White Rabbit Z16
The WR-Z16 is the reliable & precise time fan-out solution for White Rabbit (basis for the new IEEE-1588-2019 High Accuracy Default profile) distribution on 1G Ethernet-based networks. It is a standalone device with 16 SFP connectors which provides sub-nanosecond accuracy time over plug-and-play optical fiber links. The WR-Z16 provides very precise IEEE 1588-2008 (PTP) in all its optical interfaces and supports NTP interoperability. Picosecond-level frequency distribution is available through a fully digital clock. The WR-Z16 incorporates failover mechanisms which combine multi-source redundancy and holdover capabilities to ensure continuous operation, provides precise timing sources monitoring. The new Low Jitter version of the WR-Z family products is now available! This new Low Jitter (LJ) capability, enabled in the new hardware version of the WR-Z products, includes improved design in order to provide better stability in the timing outputs of the system, especially for the frequency signals, as it can be seen in the corresponding datasheet.
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High Accuracy
The WR-Z16 implements the White-Rabbit (WR) protocol, an high-accuracy extension of PTP based on SyncE, that allows to easily distribute sub-nanoseconds timing within Metro Area Network distances and beyond. Worth to mention, that a timing network using WR protocol is not affected by the traffic load nor the number of hops.
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Interoperability
Placed at the top of the rack the WR-Z16 can distribute standard PTP IEEE 1588-2008 for the last hop through its 16x fiber ports using the most common profiles such as Telecoms profiles (G.8265.1, G.8275.1) & Power profiles (IEEE C37.238-2011 and IEEE/IEC 61850-9-3). It also provides NTP interoperability and 10MHz/PPS distribution.
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Resiliency of Time & Frequency
To ensure continuous operation the WR-Z16 incorporates a failover mechanism. It provides a safer version of the “Best-Master-Clock” algorithm as it only allows switching over multiple (predetermined) timing sources when a failure is detected. Additionally, an optional Holdover oscillator can be included to maintain high accuracy (1.5us < 24h) even if all timing references are down.
Features
- Sub-nanosecond time accuracy
- 16 optical timing ports for WR, PTPv2 and NTP
- Multi-source time references
- Designed for Metro Area Network distances and beyond
- Datacenter Optimized design
- Failover & Holdover capabilities
- Extended monitoring and management
- Redundant swappable power supply & fans
- Low jitter/phase noise frequency dissemination
- Precise timing sources monitoring capability
Specs
- Size: 431 x 44 x 330 mm
- Environmental Conditions
- Temperature: -10ºC ~ +50ºC
- Humidity: 0% ~ 90% RH
Timing
- Multi-sources
- Failover mechanism to ensure continuous operation by switching over several timing sources in case of failure
- White Rabbit (accuracy <1ns)
- External references (GNSS, Atomic Clocks)
- PTP IEEE 1588-2008
- Default
- G.8265.1
- G.8275.1
- IEEE C37.238-2011
- IEEE/IEC 61850-9-3
- NTP v2, v3 & v4
- Holdover (optional)
- Accuracy (learning 3 days from GNSS)
- < 100ns @ 4h
- < 500ns @ 8h
- < 1.5us @ 24h
- Accuracy (learning 3 days from GNSS)
- Holdover (optional)
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