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1.4 About White Rabbit / High-Accuracy Technology
All the devices running the WRZ- OS provide multiple interoperability options
that include 1PPS/10 MHz signals, standard PTP, and NTP. They support SNMP
v2/v3, rsyslog, and have an integrated web GUI for intuitive management and
enhanced command line tools for advanced users. The following list contains the
different form factors offered within the WR-ZEN family and a brief description
of their main characteristics:
1.4
About White Rabbit / High-Accuracy Technology
One of the key-features of the WR-Z16 family is that it fully supports the White
Rabbit (WR) protocol, an extension of the IEEE 1588 (PTP), to achieve ultra-
accurate sub-nanosecond synchronization in Ethernet-based networks. Since the
publication of the new IEEE 1588-2019 standard, White Rabbit is also known as
"PTP High Accuracy" (HA) profile, and has the following characteristics:
4
WR-ZEN TP-FL: A fundamental, cost-effective 1U form factor version of the
WR-ZEN TP. It has a front dual power supply. It includes 1PPS/10 MHz SMA
outputs and standard PTP interoperability on its management interfaces. It
can include a 4 x 1PPS expansion on demand.
WR-ZEN TP: Standard 1U form factor version of the time provider. It
accepts multiple fans and it has a rear dual power supply. It includes mul-
tiple 1PPS/10 MHz on the SMA or DB9 outputs, standard PTP inter-
operability on its management interfaces, IRIG-B, NMEA and ToD.
WR-ZEN TP-32BNC: Expanded 2U form factor version of the WR-ZEN TP.
It has a front dual power supply. It includes 1PPS/10 MHz SMA outputs and
standard PTP interoperability on its management interfaces. The main char-
acteristic is that it includes 32 BNC ports configured to work as 16 x 1PPS
and 16 x 10 MHz outputs. A configuration with 32 x 1PPS is possible with an
optional PPS expansion license.
Time Precision: WR provides a common clock for physical layer in the
entire network, allowing synchronization at sub-nanosecond level with pico-
seconds precision. In other words, the timing budget consumed by WR is
almost insignificant.
Scalability: WR networks are designed to be highly scalable supporting
thousands of nodes and long-distance links within the range of metro area
deployments. Its performance is not affected by traffic as with other PTP
profiles.
Cost effective solution: WR avoids expensive costs related to calibration
and complex deployments with high requirements of maintenance, allow-
ing plug-and-play links in Local Area Networks (LANs).
CHAPTER
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WR-Z16 User Manual Rev. v5.0
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