Radyne DM240XR Spezifikationen PDF herunterladen (Seite 86)

DM240XR High-Speed Digital Modulator Technical Specifications

MN-DM240XR– Revision 13 7–2

7.3 Baseband Specification

7.3.1 DVB-S

Compliance EN 300-421 and EN 301-210

Modulation Types: BPSK, QPSK, 8PSK, 16QAM

Data Rate: 1 to 59.5 Mbps in 1 bps steps (BPSK)

1 to 119 Mbps in 1 bps steps (QPSK)

2 to 181 Mbps in 1 bps steps (8PSK)

3 to 238 Mbps in 1 bps steps (16QAM)

Symbol Rate: 1 to 68 Msps in 1 sps steps

Frame Size: 187 payload bytes, 1 sync byte, 16 parity bytes

Terrestrial Framing: 204, 188, 187 (Unframed data)

Randomization for Energy Dispersal: Per EN 300-421

Outer Code: Reed-Solomon (204,188,T = 8)

Interleaver: Convolutional, I = 12

Inner Code: (BPSK): 1/2, 2/3, 3/4, 5/6, 7/8

(QPSK): 1/2, 2/3, 3/4, 5/6, 7/8

(8PSK): 2/3, 5/6, 8/9

(16QAM): 3/4, 7/8

Viterbi K = 7, G1 = 171oct G2 = 133oct

Baseband Roll-Off: Square Root Raised Cosine

0.35 (BPSK, QPSK, 8PSK, 16QAM)

0.25 (8PSK, 16QAM)

0.20 (BPSK, QPSK)

Terrestrial Input Clock Accuracy: 400 ppm (Maximum)

Test Pattern: Internal 2

-1 and 2

-1 Pseudo-Random Number

Generators

7.3.2 DVB-S2-CCM (CCM - Normative)

Compliance ETSI EN 302 307 v1.1.1 (normative)

Modulation Types: QPSK, (8PSK, 16APSK & 32APSK Optional)

Transport Streams Single MPEG Packetized Transport Streams

Data Rate: (QPSK): 1 to 54 Mbps in 1 bps steps

(8PSK): 2 to 118 Mbps in 1 bps steps

(16APSK): 2.6 to 160 Mbps in 1 bps steps

(32APSK): 3.5 to 200 Mbps in 1 bps steps

Symbol Rate: 1 to 45 Msps in 1 bps steps

Terrestrial Framing: 188 (1 sync byte, 187 payload bytes)

Baseband Processing: Per ETSI EN 302 307 v1.1.1

Block Size: 64800 bits & 16200 bits

FEC Code: BCH + LDPC

Interleaver: Block Interleaver, per ETSI EN 302 307 v1.1.1

Inner Code Rate: (QPSK): 1/4, 1/3, 2/5, 1/2, 2/3, 3/5, 3/4, 4/5, 5/6, 8/9,

9/10

(8PSK): 3/5, 2/3, 3/4, 5/6, 8/9, 9/10 Optional

(16APSK): 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 Optional

(32APSK): 3/4, 4/5, 5/6, 8/9, 9/10 Optional

Baseband Roll-Off Square Root Raised Cosine

0.20

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 195 196

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