page 8 – 3
D-5000 / May 2000
CPU & DSP MODULES
CPU-600
The CPU-600 module is the master control module for the D-5000
Digital Audio Console. By monitoring the various console modules and
serial ports, the CPU-600 controls all of the console audio and logic
functions. Because the system architecture is designed to work by commu-
nicating function and status changes, the D-5000 console is very responsive
and fault tolerant. The console will even continue to pass audio signals with
the CPU-600 module removed; however this module must be present to
change levels or channel assignments.
The CPU-600 has several functions and modes that can be configured by
the user. These are normally set to default values at the factory, and should
not be altered casually.
1. The first function is the console ID address. This function is set using
DIP switches SW-1 - SW-2. This address is used to identify the console
serial interface port so that external devices such as automation systems, the
VDip software, and external controllers will communicate with the console
correctly. Because the D-5000 serial interface port can be configured as an
RS-485 device, and multiple consoles can be connected to the same RS-485
bus, each console needs a unique address to identify it properly on the bus,
ensuring that the right commands get passed to the correct console. The
specific address set is unimportant except that any external controller must
use a matching address to communicate with the console. The address is set
with the DIP switches in binary format (for example with all switches “OFF”
the address is “0”, with the first switch “ON”, the address is “1”, with just
the second switch “ON” the address is “2”, with the first and second switches
“ON” the address is “3” and so on). Consult the section “Internal Program-
ming Options”, page 8-7, for more details. The D-5000 console is normally
configured with an address of “1”. Do not change the console address unless
you are using the console in an RS-485 bus system.
2. The second function is serial interface configuration. DIP switches
SW-6 & SW-7 control the serial interface protocol and termination respec-
tively for the two serial ports on the CPU-600 module. These ports can be
configured as RS-232 or RS-485, and terminated or unterminated via these
DIP switches. Again, the default settings of these switches are for normal
operations and should not be changed unless you are using the console in an
RS-485 bus system. Consult the sections “D-5000 Serial Interface”,
page 8-5, and “Internal Programming Options”, page 8-8, for specific
configurations. SW-3 is also used with the serial interface; by setting it
“ON”, the normal checksum in the serial protocol is disabled. This can be
useful with some external control devices which are not equipped to
generate a checksum in their messages.
3. The third function is nominal audio make-up gain. DIP switch
SW-4 is used to establish the master gain setting for the D-5000 console.
This allows users to configure the nominal fader setting and signal head-
room to suit their specific needs or preferences. The digital audio signals
To Next Page
Loading...