ALOHA Cabled Observatory

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Observatory Controller

Rabbit RCM3000® Microprocessor Controller:

The heart of the Observatory's control system is the Rabbit® RCM3000 series Ethernet 10BaseT microprocessor control module.  The Rabbit® RCM3000 utilizes a Rabbit® 3000, 29.4Mhz microprocessor with 512K Flash, and 512K of SRAM.  With custom programming developed by ESF personnel the module is able to monitor current draw and bandwidth allocation for individual user ports, DC-DC converter temperature, and timing adjustment for IRIG B timing.

There are a total of six Rabbit RCM3000 microprocessor control modules.  Two RCM3000s monitor current and control current trip points of the low voltage 48v, DC-DC converters.  The redundant RCM3000 controllers provide fault tolerance.  Two RCM3000s monitor current and control current trip points for the high voltage 48v-400v converters.  Two RCM3000s monitor and adjust timing from a PC/104-SG® timing card.

One RabbitLink® EG2110  provides programming via a network or the Internet.

Rabbit® Core Module RCM3000

Page Last Modified 08/10/2007