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Instruction Manual: evolution 5000 E57xx DSNG and DENG Voyager Encoder Page 3-5
ST.TM.E10076.3
3.2 Bit-rate Limits With Reflex Licence and/or
Performance Upgrade
A user with a REFLEX licence (M2/ESO2/VBR) but no Performance Upgrade
(M2/ESO2/PU) will be able to get lower bit-rates than 1.5 Mbit/s. This only
occurs in Seamless modes. However, because the Performance Upgrade
has not been bought the picture quality will be reduced (see Table 3.3).
Table 3.3: Minimum Bit-rates With and Without Performance Upgrade
Performance
Upgrade
Reflex
Licence
B
min
Non-seamless
Modes
B
min
Seamless Modes
(Front Panel, SNMP)
B
min
Seamless Modes
(Reflex, MEM)
ûû
1.5 Mbit/s 1.5 Mbit/s
2
Not Possible
û
ü 1.5 Mbit/s 1.5 Mbit/s
2
Depends on Coding Mode
ü
û
0.256 Mbit/s Depends on Coding Mode Not Possible
üü0.256 Mbit/s Depends on Coding Mode Depends on Coding Mode
NOTE…
B
min
is the minimum bit-rate that can be set.
3.3 Basic Interoperable Scrambling System - BISS
(M2/EDCOM2/BISS)
With the appropriate configuration, the Encoder can use the Basic
Interoperable Scrambling System (BISS
3
) to scramble the outgoing
transport stream. This system has been developed by the European
Broadcasting Union (EBU) as an open scrambling system.
BISS has three main levels of operation: Mode 1, Mode 2 and Mode 3.
Mode 0 corresponds to no scrambling. BISS-E is also available in Build
version 2.2.0 and later.
NOTE…
Only Modes 0 and 1 are available at Build version 2.1.0. Modes 2 and 3 are not supported.
BISS Mode 1 operation uses a fixed value for the control word to scramble
the services in the transport stream from the Encoder. To descramble the
transmission, the Decoder needs to have the matching control word value.
The BISS Module (M2/EDCOM2/BISS) comprises Assembly S12284 and
Card S11484.
NOTES…
1. This option module is installed as a daughter card to the Base Board, with no external
connectors and does not use an option slot.
2. The BISS software must also be enabled in the Encoder (see Customer Services).
2
1.5 Mbit/s, but possibly higher if limited by Coding Mode.
3
BISS is implemented according to EBU Tech 3292 May 2002. BISS-E is available from Build version 2.2.0 and later.