TC Electronic M-ONE, Руководство пользователя

Страница: 13 / 46

11
I&O SETUP
I/O Setup
Basic operation
• Press the I/O SETUP key to enter the global
setup parameters of the M•ONE.
• Use the ARROW keys to select parameters
and the CONTROL wheel to change
parameter values.
All changes in the I/O Setup menu are
instantly effective.
Input Source
Analog
Select the Source parameter using the
ARROW keys.
The source display arrow is lit. Dial the
CONTROL wheel to select between Analog or
Digital. When "Analog" is selected M•ONE
automatically defaults to the internal 44.1kHz
clock as Sample Rate and analog Input is lit in
the display.
Digital
When "Digital" is selected the M•ONE attempts
to lock to the S/PDIF Input. The incoming clock
will be displayed by the 44.1 or 48kHz display
icons and the Digital In icon will be lit. During
the lock-up period the Digital In icon will be
blinking indicating none or unacceptable clock,
and the Outputs are muted. When "lock" is
achieved the matching Clock Rate icon is lit,
and the Outputs are un-muted.
ANLGLEFT (M•ONE XL only)
With this selection analog Input type is
selected and the Left XLR Input connector
must be used.
Clock
Analog Input
When Input source is analog the following
Sample Rates are available:
Internal 44.1kHz: The M•ONE runs at
internal 44.1kHz.
Internal 48kHz: The M•ONE runs at
internal 48kHz.
Digital: The M•ONE locks to the
incoming Digital clock.
Digital Input
When Input Source is digital the M•ONE
following Sample Rates are available:
Internal 44.1kHz: The M•ONE runs at
internal 44.1kHz.
Internal 48kHz: The M•ONE runs at
internal 48kHz.
Digital: The M•ONE locks to the
incoming Digital clock.
Please note that when using internal
clock with external digital audio, the
incoming digital audio must be in sync
with the M•ONE internal clock in order
to avoid slip-samples.
***Rate Mismatch****
This Error message will occur in the
display if the M•ONE detects
slipsamples. Typically this problem
only occurs in very special clock setups e.g. if
the M•ONE is running via internal clock, while
processing audio from the Digital Input. If the
incoming clock and the internal clock do not
match the M•ONE will display the above
written error message.
Out Range
Range: 2dBu, 8dBu, 14dBu and 20dBu.
Sets the maximum Gain range of the analog
Output stage.
Out level
Range: 0 to Off (-100dB) in 1dB increments.
Controlling the overall digital/analog Output
level.
Digital In Gain
Sets the digital Input level. This level only
affects the digital level.
Dither
Going from one type of bit resolution to a
lower, e.g. from 24 bit to 16 bit, you actually
loose 8 bits of information.
The process of cutting off bits is called
truncation and it introduces digital distortion of
low level signals, due to the lack of complete
signal information. To compensate for this,
dither must be applied. Dither is a small
amount of filtered noise that generates
randomization at the noise floor, ensuring a
less distorted low level signal.
Dithering is relevant only on digital Outputs
and it is always the receiving device that
determines the number of bits you must dither
to. A CDR or a DAT recorder should normally
be dithered to 16 bit.