User Guide

dCS Purcell User Manual Manual for Software Issue 2.2x
dCS Ltd September 2004
Manual filename: Purcell Manual v2.2x.doc Page 11 email: [e-mail]
English version web-site: www.dcsltd.co.uk
Step 1 – Selecting a Digital Input
do this: Switch on the source equipment. If appropriate, load a disk / tape and set the
machine in PLAY mode to ensure it is generating a digital audio data stream.
Connecting to a Single AES or SPDIF source
Most source equipment (such as CD transports, DVD players) is fitted with a
single wire digital output, usually on an RCA phono connector.
do this: Connect your source equipment to the matching input on the Purcell rear panel
using a suitable cable.
do this: Press the Input button repeatedly until your chosen input is displayed on the
input indicator, to the right of the display. This will be either AES, RCA, TOS or
BNC.
The unit will lock to the source, displaying in sequence Locking, d xxx (the
sample rate) then the default display (probably 44.1→
→→
→44.1, depending on the
Disp menu setting and the source format).
Step 2 - Setting the Output Sample Rate
do this: Choose one of the following sections:
Sample Rate Conversion x
do this: To change the Output Sample Rate, press the Output button repeatedly to
cycle through the available conversions. Choose a sample rate to match your
DAC (usually the highest sample rate your DAC will handle).
do this: DSD is available on units fitted with the optional IEEE 1394 interface.
NonClone must be set. DSD data will be available from the 1394 outputs. Do
not use the other outputs.
Bit-for Bit Operation x
do this: If you need bit-for-bit operation (for example to pass through HDCD data
unchanged), you must first use the Output button to set the Output Sample
Rate to be the same as the Input sample Rate (for example 44.1→
→→
→44.1).
do this: Press the Function button once to open the menu, then press the Output
button repeatedly until the display shows NonClone or Cloning. If necessary,
use the
Select button to set this to Cloning.
Setting the Output mode x
do this: This setting determines whether conversions to 88.2 or 96kS/s are output as
Single AES or Dual AES. Open the Menu and press the Output button
repeatedly until Out Mode is displayed. Select the mode you want:
• Single
SingleSingle
Single. The Output Sample Rate must not be higher than 96kS/s. Single
wire data will be available on all of the AES 1, AES 2, RCA and BNC
outputs.
• Dual AES
Dual AESDual AES
Dual AES. The Output Sample Rate must be 88.2, 96, 176.4 or 192kS/s.
Dual AES data will be available on the AES 1 / AES 2 output pair. Do not
use the other outputs.