What Frequencies should be used for testing SyncE Wander Tolerance?
SyncE Wander Tolerance using Tones: Option 1 and Enhanced (Tolerance Level 2)
Note that for Enhanced SyncE clocks specified in G.8262.1, there are two tolerance levels; level 2 is the same as the tolerance for standard SyncE clocks as specified in G.8262.
Parameters used:
Measured at each corner point in G.8262/Figure 7
At least one point per decade
Frequency (Hz) | MTIE Observation Interval (s) | Amplitude | Test Time | Test Time |
|---|---|---|---|---|
10 | 0.032 | 250 | 1500 | 150 |
1 | 0.32 | 250 | 150 | 150 |
0.13 | 2.5 | 250 | 20 | 154 |
0.016 | 20 | 2000 | 4 | 250 |
0.0032 | 100 | 2000 | 4 | 1250 |
0.0008 | 400 | 2000 | 3 | 3750 |
0.00032 | 1000 | 5000 | 3 | 9375 |
SyncE Wander Tolerance using Tones: Enhanced (Tolerance Level 1)
Parameters used:
Measured at each corner point in G.8261/Figure 17
At least one point per decade
Frequency (Hz) | MTIE Observation Interval (s) | Amplitude (ns) | Test Time (Cycles) | Test Time (s) |
|---|---|---|---|---|
3.2 | 0.1 | 50 | 1500 | 469 |
0.32 | 1 | 50 | 150 | 469 |
0.053 | 6 | 300 | 15 | 283 |
0.032 | 10 | 300 | 4 | 125 |
0.0032 | 100 | 300 | 4 | 1250 |
0.00032 | 1000 | 300 | 3 | 9375 |
Wander Tolerance based on a chain of enhanced clocks:
Figure 17/G.8261 - Network limit for wander (MTIE) at enhanced synchronous equipment clock interfaces
SyncE Wander Tolerance using Tones: Option 2
More information regarding how the tones were selected can be found: G.8262: Wander Tolerance and Transfer for Option II Clocks
Parameters used:
Tone amplitudes equal to MTIE mask value at the relevant observation interval of G.824/Figure 3
At least one point per decade
Frequency | MTIE Observation Interval (s) | Amplitude | Test Time | Test Time |
|---|---|---|---|---|
3.2 | 0.1 | 300 | 480 | 150 |
0.32 | 1 | 303 | 150 | 469 |
0.032 | 10 | 325 | 8 | 250 |
0.0032 | 100 | 550 | 4 | 1250 |
0.0011 | 280 | 1000 | 3 | 2727 |
0.00032 | 1000 | 1007 | 3 | 9375 |