We are integrating a 75C2 Multifunction I/O 3U cPCI card with high voltage synchro (90 VLL / 115 VREF) into a system. Are there special requirements necessary to handle the high voltage I/O?

There are no special ‘requirements' for interfacing high voltage I/O to any of the specifically capable platforms/modules. However, the system integrator must be cognizant that some of the NAI Multifunction module choices are specifically designed to interface to high voltage sensors and be familiar with the overall signal layout and path. For example, 90VLL / 115 VREF synchro signals are common in a synchro position feedback system. The 75C2 card, as well as NAI’s other cPCI and VME common platforms, do have the high voltage signal capability and are fully tested and qualified within many test and embedded systems. Although the card(s) themselves are designed within proper guidelines, specification and design considerations, it is suggested that the end integrator be aware and confirm that all other system considerations (e.g. backplane/s and other wiring considerations) follow proper inter-pin and trace clearance guidelines as the card(s) may be configured with adjacent pins carrying high voltage signals. Also, the system integrator should be mindful of any specific operational environmental considerations. For example, high humidity operating conditions may influence the high voltage consideration system guidelines. If identified, system level adjacent high voltage signal interfacing concerns may be mitigated by system re-configuration(s), conformal coating options and other methods once identified.