xrt75r12 Exar Corporation, xrt75r12 Datasheet - Page 41

• Manufacturer Part Number: xrt75r12
• Description: Twelve Channel E3/ds3/sts-1 Line Interface Unit With Jitter
• Manufacturer: Exar Corporation

REV. 1.0.4
ITU-T G.823 standard specifies that the clock and data recovery unit must be able to tolerate jitter up to certain
specified limits.
As shown in the Figures above, in the jitter tolerance measurement, the dark line indicates the minimum level
of jitter that the E3/DS3/STS-1 compliant component must tolerate.
versus the modulation frequency for various standards.
F
F
5.1.2
IGURE
IGURE
26. I
27. I
E3 Jitter Tolerance Requirements
0.15
NPUT
1.5
NPUT
0.3
0.1
64
41
15
10
5
Figure 27
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
0.01
J
J
ITTER
ITTER
10
1.5
0.3
64
T
T
0.1
shows the tolerance curve.
OLERANCE
OLERANCE FOR
0.03
JITTER FREQUENCY (kHz)
JITTER FREQUENCY (kHz)
F
OR
E3
DS3/STS-1
0.3
1
38
2
10
Table 10
20
below shows the jitter amplitude
800
100
ITU-T G.823
XRT75R12
GR-253 STS-1
GR-499 Cat II
XRT75R12
GR-499 Cat I
XRT75R12