By timebeat.app

Open Timecard

The Open Timecard is a modular PCIe PTP grandmaster clock card for resilient PNT. It distributes NTP, IEEE 1588 PTP, PPS, SyncE and frequency directly from the card, disciplined by a full-constellation multi-band GNSS receiver, with OCXO or Rubidium oscillator options and anti-jam/anti-spoof technology.

Key features

  • Full-height and half-height PCIe slot profiles, modular by design
  • NTP, PTP, PPS, SyncE & frequency distribution direct from the card
  • 1 GbE built-in network port; IEEE 1588 transparent-clock Ethernet switch with SFP
  • 2× Intel i226 with PTM on card, multiple 1588 hardware timestamping registers
  • Onboard Raspberry Pi CM4 running PTP & NTP
  • u-blox LEA-F9T multi-band GNSS (2.5 ns to UTC), full constellation support
  • Frequency output 1 Hz – 1 GHz, plus frequency input
  • OCXO or Rubidium oscillator options; anti-jam & anti-spoof technology
  • Linux operating system; up to 3 units per 1RU with the rack kit

Oscillator options

Option Holdover (24 h) Notes
Rakon ROD2522S2 OCXO ±1.5 µs ±0.5 ppb over temperature, ±0.2 ppb daily aging
Rubidium Black (SA-53) ~0.5 µs ≤5×10-11 at 1 s, 120 mW typical
Rubidium Black+ (SA-55) ~0.2 µs ≤3×10-11 at 1 s, 2-minute warm-up

Applications

Telecom/5G PRTC deployments, financial trading compliance, defence PNT resilient to GNSS threats, and broadcast timing — with clock-ensemble UTC verification for secure, resilient PNT.

Complete the setup

Pair it with our multi-band GNSS antenna (L1/L5) for GNSS reception, browse Open Timecard accessories, or compare the full range of PTP & NTP grandmaster clocks.

Bracket Option: Short
Oscillator Option: Rubidium Black <500ns/24Hrs
£6,634.00
£6,634.00
Typically dispatched within 48 hours

Typically dispatched within 48 hours

Free UK shipping over £500, worldwide delivery

3 month manufacturer warranty on all hardware

Direct support from timing engineers

Volume pricing
5+ units5% off
10+ units10% off
25+ units15% off
Talk to an engineer for a quote or a formal quotation for procurement.

Shipping and delivery

Orders are typically dispatched within 48 hours from the United Kingdom, shipped via Royal Mail or DHL. Other couriers may be used for some destinations. Most products are delivered within 1 to 2 weeks; specialty appliances and pre-order units can take longer, and express shipping is available on certain units on request. Shipping options and costs for your address are shown at checkout.

International customs charges and import duties are the responsibility of the buyer and are not collected by Timebeat.

Warranty

All hardware carries a 3 month manufacturer warranty covering manufacturing defects. Damage caused in use or installation is not covered.

If an item arrives damaged, faulty or not as ordered, contact sales@timebeat.app and we will repair, replace or refund it. Your statutory rights are not affected.

Technical support

Speak directly to the engineers who design and build these products. Documentation, setup guides and the support portal live at support.timebeat.app, and technical questions reach a real engineer at sales@timebeat.app.

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timebeat.appOpen Time Server
Open Time Server — rack-mount PTP/NTP grandmaster time server
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£6,634.00
£6,634.00

Explore in 3D

Open Timecard, from every angle

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COMPLETE THE BUILD Everything this install needs, one click
✓ Open Timecard (this product) £6,634.00
Build total

FROM THE TEAM

USB-C power: holdover survives a server shutdown

I made a video showing one of those small changes that makes a big difference.

With the latest iteration of the Open Timecard, we’ve added something deceptively simple:

🔌 USB-C power input.

(also does serial console and high-speed USB3 data btw... 🙂

Why does that matter?

Because if you’re using an OCXO or atomic clock, you know it can take up to 24 hours to fully stabilize.

Traditionally, if you powered down the server, you’d lose that stability.

Now? You don’t have to.

Just plug in USB-C and keep the card powered—even when the server is off.

✅ Maintain holdover

✅ Avoid oscillator re-warm time

✅ Keep delivering PTP without interruption

Full power resilience, whether it’s on the bench or in a live system.

It’s all about the details—because in precision timing, they matter.

Huge thanks to the Timebeat engineering team for bringing this to life.

Michael Sutton - Ian mentioned you wanted power over USB - delivered! 🙂

#Timebeat #OpenTimeCard #PrecisionTiming #OCXO #AtomicClock #GNSS #HardwareInnovation #TimingMatters #LowLatency #PTP #PowerResilience

View the original post on LinkedIn ↗

Key Features

  • NTP, PTP, PPS, SyncE & Frequency distribution direct from the card
  • 1GbE built-in network port
  • OCXO and Rubidium oscillator options
  • Full multi-band GNSS receiver, full constellation support
  • Frequency Output: 1Hz - 1GHz
  • Frequency input
  • Linux Operating System
  • Anti-jam & Anti-spoof technology

Ethernet switch between modules and host

  • IEEE1588 TC
  • SFP
  • SyncE client/server

PTM

  • 2x Intel i226 with PTM on card
  • SDPs connected to clock gen for diverse syncing options
  • Multiple 1588 hardware timestamping registers
  • Nanosecond accurate system clock sync

Clock generator

  • Programmable outputs- including differential LVDS
  • Low phase noise
  • 8 input for timestamping external events

LFFO oscillator

  • SA53/55 best-in-class Rb (200ns/24hr holdover)
  • Rakon ROD252252 (1.5us/24hr holdover)

GNSS module

  • Ublox LEA-F9T (2.5ns accuracy to UTC)

Open Timecard Specsheet

Add support?

The production workhorse

Drops into any server, disciplines every clock

PCIe grandmaster with USB-C powered holdover — the card that keeps time when the rack loses power.