High Accuracy, Precise Time Protocol PTP Clock Card
Overcoming network impairments that degrade time
The PTP synchronized SyncPoint® PCIe-1000 synchronizes to a PTP grandmaster, such as a SyncServer, over a network. Networks can introduce arrival time jitter of critical timing packets at the PTP slave, called packet delay variation (PDV). To overcome PDV the PCIe-1000 deploys state-of-the art filtering and servo algorithms, accommodates increased packet exchange rates, and includes a high performance OCXO oscillator as standard. The net result is an extremely accurate clock that is very resilient to network impairments.
The high performance OCXO provides two very valuable functions that contribute to the precise time. The high stability of the OCXO is resilient to time errors caused by PDV, and if the PTP master is not available the SyncPoint® PCIe-1000 will flywheel in holdover and maintain accurate time for an extended period of time.
Measure time accuracy in different topologies
The SyncPoint® PCIe-1000 includes a 1PPS output signal with a convenient BNC connector that is very useful to compare the time on the card to that of the master. This is useful in adjusting the PTP parameters for optimal time transfer accuracy over the network. The 1PPS is also useful to synchronize adjacent network devices or probes that accept a 1PPS input.
Delivering the precise time to Linux Applications
Once synchronized, the SyncPoint® PCIe-1000 provides time to the host machine by either writing the time directly to a host memory location or by responding to requests for time over the PCIe bus. Applications accessing the hosted memory time location can read the time in excess of one million times per second and retrieve monotonically advancing time accurate to 600 nanoseconds or better.
Easy to use in many respects
The low profile SyncPoint® PCIe-1000 with its Gigabit Ethernet interface is readily adaptable to modern networks and servers while also consuming a minimal amount of power. With its x1 PCIe connection the PCIe-1000 fits in a wide variety of server types with a minimal power footprint.
Integration of the PCIe-1000 is very straight forward using the included Linux driver and control interface. The included source code means those using the very latest Linux version can be compatible without having to wait for any proprietary software to be upgraded.
The SyncPoint®; PCIe-1000 is also a perfect combination of accuracy and price. The ultra precise time accuracy the PCIe-1000 is balanced with a cost effective design, which makes it a very viable PTP slave solution for all essential servers needing the most accurate time.