OEM timing module — sub-nanosecond White Rabbit sync for system integrators.
24.67 ps
RMS jitter (std dev)
200.2 ps
Peak-to-peak spread
Up to 4
SFP cages (carrier)
Sub-ns
Sync accuracy
Measured. Verified. Published.
24.67 ps RMS jitter across 61,816 sampled periods. As clean as it gets outside a metrology lab.
24.67 ps
RMS jitter (std dev)
200.2 ps
Peak-to-peak spread
26.77 ps
Gaussian-fit sigma
61,816
Sample count
OEM-first design
What it is
The White Rabbit Mezzanine is an OEM-focused timing module for integrators who need to embed deterministic, phase-aligned timing into distributed systems. It can drive up to four SFP cages on the host's carrier board, alongside low-jitter local outputs and host-accessible telemetry, to extend and distribute ultra-precise synchronisation across complex environments — and plugs into host systems via a 30-pin × 4-row GPIO connector with USB-C management.
I/O summary
Up to four WR ports. Eight coax outputs. A calibration port, USB-C management, and a 30-pin GPIO bus for host integration — all on the same footprint.
WR / SFP ports
Up to 4 (on carrier)
1 PPS outputs
4 × COAX (A1–A4)
10 MHz outputs
4 × COAX (A1–A4)
1 PPS input
1 × COAX
10 MHz input
1 × COAX
Calibration port
1 × COAX
Management
USB-C
Host interface
30-pin × 4-row GPIO
All the I/O you need. Ready to integrate.
Tell us your host platform and integration requirements — we'll confirm fit, pricing and lead time within one business day.
Capabilities
The mezzanine carries no SFP cages itself — it supplies the White Rabbit signalling to drive up to four SFP ports on the host’s carrier board, so integrators can fan out multi-node sync with the connector layout their system needs.
24.67 ps RMS jitter (std dev), 200.2 ps peak-to-peak spread across 61,816 sampled periods. A Gaussian-fit sigma of 26.77 ps is as clean as it gets outside of a metrology lab.
Four phase-locked 1 PPS outputs and four 10 MHz outputs (all COAX), plus 10 MHz and 1 PPS inputs from an upstream grandmaster and a dedicated calibration / measurement port.
Compact integration footprint with all interfaces mapped to a GPIO connector. The module snaps into a host carrier board without custom enclosures or bespoke cabling.
Lock status, monitoring and diagnostics exposed to the host via I2C and USB-C — integrate WR state into whatever system management stack the host already runs.
The full WR / PTP protocol stack with sub-nanosecond accuracy. Slot it into any project that needs metrology-grade sync without building a timing team.
The OEM mezzanine ships with TimeBeat's jitter attenuation engine integrated into the firmware. For system integrators embedding the mezzanine into their own platforms, the attenuation layer is available via the host API — no additional software integration required.
Specifications
Jitter performance
Timing I/O
WR network
Power & interface
Where it works
Use case 01
Embed sub-nanosecond WR sync into your own appliance without designing a timing subsystem from scratch. Plug in, wire up, ship.
Use case 02
Dedicated calibration port and lab-grade jitter make it the natural choice for reference chains and measurement bench builds.
Use case 03
Phase-align multi-channel data acquisition across racks and rooms — four SFP ports let one module serve a full DAQ fan-out.
Use case 04
WR was born at CERN. The Mezzanine brings the same protocol into smaller research installations that can't justify a full WR rack.
Free download
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In your network
Sub-nanosecond OEM timing module · 24.67 ps RMS jitter · SFP+ fibre interface
Watch the demo
OEM integration walkthrough, WR network setup and first measurement.
Lab-measured 24.67 ps RMS jitter in an OEM mezzanine module — four WR SFP ports, four phase-locked 1PPS+10MHz pairs, GPIO host interface, dedicated calibration port.
Standards & compliance
Get pricing
Tell us your host platform, integration requirements and quantity. We’ll respond with pricing and a technical fit assessment within one business day.
Library
OEM integration guides, White Rabbit protocol docs and engineering resources.
White Rabbit — the sub-nanosecond fibre-distributed timing protocol developed at CERN — is moving out of physics labs and into financial trading floors, AI training clusters and quantum networking testbeds. What it actually does, and why precision below one nanosecond is now a commercial requirement.
