Keithley KUSB-3160, Getting Started Manual

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Chapter 1
2
Key Hardware Features
The KUSB-3160 module provides 64 shared digital I/O lines
(grouped in banks of eight) and 32 dedicated digital input lines.
Sixteen of the 32 dedicated digital input lines are capable of
generating an interrupt to the host computer if the value of the line
changes state.
The digital outputs are capable of driving external solid-state relay
modules (sink 12 mA, source 100 k
Ω
pullup). In addition, the board
provides isolated output common from the USB bus to 500 V peak.