Precisometer NexAtom brochure
The complete range, including this product and the other timing platforms. PDF · 4 pages.
Download brochureNexAtom / Universal time tagging
UTT810 Universal Time Tagger
Eight channels. Every event in context.
An enclosed FPGA time tagger for photon counting, coincidence histograms and correlation measurements, with a Windows interface and programmable acquisition.
Precisometer · Exclusive European distributor
NEXATOM / ORIGINAL PRODUCT IMAGE8Input channels
1 psTime-bin width
<10 psManufacturer-stated jitter
4 nsDead time
Built around your measurement
From detector pulses to a clearer picture.
The UTT810 records event arrival times across eight channels and processes time histograms, coincidences and correlations in real time on its FPGA. Work in the Windows GUI, save absolute time tags, or explore an API-based acquisition workflow.
Photon coincidenceQuantum opticsTime-correlated spectroscopyMulti-channel event timing
Published specifications
Manufacturer source Know what you’re specifying.
Timing & acquisition
- Input channels
- 8
- Time-bin width
- 1 psSmallest published histogram bin; not a timing-accuracy or jitter figure.
- Timing jitter
- <10 psManufacturer specification; the public table does not identify an RMS or FWHM convention.
- Dead time
- 4 nsA separate acquisition limit; it does not establish a guaranteed sustained event rate.
- Time-tag recording
- Absolute time tagsGUI and API support for saving event timestamps.
Electrical inputs
- Input range
- 0–5 V
- Input impedance
- 50 Ω
- Threshold range
- 0–2.5 V
- Threshold step
- 1 mV
- Hysteresis
- 1–100 mV
- Physical input delay
- 1 ps–4 nsPublished physical-delay range; confirm the required delay configuration before ordering.
Processing & connectivity
- Processing
- Real-time FPGA
- Time histogram
- 1 ps minimum binMulti-stop support.
- Coincidence histogram
- Up to 8 channels
- Correlation modes
- Linear & multi-tauAuto- and cross-correlation; 8 ns minimum bin.
- Data interface
- USB 3, >300 MB/sManufacturer data-transfer figure; not an event-rate guarantee.
- External clock
- 10 MHz TTLGPIO pin 2; enable Use External Sync in the GUI.
- Desktop software
- Windows GUI + API
- SDK preview
- C / C++ / PythonWindows x64 and Linux x64 packages. Linux hardware validation remains pending in the current public preview.
Published two-channel coincidence measurement≈49 ps FWHM / 20.81 ps RMS
Includes the pulse source and measurement chain. This system-level coincidence width is separate from the 1 ps time-bin setting and the manufacturer’s <10 ps jitter specification.
View the manufacturer’s measurement plotSource information reviewed 24 October 2026. Performance, compatibility, delivery and the supplied configuration are confirmed with your quotation.
Explore the workflow
What will you measure?
Coincidence, correlation and synchronized timing, explained through illustrative signal flows.
Find the events that belong together.
Compare arrival times from multiple detectors to build a coincidence histogram. A natural starting point for photon-pair and quantum-optics experiments.
- Up to 8 input channels
- Multi-fold coincidence histograms
- Absolute time-tag saving
The useful coincidence window depends on the whole measurement chain, including detectors and cables.
Coincidence histogramILLUSTRATION
Detector pulsesArrival-time differencesGUI / API
Keep the details to hand
Resources for your next step.
Time-tagging application note
Signal compatibility, timing budgets and coincidence workflows. Uses UTT810 as the worked instrument; custom-board specifications are separate. PDF · 3 pages.
Download application noteUTT810 Windows software
The current manufacturer installer, installation information and release notes.
Get Windows softwareC / C++ / Python SDK preview
Windows x64 and Linux x64 packages. Linux hardware validation is pending in the public preview.
Explore SDK preview SDK documentationYour European point of contactLet’s configure
Let’s configure
your measurement.
Precisometer is NexAtom’s exclusive European distributor. Tell us about your application, integration needs and budget for a price-competitive quotation.
Confirm detector pulse compatibility, count-rate requirements and software workflow with Precisometer. Customization is discussed with NexAtom for your project.
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