Channel Synchronization in MAX

Updated May 23, 2018

Reported In

Software

  • Measurement & Automation Explorer (MAX)

Driver

  • NI-DAQmx

Issue Details

I want to synchronize multiple channels on multiple cards when makingĀ  measurement with my cDAQ device. I can create a Task in the Measurement & Automation Explorer (MAX) containing multiple channels but will they beĀ  automatically synchronized as well?

Solution

Yes, when you include channels from multiple C Series modules in a task, NI-DAQmx automatically synchronizes the modules. A task can include channels from multiple C Series modules, given the following conditions:
  • All channels in the task must be of the same I/O type. Multiple counter I/O channels are only allowed for Devices That Support Multi-Counter Tasks.
  • If the task includes channels from a mixture of C Series Delta-Sigma devices, you must account for filter delay differences between the devices.
  • The modules must all be in the same NI CompactDAQ chassis or meet the conditions for multichassis device tasks.

Additional Information

In case of C Series Delta-Sigma devices the filter delay may introduce a fixed amount of delay between the cards. This delay is also known as the input delay. Refer to your device specifications for the value.

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