The PXI architecture has built-in timing and triggering features that can synchronize multiple devices over a backplane timing bus. Multiple devices in a modular instrumentation system can share a common Reference Clock and synchronize to triggers that are distributed over controlled signal paths that ensure matched propagation. Internal routing of these timing signals in PXI eliminate complicated external wiring. Standardized timing protocols eliminate incompatibilities, giving you the best performance when synchronizing any kind of analog, digital, or timing measurements.