Master Timebase Source settings not available for C Series modules in cRIO-9049 (LabVIEW FPGA Interface Mode)

[ansc2767]

Hi everyone,

I am trying to synchronize two C Series modules (NI-9232 and NI-9237) in a cRIO-9049 chassis. According to the NI documentation, it should be possible to configure one module as the master timebase source and share its onboard clock with other modules via the Module Properties → Master Timebase Source settings. Link to source: https://www.ni.com/docs/de-DE/bundle/ni-compactrio/page/configuring-the-master-timebase-source-for-a...

However, in my project I cannot find these options. When I open the Module Properties in the Project Explorer, the dialog only shows:

• Name

• Type

• Location

There are no additional configuration options such as Master Timebase Source, or Export Onboard Clock.

My setup:

• Chassis: cRIO-9049

• Modules: NI-9232, NI-9237

• LabVIEW FPGA Interface Mode enabled

• Software: NI Labview 2025 Q3

Does anyone know why this is happening or how else I could synchronise the modules?

Thanks in advance for any clarification.

[ZYOng · Accepted solution]

You are asking LVFPGA mode but you are actually using DAQmx mode. See Signal-based Synchronization of Analog Input C Series Modules with NI-DAQmx in LabVIEW

To use FPGA mode, you need to add the module under FPGA Target.