Introduction to PTP and its Relevance for Industrial Systems

The Precision Time Protocol (PTP), defined by IEEE1588, is a crucial component of the GigE Vision Standard 2.0. It enables precise synchronization across multiple devices within an Ethernet network, making it especially valuable for large industrial inspection systems. SVS-Vistek has integrated PTP into its EXO series through the GenICam tree and flexible 4I/O model, simplifying deployment and management.

Understanding PTP in GigE Vision

The Precision Time Protocol (PTP) serves as a standardized method to synchronize time across devices connected via Ethernet. In SVS-Vistek’s EXO models, typical clock deviations are approximately 10 µs. For synchronization within a subnetwork, one device must act as the master, while others function as slaves, aligning their clocks with the master.

However, to achieve precise alignment with standard time (such as Coordinated Universal Time), an external reference like NTP (Network Time Protocol) or a GPS receiver should be designated as the master device. The integration of PTP within GenICam not only streamlines its operation but also expands functionality beyond basic standards through flexible control models.

Key Advantages Provided by PTP

PTP ensures all cameras in an Ethernet network share a common time reference, enabling coordinated actions and simplifying complex workflows:

  • Accurate Timestamping: With synchronized timestamps across devices, users can precisely determine the exposure time of images relative to scheduled events or other camera captures.
  • Synchronous Control: PTP allows multiple cameras to trigger simultaneously or initiate scheduled tasks in unison, enhancing coordination efficiency.
  • Streamlined System Design: Especially in intricate multi-camera setups, PTP reduces integration complexity and lowers implementation costs by minimizing timing discrepancies between devices.

Simplified Integration with EXO Models

SVS-Vistek’s GigE Vision-enabled EXO models support both master and slave operational modes for PTP, along with timed action commands. Even existing legacy EXO systems can benefit from these features via a firmware update—check the downloads section for compatibility details.

Last Updated: 2025-09-05 03:09:47