Before calling support, always make sure you have the latest drivers and firmware installed. Check the TASCAM web site periodically for updates.
Check out the FAQ to find some useful troubleshooting tips.
This control panel is used to control the TASCAM US-122L or US-144 Audio/MIDI
interface. The left side of the control panel shows status information
and the right side contains one or more menus, depending on which interface
is connected. An explanation of each item in the control panel follows:
ITEMS THAT ARE ALWAYS VISIBLE
Device: This indicates whether a
Driver Version: This displays the version of the TASCAM US-122L
/ US-144 driver that is currently installed on your computer. In OSX,
a US-122L or US-144 must be connected for the driver version to be displayed.
Consult TASCAM's
web site to ensure you are running the most recently released driver.
ITEMS ONLY VISIBLE WHEN A US-122L OR US-144 IS CONNECTED
Audio Performance Menu: This menu is only available on Windows
XP. It controls how much time it takes for audio to get into and out of
the computer. This is known as latency. There are five choices of
latency. On slower computers, lower latency settings may cause the audio
to be interrupted by pops, clicks, or noise. If this occurs, try using
a higher latency setting.
The OSX control panel does not have an Audio Performance menu. In OSX,
the audio latency is adjusted by changing the buffer size from within the audio
application that is being run. Not all OSX audio applications permit the
buffer size to be adjusted. Please consult the documentation for your
audio application.
Connection Type: This displays the type of USB connection being
used to communicate with the device. This will be either "USB 2.0" or
"USB 1.1". To enjoy all the features your TASCAM
US-122L or US-144 offers, you must plug it into a USB 2.0 host port on your
computer. It is possible to use a USB 1.1 host port, but the device will
then only operate at 44.1 kHz or 48 kHz sample rates, and the US-144 will only
transfer 2 channels to and from the computer. Please note that connecting
a device to a USB 2.0 computer port through a USB 1.1 hub will force the device
to use a USB 1.1 connection.
Firmware Version: This shows the version of the firmware inside
the connected US-122L or US-144. Consult TASCAM's
web site to ensure you are running the most recently released firmware.
Sample Width: The
Sample Rate: This shows the current sample rate being used by the
driver and US-122L or US-144. When connected to a USB 2.0 port, this can
be 44.1 kHz, 48 kHz, 88.2 kHz, or 96 kHz. Please note that using a USB
1.1 connection will limit the possible sample rates to 44.1 kHz or 48 kHz.
ITEMS ONLY VISIBLE WHEN A US-144 IS CONNECTED
Sample Clock Source: This displays the current source of the US-144's
digital audio clock. If it says "internal", it means that the US-144 is
generating its own digital audio clock. If it says "digital", it means
that the US-144 is locked to a clock signal present at the digital input.
Sample Clock Source Menu: This menu determines which digital audio
clock source will be used. If "automatic" is selected, the digital input
will be used if there is a valid signal connected to it; otherwise, the internal
clock will be used. If "internal" is selected, the internal sample clock
will always be used, regardless of what is connected to the US-144's digital
input.
Digital Input Status: This shows the status of the US-144's digital
input. If there is no cable connected to the digital input, or if there
is a cable connected but the signal cannot be recognized, it will report "no
valid signal". If there is a cable connected and the signal is good, it
will report "valid signal" and its sample rate. If the Sample Clock Source
Menu is set to "internal", the digital input status will report "unavailable"
because the digital input cannot be used when the device is using its internal
digital audio clock.
Digital Output Format Menu: This menu controls what type of digital
format will be transmitted by the US-144. "S/PDIF" is the digital format
used by many consumer products and professional products. S/PDIF is typically
carried on an RCA connector. Most devices that support the AES/EBU format
use XLR connectors, though some can use RCA connectors. In order to support
such devices, the US-144 can be set to transmit the AES/EBU format on its RCA
digital output connector. It is also possible to obtain an RCA to XLR
adapter that can be used when the US-144 is set to AES/EBU and the other device
being connected to has an XLR connector.
ITEM VISIBLE WHEN A US-144 IS CONNECTED TO A USB 1.1 PORT (This includes
connection via a USB 1.1 hub)
USB 1.1 Mode Input Selection: USB 1.1 cannot transfer data as fast
as USB 2.0. As a result, a US-144 communicating with the computer via
USB 1.1 cannot transfer 4 audio input/output channels to and from the computer.
When connected to a USB 1.1 port, the US-144 transfers 2 audio input/output
channels to and from the computer. The 2 audio output channels coming
from the computer are present at both the US-144's analog and digital outputs.
This menu controls which set of input jacks, analog or digital, will be active.
