Version: 1.06 12
2.2. The Cards
Cards are formed of a PCB
mounted in aluminium
enclosure which assures the best
shielding against receiving and
emitting noise (radio emission,
electromagnetic interference, …)
Bare aluminium inside the
enclosure and on the edges
assures a good contact of the
‘ground’ signal of the PCB between
the Card and the Rack.
There are several models of Card:
Power supply
CPU
Communication ports
o Modem
o RS232/RS485
o Ethernet
o …
Input/output
o Digital inputs, outputs
o Analog input 14 bits
o Analog outputs 12 bits
o Combination of
digital/analog I/O
o …
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