5V/TTL, 32 something bi-directional channels, 7μs c-series digital module-NI-9403 is a configurable digital I/O interface, so that the input or output with dynamic shift function. Each channel has transient isolation between the I/O channel and the backplane. With reconfigurable I/O (Rio) technology (CompactRIO only) , the NI-9403 can be programmed using the LabVIEW FPGA module for custom high-speed counter/timer, digital communication protocols, and Pulse Generation applications. In the COMPACTDAQ chassis, NI-9403 is available only as a static (software-timed) digital I/O module. These modules can not be used for routing timings or triggering signals.