PC/104-Plus Octal Serial Communication Interface

PC/104-Plus Octal Serial Communication Interface (OSCI)


The OSCI module is a PC104-Plus Card that provides up to 8 free selectable serial interfaces (RS232 or RS485/RS422) to any PC/104-Plus system. The configuration of all ports is done via software and can be changed at any time. All interfaces work with standard baudrates up to 250kBaud. Optional the RS485/422 interfaces are available with up to 6.25Mbaud and 60V fail safe. All serial interfaces are accessible on 2.54mm headers and allow an easy connection to standard serial DSUB-9 connectors.

OSCI Specialities

Technical Features

Serial Interface
RS232 Full modem interface up to 250 kBaud
RS485 2-wire half-duplex interface up to 250 kBaud
optional up to 6.25 Mbaud
RS422 4-wire full-duplex interface up to 250 kBaud
optional up to 6.25 Mbaud
Galvanic isolation on up to two RS485/422 ports until 500Vrms

PC/104-Plus Interface
Host Interface PC/104-Plus compliant
PCI specification revision 2.3 compliant
stack through module
supports both 5.0V and 3.3V signaling
Power Runs with 5V input power only  

Size (length x width x height) 90.2 x 95.9 x 11 mm
3.550 x 3.775 x 0.435 inch
PC/104-Plus compliant
stack through module
Weight 90 g / 0.2 lbs fully equipped OSCI-6MIX-2G
Power +5 VDC ± 5% input over PCI connector
Power consumption Typically 0.7 W OSCI-8MIX
Temperature range -20°C up to 70°C optional -40°C up to +85°C
Humidity 5% - 95% non condensing optional coating available

Operating Systems
  • Microsoft Windows NT 4.0, 2000, XP
  • Linux
  • VxWorks
  • WindowsCE

OSCI Versions

Reference Interface Options
Selectable RS232 or RS485/422 Fix RS232 Fix RS485/422 Galvanic isolated RS485/422
OSCI-8MIX* / OSCI-4MIX* 8/4      
OSCI-8RS2 / OSCI-4RS2   8/4    
OSCI-8RS4 / OSCI-4RS4     8/4  
OSCI-6MIX-2G* / OSCI-3MIX-1G 6/3     2/1
OSCI-6RS2-2G / OSCI-3RS2-1G   6/3   2/1
OSCI-6RS4-2G / OSCI-3RS4-1G     6/3 2/1
Optional: MPL offers following cable kit
OSCI-KIT1 Cable kit for OSCI board (50 pin 2.54mm connector to 4x DB9 connector (23/13cm cable length)

* Available from stock

For customer specific versions, please contact MPL.

Extended Temperature Option

Reference Description
XTEST-1 Extended temperature test, -40°C up to +85°C

For deployment in harsh environments, the OSCI can be ordered in an extended temperature version. Every system needs to pass various tests in a climate chamber to prove that it will perform flawless over the temperature range indicated.

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