About Digital Connections And The Master Clock; Digital Sound Device And Master Clock - Roland VM-C7100 Owner's Manual

About Digital Connections and the Master Clock

Digital sound device and master clock

To share digital audio signals between this system and any external digital device, a
common master clock signal (word clock) must be used.
Master clock (word clock)
Digital sound devices such as this system, CDs, DAT recorders and digital multi-
track recorders, generally operate based on internal master clock signals called
"word clocks."
To exchange digital audio signals between digital devices, word clocks from one of
the devices must be used as the timing foundation of all other connected digital
devices. When a device is successfully receiving timing information from word
clocks generated by another device, it is referred to as being "locked to (or
synchronized with) external word clocks." Word clocks are supplied via a digital
audio I/O or dedicated word clock terminal.
* Note: If digital devices are not synchronized properly, undesirable digital noise
and/or intermittent unwanted sound may result, preventing the digital audio
signals from being exchanged successfully.
The following seven word-clock sources are available:
INTERNAL...
MULTI 1–8...
MULTI 9–16...
MULTI 17–24...
CASCADE...
WORD CLOCK IN...
DIGITAL IN...
INTERNAL word clock is selected by default. This setting can be changed on the
digital I/O screen ([SHIFT] + [PROJECT]
refer to 32.
Internal clock of the first mixing processor (1st UNIT).
Equipment to which the 1st connector (1 to 8) of the R-BUS
is connected.
Equipment to which the 2nd connector (9 to 16) of the R-
BUS is connected.
Equipment to which the 3rd connector (17 to 24) of the R-
BUS is connected.
Second mixing processor (2nd UNIT) connected in cascade.
Clock supplied from the WORD CLOCK IN terminal.
Equipment connected to the IN terminal of DIGITAL A or
B.
CURSOR [DOWN]
Chapter 1 Introduction
The R-BUS connector is
added by installing a VM-
24E (sold separately). To
use two processors, a
cascade connector (VM-24C
sold separately) is required.
VM link (p. 247),
[F1]). For details,
R-BUS (p. 243),
Cascade (p. 233)
The console is always
supplied with word clocks
by the first mixing
processor. When the
processor is synchronized
to word clocks of another
device, the console is also
supplied with these clocks
via the VM link.
31