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The 256-Channel Digital Input/Output (I/O) Board provides 128 opto-isolated digital output channels, each with internal output status feedback, as well as 128 opto-isolated digital input channels on a single 6U CompactPCI board. Field-Programmable Gate Arrays (FPGAs) are used to provide access to the digital data over the PCI bus.

Voltage isolation is 2 500 V RMS on the I/O channels and 500 V RMS on the cPCI backplane connectors.

256-Channel Conduction-Cooled Isolated Digital I/O Board
>256-Channel Isolated Digital I/O 6U cPCI Board

Architecture

A set of FPGAs is used to control the 128 output channels and read the 128 input channels. Another FPGA is used to provide the PCI interface. Dual-LED optocouplers on all input and output channels provide voltage isolation, while outputs are driven by high-voltage Darlington transistor arrays.

Block Diagram
Block Diagram of the 256-Channel Isolated Digital I/O 6U cPCI Board

Features
  • wide input range (3 V to 35 V)
  • wide range output (3 V to 35 V)
  • Air-Cooled and Conduction-Cooled versions
  • Commercial, Industrial and Ruggedised grades
  • programmable inputs and outputs
  • high output sink current (up to 300 mA)
  • very high number of digital inputs and digital outputs
  • internal output feedback
  • I/O channel voltage isolation
  • board identification switch
  • DC or AC inputs
  • Front Panel I/O and Backplane I/O versions

Bus Interface PICMG 2.0 (R 3.0) 6U CompactPCI
32 bit, 33 MHz
3,3 V PCI signaling, 5 V tolerant
Digital Outputs 128 Optically Isolated Open Collector Darlington Transistor
Digital Inputs 128 Optically Isolated DC (AC optional on 8 inputs)
Voltage Isolation 2 500 V RMS (on I/O channels)
   500 V (on cPCI backplane connectors)
Power 3,3 V DC at 0,3 A (1 Watt); 5 V at 0,5 A (2,5 Watt)
Input Resistance 5 600 Ohm +/- 5%
MTBF Figures according to MIL-HDBK-217F, Parts Stress Method
Commercial and Industrial Grades Ground Benign, Controlled, 25 C 1 200 000 hours
Ruggedised Grade Ground, Mobile, 45 C
Naval, Sheltered, 40 C
Airborne, Inhabited Cargo, 55 C		 750 000 hours
800 000 hours
650 000 hours
Software Drivers Support for Linux.
VxWorks and others are costed options.
Physical Characteristics
Cooling Type Air-Cooled Conduction-Cooled
Dimensions 233,35 mm x 160 mm 233,35 mm x 160 mm
Mass 340 g +/- 30 g 390 g +/- 30 g
Environmental Specifications
Grade Commercial Industrial Ruggedised
Temperature
- Operating
- Storage		  
0 C to +55 C
-40 C to +85 C		  
-15 C to +75 C
-40 C to +85 C		  
-40 C to + 85 C
-55 C to +125 C
Humidity 0% - 90% 0% - 95% 0% - 95%
Shock 10 g peak for 11 ms 20 g peak for 11 ms 40 g peak for 11 ms
Vibration
- Sine
- Random
2 g (peak) at 10 Hz to 100 Hz
0,04 g²/Hz at 15 Hz to 2 kHz
5 g (peak) at 5 Hz to 2 kHz
0,06 g²/Hz at 15 Hz to 2 kHz
10 g (peak) at 5 Hz to 2 kHz
0,1 g²/Hz at 15 Hz to 2 kHz
Part Designation I/O Cooling Grade
CCII/DIO/CPCI/256C/FP/COM Front Panel Air Commercial
CCII/DIO/CPCI/256C/FP/IND Front Panel Air Industrial
CCII/DIO/CPCI/256C/FP/RGD Front Panel Air Ruggedised
CCII/DIO/CPCI/256C/BP/COM Backplane Air Commercial
CCII/DIO/CPCI/256C/BP/IND Backplane Air Industrial
CCII/DIO/CPCI/256C/BP/RGD Backplane Air Ruggedised
CCII/DIO/CPCI/256C/BP/CC Backplane Conduction Ruggedised

CDIOSS04 Rev. 1.2 2019-09-27
CCII Systems (Pty) Ltd • P.O. Box 171 • Rondebosch 7701 • South Africa • (+27) (0)21 683 5490 • Fax : (+27) (0)21 683 5435 • www.ccii.co.za