Time
The time parameters are found via menu path .
| Parameter | Value | Range |
|---|---|---|
| Synch source | IEEE 1588 |
In IEEE 1588 v2, the PTP domain is a logical grouping of clocks that synchronize to each other using the protocol but that are not necessarily synchronized to clocks in another domain.
Best master clock algorithm
The best master clock algorithm compares data describing two clocks to determine which data describes the better clock. This algorithm is used to determine which of the described clocks in several announce messages received by the local clock port is the best clock.
Time synchronization monitoring values
The time synchronization monitoring values are found via menu path
| Description | Value |
|---|---|
| Sync source | IEEE 1588 slave |
| Sync status | Up |
| Down | |
| Sync accuracy | 0...26 bits |
Sync accuracy indicates the synchronization accuracy in number of fractional bits.
Sync accuracy can be calculated from the number of bits according to a formula.
Synch_accuracy = 2^-2bits seconds
| Bits | Accuracy |
|---|---|
| 21 | 0.5 μs |
| 20 | 1 μs |
| 19 | 2 μs |
| 18 | 4 μs |
| 17 | 8 μs |
| 11 | 0.5 ms |
| 10 | 1 ms |
| 9 | 2 ms |
| 8 | 4 ms |
| 7 | 8 ms |
| 1 | 0.5 s |
| 0 | 1 s |
IEEE 1588 v2 monitoring values
The IEEE 1588 v2 monitoring values are found via menu path
| Description | Value |
|---|---|
| Grandmaster Identity |
Within a domain, grandmaster is the clock that is the ultimate source of time for clock synchronization using the PTP protocol.
Grandmaster identity indicates the identity of the master clock.