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

SyncE Wander

Tolerance using Tones:

Enhanced (Tolerance Level 1)

Parameters used:

• Maximum bandwidth: 10Hz
• Minimum bandwidth: 1Hz
• Maximum gain peaking: 0.2dB
• Minimum gain In pass-band: -3dB
• Noise generation allowance: ±20ns
• Two points per decade, extending more than 2 decades below the -3dB point
• Sampling rate: 30Hz

• Measured at each corner point in G.8261/Figure 17
• At least one point per decade

Image Removed

SyncE Wander Transfer using Tones: Enhanced

Parameters used:

• Maximum bandwidth: 3Hz
• Minimum bandwidth: 1Hz
• Maximum gain peaking: 0.2dB
• Minimum gain In pass-band: -3dB
• Noise generation allowance: ±5ns
• Two points per decade, extending more than 2 decades below the -3dB point
• Sampling rate: 1kHz

Frequency
(Hz)

Amplitude
(ns)

Test Time
(Cycles)

Test Time
(s)

Max. Gain
(dB)

Min. Gain
(dB)

Max. Output Amplitude (ns)

Min. Output Amplitude (ns)

32

250

2235

150

-5.1

none

29

none

10

250

1485

150

-3.0

none

77

none

3.2

250

480

150

0.2

none

176

none

1

250

150

150

0.2

-3.00

261

171

0.32

250

48

150

0.2

-3.00

261

171

0.1

320

15

150

0.2

-3.00

333

221

0.032

1000

8

250

0.2

-3.00

1029

702

0.01

2000

4

400

0.2

-3.00

2052

1410

0.0032

2000

4

1250

0.2

-3.00

2052

1410

Image Removed

Wander Tolerance based on a chain of enhanced clocks:

Image AddedFigure 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:

• Measured at each corner point in G.8262/Figure 7Tone amplitudes equal to MTIE mask value at the relevant observation interval of G.824/Figure 3
• At least one point per decade

SyncE Wander Transfer using Tones: Option 2

Parameters used:

• Maximum bandwidth: 0.1Hz
• Minimum bandwidth: none specified
• Maximum gain peaking: 0.2dB
• Minimum gain in pass-band: no criteria, since no minimum bandwidth specified
• Noise generation allowance: ±20ns
• Two points per decade, extending over 2 decades below the -3dB point
• Sampling rate: 30Hz

Frequency
(Hz)

Amplitude
(ns)

Test Time
(Cycles)

Test Time
(s)

Max. Gain
(dB)

Min. Gain
(dB)

Max. Output Amplitude
(ns)

Min. Output Amplitude
(ns)

3.2

300

480

150

-30.1

none

30

none

1

301

150

150

-20.0

none

50

none

0.32

303

48

150

-10.5

none

111

none

0.1

308

15

150

-3.0

none

238

none

0.032

325

8

250

0.2

none

353

none

0.01

380

4

400

0.2

none

409

none

0.0032

550

4

1250

0.2

none

583

none

0.001

1000

3

3000

0.2

none

1044

none

0.00032

1007

3

9375

0.2

none

1051

none

Image Removed