TC Electronic D-TWO, Руководство пользователя

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13
SETUP
Setup
The Setup menu holds all general Setup-
parameters including parameters normally
found in Utility, Level and I/O menus.
Basic Operation
• Press the SETUP key to enter the Setup
page.
• Use the ARROW keys to select parameter.
• Use the CONTROL wheel to change
parameter value.
All changes are instantly effective.
Mono/ Stereo In
The channel select on Analog Inputs is done
automatically via sensing on the Input
connectors.
Input Select
Dial the CONTROL wheel to select between
Analog or Digital.
Analog Input
When "Analog" is selected the D•TWO
automatically defaults to the internal 44.1kHz
clock as Sample Rate.
Digital Input
When "Digital" is selected the D•TWO attempts
to lock to the S/PDIF Input. During the lock-up
period the "DI" display icon flashes indicating
none or unacceptable clock, and the Outputs
are muted.
When lock is achieved the "DI" icon turns solid,
and the Outputs are un-muted.
Clock
Analog Input
When Input source is analog the following
Sample Rates are available:
Internal 44.1kHz - The D•TWO runs at internal
44.1kHz.
Internal 48kHz - The D•TWO runs at internal
48kHz.
Digital - The D•TWO locks to the incoming
Digital clock.
Digital Input
When Input Source is digital the following
Sample Rates are available:
Internal 44.1kHz - The D•TWO runs at internal
44.1kHz.
Internal 48kHz - The D•TWO runs at internal
48kHz.
Digital - The D•TWO 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 set D•TWO internal clock in
order to avoid slip-samples.
***Rate Mismatch****
This Error message will occur in the
display if the D•TWO detects slip-
samples. Typically this problem only occurs in
very special clock setups e.g. if the D•TWO is
running via internal clock, while processing
audio from the Digital Input. If the incoming
clock and the internal clock does not match the
D•TWO will display ***Rate Mismatch****
Out Range
Sets the maximum gain range of the analog
Output stage.
Range: 2dBu, 8dBu, 14dBu and 20dBu.
Out level
Range: 0 to Off (-100dB) in 1dB increments.
Controlling the overall digital/analog Output
level.
Digital In Gain
Adjusts the digital In level. This parameter is
only active when digital In is selected.
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 bits.