Specifications; Ratings; Analog Inputs - Teac Tascam Celesonic US-20x20 Mode D'emploi

Sound breaks up or there is noise.
8
The processing load on the computer causes sound to break up
and noise to occur.
Here are some methods to reduce the load on the computer.
1. A wireless LAN and software running in the background,
including antivirus software, regularly put processing
loads on the computer, which can cause sound to break up
and other noise. Stop wireless LAN transmission, antivirus
software and other software running in the background
when using this unit.
2. Set the buffer size (latency) in the audio application that
you are using or in this unit's Settings Panel to a larger value
(Windows only).
NOTE
Consult the maker of the audio application that you are
using for methods to reduce its load on your computer.
3. Change the settings of your computer so that they are
optimal for audio processing.
Windows 8
In Windows 8, right-click the ordinary start screen
1
(Metro user interface screen) and then click "All apps".
Right-click "Computer" and select "Properties".
2
Click "Advanced system settings".
3
Click "Settings" in the "Performance" section of the
4
"Advanced" tab of the "System Properties" window.
In the "Visual Effects" tab of the "Performance Options"
5
window, select "Adjust for best performance".
Windows 7
a) Turn Aero off.
Right-click the desktop and select "Personalize".
1
Select a "Basic" or "High Contrast" theme.
2
b) Performance settings
Right-click "Computer" and select "Properties".
1
Click "Advanced system settings".
2
Click "Settings" in the "Performance" section of the
3
"Advanced" tab of the "System Properties" window.
In the "Visual Effects" tab of the "Performance Options"
4
window, select "Adjust for best performance".
Mac OS X
Open "System Preferences..." from the Apple menu,
1
and select "Energy Saver".
Set "Computer sleep" to "Never".
2
Set "Display sleep" to "Never".
3
NOTE
Depending on the Mac OS X version and Mac computer
model, this setting might not be available.
4. Change the USB port
Since the unit might not properly function with some USB
ports, try connecting to a different USB port.
NOTE
• Try again after disconnecting other USB devices. (Keyboards
and mice can be left connected.)
• Do not use a USB hub. Always connect the unit directly to a
USB port on the computer (built-in)
16
TASCAM US-20x20

Specifications

Ratings

Sampling frequencies
8
44.1, 48, 88.2, 96, 176.4, 192 kHz
Quantization bit depth
8
16/24-bit

Analog inputs

Mic inputs (balanced, IN1–IN2)
8
Connector: XLR-3-31 equivalent (1: GND, 2: HOT, 3: COLD)
Input impedance: 2.4 kΩ
Nominal input level (gain knob at MAX): −68 dBu (0.0003
Vrms)
Nominal input level (gain knob at MIN): −12 dBu (0.195
Vrms)
Maximum input level: +8 dBu (1.947 Vrms)
Gain range: 56 dB
Instrument inputs (unbalanced, IN1–IN2)
8
Connectors: 6.3mm (1/4") standard TS jacks
(Tip: HOT, Sleeve: GND)
Input impedance: 1 MΩ or more
Nominal input level (gain knob at MAX): −68 dBV (0.0004
Vrms)
Nominal input level (gain knob at MIN): −12 dBV (0.251
Vrms)
Maximum input level: +8 dBV (2.512 Vrms)
Gain range: 56 dB
Line inputs (balanced, IN1–IN8)
8
Connectors: 6.3mm (1/4") standard TRS jacks
(Tip: HOT, Ring: COLD, Sleeve: GND)
Input impedance: 10 kΩ
Nominal input level (gain knob at MAX): −52 dBu (0.0019
Vrms)
Nominal input level (gain knob at MIN): +4 dBu (1.228 Vrms)
Maximum input level: +24 dBu (12.282 Vrms)
Gain range: 56 dB
Line inputs (unbalanced, LINE IN 9–10)
8
When LEVEL switch set to −10dBV
Connectors: 6.3mm (1/4") standard TS jacks
(Tip: HOT, Sleeve: GND)
Input impedance: 10 kΩ
Nominal input level: −10 dBV (0.3162 Vrms)
Maximum input level: +10 dBV (3.162 Vrms)
Line inputs (balanced, LINE IN 9–10)
8
When LEVEL switch set to +4dBu
Connectors: 6.3mm (1/4") standard TRS jacks (Tip: HOT,
Ring: COLD, Sleeve: GND)
Input impedance: 10 kΩ
Nominal input level: +4 dBu (1.228 Vrms)
Maximum input level: +24 dBu (12.282 Vrms)