Measurement Computing PC104-DO48H - Manual (Page 9)

4.0 HARDWARE INSTALLATION
Turn the power off.
Locate the PC104 expansion bus in your computer.
Push the board firmly down into the expansion bus connector. If it is not seated fully
it may fail to work and could short circuit the PC bus power onto a PC bus signal.
This could damage the motherboard in your PC or the board.
4.1 CABLING
The connector is a standard 50-pin header connector. A cable with mating connectors
(C50FF-#) may be purchased from
Measurement Computing Corporation .
Those familiar with the CIO-DIO##H boards will find the signal levels and pin
assignments are identical with those on the PC104-DO48H.
4.2 SIGNAL CONNECTION
The PC104-DO48H signals are buffered (high output drive) STTL. STTL is an
electronics industry term, short for Schotky Transistor Transistor Logic, which
describes a standard for digital signals which are either near 0V or near 5V.
4.3 CONNECTOR DIAGRAM
The PC104-DO48H connector is a 50-pin header type connector (Figure 4-1). The
signals available are direct connections to a digital buffer chip.
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