SMD 989– User Manual
Page 100 (105)
Spurious Performance -50 dBc @ -10 dBm
SMD 968 TurboPSK Modulation (SMD 912(A) Only)
Supported modulation schemes and FEC:
QPSK 1/2, 2/3, 3/4, 5/6, 7/8
8PSK 2/3, 3/4, 4/5, 5/6, 8/9
16QAM 3/4
Note: Turbo PSK mode ¾ 2.05 = “3/4”, ¾ 2.10 = “4/5”
Min Symbol Rate: 0.5 MSps
Max Symbol Rate: Up to 30 MSps with SMD 966 License
Frame length: Short (16,200 bits) or Long (64,800 bits)
Alpha Filter Roll-off Factor: 05%, 10%, 15%, 20%, 25%, 35%
Spurious Performance -58 dBc @ -10 dB
Modulator Latency: Normal, Reduced 1, 2 or 3, Minimum
Sync Byte Delete Removes input sync byte
SMD 970 TS Analysis and Null Packet Error Detection (SMD 910 or SMD 912(A))
TS Analysis TR101290 P1 Error Detect/Adjustable Thresholds
TS Analysis Inputs Dual Analysis – Primary and Backup Inputs
TS Analysis Thresholds User definable thresholds
Null Packet Ratio Null Packets/Total packets avg. over 1 sec
(Expressed as percentage)
Null Packet Error Threshold Range User Entry 1-99% (Default 20%)
Null Packet Error Null Packet Ratio exceeds threshold
Accuracy 1%
SMD 971 BISS Scrambling Option (SMD 910 or SMD 912(A))
Scrambling Entire Transport Stream. A CA_descriptor is
added the PMT of each scrambled service a
CAT is created or edited.
Mode 1 12 character unencrypted hex Session word
Mode E 16 Character encrypted hex Session word and
14 character injected Identifier (ID)
PRBS (Pseudo Random Binary Sequence)
Signal Types: PN23, Inverted PN23
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