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C-band transmit reject filter specifications, C-band modulator-related specifications, Digital data rate – Comtech EF Data C5 User Manual

Page 39: 3 c-band transmit reject filter specifications

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C5/K1/K3 Integrated Satellite Terminal System

Specifications

Rev. 0

2–5

2.1.3

C-Band Transmit Reject Filter Specifications

Refer to Table 2-4 for transmit reject filter specifications.

Table 2-4. C-Band TX Reject Filter Specifications

Parameter

Specifications

Passband

3.7 to 4.2 GHz

Insertion Loss

0.035 dB maximum

Stop Band

5.85 to 6.425 GHz

Rejection

55 dB minimum

Flange Connection

CPR-229 G

2.1.4 C-Band

Modulator-Related

Specifications

2.1.4.1

Digital Data Rate

The digital data rate (Table 2-5) selectable in 1 Hz steps. The symbol rate is automatically
calculated based on the programmed data rate. Data rates entered that exceed the data rate
or symbol rate specification are rejected at entry.

The symbol rate range is 4.8 to 2500 ks/s.

Table 2-5. C-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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