參數(shù)資料
型號(hào)： XRT83SH38
廠商： Exar Corporation
英文描述： 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述： 8通道的T1/E1/J1短途線路接口單元
文件頁(yè)數(shù)： 41/78頁(yè)
文件大?。?/td> 606K
代理商： XRT83SH38
XRT83SH38
38
REV. 1.0.7
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
5.2.4
N+1 Redundancy Using External Relays
N+1 redundancy has one backup card for N primary cards. Due to impedance mismatch and signal
contention, external relays are necessary when using this redundancy scheme. The relays create complete
isolation between the primary cards and the backup card. This allows all transmitters and receivers on the
primary cards to be configured in internal impedance, providing one bill of materials for all interface modes of
operation. The transmit and receive sections of the LIU device are described separately.
5.2.5
Transmit Interface with N+1 Redundancy
For N+1 redundancy, the transmitters on all cards should be programmed for internal impedance. The
transmitters on the backup card do not have to be tri-stated. To swap the primary card, close the desired
relays, and tri-state the transmitters on the failed primary card. A 0.68uF capacitor is used in series with TTIP
for blocking DC bias. See
Figure 29
for a simplified block diagram of the transmit section for an N+1
redundancy scheme.
F
IGURE
29. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
THE
T
RANSMIT
I
NTERFACE
FOR
N+1 R
EDUNDANCY
Backplane Interface
Primary Card
XRT83SH38
Tx
Line Interface Card
0.68uF
T1/E1 Line
0.68uF
Primary Card
Tx
0.68uF
Primary Card
Tx
0.68uF
Backup Card
Tx
T1/E1 Line
T1/E1 Line
Internal
Impedence
1:2
1:2
1:2
XRT83SH38
XRT83SH38
XRT83SH38
Internal
Impedence
Internal
Impedence
Internal
Impedence
相關(guān)PDF資料
PDF描述
XRT83SH38_0609 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SH38IB 8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216 16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216_06 16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SL216IB 16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT83SH38_0609 制造商:EXAR 制造商全稱:EXAR 功能描述:8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83SH38ES 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 8 CHT1/E1LIUSH RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83SH38IB 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83SH38IB-F 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83SL216 制造商:EXAR 制造商全稱:EXAR 功能描述:16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*