In high accuracy networks the synchronization is often implemented as a combination of multiple technologies for performance, security and strategic reasons mixing new Grandmasters with old Primary Reference Clocks (PRC). As a member of the Qulsar family of synchronization modules the M60 syntonizes multiple sources and transmits and/or receives time, frequency and phase in networks.
One of the innovative features of the M60 is its unique integration in an existing communication path. Its low latency, fully transparent data communication at gigabit speed sets new standards for applying high accuracy time, phase and frequency in large scale networks.
By replacing standard generic parts in already existing designs it is possible to deploy synchronization at virtually no extra costs on the slave side of a modern Ethernet based network. The same M60 hardware can also be used in high efficiency time and phase distribution ports of the Grandmaster on the server side of the network.
In a slave application the M60 module connects to the network transparently and without latency. It leaves existing switches and network nodes (hosts) unmodified. It acts as a true “bump on the wire,” filters out relevant synchronization information and forwards packets at linerate without impairing the traffic.
The clock held by the module can be managed by several external references. Running in autonomous operation it always provides a synthesis of its best available inputs. In the case of the M60 these are:
By this synthesis of different methods, our customers can offer their customer products which are able synchronize to multiple state-of-the-art methods. The synthesis can work both autonomous and managed. The user can offer his customers several options, including turning its management over to the network operator for a remotely controlled synchronization scheme in a secure environment. The critical synchronization dependent quality of service can then be managed centrally by the network operator.
The design philosophy of the M60 is that of making the application of new large network synchronization available and affordable to low cost nodes in the network. This can only be achieved by miniaturizing the technology and making it disappear into other components.
With M60 we have chosen the physical line interface component, the PHY, as this device. This way the M60 can be used by all network capable equipment designers. The PHY has a generic functionality with standardized interfaces since a long time. In fact, the designer can just scratch out the PHY label of the box of the schematic and replace it by M60. The interfaces are the same: power supply, RGMII, and transformer. But in addition the M60 delivers synchronization by means of a syntonized frequency, PPS and ToD signals.
At power up the module reads its on-board .ini files to determine which modes to run and settings needed to comply with the network specification for distribution of synchronization. Using the factory pre-sets the designer interaction is minimized and the inclusion of the synchronization service a zero integration effort.
As PTP Master
As PTP Slave
Input synchronization interfaces
*) deviation from GPS time, depending PPS-input quality
**) with 1 Hz sync and 1 Hz delay request rates
***) depending on master quality and network condition.
ToD Format (both Input and Output)
*) In-system power consumption when running 128 sync messages and 64 delay requests per second. Includes PHY consumption. The processor uses less than 5% of this and requires no extra cooling.
Qulsar may make changes to specifications and product descriptions at any time, without notice.