Data Acquisition (DAQ) and Control from Microstar Laboratories

Input Triggering Technology

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System Architecture


DAP Architecture





Input Overview


Single-Sample Clocking


Channel List Clocking





Overview of DAP Input Triggering and Clocking

DAP sampling hardware provides three triggering modes and two sampling modes. They can be used in any combination. All triggering and sampling modes are specified in a downloaded DAPL configuration script.

data acquisition board

Evaluating a DAP – like the DAP 5380a – and need more information? You can download the hardware manual from the document download section to get full details.

  • Triggering determines when sampling begins, and, depending on the mode, when sampling ends.
  • Burst control determines whether a triggering process is reinitialized after each triggering action.
  • Sampling determines the instants at which signals are captured for digitization.

When a digital signal is not available for hardware triggering, and in some situations even when such a signal is available, software triggering provides an alternative with more flexibility.

There are three triggering modes:

data acquisition design software

Set up your triggering and timing commands using DAPstudio software.

After sampling starts, samples are captured on each active-high pulse of the digital sampling clock. The clocking signal is selected by the CLOCKING configuration. There are two clocking modes:

  • INTERNAL. The default configuration. Sampling is driven by an adjustable digital clocking signal derived from the precision onboard oscillator.
  • EXTERNAL. Sampling is driven by a dedicated external digital clocking line.

The two sampling modes are: