– NTP v1, v2, v3, and v4 server support
The GridTime 3000 can receive multiple time signals at once, but will only synchronize to one signal at a time. The
device follows its configured time source hierarchy when deciding which source to use for synchronization.
•
GNSSs
GNSS time synchronization is supported and is recommended for use as the primary reference source for the
device. Any of the following GNSSs can be used simultaneously:
– GPS and QZSS
– GLONASS
– Galileo
– BeiDou
•
IRIG-B
IRIG-B synchronization is supported through either of the IRIG In ports. The following signal formats can be
used:
– 0-5V TTL DCLS IRIG-B004 signals with C37.118.1 extensions
– 0-5V TTL DCLS IRIG-B005 signals with C37.118.1 extensions
•
PTP
Depending on configuration, PTP ports could be either; forced PTP clients or can automatically enter client
mode after synchronization loss. The following PTP profiles can be used:
– IEEE 1588-2008 E2E Default Profile client
– IEEE 1588-2008 P2P Default Profile client
– IEEE C37.238-2011 Power Profile client
– IEEE C37.238-2017 Power Profile client
– IEC/IEEE 61850-9-3 Power Utility Profile client
– ITU-T G.8275.1 Telecom Profile
– ITU-T G.8265.1 Telecom Profile
•
Simple Network Time Protocol (SNTP) client support
– SNTP v1, v2, v3, and v4 client support
2.5
IEC 62439-3:2016 Parallel Redundancy Protocol (PRP)
This section describes the functionality of PRP on the GridTime
™
3000 GNSS Time Server.
The GridTime 3000 supports PTP over Parallel Redundancy Protocol (PRP) on all of its Ethernet timing ports.
This allows a PTP client or server to be identically duplicated across two Ethernet ports on the device as a single
redundant interface. The GridTime 3000 can be configured to operate PRP over Ethernet timing ports 1 and 2,
Ethernet timing ports 3 and 4, Ethernet timing ports 5 and 6, Ethernet timing ports 7 and 8 and, Ethernet timing ports
9 and 10.
Note:
This feature requires a PRP license to activate, and the Ethernet timing ports used must also be activated via
licenses.
Note:
At no time will the GridTime 3000 operate as an Ethernet router, switch, or hub.
2.6
Event Monitoring
This section describes the supported methods for monitoring the GridTime
™
3000 GNSS Time Server’s operational
events.
2.6.1
Notifications
The GridTime 3000 generates a notification when a state change occurs, such as ‘out of sync’ to ‘in sync’, or a
system variable crosses a threshold This could include the satellite count dropping below the minimum allowable
satellites threshold.
Key Benefits
©
2022 Microchip Technology Inc.
and its subsidiaries
Manual
DS00004572A-page 10
