參數(shù)資料
型號(hào): XRT82L34
廠商: Exar Corporation
英文描述: Quad T1/E1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(四 T1/E1/J1線收發(fā)器(帶時(shí)鐘恢復(fù)和振蕩衰減器))
中文描述: 四路T1/E1/J1收發(fā)線收發(fā)器時(shí)鐘恢復(fù)和抖動(dòng)衰減器(四的T1/E1/J1線收發(fā)器(帶時(shí)鐘恢復(fù)和振蕩衰減器))
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代理商: XRT82L34
á
XRT82L34
QUAD T1/E1/J1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
PRELIMINARY
REV. P1.0.5
41
JITTER TOLERANCE IN DS1 APPLICATIONS
Input Jitter Tolerance Measurements are presented
for the following two situations.
1. The Jitter Attenuator within the Channel-Under-
Test is disabled.
2. The Jitter Attenuator within the Channel-Under-
Test is enabled and configured to operate in the Re-
ceive Path.
The results of the Input Jitter Tolerance Measure-
ments are plotted in Figure 24.
3. The "Maximum Tolerable Input Jitter Amplitude"
values reflect the amount of Jitter that will cause
the XRT82L34 to experience a Bit Error Rate (BER)
of 1x10-9.
4. 64UI-pp is the maximum amount of "Input Jitter
Amplitude" that the Test Equipment used (W&G
ANT-20) can insert into the DS1 line signal.
5. Measurements were performed with 6.4dB of cable
loss inserted into the Receive Line signal (between
the ANT20 and the Receive Input of the device).
The curve with square boxes and the curve with Tri-
angular boxes are the Jitter Tolerance Requirements
per Bellcore Category I and II GR-499-CORE (for
DS1 Applications).
Bellcore GR-499-CORE requires that the Jitter Toler-
ance Measurements always be above both curves.
The Maximum Jitter Tolerance measurements for the
XRT82L38 (for DS1 applications) is shown by the
curve marked with the Diamond boxes.
F
IGURE
24. I
NPUT
J
ITTER
T
OLERANCE
PERFORMANCE
OF
THE
XRT82L34,
FOR
DS1 A
PPLICATIONS
,
WITH
THE
J
IT
-
TER
A
TTENUATOR
D
ISABLED
DS1 Jitter Tolerance: Jitter Attenuator Disabled
0.1
1
10
100
1
10
100
1000
10000
100000
Jitter Frequency (Hz)
I
;57
;5
/
67#
'6
4#
-LWWHU
#
7ROHUDQFH
=
1R
#
-$
Bellcore GR-499-CORE (Cat I): Jitter
Tolerance Requirements for DS1
Bellcore GR-499-CORE (Cat II): Jitter
Tolerance Requirements for DS1
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XRT82L38 Octal E1/T1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(八 T1/E1/J1線收發(fā)器(帶時(shí)鐘恢復(fù)和振蕩衰減器))
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