User Guide

dCS Purcell User Manual Manual for Software Issue 2.2x
dCS Ltd September 2004
Manual filename: Purcell Manual v2.2x.doc Page 39 email: [e-mail]
English version web-site: www.dcsltd.co.uk
IMPORTANT! SPDIF outputs are intended for use with Single AES, RCA, BNC or optical
inputs ONLY. If the selected input is in any other format, the SPDIF output
will carry either the left channel data or full scale noise.
IMPORTANT! If the selected input is SPDIF and the Copy Prohibit flag in the source data is
set, the SPDIF output will be the same and you will not be able to record the
data.
1394 Interface
Units fitted with an IEEE 1394 multi-channel interface are fitted with two 6-way
1394 connectors. If there are more than eight 1394 sources in the chain, Purcell
can be made inactive using the Transmit menu item, see page 22.
In this release, the unit generates DSD data at 2.822MS/s from either 1394
connector. For correct operation, the DAC must be locked to the 44.1kHz signal
on Purcell‘s WClk Out connector (or the system must be locked to a master
clock running at 44.1kHz). We recommend using the 1.8 metre long, 6-way
IEEE 1394 cable assembly and the BNC cable assembly provided. See
“IEEE 1394 Overview” on page 56 for more information.
IMPORTANT! Do not connect both 1394 outputs to the same DAC or other destination
equipment - the interface system will be stuck in an endless loop and will not
work.
Power Link
This can be linked to similar connectors on other dCS units using a link cable.
All units linked in this way may be turned on or off or set to standby by pressing
a single Power button or sending one Remote Control command. Link cables
are available from dCS.
SUC
The Software Upgrade Connector is intended to be used by dCS service agents
to load new software into Purcell.
IMPORTANT! Do not connect any other equipment to the SUC connector as this may
damage both Purcell and the equipment so connected. Do not operate
Purcell with a PC connected. Failure to observe this warning will void the
unit’s warranty, and may cause unpleasant effects in your system.
Power switch
The Power switch completely isolates the unit from the power supply. In normal
use, set it to the On position (I). Set it to Off (0) during electrical storms, or while
you are away for a long period.
IEC Power Inlet
Use with a 3 - pin IEC type power cable.
Mains Fuse
Replace only with a 20 x 5mm 500mA T HRC fuse. Please see page 66 for
replacement details.