17
Using multiple RPC-1 units
Settings for using multiple RPC-1
units
Up to four RPC-1 units can be used in a single computer.
Each RPC-1 is assigned a number from 1 through 4 in the
order in which the card was recognized (in general, starting
at the lowest-numbered PCI slot).
Settings for each card are made in the RPC-1 Control Panel.
For details refer to
p. 11 “RPC-1 Control Panel.”
In order to use multiple RPC-1 units simultaneously, all
cards and R-BUS devices must be synchronized.
Synchronizing multiple RPC-1 units
In order to synchronize multiple RPC-1 units, all RPC-1 units
must be set to the same sampling frequency, and share the
same word clock. The word clock can be shared in the
following two ways.
1. Supplying the word clock from R-BUS
Set an external R-BUS device or one of the RPC-1 units as the
word clock master
, and supply the word clock via the
external R-BUS device to the remaining RPC-1 unit(s). Set the
master clock to
Ext. Clock
on each
slave
RPC-1 (to which
the word clock is supplied).
If Master Clock is set to
Ext. Clock
, and a clock is input from
both the
Clock In Connector
and
R-BUS
, the
Clock In
Connector
will take priority. If you wish to input the word
clock
from R-BUS
, disconnect the
clock cable
.
2. Using the included clock cable to supply the
word clock
Set an external R-BUS device or one of the RPC-1 units as the
word clock master
, and supply the word clock via the
clock
cable
to the other RPC-1 unit(s). In this case, use the
included clock cable to connect the
Clock Out Connector
of
the device supplying the word clock to the
Clock In
Connector
of the device receiving the word clock. Set the
master clock to
Ext. Clock
on each
slave
RPC-1 unit that is
receiving the word clock.
If you are using a sampling frequency of
88.2 kHz
or
96 kHz
,
it is not possible to use a
clock cable
to synchronize multiple
RPC-1 units. Supply the word clock via R-BUS.
If Master Clock is set to
Ext. Clock
, and a clock is input from
both the
Clock In Connector
and
R-BUS
, the
Clock In
Connector
will take priority. If you wish to input the word
clock
from R-BUS
, disconnect the
clock cable
.
RPC-1 Driver ver.1.0.2
for
Macintosh
doesn’t support
simultaneous use of multiple RPC-1 units. This function will
be supported in the near future.
Immediately after an additional RPC-1 is added to a
computer in which an RPC-1 has already been installed
(i.e., immediately after the driver is installed), the
highest number will be assigned to that RPC-1. Each
subsequent time the computer is started up, the card will
be assigned a number in the order in which it was
detected.
Slave
Word Clock
Slave
Master
Slave
R-BUS
R-BUS
Slave
Slave
Clock Cable
Master
Slave
R-BUS
R-BUS
