SDM-2020 Satellite Demodulator
Data Interfaces
Rev.3
A–49
A.6.4.7
Receive Data Rate 44.736 Mbit/s Specifications
Refer to Table A-30 for data rate specifications.
Table A-30. RX Data Rate 44.736
Parameter
Specification
Data Rate
44.736 Mbit/s,
±
20 ppm
Line Coding
B3ZS and AMI at 44.736 Mbit/s
Pulse Shape
Per ITU-T-G.703, Figure 14/G.703
Jitter Characteristics:
Input Jitter
Output Jitter
Complies with ITU-T-G.824, and Table 1/G.824.
Complies ITU-T-G.824 and Figure 1/G.824.
A.6.4.8
Receive Data Rate 51.840 Mbit/s Specifications
Refer to Table A-31 for data rate specifications.
Table A-31. RX Data Rate 51.840 Mbit/s
Parameter
Specification
Data Rate
51.840 Mbit/s,
±
20 ppm
Line Coding
B3ZS and AMI at 51.840 Mbit/s
Pulse Shape:
Amplitude
Pulse Width
Pulse Mask
±
1.75V (
±
10%)
9.64 ns (
±
10%)
Per TA-NWT-000253 (STS-1)
Jitter Characteristics
Input Jitter: Complies with ITU-T-G.824, Table 1/G.824 scaled from those
defined for 44.736 Mbit/s to apply to 51.840 Mbit/s.
Содержание SDM-2020
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