參數(shù)資料
型號(hào): XRT91L306
廠商: Exar Corporation
英文描述: STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
中文描述: STS-12/STM-4或STS-3/STM-1的SONET / SDH收發(fā)器
文件頁數(shù): 34/39頁
文件大?。?/td> 440K
代理商: XRT91L306
XRT91L30
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
xr
REV. 1.0.1
32
4.6.2
Jitter generation is defined as the amount of jitter at the STS-N output in the absence of applied input jitter. The
bandwidth is set according to the data rate. The Bellcore and ITU requirement for this type jitter is 0.01UI rms
measured with a specific band-pass filter.
For more information on these specifications refer to Bellcore TR-NWT-000253 sections 5.6.2-5 and GR-253-
CORE section 5.6 and ITUT G.783 section 9.3.1.1. Table 17 below shows the jitter generation limits per
BellCore GR-253 and ITUT G.783 versus XRT91L30 typical jitter performance.
Jitter Generation
F
IGURE
25. XRT91L30 M
EASURED
J
ITTER
T
OLERANCE
WITH
19.44MH
Z
R
EFERENCE
C
LOCK
STS-3/STM-1
STS-12/STM-4
T
ABLE
17: XRT91L30 O
PTICAL
J
ITTER
G
ENERATION
USING
2
23
-1 PRBS
PATTERN
I
NTERFACE
M
EASUREMENT
B
AND
F
ILTER
-3dB F
REQUENCIES
GR-253/
G.783
M
AXIMUM
P
ERMISSIBLE
L
IMIT
XRT91L30 I
NTRINSIC
J
ITTER
(T
RANSMIT
P
ARALLEL
C
LOCK
I
NPUT
D
IRECTION
)
XRT91L30 I
NTRINSIC
J
ITTER
(T
RANSMIT
P
ARALLEL
C
LOCK
O
UTPUT
D
IRECTION
)
H
IGH
P
ASS
L
OW
P
ASS
19.44 MH
Z
R
EF
C
LOCK
77.76 MH
Z
R
EF
C
LOCK
19.44 MH
Z
R
EF
C
LOCK
77.76 MH
Z
R
EF
C
LOCK
O
PTICAL
(KH
Z
)
(MH
Z
)
mUI rms
mUI rms
mUI rms
mUI rms
mUI rms
OC3/STM1
12
1.3
10
2
1
2
OC12/STM4
12
5
10
7
8
7
T
ABLE
18: XRT91L30 O
PTICAL
J
ITTER
G
ENERATION
USING
2
23
-1 PRBS
PATTERN
USING
ALTERNATE
STANDARD
F
ILTERS
I
NTERFACE
M
EASUREMENT
B
AND
F
ILTER
-3dB F
REQUENCIES
XRT91L30 I
NTRINSIC
J
ITTER
(T
RANSMIT
P
ARALLEL
C
LOCK
I
NPUT
D
IRECTION
)
XRT91L30 I
NTRINSIC
J
ITTER
(T
RANSMIT
P
ARALLEL
C
LOCK
O
UTPUT
D
IRECTION
)
H
IGH
P
ASS
L
OW
P
ASS
19.44 MH
Z
R
EF
C
LOCK
77.76 MH
Z
R
EF
C
LOCK
19.44 MH
Z
R
EF
C
LOCK
77.76 MH
Z
R
EF
C
LOCK
O
PTICAL
(KH
Z
)
(MH
Z
)
mUI rms
mUI rms
mUI rms
mUI rms
OC3/STM1
65
1.3
2
1
2
OC12/STM4
250
a
a. According to ITU-T G.783
5
4
5
4
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