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
Driver Version: This displays the version of the TASCAM
US-122L / US-144 driver that is currently installed on your
computer. Consult TASCAM's web site to
ensure you are running the most recently released driver.
Device: This indicates whether a
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.
