參數(shù)資料
型號: XRT75R06D
廠商: Exar Corporation
英文描述: SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
中文描述: 六通道E3/DS3/STS-1線路接口單元與SONET DESYNCHRONIZER
文件頁數(shù): 40/105頁
文件大?。?/td> 591K
代理商: XRT75R06D
XRT75R06D
REV. 1.0.0
á
SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
35
5.0
There are three fundamental parameters that describe circuit performance relative to jitter
Jitter Tolerance
Jitter Transfer
Jitter Generation
5.1
J
ITTER
T
OLERANCE
Jitter tolerance is a measure of how well a Clock and Data Recovery unit can successfully recover data in the
presence of various forms of jitter. It is characterized by the amount of jitter required to produce a specified bit
error rate. The tolerance depends on the frequency content of the jitter. Jitter Tolerance is measured as the
jitter amplitude over a jitter spectrum for which the clock and data recovery unit achieves a specified bit error
rate (BER). To measure the jitter tolerance as shown in Figure 26, jitter is introduced by the sinusoidal
modulation of the serial data bit sequence. Input jitter tolerance requirements are specified in terms of
compliance with jitter mask which is represented as a combination of points. Each point corresponds to a
minimum amplitude of sinusoidal jitter at a given jitter frequency.
JITTER
5.1.1
Bellcore GR-499 CORE specifies the minimum requirement of jitter tolerance for Category I and Category II.
The jitter tolerance requirement for Category II is the most stringent. Figure 27 shows the jitter tolerance curve
as per GR-499 specification.
DS3/STS-1 Jitter Tolerance Requirements
F
IGURE
26. J
ITTER
T
OLERANCE
M
EASUREMENTS
FREQ
Synthesizer
Pattern
Generator
DUT
XRT75R06D
Error
Detector
Modulation
Freq.
Data
Clock
相關(guān)PDF資料
PDF描述
XRT75R06DIB SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
XRT75R06 SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
XRT75R06IB SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
XRT75R12D TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
XRT75R12DIB TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
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