.
Double-click the executable installa-
tion file US-122L & US-144 driver x_
yy.exe. The installer will start up.
Select the desired language from the
menu and click the OK button. A dia-
log box will appear.
Click the Install the Driver button.
The drivers will be installed.
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NOTE
During driver installation, a warning
that this software ... has not passed
Windows Logo testing will appear. This
warning appears when you attempt to
install a driver that has not passed
Windows Logo testing; however, please
be assured that TASCAM has verified
that this driver for Windows XP does
work correctly.
If this message appears, click Continue to
proceed with the installation.
If a message asks you to restart your com-
puter, restart your computer.
After restarting, connect the US-122L to
your computer. The Windows Plug and
Play system will detect the new USB hard-
ware, and the Add New Hardware wizard
will start up. The wizard will automatically
find the necessary files. (This will take
about 30 to 60 seconds.)
The drivers are now installed, and the
US-122L is ready to operate.

12 TASCAM US-122L
3 – Installation
Installing the drivers for Mac OS X
The US-122L’s drivers are provided on the
CD-ROM as a package file entitled US-
122L & US-144 driver x_yy.mpkg. (x_yy is
the version number.) Simply double-click
on this package file’s icon to launch it and
follow the directions that appear on your
screen.
Installing Cubase LE
Insert the Cubase LE CD-ROM into
your computer.
The opening screen will appear.
Click the Install Cubase LE button.
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Enter the serial number of Cubase LE .
The Cubase LE serial number is
affixed to the soft case of the Cubase
LE disc.
When you have finished entering the
information, click the OK button.
Follow the instructions shown on the
screen with the installation.
When the installation is completed, a
dialog box indicating that installa-
tion was successful will appear, and
then you will return to the opening
screen.
Close the opening screen.
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Settings on your computer
Here are a few basic points to help you set
up your computer for best performance
with audio applications.
Do not run other applications. You will
probably use your computer for applica-
tions other than audio, but we recom-
mend that you avoid running other appli-
cations at the same time you are running
audio programs. Processing digital audio
places a considerable load on your com-
puter.
This means that if you are running other
applications (especially graphics or
•
Internet tools) at the same time as your
audio application, the processing may
not happen fast enough.
Certain devices such as network cards or
WinModems can cause conflicts with
USB processing. If you experience such
a conflict, you can use the Device
Manager to temporarily disable the
offending device.
If your computer has an IDE hard disk,
enabling Direct Memory Addressing
(DMA) will improve performance. In
Windows XP, this is enabled by default.
•
•

TASCAM US-122L 13
Overview
4 – Control panel settings
The Control Panel lets you make vari ous
settings for the US-122L’s functionality.
The Control Panel is divided into the fol-
lowing two sections.
Status section
This shows the current status of the driver
and the connected hardware.
You cannot edit the settings from this sec-
tion.
Setting section
Here you can edit the various settings of
the driver.
Driver settings
Audio Performance
The US-122L driver temporarily stores
input and output audio samples in buffers.
The Audio Performance setting lets you
adjust the buffer size. The Lowest Latency
setting is the minimum buffer size, and the
Highest Latency setting is the maximum
buffer size.
A smaller buffer size will reduce the delay
when monitoring the input signal, but will
require your computer to perform the pro-
cessing faster. If the processing does not
occur in time (e.g., if other system opera-
tions are occurring), you may hear clicks,
pops, or dropouts in the audio signal.
A larger buffer size provides more safety
against such problems caused by other sys-
tem activities, but will produce greater
delay when monitoring the audio signal.
The US-122L lets you select the buffer size
that works best for your system.

14 TASCAM US-122L
5 – Connections
USB connections
5 – Connections
Using the included cable, connect the
US-122L to your computer as shown in the
illustration.
NOTE
Some USB devices access the USB bus
frequently. To avoid dropouts and clicks
in the audio signal, we strongly recom-
mend that you do not connect other
USB devices to the USB bus used by the
US-122L.
USB keyboards and mice are exceptions
to this, and will probably not cause
problems.
USB
Computer
USB
Computer
Audio connections
Connect the output signal of your mic, gui-
tar, keyboard, or other audio device to the
US-122L, where it will be converted into
digital audio and sent via USB to your
computer. Connect the output of the
US-122L to your speakers (via an amp) or
headphones, so you will be able to monitor
the audio signals coming into the US-122L
or being produced by your computer.
NOTE
The US-122L has two input channels (L,
R), with a MIC IN jack (XLR) and LINE IN
jack (1/4” phone jack) provided for each
channel. Do not connect signals to both
of these analog input jacks at the same
time. If both are connected, the signal
will not be correctly input to the
US-122L.
Mic
Connect your mics to the MIC IN (L, R)
jacks (XLR). If you are using a condenser
mic that requires phantom power, turn on
the phantom power.
If you're using a
condenser mic
If you're using a
condenser mic

