XRT91L30
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
xr
REV. 1.0.1
4.5 Eye Diagram
The XRT91L30 Eye diagram illustrates the transmit serial output signal integrity and quality.
FIGURE 22. TRANSMIT ELECTRICAL OUTPUT EYE DIAGRAM
STS-3/STM-1
STS-12/STM-4
4.6 SONET Jitter Requirements
SONET equipment jitter requirements are specified for the following types of jitter. The definitions of each of
these types of jitter are given below. SONET equipment jitter requirements are specified for the following two
types of jitter.
4.6.1 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 23, with the corresponding parameters specified in the figure.
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