PCIe time cards, rack-mount appliances, sub-nanosecond fibre. Every TimeBeat product is open-standard, OCP-aligned, and built for the networks that cannot afford to drift — even by a microsecond.
Order online instantly at store.timebeat.app — or request a custom quote for volume.
< 50 ns
to UTC
6
form factors
100%
open standards
Why open
We build to open standards: the OCP Time Appliance Project, IEEE 1588v2 and White Rabbit. The hardware itself is open and accessible — no mystery silicon, standard interfaces, and the freedom to run your own applications alongside our timing stack. Every protocol is public and auditable, there is no lock-in, and every card you buy keeps working long after the vendor relationship ends.
Choose your form factor
Pick the layer that fits your network. They’re all open, all interoperable, and they all sync to the same nanosecond.
Sync starts at the silicon
Drop straight into a server. Multi-band GNSS, DOCXO or Rubidium holdover, and a full PTP/NTP/SyncE stack on a single card.
Rack-mount and portable grandmasters
Fully-integrated chassis with anti-jam / anti-spoof GNSS and Rubidium Black+ holdover. Up to three appliances per 1RU.
Sub-nanosecond deterministic timing
CERN-derived White Rabbit for edge and OEM integration — under one nanosecond accuracy, 24.67 ps RMS jitter on the mezzanine.
The full lineup
At a glance
| Product | Best for | Accuracy | Deploys as | GNSS holdover | |
|---|---|---|---|---|---|
Open TimeCard Modular PCIe grandmaster with DOCXO or Rubidium holdover | NTP/PTP server · data centre sync | < 30 ns to UTC | PCIe card in existing server | DOCXO std · Rb upgrade | |
 Open TimeCard Mini V3 Compact all-in-one PCIe time sync solution | Edge nodes · Broadcast and Private 5G | < 30 ns to UTC | PCIe card — CM5 carrier | Integrated OCXO | |
Open Time Appliance Grandmaster clock platform — up to 3 units per 1RU | Rack grandmaster · telecom · finance · Enterprise | < 30 ns to UTC | 1U rack · 3 per chassis | DOCXO std · Rb Black+ upgrade | |
 Open Time Appliance Mini Portable grandmaster — sync, test, validate anywhere | Portable grandmaster · field testing | < 30 ns to UTC | Desktop / portable | DOCXO holdover | |
Open Time Node WR Sub-nanosecond White Rabbit timing node | Defence · GNSS-denied · campus fibre · Finance | < 1 ns | 1U rack · up to 3 per chassis | Fibre sync — no GNSS needed | |
 White Rabbit Mezzanine OEM timing module — sub-nanosecond sync for integrators | OEM integration · custom builds · Defence | 24.67 ps RMS jitter | OEM mezzanine board | Fibre sync — no GNSS needed |
Open TimeCard
Modular PCIe grandmaster with DOCXO or Rubidium holdover
Open TimeCard Mini V3
Compact all-in-one PCIe time sync solution
Open Time Appliance
Grandmaster clock platform — up to 3 units per 1RU
Open Time Appliance Mini
Portable grandmaster — sync, test, validate anywhere
Open Time Node WR
Sub-nanosecond White Rabbit timing node
White Rabbit Mezzanine
OEM timing module — sub-nanosecond sync for integrators
Featured
Dual GNSS receivers, oven-controlled holdover oscillator, 10/25/100 GbE ports, and PTP/NTP grandmaster — in a single rack unit. Drop it in, point your network at it, and forget timing exists.
1U
Rack height
Dual GNSS
Redundant
100 GbE
Line speed
500ns/24h
Holdover
Also available
How to choose
Three quick questions narrow it down to the right hardware in under a minute.
Q1
Inside an existing server? → Time card. Standalone in the rack? → Server or Appliance. Across a fibre plant? → White Rabbit.
Q2
Under 50ns to UTC is standard with PTP. Sub-nanosecond means White Rabbit. Anything looser, an NTP-only stack is fine.
Q3
Need 1h holdover? The DOCXO is enough. 500 ns over 24 h? Look at the rubidium option on the Open Time Appliance.
Still not sure?
Talk to an engineerConfigure your deployment
Tell us how many units, where they’re going, and what you’re trying to sync. We’ll come back with pricing, lead times, and a technical recommendation within one business day.
Library
Product sheets, oscillator selection, TCO models and the engineering guides for deploying grandmaster and timecard hardware in production.
What a PTP grandmaster clock actually does, how to choose one, and what separates a grandmaster you can trust from one that quietly drifts. Written by TimeBeat's engineering team for network architects deploying IEEE 1588 in production.
Secure, resilient timing for mission-critical communications, radar, UAVs and C4ISR.
For most of computing, millisecond-class clock synchronisation is fine. For a growing list of use cases — finance, broadcast, 5G, AI, distributed databases — it isn't. A field guide to recognising when your application has crossed the line and millisecond-grade time has become a liability.
Why a single-grandmaster deployment is a DORA Article 11 problem, what A/B/C redundancy looks like in a single rack unit, and how the Open Time Appliance Shelf turns three independent Rubidium Black+ grandmasters — with independent GNSS antennas — into the default finance-venue topology for 2026 and beyond.
An engineering decision framework for picking oscillator tier on an Open Time Appliance. Drift maths that matter, real-world holdover scenarios, and where each tier is the right economic answer — not just the best spec sheet.
How the Timebeat Agent fuses GNSS, upstream PTP feeds, PPS inputs and oscillator discipline into a single weighted clock output — the same BIPM-style ensemble approach used to produce UTC itself, applied at the site level.
Sub-nanosecond when you need it
CERN-derived sub-nanosecond fibre sync — for when 50ns is still too much drift.
Explore White Rabbit →