PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 234
PXB4221
Manufacturer Part Number
PXB4221
Description
IWE8 Interworking Element for 8 E1/T1 Lines
Manufacturer
Infineon Technologies AG
Datasheet
1.PXB4221.pdf
(290 pages)
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PXB4221EV3.2
Manufacturer:
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Figure 44
8.3.4
The aliasing effect which is inherent to the SRTS algorithm causes the jitter tolerance at
513 Hz and all multiples of 513 Hz to be a copy of the jitter tolerance at 0 Hz. Jitter
Tolerance at low frequencies violate the requirements.
With jitter attenuator jitter tolerance at low frequencies is increased and all jitter
frequencies above 20 Hz are removed. As a result no aliasing is possible. The jitter
tolerance fulfills the requirements.
Data Sheet
100
0,1
10
1
1
SRTS Jitter Tolerance in T1 Mode
SRTS Jitter Tolerance in E1 Mode with Jitter Attenuator
10
SRTS Jitter Tolerance in E1 Mode
100
1000
10000
234
100000 1000000
PXB4219 / PXB4220 / PXB4221
Application Hints
Frequency [Hz]
-50 ppm
0 ppm
+50 ppm
ITU G.823
and I.431
2002-05-06
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