參數(shù)資料
型號(hào)： TMPR28051-3-SL5
英文描述： Paired Cable; Number of Conductors:12; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyolefin; Number of Pairs:6; Impedance:100ohm; Voltage Nom.:300V RoHS Compliant: Yes
中文描述： TMPR28051 STS-1/AU-3（的STM - 0）映射為版本的設(shè)備5設(shè)備咨詢(xún)
文件頁(yè)數(shù)： 9/90頁(yè)
文件大?。?/td> 1090K
代理商： TMPR28051-3-SL5
Advisory, Rev. 2
August 5, 1999
TMPR28051 STS-1/AU-3 (STM-0) Mapper
Device Advisory for Version 3 of the Device
3
Lucent Technologies Inc.
VT Mapping (VT)
(continued)
VT-5. C-Bit Decoding
In the presence of a receive SONET/SDH bit error rate, the device may destuff the DS1 from the VT1.5 incorrectly.
This is the result of an error in the VT1.5 C-bit decoding process. The C-bit decoding process should be capable of
correcting single errors to the C bits. Because of this error, an error in the first or second C bit for position 2 will be
incorrectly decoded if the first C-bit position is calling for a stuff and the second C-bit position is not. The end result
of this error is that both positions will call for a stuff, resulting in a bit being removed from the DS1 data stream. This
will force downstream equipment to experience a reframe.
The minimum time to false decode severity is as shown in Table VT-5 (in terms of seconds to false decode).
Table VT-5. Minimum Time (in Seconds) to
False Decode Severity of the C Bit
In the absence of an external bit error rate, the algorithm decodes these C bits correctly.
Test Pattern (TP) Generator/Monitor
TP-1. Test Pattern Insert
The transmitted test pattern comes out on the opposite edge with respect to the jitter-attenuated data.
TP-2. Test Pattern Drop
The test pattern detector always inverts the clock coming into the block before retiming the data.
Device Version (DV)
DV-1. Device Version Report
The device version register, 0x16, reports the device version as 0x02.
BER
Theoretical
Actual
10
–3
125
0.25
10
–4
12500
2.5
10
–5
1250000
25
10
–6
1.25e+8
250
10
–7
1.25e+10
2500
10
–8
1.25e+12
2.5e+4
10
–9
1.25e+14
2.5e+5
10
–10
1.25e+16
2.5e+6
相關(guān)PDF資料
PDF描述
TMPR28051 TMPR28051 STS-1/AU-3 (STM-0) Mapper Device Advisory for Version 5 of the Device
TMUX03155 TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer
TMXF28155 TMXF28155 Super Mapper 155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
TMXF84622 TMXF84622 155 Mbits/s/622 Mbits/s Interface SONET/SDH x84/x63 Ultramapper
TN2-L-H-3V SLIM POLARIZED RELAY
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