NAI’s 73SD4 is a DSP-based, PC104-compliant Synchro/Resolver Measurement Board with six separate, isolated channels. These channels can incorporate up to six Synchro/Resolver-to-Digital Tracking Converters in a stack-through module. Each channel also produces differential incremental encoder (A & B) outputs (with programmable resolution) and a zero degree marker pulse. Commutation outputs are available for 4-, 6-, or 8-pole brushless DC motors that eliminate the need for Hall Effect sensors, thereby reducing both processor time and bus traffic.
Standard features include 16 TTL Digital I/O, Background Built-in-Test (BIT) for continuous checking and reporting on the health of each channel, extensive diagnostics, and digital velocity outputs. Specifically designed for rugged defense, industrial, and commercial applications, the 73SD4 supports optional reference and turn counters. Requires forced air cooling.