Comtech EF Data SDM-2020 - Manual (Page 175)

SDM-2020 Satellite Demodulator Revision 4
G.703 Data Interface MN/SDM2020D.IOM
11–9
11.1.4.7 Receive Data Rate 44.736 Mbps Specifications
Refer to Table 11-8 for data rate specifications.
Table 11-8. RX Data Rate 44.736 Mbps
Parameter Specification
Data Rate 44.736 Mbps, ± 20 ppm
Line Coding B3ZS and AMI at 44.736 Mbps
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.
11.1.4.8 Receive Data Rate 51.840 Mbps Specifications
Refer to Table 11-9 for data rate specifications.
Table 11-9. RX Data Rate 51.840 Mbps
Parameter Specification
Data Rate 51.840 Mbps, ± 20 ppm
Line Coding B3ZS and AMI at 51.840 Mbps
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 Mbps to apply to 51.840 Mbps.