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Optional Counter/Timers
These cards have options to include one, two, or three 82C54 counter(s) that each include three 16-bit 
counter/timers factory configured in an optimal module for use as event counters, frequency output, pulse 
width, and frequency measurement. See the Block Diagram which shows one 82C54 counter. If your card 
has one or more of these optional counters, an -S01, -S02, or -S03 is appended to the model number for 
one, two, or three counters respectively. For example, a 24-bit digital input/output card with a 50-pin 
connector and two 82C54 counters is model H-S02. 
 
Note
If you have a model D-S03, then the fused +5V power output is not available. 
 
Manual PCI-DIO-24DH 
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