Comtech-ef-data RCF6001 Manual do Utilizador descarregar pdf (Página 76)

Operation RCF6001 Satellite Terminal

Page 3-2 TM082 Rev. 1.0

DMD2401 LB/ST Technical Specifications

Transmit and Receive Data Rates

DMD2401LB BPSK - 9.6 to 1024 Kbps, Rate 1/2 (Standard)

QPSK - 19.2 to 2048 Kbps, Rate 1/2 (Optional)

QPSK - 28.8 to 2048 Kbps, Rate 3/4 (Optional)

QPSK - 33.6 to 2048 Kbps, Rate 7/8 (Optional)

Data Rate Setting: Selectable in 1 bps steps

Modulator/Tx Specifications

Frequency 950-1525 MHz

Reference Frequency Signal 10 MHz

Reference Stability 1x10

-7

Optional 1x10

-8

, 1x10

-9

Frequency Resolution 100 Hz

Output Level -5 to -30 dBm

Phase Noise

100 Hz -60 dBc

1000Hz -70 dBc

10 KHz -75 dBc

100 KHz -85 dBc

Spurious and Harmonics -50 dBc

Impedance 50 ohms

Return Loss 14 dB

Output Voltage

Output Current

10 MHz Reference levels -10 dBm, ± 5 dB

Connector SMA

Demodulator/Rx Specifications

Frequency 950-1525 MHz

Frequency Resolution 100 Hz

Carrier Acquisition ± 30 KHz

Input Carrier Range -65 to -40 dBm

(Symbol Rate <64 KHz)

-50 to -30 dBm

(Symbol Rate >640 KHz)

Aggregate Power Min. of -10 dBm or 35 dBc

Impedance 50-ohm

Return Loss 8 dB Min.

Output Voltage

Output Current

10 MHz Reference levels -10 dBm, ± 5 dB

Connector Type-F

Typical Eb/No (Viterbi) Rate 1/2 Rate 3/4 Rate 7/8

@ BER=10

-5

5.1 6.2 7.5

@ BER=10

-7

6.2 7.7 8.6

Typical Eb/No, @ 64 Kbps

Sequential Rate 1/2 Rate 3/4 Rate 7/8

@ BER=10

-5

4.0 5.0 6.1

@ BER=10

-7

4.9 5.9 7.4

Descrambler: Intelsat V.35, mode selectable

Data Buffering: 8 bits to 262,144 bits, in 8-bit steps

Terrestrial Interfaces: RS-449/422, RS232 or V.35

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