dCS Scarlatti Clock
User Manual
Software Issue 1.0x
June 2008
Filename: Scarlatti Clock Manual v1_0x.doc
Page 11
English version
R
EAR
P
ANEL
G
H
I
J
K L M
REF. IN
WORDCLOCK OUTPUTS
1
2
3
4
5
6
7
8
1394
SUC
50/60 Hz, 30W
FUSE
T 500mA L
~
Figure 3 – Rear panel
Word clock is used for synchronisation only, it does not carry digital data.
Word Clock Outputs
The unit has eight identical
Word Clock Outputs
(G), all of which carry standard word clock at either
44.1kHz or 48kHz.
Ref In
put
The
Ref In
connector (H) allows the unit to be locked to an accurate external reference, such as an
atomic clock or a GPS clock. With the
Coupling
menu page set to
TTL
, the unit will lock to an external
word clock at 32, 44.1, 48, 88.2 or 96kHz. With the
Coupling
menu page set to
Bipolar
, the unit will
lock to a 10MHz reference.
As the
Scarlatti
Clock is a grade 1 master clock, there is nothing to be gained by locking it to a less
stable or less accurate reference!
1394
Interface
There is provision for fitting an IEEE 1394 interface (I), which may be added at a later date. As a
Master Clock does not generate or accept digital data, this will be used for control purposes only.
SUC
Connector
The SUC connector (J) is an RS232 interface, primarily used to remotely control the unit during
automated testing. Please contact
dCS
for advice on using this interface with a household automation
system. Note that we recommend using infra-red remote control instead.
Mains inlet
Power is connected via a standard IEC320 connector (K), protected by a fuse (L) and isolated by a 2-
pole power switch (M).
