Measurement Computing PC104-PDISO8 - Manual (Page 12)

4 ELECTRONICS AND INTERFACING
This short introduction to the electronics most often needed by digital I/O board users
covers the following:
O
Connector diagram.
O
FORM C relay outputs.
O
FORM A relay outputs.
O
Isolated inputs.
O
Adding a resistor to expand the range of the isolated inputs.
4.1 I/O CONNECTOR
The PC104-PDISO8 use a single 40-pin connector. The pin-outs of the connector are
shown in Figure 4-1. This connector can be converted to a 37 pin connector that is
compatible with the CIO-PDISO8 through the use of an adapter such as the BP40-37
(Figure 4-2).
Figure 4-1. I/O Connector Pin Out
WARNING
High voltages will be present on the board when connected to high
voltage inputs or outputs. Use extreme caution! Never handle the
board when live signals are connected to the board.
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