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Chapter 2: RM3200D System Design
2.1 Principle of Operation
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Multi channel in- and outputs
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Controlling in- and outputs
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Clock generation
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Power supplies
The standard size of the DSP Frame is 19''/6U, for smaller systems 3U height.
Both control desk and DSP Frame use identical controller systems based on the industry-
standard 68k microcontroller.
The whole system is to a large degree built in a modular way. It is configured by the PC
software supplied with the system. The software runs on a standard Windows system
(Windows NT, Windows 95/98). This PC is not necessary for daily operation, since all setup
information is stored in the system itself.
The power for the control desk is supplied from the DSP Frame or a separate power supply
unit with a voltage of 24V.
The RM3200D is ready for operation within 1 second after switching on or restarting.
The mixer can be synchronized using an internal (48 kHz, 44.1 kHz) or an external clock. A
TTL-wordclock, the clock of a digital input or the clock from the MADI input can be used as
external clock. On failure of the external clock (Sync Source 1), the device automatically
switches to the internal quartz or another external clock (Sync Source 2).
Important parameters like the function of the CAN-bus, all distribution voltages, sampling
clocks or the temperature within the device are constantly monitored in the background. If
they exceed the limits given by the manufacturer, an alarm is triggered (LEDs in control desk
and DSP Frame, triggering of a relay, logging of alarms on a PC is possible). The light bulbs
in the control desk are monitored as well. If one of them fails, an alarm is triggered.
The power consumption of the device is small compared to commonly used devices.
Depending on the level of extension, the power consumption is approximately between 30W
and 120W.
Except for the mechanical wear of the input devices (faders, keys), the front panels and the
lamps (bulbs, LEDs), the mixer is maintenancet free. No batteries or hard disks are used.