Five Minute Facts About Packet Timing By Andreja Jarc. Those of you who know Meinberg may have noticed that Meinberg typically does not talk about licenses. The reason for this is, that Meinberg, in most cases, does not charge you extra for enabling specific features or functions. With our free lifetime support and firmware update […]
What’s in the 2019 edition of IEEE 1588: Performance Monitoring
Five Minute Facts About Packet Timing By Doug Arnold Every implementation of PTP includes some information about the state and performance of the device. So in principle a monitoring node could gather all the data and determine the health of the PTP network. Here’s the rub: If you’re the poor soul who is writing the code […]
What’s in the 2019 edition of IEEE 1588: Profile isolation
Five Minute Facts About Packet Timing Next in the series on What is in the 2019 edition of IEEE 1588 is profile isolation. And while we are looking at that we will take a peak at the PTP common message header, the part of PTP message which has the same structure regardless of which PTP […]
Use Cases for Timing in Power Grids
Five Minute Facts About Packet Timing By Andreja Jarc. Evolution of Grids The power grid has been operating for a long time, long before data networks and ethernet systems were popular. It is one of the world’s largest infrastructures and also one of the most robust one. Therefore, one might ask, why are we not […]
What’s in the 2019 edition of 1588: Slave port monitoring
Five Minute Facts About Packet Timing By Doug Arnold Next in the series on What is in the 2019 edition of IEEE 1588 is slave port monitoring, also known as slave event monitoring. Sometimes it is not enough to transfer time accurately from a PTP Grandmaster (GM) to a PTP Slave (slave). Sometimes you also […]
PTP Timescale (and what the heck is Arb time?)
Five Minute Facts About Packet Timing By Doug Arnold Most application which use PTP to distribute time, don’t actually need standard time, as understood by national laboratories. All that is needed is for the clocks in a network to have the same time. However, there are several reasons to use a standard timescale when distributing […]
What’s in the IEEE 1588 revision: Interdomain interactions
Five Minute Facts About Packet Timing By Doug Arnold The next installment in what’s in the revision of IEEE 1588 discusses PTP domains Before we get started. A quick review on domains. Every PTP message contains a domain number. A PTP instance is configured to work in one, and only one, domain. It is required […]
PTP Telecom Profile in Power Grids
Five Minute Facts About Packet Timing By Andreja Jarc. Synchronization in Power Networks There are a few different timing technologies which are used for synchronization in power grids. Traditional power systems use IRIG-B which can deliver from 1 us to a few micro seconds accuracy, depending on whether you are using the TTL or AM […]
What’s in the 2019 edition of IEEE 1588: Mixed Multicast Unicast Operation
Five Minute Facts About Packet Timing By Doug Arnold The next installment in what’s in the revision of IEEE 1588 discusses mixed multicast-unicast operation. In a previous post I described the virtues of mixed multicast-unicast operation in PTP. Sometimes this is referred to as the “hybrid mode”. I summarize the conclusion here, but if you […]
HSR and PRP: redundant Layer 2 networks
Five Minute Facts About Packet Timing By Doug Arnold If are looking into network technologies for power substations, or industrial automation you may run across HSR and/or PRP. So here is the five-minute version of what these things are. First of all, both HSR and PRP are layer s network protocols, which have include the […]