Precise synchronization in nanoseconds

Ten years of experience in time synchronization according to IEEE 1588

Modern, distributed test and measurement systems can be optimally implemented with time-controlled measurement and test steps. Conventional trigger lines are increasingly reaching their physical limits (runtime) and have to be compensated for at great expense. Here you can rely on our many years of expertise in IEEE 1588.

Investigation of the impact of non-deterministic network effects on PTP time synchronization with varying traffic volumes

TSEP THEMIS supports the IEEE 1588 standard

Different cable lengths and complex synchronization processes make precise measurements difficult and increase the susceptibility to errors. Without a uniform, synchronized time base, measurement data cannot be used reliably for analyses and simulations.

Correlatable time stamps:
In today’s measuring systems, it is no longer just a few few values are recorded by a few sensors, but a large number of different measured values. This data is used , for example, for analysis (offline evaluation) or to create simulations (digital twin). In order to correlate these measured values effectively, a uniform and synchronized time base is essential throughout the entire measurement system.
Time-controlled trigger
Classic measuring systems use trigger signals to trigger or synchronize measurements. With linked trigger signals or widely varying cable lengths of the trigger lines , the effort involved increases considerably. Time-controlled trigger signals make it possible to decouple cable lengths and complex sequence controls, such as for a measurement that is necessary with the aid of a frequency sweep.
Synchronization of measuring devices
Various reference frequencies (e.g. 10 MHz, 100 MHz) are currently used to synchronize measuring devices. However, this approach only allows a limited synchronization of the measurements, as the synchronization only refers to the signal change (edges). Exact temporal synchronization cannot be achieved in this way; the measuring devices have a temporal offset that can only be determined (calibrated) by measurement and are subject to fluctuations during the measurement.

Integrated solutions based on global standards

THEMIS CHRONOS offers innovative solutions to meet these challenges, which are based on established global standards and enable precise time synchronization.

Digital time synchronization:
With the IEEE 1588 Precision Time Protocol (PTP) standard, THEMIS, measured values from the Themiscards with a precise time stamp of +/- 40ns – across all Themis devices used in the measuring system. devices used in the measuring system. This creates a uniform time base, which is essential for correlatable measured values.
Time-controlled trigger
With the help of the optional Chronos component and the IEEE 1588 Ptp and the IEEE 1588 Ptp standard, Themis offers the option of time-controlled measurements in the Themis cards. Measuring components that do not offer such functionality with the aid of the IEEE 1588 standard, can be retrofitted with this functionality using the Themis 1588 multiplexer. The accuracy achieved here is in the +/- 40 ns range.
Standardized control:
The extended metrological possibilities of Themis are based on on established standards such as IEEE 1588 and White Rabbit. For the configuration and management of time-synchronized triggers and timestamps, the “Trigger and Sync API” standard developed by the IVIconsortium standard “Trigger and Sync API“. This means that devices from other manufacturers, that support these standards can be seamlessly integrated into Themis measurement systems. This makes Themis a long-term and expandable investment.

Highly accurate time synchronization

For applications that require even greater precision, THEMIS offers the optional ATHENA component, which is based on the White Rabbit standard – a technology originally developed by CERN for high-precision timing applications. This allows various Themis devices to be synchronized in the picosecond range. With the THEMIS ATHENA reference signal extender, devices from other manufacturers can also be integrated into the time-synchronized measurement system. This option is expected to be available at the end of 2025 and will open up new possibilities for the most demanding measurement technology applications.

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