Harmonic ProView 7100 - Page 78

Chapter 7 Device Configuring Using EMS Physical Input Ports and Slots
© 2012 Harmonic Inc. 78 ProView 7000 v.2.6, Rev. E
■ Frame Size
6
– DVB-S2 only. Options:
❑ Normal frame (64,800 bits)
❑ Short frame (16,200 bits)
■ Pilot Symbols – DVB-S2 only. Options:
❑ Automatic
6
❑ On – the demodulator expects to find pilot symbols in the stream.
❑ Off – the demodulator does not expect not to find pilot symbols.
NOTE: Not finding pilot symbols when expected, or finding them when not expected, prevents
demodulator lock.
■ Physical Layer Scrambling Seed – Enables the user to set the value for the scrambling seed.
DVB-S2 only. Range: 0 – 262,141.
■ Roll-Off Factor – DVB-S2 only. Options:
❑ Automatic
6
❑ 20%
❑ 25%
❑ 35%
■ Acquisition Mode
7
– Sets the frequency scanning span of the receiver when searching for
the satellite carrier frequency (lock acquisition search range). Options:
❑ Narrow
❑ Wide
NOTE: Wide search is the normal operation mode of the receiver frequency acquisition scan.
Narrow Search mode should be used when symbol rate of the input is lower than 5 MBd.
■ Frequency Drift Compensation – Compensate for LNB frequency drift, see B.6 Front End
Card Features for board details. Options:
❑ On
❑ Off
■ BER Threshold (DVB-S only) – Sets the threshold limit to raise the Bit Error Rate alarm.
Range: 0.00001 (0.1x10-4) – 0.1.
■ PER Threshold (DVB-S2 only) – Sets the threshold limit to raise Packet Error Rate alarm.
Range: 0.00000001 (0.1x10-7) – 0.1.
■ Attenuation Level
7
– Internal attenuation for saturated signals (0 – 30 dB).
■ Gain
7
– Internal gain to improve signal strength.
■ ISI (Hex) (0-FF) – Input Stream Identifier in hexadecimal. Use this parameter to select a
specific transport stream from a multi-transport carrier. If you have a quad port
demodulator card then you can select up to 4 transport streams from 4 single or a multi-
transport stream carrier.
6. Only available with certain hardware configurations, see B.6 Front End Card Features.
7. Only available with certain hardware configurations, see B.6 Front End Card Features.