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Architecture · OEM and industrial systems

Ethernet-ready spectrometers

A spectrometer inside a production instrument has different requirements from one connected to a laptop. It must acquire reliably, respond to triggers, hold data while the host is busy and fit the control architecture of the larger system. Ethernet-ready configurations combine Gigabit Ethernet with onboard memory, ring-buffer and batch acquisition, near-zero trigger latency and a hardware reset line.

Acquisition path

Trigger, onboard memory, then the network

t₀t₁ TRIGGER IN
Hardware trigger
ONBOARD RING BUFFER
Spectrometer + memory
HOST /PLC SPECTRO GIGABIT ETHERNET
Equipment network

Interface

Gigabit Ethernet for equipment integration

USB remains the appropriate interface for many laboratory systems. In OEM and industrial equipment, Ethernet provides longer cable runs, a cleaner equipment-network architecture, separation between the spectrometer and the host, and an integration pattern that controls and IT teams already support. The interface alone does not solve acquisition, however. A fast interface still requires a measurement architecture that captures the right spectra at the right time.

  • Gigabit Ethernet for equipment-style communication and long cable runs
  • Onboard memory that decouples exposure timing from host-transfer timing
  • Ring-buffer acquisition for long-duration streaming workflows
  • Batch acquisition for gap-free sequences followed by a controlled transfer
  • Hardware reset as a practical recovery path in an installed system

Acquisition modes

Ring-buffer and batch acquisition

Ring-buffer acquisition uses circular onboard memory so capture continues through a long run; new spectra reuse memory in a controlled way and the record stays continuous regardless of host activity. Batch acquisition is for a fixed number of consecutive spectra with no inter-spectrum gap: the spectrometer collects the sequence internally and then transfers selected frames, the full set or an average. In both cases the timing of the measurement no longer depends on operating-system behavior or host-side data handling.

Trigger latency

Near-zero trigger latency for synchronized measurements

For synchronized measurements the delay between an external event and the start of acquisition is part of the specification. Near-zero trigger latency modes are for measurements where the spectrometer has to respond predictably to a hardware edge, a source pulse, a moving sample or a tool state, as in semiconductor tools, pulsed sources, lamp synchronization and time-sequenced process measurements. The figure describes the trigger response of the spectrometer itself. The response of the complete networked instrument is a system-level value determined by the integration.

Applications

Spectrometers designed as instrument components

Ethernet-ready SmartEngine and HummingBird configurations suit compact OEM systems that need configurable UV-Vis-NIR performance. Ethernet-ready high-resolution and NIR configurations support optical metrology, process monitoring and automated test stations where data architecture and timing are part of the design. In each case, optics, electronics, triggering, buffering and memory are specified together by the engineers who designed the bench.

  • Semiconductor light-source monitoring and optical metrology
  • Automated test stands and production QA stations
  • Long-duration process and environmental monitoring
  • Pulsed or externally triggered measurement systems
  • OEM instruments where the host controls the experiment and the spectrometer manages its own acquisition

FAQ

Frequently asked questions

Is Ethernet meant to replace USB in every use case?
No. USB remains convenient for many systems. Ethernet is the better choice when cable length, controls architecture, instrument integration, throughput or serviceability are design requirements.
What is the difference between batch and ring-buffer acquisition?
Batch acquisition captures a defined sequence of spectra with no gaps and then transfers it; ring-buffer acquisition supports continuous capture using circular memory. Both preserve acquisition timing when the host cannot keep pace with the measurement.
Can Ethernet-ready configurations support OEM integration?
Yes. They are intended for OEM and industrial architectures that need communication, triggering, buffering and software integration to work together, with the same SDK as the USB benches.

Next step

Discuss an Ethernet-ready configuration with an engineer

Send the acquisition timing, the trigger source, the run length and the control architecture. An engineer will recommend a configuration, including the cases where USB remains the better interface.