Figure 56
參數(shù)資料
型號: XRT75R12DIB
廠商: Exar Corporation
文件頁數(shù): 18/133頁
文件大小: 0K
描述: IC LIU E3/DS3/STS-1 12CH 420TBGA
標(biāo)準(zhǔn)包裝: 40
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 12/12
規(guī)程: DS3,E3,STS-1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 420-LBGA 裸露焊盤
供應(yīng)商設(shè)備封裝: 420-TBGA(35x35)
包裝: 托盤
XRT75R12D
110
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
REV. 1.0.3
8.5.3
Pointer Burst
Figure 56 presents an illustration of the "Pointer Burst" Pointer Adjustment Scenario per Telcordia GR-253-
CORE.
Telcordia GR-253-CORE mandates that the Intrinsic Jitter, within the DS3 signal that is de-mapped from a
SONET signal, which is experiencing the "Burst of Pointer Adjustment" scenario, must NOT exceed 1.3UI-pp.
8.5.4
Phase Transients
Figure 57 presents an illustration of the "Phase Transients" Pointer Adjustment Scenario per Telcordia GR-
253-CORE.
FIGURE 56. ILLUSTRATION OF BURST OF POINTER ADJUSTMENT SCENARIO
FIGURE 57. ILLUSTRATION OF "PHASE-TRANSIENT" POINTER ADJUSTMENT SCENARIO
Initialization
Cool Down
Measurement Period
>30s
Pointer Adjustment Events
0.5ms
t
Pointer Adjustment Burst Train
0.5ms
Initialization
Cool Down
Measurement Period
>30s
Pointer Adjustment Events
0.25s
t
Pointer Adjustment Burst Train
0.25s
0.5s
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