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Pre-defined Templates
11.11.3 SSU Type IV Expressed as MTIE
Standard: Draft ITU-T Recommendation G.812 (09/97)
File name: SHORT TRANSIENT SSU IV G812.mti
Object to which the specification applies: Synchronisation Supply Unit (SSU) Type IV
Specified quantity and measurement conditions: The phase transient response at
the output of a Synchronisation Supply Unit Type IV must meet this mask when the
currently selected input reference is lost and a second reference, traceable to the
same reference clock, is selected instead.
Mathematical description (as specified in the standard):
MTIE
61 000 τ
1000
Observation Interval
0.00133 < τ < 0.0164
τ > 0.0164
Template (circles = points stored in the WinSTS template file):
MTIE [s]
1.00E-05
1.00E-06
1.00E-07
1.00E-08
1.0E-02
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
Observation Interval [s]
Comments: This mask is applicable to 1544 kbit/s interfaces. A different mask
applies to STM-N interfaces - see Draft ITU-T Rec. G.812 (09/97).
OSA 5565 User Manual Revision A
April 2010
11-28