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Ku-band modulator-related specifications, Digital data rate – Comtech EF Data C5 User Manual

Page 52

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Specifications

C5/K1/K3 Integrated Satellite Terminal System

2–18

Rev. 0

2.2.3

Ku-Band Modulator-Related Specifications

2.2.3.1

Digital Data Rate

The digital data rate (Table 2-13) is selectable in 1 Hz steps. The symbol rate is
automatically calculated based on the programmed data rate. Data rates that exceed the
data rate or symbol rate specification are rejected at entry.

The symbol rate range is 4.8 kHz to 2.5 MHz.

Table 2-13. Ku-Band Digital Data Rate

Modulation Type

Encoding Type

Data Rate Range

BPSK 1/2
QPSK 1/2
QPSK 3/4
QPSK 7/8

Viterbi
Viterbi
Viterbi
Viterbi

2.4 kbit/s
4.8 kbit/s
7.2 kbit/s
8.4 kbit/s

1.25 Mbit/s
2.5 Mbit/s
3.75 Mbit/s
4.375 Mbit/s

BPSK 1/2
QPSK 1/2
QPSK 3/4
QPSK 7/8

Sequential
Sequential
Sequential
Sequential

2.4 kbit/s
4.8 kbit/s
7.2 kbit/s
8.4 kbit/s

1.25 Mbit/s
2.5 Mbit/s
3.75 Mbit/s
4.375 Mbit/s

BPSK 1/2
QPSK 1/2
QPSK 3/4
QPSK 7/8

Viterbi and Reed-Solomon
Viterbi and Reed-Solomon
Viterbi and Reed-Solomon
Viterbi and Reed-Solomon

2.4 kbit/s
4.8 kbit/s
7.2 kbit/s
8.4 kbit/s

1.138 Mbit/s
2.277 Mbit/s
3.416 Mbit/s
3.986 Mbit/s

BPSK 1/2
QPSK 1/2
QPSK 3/4
QPSK 7/8

Sequential and Reed-Solomon
Sequential and Reed-Solomon
Sequential and Reed-Solomon
Sequential and Reed-Solomon

2.4 kbit/s
4.8 kbit/s
7.2 kbit/s
8.4 kbit/s

1.138 Mbit/s
2.277 Mbit/s
3.416 Mbit/s
3.986 Mbit/

Note: In ASYNC overhead operation, the maximum data rate is limited to 2048 kbit/s for QPSK
modulation, and 1024 kbit/s for BPSK modulation.

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