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
