Data Conversion Systems dCS Puccini U-Clock, User Manual

Page: 10 / 15

dCS Puccini U-Clock User Manual Software Issue 1.0x
October 2008
Filename: Puccini U-Clock Manual v1_0x.doc
Page 10
English version
F
RONT
P
ANEL
Figure 4 – Front panel
DITHER Button
Press the DITHER button (A) to turn the Dither feature off and on. When the Dither is on, the LED to
the right of the button will illuminate.
The Dither feature is designed to exercise the Phase-Locked–Loop in the DAC and Transport to
improve the correction of small timing errors. Try it and see what you think!
FREQUENCY Button
Press the FREQUENCY button (B) to set the system clock frequency to 44.1k Hz or 48k Hz. One of the
two LEDs to the right of the button will illuminate to indicate the clock frequency.
When the USB interface is active, the clock frequency is set to suit the sample rate of the received
data. The
44.1k Hz and 48k Hz LEDs illuminate together to indicate the USB interface is active.
The correct clock frequency depends on the source sample rate:
•
Use 44.1 kHz if the sample rate is 44.1, 88.2, 176.4kS/s or DSD. (Typically CD or SACD
Transports / Players.)
•
Use 48k Hz if the sample rate is 32, 48, 96 or 192kS/s. (Typically DVD Players.)
POWER indicator
This indicator illuminates when the unit is powered up.