PXB4220E Infineon Technologies AG, PXB4220E Datasheet - Page 236

• Manufacturer Part Number: PXB4220E
• Description: Interworking Element for 8 E1/T1 Lines
• Manufacturer: Infineon Technologies AG

8.3.5
The jitter transfer characteristics are much better than the requirements of ITU-T G.735
and I. 432.
The -3dB point of the transfer curve is proportional to the PLL-gain: 0.05 Hz for ASF=4,
0.2 Hz for ASF=16.
No impact of the jitter attenuator on the already very good jitter transfer behavior could
be measured.
Figure 47
Data Sheet
-10,0
-20,0
-30,0
-40,0
-50,0
-60,0
10,0
0,0
0,01
ACM Jitter Transfer in E1 Mode
ACM Jitter Transfer in E1 mode: ASF=4
ACM Jitter Transfer in E1 Mode without Jitter Attenuator
0,1
Frequency [Hz]
1
236
10
PXB 4219E, PXB 4220E, PXB 4221E
100
1000
Application Hints
IWE8, V3.4
-50 ppm
0 ppm
+50 ppm
ITU G.735
and I.431
2003-01-20