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output use according to direction assignment from a control register in the PPI. Further, if a jumper is
properly placed on the card, the tristate buffers may be enabled/disabled under program control. (See the
Option Selection section to follow.)
I/O wiring connections for the H card are via a 50-pin connector on the back plate of the card. Flat
insulation-displacement ribbon cables can be used to connect these cards to termination panels and relay
output cards. Also, the 50-pin connection provides compatibility with OPTO-22, Gordos, Potter &
Brumfield and Western Reserve Controls module mounting racks. Fused +5 VDC power is available on
the I/O connector at pin 49. The on-board fuse is rated at 0.5A at room temperature, and can be reset by
cycling computer power, or by removing the load.
I/O wiring connections for the D card are via a 37-pin D-sub connector on the back plate of the card. A
37-pin D-sub solder cup mating connector, or flat insulation-displacement ribbon cable can be used to
connect these cards to termination panels. The "D" version has a fused 5 volts available at connector pin
20. The on-board fuse is rated at 0.5A, and can be reset the same as the H version.
Manual PCI-DIO-24DH
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