The Model 494.40 I/O Carrier board is a VME board where you can install up to four mezzanine cards. These cards perform a variety of functions, such as transducer conditioning, valve driving, and other I/O functions.
Note: The Model 494.40B board is a new generation release of the 494.40 board that is compatible with the old boards.
Your system hardware-mapping software provides the controller software with the I/O carrier board and individual card addresses. The I/O carrier board includes two RJ-50 frontpanel connectors for each mezzanine card. These connectors route signals to and from the card