Fluke Biomedical 960CD-220 - Manual (Page 5)

Introduction
General Description
1
1-1
Section 1
Introduction
1.1 General Description
The 960CD-220 series Controller Modules are the intelligent controlling modules designed for use in
Victoreen's 960 Digital Radiation Monitoring System. There are four different modules included in the
960CD-220 series. All are built on the same processed circuit board. Differences include a
communications option and the related components installed on the module.
Components
The 960CD-220 Controller Module is a self-contained microcomputer on a single printed circuit board.
The module contains the following components.
Motorola MC6809 microprocessor
32K x 8 EPROM
24K x 8 static RAM
Two serial asynchronous communication links with switch selectable baud rates
Optional RS-232, isolated fiber optics transmit or receive communications
Memory protection with battery backup static RAM (battery included on the module)
Buffered 8 bit data bus
Buffered 16 bit address bus
16 Decoded device selects
64 Channel identification codes
6 Digit, seven-segment display driver
The modules are rated for nuclear safety-related applications. They are assembled using techniques and
parts selected for the reliability required in a nuclear application. Any non-Victoreen repairs made to the
modules will void their safety-related rating. These modules must be returned to the factory for
authorized, qualified (ANSI 45.2.6. 1978, Skill Level II) service.