Master Timebase and Reference Clock Sharing

Certain types of NI-DAQmx-supported devices support master timebase or reference clock sharing between multiple devices, which is similar to trigger and sample clock sharing. For example, E series devices can share master timebases, and M series devices can share reference clock signals.

Timebase settings appear on the Advanced Timing page of the Step Setup tab for DAQmx Acquire and DAQmx Generate steps. To share a master timebase or reference clock between two devices, navigate to the Step Setup tab for the DAQmx Acquire or DAQmx Generate step for one of the devices and select External from the Master Timebase or Reference Clock pull-down menu. Select the device you want to use as the source from the Master Timebase Source or Reference Clock Source pull-down menu. If you are sharing a timebase or reference clock among more than two devices, be sure to always pick the same device as the timebase or clock source.