Teac UD-503 Manual Del Usuario página 18

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Settings (continued)
Upconversion
Use to activate the upconversion circuit when receiving PCM format
signals.
o See page 15 for the relationships between input sampling fre-
quencies and sampling frequencies after upconversion.
*UPCONVERT
> OFF
OFF
The original input signal is sent directly to the D/A converter
without upconversion.
2Fs
If the input audio signal is less than 2× a standard sampling fre-
quency (32, 44.1 or 48 kHz), it is upconverted 2× and then sent to
the D/A converter.
4Fs
If the input audio signal is less than 4× a standard sampling fre-
quency (32, 44.1 or 48 kHz), it is upconverted 4× and then sent to
the D/A converter.
8Fs
If the input audio signal is less than 8× a standard sampling fre-
quency (32, 44.1 or 48 kHz), it is upconverted 8× and then sent to
the D/A converter.
DSD
The input source is converted to DSD digital format, and then
sent to the D/A converter.
PCM digital filter
Use to set the digital filter when receiving PCM format signals.
*PCM D-FILTER
> OFF
OFF
The digital filter is disabled.
FIR SHARP
An FIR filter with a steep roll-off is used to sharply cut signals out-
side the audio band.
FIR SLOW
An FIR filter with a slow roll-off is used to gently cut signals out-
side the audio band.
SDLY SHARP
A short delay filter with a steep roll-off is used to sharply cut sig-
nals outside the audio band.
SDLY SLOW
A short delay filter with a slow roll-off is used to gently cut signals
outside the audio band.
o When receiving signals at 352.8 kHz or 384 kHz, the digital filter
will be disabled during playback regardless of this setting.
18
DSD digital filter
Use to set the digital filter when receiving DSD format signals.
*DSD D-FILTER
> CUTOFF 150kHz
CUTOFF 50kHz
50Hz cutoff frequency
CUTOFF 150kHz
150Hz cutoff frequency
Clock sync
o Clock sync is possible when the input source is USB.
*CLOCK SYNC
> OFF
OFF
No clock sync is used.
ON
This unit's master clock will be synchronized to the 10MHz clock
input through the CLOCK SYNC input connector (10MHz IN).
Headphones settings
*HEADPHONES
> STEREO
Make settings suitable for the headphones being connected (page
11).
STEREO
Unbalanced headphones
BALANCED
Balanced headphones
Balanced headphones are operated with differential drive.
The negative and positive connectors operate with opposite
polarities.
ACTIVE GND
Balanced headphones
The amp drives so that the negative connector of balanced head-
phones is 0 V.
To the headphones, the characteristics of the outputs become
equivalent.

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