Comtech EF Data SDM-300A Installation And Operation Manual page 10

Preface
C.2.8 Frequency Reference...........................................................................................................................C-8
C.2.9 Transmit Frequency Change Time ......................................................................................................C-8
C.2.10 Phase Noise.....................................................................................................................................C-8
C.2.11 Transmit IF Output Switch .............................................................................................................C-9
C.2.12 Transmit IF Power ..........................................................................................................................C-9
C.2.13 Modulator Power Offset .................................................................................................................C-9
C.2.14 Modulated IF Output Shape............................................................................................................C-9
C.2.15 Spurious Emissions.........................................................................................................................C-9
C.2.16 Modulator Phase Error..................................................................................................................C-10
C.2.17 Transmit IF Test Modes................................................................................................................C-10
C.2.18 Modulator Spectrum Rotation The operator can select Normal or Inverted spectrum of the of the
Modulator Output. ..............................................................................................................................................C-10
C.2.19 Encoding .......................................................................................................................................C-10
C.2.19.1 BPSK Encoding........................................................................................................................C-10
C.2.19.2 QPSK Encoding .......................................................................................................................C-10
C.2.19.3 OQPSK Encoding.....................................................................................................................C-11
C.2.19.4 8PSK Encoding ........................................................................................................................C-11
C.3 Demodulator Specifications ............................................................................................................... C-12
C.3.1 Digital Data Rate...............................................................................................................................C-12
C.3.2 Demodulation and FEC Decoding Types..........................................................................................C-13
C.3.3 Descrambling Types..........................................................................................................................C-14
C.3.4 Differential Decoder..........................................................................................................................C-14
C.3.5 BPSK Bit Ordering ...........................................................................................................................C-14
C.3.6 Decoding ...........................................................................................................................................C-14
C.3.6.1 BPSK Encoding........................................................................................................................C-14
C.3.6.2 QPSK Encoding .......................................................................................................................C-15
C.3.6.3 OQPSK Encoding.....................................................................................................................C-15
C.3.6.4 8PSK Encoding ........................................................................................................................C-15
C.3.7 Demodulator (Reed-Solomon Codec) ...............................................................................................C-16
C.3.8 Demodulator Spectrum Rotation.......................................................................................................C-16
C.3.9 Receive Frequency (IF).....................................................................................................................C-16
C.3.10 Receive Input Power (Desired Carrier).........................................................................................C-16
C.3.11 Receive Input Power (Composite) ................................................................................................C-16
C.3.12 IF Input Overload .........................................................................................................................C-16
C.3.13 Demodulator IF Input Shape.........................................................................................................C-17
C.3.14 Channel Spacing/Adjacent Carrier Performance ..........................................................................C-17
C.4 BER Performance Specifications ...................................................................................................... C-18
C.4.1 Performance with Noise, Viterbi Decoder, and Open Network Mode..............................................C-19
C.4.2 Performance with Noise, Viterbi Decoder, and Closed Network......................................................C-21
C.4.3 Performance with Noise, Viterbi Decoder, and Reed-Solomon (Optional) ......................................C-23
C.4.4 Performance with Noise, 56 kbit/s and Sequential Decoder (Optional)............................................C-25
C.4.5 Performance with Noise, 1544 kbit/s and Sequential Decoder (Optional)........................................C-27
C.4.6 Performance with Noise at 1544 kbit/s, Sequential Decoder, and Reed-Solomon (Optional) ..........C-29
C.4.7 8PSK Performance with Noise and With/Without Reed-Solomon ...................................................C-31
C.4.8 Performance with Noise, Viterbi Decoder, and OQPSK...................................................................C-33
C.4.9 Performance with Noise, Uncoded (1/1) BPSK, QPSK, and OQPSK ..............................................C-35
C.4.10 BER Threshold .............................................................................................................................C-35
C.5 Acquisition Time................................................................................................................................. C-37
C.5.1 Receive IF Carrier Acquisition Range ..............................................................................................C-37
C.5.2 Receive IF Carrier Reacquisition ......................................................................................................C-37
C.5.3 AGC Output ......................................................................................................................................C-38
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SDM-300A
Rev. 4