XRT91L81IB View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT91L81IB' PDF : 40 Pages View PDF
PRELIMINARY
XRT91L81
2.488/2.666GBPS OC-48/STM-16 SONET/SDH TRANSCEIVER
REV. P1.0.3
4.4 SONET Jitter Requirements
SONET equipment jitter requirements are specified for the following three types of jitter. The definitions of each
of these types of jitter are given below. SONET equipment jitter requirements are specified for the following
three types of jitter.
4.4.1 Jitter Tolerance:
Jitter tolerance is defined as the peak-to-peak amplitude of sinusoidal jitter applied on the input OC-N
equipment interface that causes an equivalent 1dB optical power penalty. OC-1/STS-1, OC-3/STS-3, OC-12
and OC-48 category II SONET interfaces should tolerate, the input jitter applied according to the mask of
Figure 17, with the corresponding parameters specified in the figure.
FIGURE 17. JITTER TOLERANCE MASK
A3
Input
Jitter
Am plitude
(UIpp)
A2
slope= -20dB/decade
slope= -20dB/decade
A1
f0
f1
f2
f3
f4
Jitter Frequency (Hz)
OC-N/STS-N LEVEL
1
3
12
48
F0 (HZ)
10
10
10
10
F1 (HZ)
30
30
30
600
F2 (HZ)
300
300
300
6000
F3 (HZ)
2K
6.5K
25K
100K
F4 (HZ) A1 (UIPP) A2 (UIPP) A3 (UIPP)
20K
0.15
1.5
15
65K
0.15
1.5
15
250K
0.15
1.5
15
1000K
0.15
1.5
15
25
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