TASCAM US-122L 15
5 – Connections
Guitar
Connect your guitar to the R-channel LINE
IN jack (1/4” phone jack) and set the MIC/
LINE-GUITAR switch to GUITAR.
Keyboard / drum machine /
sound module / cassette deck /
MD / CD etc. (analog connec-
tion)
Connect the analog audio output of these
devices to the LINE IN (L, R) jacks (1/4”
phone jack). If you use the R-channel, set
the MIC/LINE-GUITAR switch to LINE.
Analog record player
The output of an analog record player can-
not be connected directly to the US-122L.
You must connect a phono amp between
your analog record player and the
US-122L. (Alternatively, you can connect
it via an audio amp that has PHONO
inputs.)
Speakers/headphones
GuitarGuitar
Keyboard /
drum machine /
sound module /
cassette deck /
MD / CD or similar device
OUT
Keyboard /
drum machine /
sound module /
cassette deck /
MD / CD or similar device
OUT
Analog record
player
OUT
Phono amp or
amp with PHONO input
Analog record
player
OUT
Phono amp or
amp with PHONO input
Headphones Powered speakers,
or amp and speakers
Headphones Powered speakers,
or amp and speakers

16 TASCAM US-122L
5 – Connections
MIDI connections
Connect your sound module, keyboard/
synthesizer, drum machine, or other MIDI
device to the US-122L as shown below.
You can use the MIDI IN/MIDI OUT con-
nectors to transmit and receive MTC
(MIDI Time Code). This allows the MTC-
compatible DAW (Digital Audio
Workstation) computer application to syn-
chronize with your MIDI equipment.
USB
Computer
MIDI OUT
MIDI IN
Sound module etc.
Keyboard /
synthesizer etc.
USB
Computer
MIDI OUT
MIDI IN
Sound module etc.
Keyboard /
synthesizer etc.
USB
MIDI OUTMIDI IN
Computer
Sequencer /
drum machine etc.
USB
MIDI OUTMIDI IN
Computer
Sequencer /
drum machine etc.

TASCAM US-122L 17
6 – Recording with Cubase LE
This chapter explains the basics you will
need to understand when using the
US-122L with Cubase LE.
This discussion is not intended to replace
the user manual of your software.
If you have questions specific to Cubase
LE, please refer to the Cubase LE user
manual.
6 – Recording with Cubase LE
Input setting
Start up Cubase LE. From the
Devices menu, choose Device Setup.
The Device Setup window will
appear.
From the device list in the left side of
the Device Setup window, choose VST
Multitrac.
In the right side of the window, click
the Setup tab, specify the ASIO Driver
for the interface that uses an ASIO
driver, and click the Apply button.
If you have connected the digital
input, set the Clock Source to exter-
nal.
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From the Devices menu, choose VST
Inputs to access the VST Inputs win-
dow. Verify that the Port field shows
the input name of the audio interface
you are using, and that the Active
indicator is lit.
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18 TASCAM US-122L
6 – Recording with Cubase LE
From the File menu, choose New
Project. A window will appear, allow-
ing you to choose a template for your
new project. Choose the desired tem-
plate and press the OK button.
Specify the location in which to save
your project, and the new project
will be created.
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Now you are ready to begin recording.
Recording
As the input for the track you want
to record, choose an input channel of
the audio interface you are using.
Then press the REC FUNCTION but-
ton to enable recording for that
track.
1� In the transport, press the REC but-
ton to begin recording.
When you are finished recording,
press the STOP button, and then
press the REC button to disable
recording. Rewind if necessary.
Repeat steps 1, 2, and 3 to overdub
additional tracks.
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REC FUNCTIONREC FUNCTION
STOP REC STOP REC

TASCAM US-122L 19
6 – Recording with Cubase LE
Mixdown
Move the left and right locators to
specify the region that you want to
mix down.
From the File menu, choose Export ->
Audio Mixdown.
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In the Export Audio Mixdown dialog
box, make the desired settings and
then press the Save button.
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Specify the regionSpecify the regionSpecify the regionSpecify the region

20 TASCAM US-122L
7 – Troubleshooting
This chapter lists frequently asked ques-
tions related to recording with Cubase LE,
with answers to these questions.
Q. I have finished making input
settings, but the meter of the
audio track is not moving.
A. Make sure that the monitor button of
the track is enabled.
Q. I would like to record two
channels simultaneously for a
stereo recording.
A. Before you record, press the stereo/
mono select button of the track so that the
yellow indicator is lit. In this case, the
track input is shown as In 1 + In 2 or a
similar indication.
Q. I am trying to use the EQ,
but it does not seem to do any-
thing.
A. Check the VST channel settings etc. to
make sure that EQ bypass is not enabled.
Q. I mixed-down a song that
was three minutes long, but
the result was only ten seconds
long.
A. Make sure that the left and right locator
region is set to the entire range that you
want to mix down.
Q. I cannot set the locator
region to more than ten min-
utes.
A. The default setting is ten minutes.
From the Project menu, choose Project
Setup and adjust the length of the project.
MonitorMonitor
Stereo/mono selectStereo/mono select
EQ bypassEQ bypass
7 – Troubleshooting