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TECHNICAL OVERVIEW

G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

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Page 1: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

TECHNICAL OVERVIEW

Page 2: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200
Page 3: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

o

o

SyncE SyncE

1pps

PTP PTP Master Slave

EEC

Page 4: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

SyncE

Master Slave

EEC

Time

Tim

e E

rro

r

“Ideal” Time Ref.

Interval

Tim

e In

terv

al E

rro

r

“Ideal” Freq. Ref.

PTP

1pps

PTP

SyncE

Time Tim

e E

rro

r

“Noisy” output

T-BC

Page 5: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

SyncE

Master Slave

EEC

PTP

1pps

PTP

SyncE

Time Tim

e E

rro

r

“Noisy” output

Interval

Tim

e In

terv

al E

rro

r

“Noisy” Freq. Ref.

Time

Tim

e E

rro

r

“Noisy” Time Ref.

T-BC

Page 6: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

0.05 0.1 Frequency, Hz

Am

plit

ud

e, d

B

Am

plit

ud

e, d

B

0.05 0.1 Frequency, Hz 1 10

Time Tim

e E

rro

r

Sinusoidal Time Error

Interval

Tim

e In

terv

al E

rro

r

“Ideal” Freq. Ref.

Time Tim

e E

rro

r

Attenuated output PTP

SyncE

PTP

1pps

Page 7: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

T-BC output phase mask for SyncE transient input

Time after start of SyncE rearrangement (s)

0 10 20 30 40 50 60

Ab

solu

te P

hase e

rror

(ns)

0

50

100

150

200

250

300

350

ESMC changed back to QL-PRC

ESMC changed from QL-PRC to QL-EEC

Time Tim

e E

rro

r

Attenuated output PTP

SyncE

PTP

1pps

Time Tim

e E

rro

r

“Ideal” Time Ref.

Interval

Tim

e In

terv

al E

rro

r

Sinusoidal Wander

Page 8: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200

PTP

SyncE

PTP

1pps

Interval

Tim

e In

terv

al E

rro

r

“Ideal” Freq. Ref.

Time

Tim

e E

rro

r

Interrupted Time Ref.

X

Time

Tim

e E

rro

r

Output Drift

Page 9: G.8273.2 Telecom Boundary Clock Specification · T-BC output phase mask for SyncE transient input Time after start of SyncE rearrangement (s) 0 10 20 30 40 50 60) 0 50 100 150 200