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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).
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.
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
Master
Word Clock
Slave
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.
Slave
R-BUS
Slave
R-BUS
2. Using the included clock cable to supply the
word clock
Slave
Slave
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.
Clock Cable
Master
R-BUS
Slave
R-BUS
17
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